Virtuozzo Control Center

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SWsoft, Inc.

Virtuozzo Control

Center

Hardware Node Administrator's Guide

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Suite 325

Herndon, VA 20171 USA

Tel: +1 (703) 815 5670 Fax: +1 (703) 815 5675

Distribution of this work or derivative of this work in any form is prohibited unless prior written permission is obtained from the copyright holder.

Linux is a registered trademark of Linus Torvalds.

Virtuozzo, Plesk, HSPcomplete, and corresponding logos are trademarks of SWsoft, Inc. Red Hat is a registered trademark of Red Hat Software, Inc.

SUSE is a registered trademark of Novell, Inc.

Intel, Pentium, and Celeron are registered trademarks of Intel Corporation.

Microsoft Windows, Windows 2003 Server, Windows XP, Windows 2000, Windows NT, Windows 98, Windows 95, Microsoft SQL Server, Microsoft Desktop Engine (MSDE), Microsoft Management Console are trademarks or registered trademarks of Microsoft Corporation

IBM DB2 is a registered trademark of International Business Machines Corp. SSH and Secure Shell are trademarks of SSH Communications Security, Inc. MegaRAID is a registered trademark of American Megatrends, Inc.

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Table of Figures

Figure 1: VZCC Menu...12

Figure 2: VZCC Title Bar ...14

Figure 3: Installing ActiveX SSH Client ...32

Figure 4: Installing Remote Desktop ActiveX Control...33

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Introduction

8

Logging In ...9

VZCC Licensing...10

VZCC Interface Overview...12

Customizing Interface Settings ...15

Managing VPSs

16

Creating New VPS...18

Defining VPS General Settings ...18

Customizing VPS QoS Settings ...21

Validating VPS QoS Configuration...22

Installing Applications into VPS ...23

Reviewing VPS Configuration ...23

VPS Dashboard Overview ...24

Changing VPS Root/Administrator Password by Service VPS User ...25

Adjusting VPS Configuration and Advanced Settings ...25

Starting and Stopping VPS ...27

Working With VPS Files and Folders ...28

Using SSH to Connect to VPS ...31

Using Remote Desktop Connection to Access VPS ...33

Backing Up and Restoring Single VPS ...34

Backup Details...35

Browsing Backup Contents ...36

Managing Backups of Multiple VPSs...36

Reinstalling VPS...37

Stopping VPS Prior to Reinstallation ...37

Selecting Reinstallation Type ...38

Confirming Reinstallation ...38

Repairing VPS ...39

Managing VPS Services and Processes ...40

Managing VPS Services ...40

Managing VPS Processes ...44

Managing VPS Firewall ...46

Installing Plesk ...52

Working in Plesk Control Panel ...52

Logging In to Confixx Control Panel ...54

Advanced Operations...54

Customizing VPS Network Parameters...55

Mounting External Volumes Inside VPS ...56

Managing VPS Applications ...59

Updating VPS Software...59

Cloning Virtual Private Server ...60

VPS Statuses...61

Managing and Monitoring VPS Resources

63

Monitoring VPS Principal Resources ...64

System Resource ...65

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Disk Space Resource ...67

Disk Inodes Resource ...68

Extended Resource Consumption Data...69

Monitoring Top Resource Consumption...73

Top CPU Resource Consuming VPSs ...73

Top Total Memory Consuming VPSs ...74

Top Physical Memory Consuming VPSs ...75

Top Disk Space Consuming VPSs ...76

Top Disk Inodes Consuming VPSs ...77

Top Incoming Traffic Receiving VPSs ...78

Top Outcoming Traffic Handling VPSs ...79

Changing VPS QoS Parameters...80

Changing Disk Quota for Multiple VPSs ...82

Applying New VPS Template ...83

Applying New VPS Template to Multiple VPSs...84

Setting Up Network Accounting and Shaping

85

Configuring Network Accounting and Shaping on Hardware Node ...86

Setting Up Network Classes ...87

Configuring Network Adapters ...87

Configuring Network Shaping...88

Configuring Network Shaping for Single VPS...89

Managing VPS Templates

90

Creating New VPS Template...91

Defining VPS Template General Settings ...91

Customizing QoS Settings...92

Choosing Applications ...94

Reviewing VPS Template Configuration ...94

Operations on VPS Templates ...94

Uploading VPS Template on Hardware Node ...95

Editing Existing VPS Template ...96

Configuring VPS Template General Settings ...97

Managing QoS Parameters ...98

Adding Applications to Templates ...99

Creating New VPS Template by Splitting Hardware Node...99

Specifying General Parameters...99

Checking VPS Template QoS Parameters...100

Managing VZCC Users Access Rights

101

Viewing VZCC Users List...103

Creating New VZCC User ...103

Editing VZCC User ...105

Viewing Roles List ...105

Creating New Role ...106

Editing Role ...107

Selecting VPSs to Be Granted to User...107

Setting Up New User Registration...108

Configuring Email Notification ...108

Managing VPSs Requests

109

VPS Requesting ...110

VPS Requests...111

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Monitoring Operations and Viewing Logs

112

Viewing History of VPS Status Changes...113

Viewing Alerts Log ...113

Viewing Actions Log...114

Viewing Traffic Log ...115

Viewing Active Tasks...116

Viewing Task Details...116

Viewing Error Details...117

Managing Hardware Node

118

Hardware Node Dashboard Overview ...118

Configuring Hardware Node ...119

Configuring Email Gateway ...120

Specifying Proxy Server...120

Managing Virtuozzo Licenses ...120

Viewing Virtuozzo Licenses ...121

Generating License Request ...122

Installing License on Hardware Node ...123

Virtuozzo License Statuses...123

Monitoring HN Resources Consumption...124

Managing OS and Application Templates ...125

Performing Operations on OS Templates ...125

Performing Operations on Application Templates ...126

Installing OS/Application Template on Hardware Node...127

Viewing OS Template Properties ...127

Viewing Application Template Properties ...128

Confirming Uninstalling Application Templates from VPS...130

Managing OS/Application Template Versions...130

Rebooting Hardware Node ...132

Updating Virtuozzo Software ...133

Customizing Update Process ...133

Configuring Access to Update Repository ...133

Migrating Physical to Virtual Server

134

Setting up Connection to Physical Server...135

Reviewing Physical Server Configuration...135

Customizing Migration Procedure...137

Configuring Virtual Private Server ...138

Customizing VPS QoS Settings...139

Reviewing Configuration and Setting Post-migration Start/Stop Option ...140

Troubleshooting

141

Services Inaccessibility...141 Elusive Problems ...142 Network Problems ...142 File Problems ...143

Getting Support

144

Reporting Problem to Technical Support...144

Specifying Contact Information and Problem Details ...145

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Setting Up Support Channel ...146 Installing Certificate on Hardware Node ...146

Index

147

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Virtuozzo Control Center (VZCC) is designed for Hardware Node administrators and features the ability to manage a particular Hardware Node and all VPSs residing on it with the help of a standard Web browser on any platform. Besides, VZCC allows you to grant access to VPSs to users with a limited scope of management permissions. It is only within this scope of permissions that those users can use VZCC as a VPS managing tool. A list of supported browsers is given below:

Internet Explorer 6.0 and above; Mozilla 1.7 and above;

Firefox 1.0 and above.

Chances are that you will also be able to use other browsers, but VZCC has not been extensively tested with them.

VZCC allows you to manage Hardware Nodes running Virtuozzo installed on both the Windows 2003 Server and Linux (Red Hat Enterprise Linux Advanced Server 3, Fedora Core 4, etc.) operating systems. Main principles of the VZCC operation for both operating systems are very similar. However, there are some features peculiar to only Windows or Linux Nodes. When there are differences between them, steps written specifically for the Windows version of Virtuozzo are marked with the icon and steps for the Linux version - with the icon. Currently, you are able to perform the following main operations on the Hardware Node and in the VPS by means of VZCC:

View and install Virtuozzo licenses; Create new VPSs;

Edit VPS configuration, network parameters and other settings; Reinstall and/or repair a VPS;

Change the VPS status; Manage VPS groups; Manage VPS backups; Manage VPS templates;

Manage and monitor VPS resources; Manage applications;

Manage VPS requests; Set up VPS firewall;

Configure HN administrator-VPS user automatic email exchange; Start, stop, and restart certain services inside a VPS;

View a list of VPS processes and send signals to them; View the current HN and VPS resources consumption; View Virtuozzo logs and monitor VPS operations;

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Customize the VZCC interface; Migrate a physical server to a VPS, etc.

In This Chapter

Logging In... 9

VZCC Licensing ... 10

VZCC Interface Overview ... 12

Customizing Interface Settings ... 15

Logging In

There are three possible ways for the HN administrator or a Service VPS user to log in to VZCC:

Note: A Service VPS user is the one who can access a Service VPS and is endowed with a

certain scope of rights and privileges by the Node administrator by means of VZMC (VZMC

User's Guide > Advanced Tasks > Creating Service VPS Users).

1 Using the IP address (or hostname) of the Virtuozzo Hardware Node and the TCP port specified in Virtuozzo offline services (by default, this port is 4643). When connecting to the Hardware Node, you should enter the user name "vzagent0" and administrative password you provided during the Virtuozzo installation on your Node and click the Login button. If you cannot log in to VZCC using this method, you should use methods either 2 or 3.

2 Using the IP address (or hostname) of the Virtuozzo Service VPS and the TCP port

specified in Virtuozzo offline services (by default, this port is 4643). When connecting to the Service VPS, you should enter the user name (for example, vzagent0 for full administrative rights) and password of a Service VPS user and click the Login button. If you cannot log in to VZCC using this method, you should use methods either 1 or 3.

3 Using the IP address (or hostname) of any VPS residing on the given Hardware Node and

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Besides, users, who has not yet been provided with a login to VZCC, are offered to self-service using the Register link on the VZCC logon screen, or anywhere else, and registering in VZCC as a user. Filling in the registering form includes entering an email, used as a login, and a password. Subsequently, new users will be able to use these credentials to log in to VZCC. For the clients to log in this way, registering new users (see page 108) has to be enabled by the HN administrator

Finally, users received the logging in to VZCC credentials from the HN administrator can log in entering these credentials to the Username and Password fields on the login screen.

In either case, once you have connected to the VPS, you are recommended to provide a valid email address on the VZCC configuration page (see page 15) in order to be able to log in to VZCC in case you forget your password. The Forgot your password? link on the login page allows you to enter your user name and the email address provided on the VZCC configuration page in order to receive a URL at this address informing you how to change your password.

Note: To enable the functionality of receiving the forgotten password at the user email address,

the email gateway of the Hardware Node should be configured to send notifications through. Besides, you should edit the vzcpcon.conf file located inside the Service VPS to define the sender's e-mail address. Detailed information on how to modify the vzcpcon.conf file is provided in the Configuring Mail for VZCC/VZPP section of the Virtuozzo Installation Guide.

VZCC Licensing

The VZCC licensing model envisages the necessity of having a proper VZCC license loaded on the Hardware Node for this Node to be manageable through VZCC/VZPP. The first time you log in to VZCC, you may need to provide a valid VZCC license.

To install a VZCC license, do the following:

1 Follow the Hardware Node link on the VZCC main menu and click the License Management

link to display the License Management page.

2 On the License Management page, click the Install New License link to open the Install New License page.

3 Open the new license file by using any text editor and copy its content to the clipboard. 4 Place the cursor to the License field of the Install New License page and paste the copied

license text.

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By default, VZCC licenses are stored in the following directories on the Hardware Node: - /etc/hspc/licenses/

- C:\vz\root\1\C\Program Files\SWsoft\vzcp\licenses\

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VZCC Interface Overview

The Virtuozzo Control Center interface has been designed to let the Hardware Node administrator quickly perform all possible tasks through an intuitive navigation system.

All VZCC pages have a menu on the left. The menu looks like this:

Figure 1: VZCC Menu

It provides links to VZCC pages where you can perform various tasks. The link to the page which is currently open is highlighted. To know more about the page to which any link points, point with the mouse cursor at the link. The description of the corresponding page is displayed at the bottom of the menu.

Note: In the same way as you run your cursor over a link, you can roll over almost any VZCC

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All links are gathered into four groups: Infrastructure Manager, Service Level Manager, Event

Manager, and Other, the first three groups being links themselves. Most of particular tasks may

be performed by clicking the name of the group to open the corresponding dashboard and choose a task on this dashboard. However, there are a number of tasks that you may select at once on the menu under the corresponding group. The links on the menu do the following:

Link Description

Infrastructure Manager Opens the Infrastructure Manager dashboard where you can choose one of the following options: managing a Hardware Node, Virtual Private Servers residing on the Node, or available VPS backups.

Virtual Private Servers Opens the Virtual Private Servers page where you can learn more about various operations you can perform on both VPS groups and individual VPSs. Besides, it allows you to create new VPSs and manage VPS templates.

Hardware Node Opens the page where you can manage Virtuozzo licenses, monitor Hardware Node resources, and perform a number of operations on OS and application templates.

Backups Opens the page where you can manage backups of all VPSs residing on the Hardware Node.

Service Level Manager Opens the Service Level Manager dashboard where you can click the link to view the statistics on the top resource-consuming VPSs.

Resource consuming VPSs Opens the tabs displaying the statistics on the resource usage by top

resource-consuming VPSs.

Event Manager Opens the Logs dashboard where you can learn more about various logs available for your VPSs and view any of them.

Status Changes Opens a list of status changes your VPSs have recently undergone.

QoS Alerts Opens a list of alerts of your VPSs overusing any hardware resources or coming close to the usage limits imposed on them.

Actions Log Opens a list of actions you have recently performed in VZCC with the VPSs residing on the Hardware Node.

Help Opens the help system.

Download Opens the page where you can download Virtuozzo Control Center User's Guide, Virtuozzo Power Panels User's Guide, Virtuozzo User's Guide, Virtuozzo Management of System Resources Administrator's Guide, other relevant Virtuozzo guides, and additional software for managing your Hardware Node and all VPSs residing on it.

Configure Opens the page where you can customize the VZCC interface.

Sign out Following this link logs you out of VZCC.

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Clicking on the Virtuozzo logotype will get you to a list of Virtual Private Servers (see page 16). The area not covered by the menu and the SWsoft copyright information provides the contents proper of any VZCC page. It has a title bar on top, an example of which is shown below:

Figure 2: VZCC Title Bar

You should remember that the exact layout of VZCC screen elements may vary with the interface skin selected on the Configure Control Center page. Therefore, depending on the interface configured, the title bar may consist of the following elements (from left to right and from top to bottom):

1 The icon corresponding to the current VZCC page.

2 The hierarchy of levels superior to the level of the current VZCC page or the pages you

have visited prior to the page you are on, which are called the route elements. They present links for moving up to any of these levels or pages.

3 The name of the current VZCC page.

4 The screen ID of the current VZCC page. If you are having troubles with VZCC,

mentioning the ID of the problem screen in your support call is likely to facilitate resolving your issue.

5 A link to the Active Tasks page. This will open the page with a list of those tasks related to

managing your VPSs that you have scheduled by means of VZCC, but that have not yet been completed.

6 A link to refresh the current screen.

7 A link to open the context-sensitive help. The link goes only with non-Plesk interface skins. 8 An Up Level link which provides the way up to the next route element from the current page.

According to the skin selected it may be presented as a link or a button and be situated respectively at the top or bottom of the page.

Note: More information on interface skins is provided in the Customizing VZCC Interface chapter

(see page 15).

The contents proper of any VZCC page depend on the task selected. The topmost-level page, which is displayed after clicking on the Infrastructure Manager link on the VZCC menu, allows you to choose one of the following options:

 Click on the Hardware Node link to manage your Hardware Node or

 Click on the Virtual Private Servers link to manage Virtual Private Servers residing on your Node or

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Customizing Interface Settings

Clicking on the Configure link on the VZCC left menu opens the Virtuozzo Control Center interface configuration page where you can set a number of parameters related to the VZCC interface. The options provided on the Configure Control Center page are the following:

Option Description

Interface Skin Here you may choose a suitable interface skin for your VZCC affecting such elements as the VZCC general layout (framed or non-framed), icons and images, and the color palette.

Local Time Zone This setting affects the date and time information found on such VZCC pages as Status Changes, QoS Alerts, Actions Log. Choose the time zone you wish to be used when viewing different kinds of logs.

Interface Language As VZCC is localized into a number of languages, this drop-down menu lets you choose the default interface language for VZCC. This setting affects the language of both your current VZCC session, and all future sessions if User

Default is chosen as the interface language on the VZCC login screen.

Contact email This field should be filled in with a correct email address to enable the functionality of restoring the password, should the current user forget it. This email address pertains to the current user only; other VZCC users of the given VPS may fill in this field with other addresses. The link for restoring the password is located on the VZCC login page.

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The first page that you see when you log in to VZCC lets you grasp the information on all the Node VPSs at a glance. This page also opens when you click Virtual Private Servers on the VZCC menu. All the vital information - the IP addresses, hostnames, statuses (see page 61) of all the VPSs, etc. is presented in the Virtual Private Servers table:

Column Name Description

ID The ID assigned to the VPS. Hostname The hostname of the VPS.

IP Address The IP address assigned to the VPS. Operating System The OS template the VPS is based on.

Template The VPS template the VPS is based on. The asterisk after the template name indicates that the VPS template has been customized by changing one or several QoS parameters.

Status The current status of the VPS (see page 61).

QoS The tick opposite the corresponding VPS reflects the current state of the Quality of Service (QoS) parameters consumed by the VPS. If the resource consumption lies within 90% of the limits defined for the VPS, the tick is green. It means that the VPS experiences no shortage in resources required for the normal course of work. The yellow and red ticks indicate that one or several QoS parameters are very close to or exceeding the specified limits, which may result in serious problems inside the VPS. In this case you can follow the QoS Alerts link on the VZCC main menu to get a more detailed information on the problem parameters.

Enabled A green tick opposite a VPS indicates that this VPS is enabled and can be started, a red cross means that the VPS is disabled and cannot be started.

VZPP Clicking on the icon in this column will open a separate window where you can manage the corresponding VPS by means of Virtuozzo Power Panels (VZPP). You can use this feature if the following conditions for the given VPS are fulfilled:

the offline management for the VPS is enabled; a valid IP address is assigned to the VPS;

the IP address you have used to log in to VZCC does not coincide with that of the corresponding VPS.

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To facilitate working with VPSs residing on your Hardware Node, you may have the Virtual

Private Servers table display only those VPSs that have a particular ID, hostname, are based on a

particular template, have a definite status (running, stopped, etc.), a particular transition state, a relevant QoS alert or are enabled/disabled. On top of the table, press the icon to display the fields where you can specify the parameters the VPSs sought should meet; then click on the

Search link. To view all the Virtual Private Servers residing on your Hardware Node, click on

the Show All link to the right of the parameter fields.

To manage several VPSs at once, make use of the Virtual Private Servers table. You are able to execute the following operations on VPS groups:

 starting/stopping a VPS group depending on the current VPS state (the Start/Stop links, correspondingly);

stopping any VPS(s) without waiting for two minutes for the VPS shutdown scripts to be executed. It can be useful, for example, in case a Virtual Private Server is known to be corrupt. The Fast Stop option is available only for a Service VPS user (for example, vzagent0);

 destroying a VPS group (the Destroy link);

 backing up the selected VPS(s) (the Back Up link);

 applying a VPS template to the selected VPS(s) (the Group Actions link);  changing VPS disk quotas (the Group Actions link);

 configuring general parameters for a group of VPSs (the Group Actions link).

To perform one of the aforementioned operations, select the checkboxes opposite the corresponding VPSs and press the appropriate link on top of the table.

Many more operations can be performed on a single VPS thru the corresponding VPS dashboard. You can open the VPS dashboard from the VZCC main page by selecting in the

Virtual Private Servers table the VPS you wish to operate and clicking its ID or hostname.

In This Chapter

Creating New VPS ... 18

VPS Dashboard Overview ... 24

Backing Up and Restoring Single VPS... 34

Managing Backups of Multiple VPSs... 36

Reinstalling VPS ... 37

Repairing VPS... 39

Managing VPS Services and Processes ... 40

Advanced Operations ... 54

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Creating New VPS

Before being managed, any Virtual Private Server should be first created. VZCC enables you to create new VPSs by means of the New VPS wizard. To invoke the wizard, follow the Virtual

Private Servers link on the VZCC main menu and then click on the New VPS icon. The other

approach to getting more VPSs is realized within requesting VPSs, instead of creating VPSs, which is described in the corresponding chapter (see page 109). Besides, your VPSs list becomes a VPS longer every time you migrate a physical to a virtual server (see page 134).

Defining VPS General Settings

The first page of the New VPS wizard enables you to define VPS general settings that are divided into four groups for your convenience: configuration parameters, network parameters, password, and advanced parameters.

The Configuration group enables you to perform the following operations: Select a VPS template that defines the VPS QoS parameters (see page 69). Choose an OS template and its version you wish the VPS to be based on.

 Select the Customize QoS settings checkbox, which allows you to adjust QoS parameters (see page 69) on the next page of the wizard. This operation is optional.

The Network group lets you do the following to define the network parameters:

Set a hostname of the VPS. Mind that the range of symbols for the VPS hostname is limited. For a Windows Node, the hostname may start singularly with a-z, A-Z or an underscore ( _ ), contain further any of the following symbols: a-z, A-Z, 0-9, _, - and have a-z, A-Z, 0-9 or _ at the end. The maximum number of symbols is 15. For a Linux-based VPS, the hostname should consist of a-z, 0-9, _, and may have a point in the middle. The number of symbols should not exceed 256.

Assign an IP address to it. To the right of the IP address you can provide a subnet mask to define the subnet the newly created VPS will belong to, which will insert the VPS into the corresponding local network (the feature is available only for Windows-based VPSs). The field for the subnet mask is slash-separated from the IP address field.

You can assign several IP addresses and, consequently, subnet masks (for a Windows-based VPS) to the VPS by clicking the icon to the right of the IP Address/Subnet Mask/

IP Address fields. At the same time, clicking the icon near the IP Address/Subnet Mask/ IP Address fields will remove the corresponding IP address and subnet mask (for a

VPS running Windows) assigned to the VPS.

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 Enter one or more DNS servers that this VPS is supposed to use in the DNS server IP

address field or leave it blank. By clicking the or icons you can add/remove

accordingly the DNS servers IP addresses for the VPS under creation.

 Define a list for hostname lookup in the Search domain field or leave it blank. Use the or icons to add/remove the lookup parameters for the VPS. The search list is normally determined by the domain name(s); by default, it contains only the local domain name(s). You can also add external domain names for a particular VPS. A search query is performed by attempting to use each item in the list in turn until a match is found. Note that this process may be slow and may generate a lot of network traffic if the servers for the listed domains are not local, and that the query might time out if no server is available for one of the domains.

In the Password group, you should define and confirm the root/Administrator password. You will need this password to access the VPS in the future, for example, through VZPP.

Note: Remember that each VPS root/ Administrator user exercises full control over his/her VPS, has his/her own user credentials (name and password) to access the VPS and enjoys an unlimited access to other user accounts inside this VPS, i.e. s/he has any right granted to a privately owned physical server as opposed to the Hardware Node administrator's authority or the rights of the other VPSs users in regard to the given VPS. Any VPS user can be a member of an Active Directory domain (e.g. access any of the network shares to which the VPS user has rights).

The Advanced group for a Windows-based Hardware Node is subdivided into the General

Advanced Options and Network Advanced Options groups.

The General Advanced Options group allows you to do the following:

Specify the VPS ID, a 32-bit (ranging from 0 to 4294967295) integer number over 100 (Detailed information on the VPS IDs allocation can be viewed in the Choosing Virtual

Private Server ID subsection of the Virtuozzo User's Guide.);

WARNING! When deciding on a VPS ID, do not use the ID of any VPS that was ever

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Start the VPS after its creation;

Have the VPS started on every boot of the Hardware Node;

Enable/disable the offline management of the VPS for it to be directly managed via VZPP by its Administrator from any browser at its own IP address.

Have the VPS ID displayed on the VPS desktop when connected to it by the RDP protocol. The Network Advanced Options group enhances the VPS operation by providing you with the ability to:

Switch on the network browsing feature for the VPS being created. The Windows 2003 browser service allows the VPS on a Windows 2003 network to view all the network environment available. The browser service maintains a list (called the browse list) of all available domains and computers. The browse list can be viewed using Windows 2003 Explorer and is provided by a browser in the VPS. The default for the feature is the off status. You can learn more on the option from the Network Places overview article of the Windows 2003 Help system invoked by selecting Help and Support on the Windows Start menu.

Allow the packet QoS scheduler for the VPS. This is one of the Quality of Service components in MS Windows 2003 Server that enable differentiation and preferential treatment for subsets of data transmitted over the network. The packet scheduler is the traffic control module that regulates how much traffic various applications are allowed, essentially enforcing the QoS parameters that are set for each particular application. For instance, you can use the feature to restrict a web site throughput to a certain maximum bandwidth value or differentiate between the data transmitted by critical applications (e.g. Plesk) and excessive data (e.g. multimedia applications), and allow preferential treatment for the important web sites or critical applications. The option is disabled by default. For additional information on the packet scheduler, address the MSDN Library > Win32 and COM

Development > Network Protocols > Quality of Service (QOS)

(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/qos/qos/qos_start_page.asp).

Note: The concept of Quality of Service in MS Windows 2003 Server differs from that of

Virtuozzo Quality of Service used to provide a fair share of the main system resources (disk space, CPU time, etc.) among Virtual Private Servers.

To enable/disable any of the features listed under the Advanced group, select/clear the corresponding checkbox.

If you are managing a Hardware Node running the Linux operating system, you can make use of the Advanced group options to:

Specify the VPS ID, a 32-bit (ranging from 0 to 4294967295) integer number over 100 (Detailed information on the VPS IDs allocation can be viewed in the Choosing Virtual

Private Server ID subsection of the Virtuozzo User's Guide.);

WARNING! When deciding on a VPS ID, do not use the ID of any VPS that was ever

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Have the VPS start disabled (may be caused by business requirements); Start the VPS after its creation;

Have the VPS started on every boot of the Hardware Node;

To enable/disable any of the features listed under the Advanced group, select/clear the corresponding checkbox.

The Offline management group allows you set the offline management options by selecting the appropriate radio button. Offline management feature of the corresponding VPS ensures the VPS manageability by means of one or more offline services from any browser at its own IP address. After the offline management feature is enabled for the Virtual Private Server, one port of its IP address becomes permanently active whatever the VPS state. The currently supported services are vzpp and vzpp-plesk (for managing VPSs with the Plesk control panel installed in them). You can currently:

Disable the offline management of the VPS.

Enable the offline management of the VPS via default offline services. The default services list is compiled by the Hardware Node administrator through VZMC (for more details on the offline services management see VZMC Help > Advanced Tasks > Managing Offline

Services Configuration). Should any service be removed from the default services list, the

VPS will be unable to be managed via the service off the list. By default, the VPS is subscribed to default offline services.

Enable the offline management of the VPS via custom offline services. You can select in the corresponding checkbox(es) the service(s) you would like the VPS to be subscribed to. Click Next to submit the settings and move on to the next New VPS wizard stage.

Customizing VPS QoS Settings

If you have selected the Customize QoS settings checkbox on the previous step, you will be presented with the screen allowing you to adjust QoS parameters for the VPS being created. For you to easier find the information on the resource that interests you, the resources are grouped by their relations to three computer subsystems: CPU Parameters, Disk Quota, and

Primary UBC Parameters. Information on the VPS parameters is presented in the table with the

following columns:

ID The name of the QoS parameter.

Limit The limit on the consumption of the given resource by the VPS. Soft Limit The limit on the consumption of the given resource by the VPS that

once reached or exceeded can lead to grave problems inside the VPS. Depending on the considered parameter, either some process might be killed at any time in the VPS, or the next resource allocation request might be refused to it. However, the VPS is allowed to temporarily exceed its quota soft limit for the Disk Space and Disk Inodes resources without any damage to the VPS processes for the grace period, set in the quotatime parameter in the Disk Quota table. Hard Limit The limit on the consumption of the given resource by the current

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Limited Information on whether the parameter is limited or not.

Units _{The units in which the value of the} _{Limit/ Soft Limit and/or Hard}

Limit column is measured.

Description The description of the parameter.

If you have entered new values for one or several QoS parameters and then decided to change them to the values from the VPS template you had chosen at the previous step, you can reset the new values by clicking the curved arrow against the corresponding parameter(s). Detailed information on all resources is provided in the Monitoring VPS Principal Resources section.

If you are creating a VPS on a Linux Node, the Secondary UBC Parameters and Auxiliary UBC

Parameters subsystems are additionally available for their customization on this page. Besides,

you can use the Validate button at the foot of the page to display if any constraint violations (on page 22) have been found and learn the corresponding constraints on the resource management parameters.

After you have customized the VPS parameters and checked their interdependencies, click

Next>.

Validating VPS QoS Configuration

The system resource control parameters have complex interdependencies, or constraints. Violation of these interdependencies can be catastrophic for the VPS. In order to ensure that the VPS under creation does not break them, it is important to validate the VPS configuration file before creating VPSs on its basis.

The utility checks constraints on the resource management parameters and displays all the constraint violations found. There can be three levels of violation severity, represented by the following icons on the VPS dashboard:

Recommendation This is a suggestion, which is not critical for the VPS or Hardware Node operations. The configuration is valid in general; however, if the system has enough memory, it is better to increase the settings as advised. Warning A constraint is not satisfied, and the configuration is invalid. The VPS

applications may not have optimal performance or may fail in an ungraceful way.

Error An important constraint is not satisfied, and the configuration is invalid. The VPS applications have increased chances to fail unexpectedly, to be terminated, or to hang.

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Installing Applications into VPS

The third page of the New VPS wizard allows you to choose applications to install them to the VPS directly after its creation. All available applications that can be added to the VPS are listed in the Available Applications table in the left part of the displayed page. The type and number of applications vary depending on the OS template the VPS will be based on, i.e. only those applications are displayed that are compatible with the given OS template.

To add the application(s) you need to the VPS, tick the checkbox(es) opposite the application(s) you wish to add and click on the >> button. After that, the application(s) appear(s) in the

Scheduled for Installation table in the right part of the page. To remove any application from the

VPS being created, tick its checkbox in the Scheduled for Installation table and click on the << button.

The Resolve button enables you to check unresolved dependencies among the applications selected for installation and review them in case of finding any. It is strongly advisable to make use of the button after you have added the applications you wish to install to the Scheduled for

Installation table. To eliminate unresolved dependencies, you can remove one of the problem

applications from the Scheduled for Installation table as is shown above.

After you have selected the applications to be installed and checked their dependencies, click on the Next> button.

Reviewing VPS Configuration

The last page of the New VPS wizard lets you review the major settings of the VPS configuration you provided on the previous steps. If you are satisfied with the information entered, click

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VPS Dashboard Overview

The VPS dashboard is displayed after you click the Virtual Private Servers link on the VZCC main menu and select the VPS you wish to manage in the Virtual Private Servers table.

For your convenience the main VPS operations available have been grouped under six tabs:

General, Resources, Maintenance, Logs, Services, and Advanced.

On the General tab, the following operations are available by clicking the corresponding icons: Changing the VPS general settings: root/Administrator password, OS version and other

parameters (the Preferences link);

 Starting or stopping the VPS (the Start/Stop VPS link);  Working with the VPS file structure (the File Manager link);

 Launching the Virtuozzo Power Panels to manage the VPS (the Virtuozzo Power Panels link):

Clicking on the Virtuozzo Power Panels icon will open a separate window where you can manage the corresponding VPS by means of Virtuozzo Power Panels (VZPP). You can use this feature if:

1. The offside management for the VPS is enabled; 2. A valid IP address is assigned to the VPS;

3. The IP address you have used to log in to VZCC does not coincide with that of the corresponding VPS.

Connecting to the VPS via SSH (the SSH Connection link);

Logging in to the VPS via Remote Desktop Connection (the Remote Desktop Connection link).

The VPS Summary table at the bottom of the page provides brief information on the selected VPS:

ID The ID assigned to the current VPS. Hostname The hostname of the current VPS.

Status The current status of the VPS (see page 61).

IP Address(es) The IP address assigned to the current VPS. More than one IP address per VPS is possible.

Operating System The operating system the current VPS runs. Applications Installed A list of applications installed in the current VPS.

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Changing VPS Root/Administrator Password by Service VPS User

A Service VPS user can benefit from the Change Password option on the General tab of the VPS dashboard. You should enter a new root/Administrator password for the current VPS into the fields provided and click Change.

Note that VZCC does not check the entered password as to its length and non-conformity to dictionary entries, so choosing a simple password rests entirely at your own risk. It is recommended to use a chaotic set of lowercase (a-z) and uppercase (A-Z) letters, digits (0-9), and punctuation marks as root/administrator password. The following punctuation marks are allowed: ! “ $ % & , ( ) * + - . / ; : < = > ? [ \ ] ^ _ { | }. The space character, #, and @ symbols are not allowed. The password should not be less than 5 or more than 14 characters.

Note: The password of the Service VPS user proper can only be changed via VZMC by the

Node administrator (the detailed information is presented in VZMC User's Guide > Advanced

Tasks > Creating Service VPS Users).

Adjusting VPS Configuration and Advanced Settings

The Preferences page allows you to adjust the main settings for your Virtual Private Server. This page is displayed on clicking the Preferences icon on the General tab of the VPS dashboard.

To change the existing root/Administrator password, you should enter the new password into the fields provided under the Password group. Note that VZCC does not check the entered password as to its length and non-conformity to dictionary entries, so choosing a simple password rests entirely at your own risk. It is recommended to use a chaotic set of lowercase and uppercase letters, digits, and punctuation marks as root/Administrator password.

Note: Remember that each VPS root/ Administrator user exercises full control over his/her VPS, has his/her own user credentials (name and password) to access the VPS and enjoys an unlimited access to other user accounts inside this VPS, i.e. s/he has any right granted to a privately owned physical server as opposed to the Hardware Node administrator's authority or the rights of the other VPSs users in regard to the given VPS. Any VPS user can be a member of an Active Directory domain (e.g. access any of the network shares to which the VPS user has rights).

The SLM Configuration group lets you choose the way to manage the VPS resources:

The Old-style UBC resource management option tells the system to use all those fine-grained parameters for system resources allocation that have always been part of Virtuozzo traditional resource management.

The SLM-only resource management option allows you to reduce a set of memory-related parameters to a single slmmemorylimit parameter, which essentially denotes the amount of RAM the given VPS is allowed to use.

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Note: This group of options is displayed only if SLM is globally enabled on the Hardware

Node. To enable SLM, follow the VZLinuxNewSLM guide to be found in the Virtuozzo distribution kit.

The Operating System group allows you to change the OS template version the current Virtual Private Server is based on by selecting the right OS version on the drop-down menu.

Note: Make sure you have backed up your Virtual Private Server in case something goes wrong

during the OS system upgrading/downgrading. Expand the Advanced group to:

Make the Virtual Private Server automatically boot at the Hardware Node startup. For this purpose, select the Start on Hardware Node boot checkbox.

Have the VPS start disabled by selecting the Disable this VPS checkbox (may be caused by business requirements).

Enable the offline management feature of the corresponding VPS ensuring the VPS manageability by means of VZPP from any browser at its own IP address. After the offline management feature is enabled for the Virtual Private Server, one port of its IP address becomes permanently active whatever the VPS state. To enable this feature, just select the

Enable default offline management checkbox.

Set the Capabilities in the corresponding group, which have been designed to:

switch on/off the network browsing for the VPS. The Windows 2003 browser service allows the VPS on a Windows 2003 network to view all the network environment available. The browser service maintains a list (called the browse list) of all available domains and computers. The browse list can be viewed using Windows 2003 Explorer and is provided by a browser in the VPS. The default for the feature is the off status. You can learn more on the option from the Network Places overview article of the Windows 2003 Help system invoked by selecting Help and Support on the Windows

Start menu.

enable/disable the packet QoS scheduler for the VPS. This is one of the Quality of Service components in MS Windows 2003 Server that enable differentiation and preferential treatment for subsets of data transmitted over the network. The packet scheduler is the traffic control module that regulates how much traffic various applications are allowed, essentially enforcing the QoS parameters that are set for each particular application. For instance, you can use the feature to restrict a web site throughput to a certain maximum bandwidth value or differentiate between the data transmitted by critical applications (e.g. Plesk) and excessive data (e.g. multimedia applications), and allow preferential treatment for the important web sites or critical applications. The option is disabled by default. For additional information on the packet scheduler, address the MSDN Library > Win32 and COM Development > Network

Protocols > Quality of Service (QOS)

(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/qos/qos/qos_start_page.asp).

Note: The concept of Quality of Service in MS Windows 2003 Server differs from that of

Virtuozzo Quality of Service used to provide a fair share of the main system resources (disk space, CPU time, etc.) among Virtual Private Servers.

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The options in the Capabilities group are enabled/disabled by selecting/clearing the corresponding checkboxes.

The Offline management group allows you set the offline management options by selecting the appropriate radio button. Offline management feature of the corresponding VPS ensures the VPS manageability by means of one or more offline services from any browser at its own IP address. After the offline management feature is enabled for the Virtual Private Server, one port of its IP address becomes permanently active whatever the VPS state. The currently supported services are vzpp and vzpp-plesk (for managing VPSs with the Plesk control panel installed in them). You can currently:

Disable the offline management of the VPS.

Enable the offline management of the VPS via default offline services. The default services list is compiled by the Hardware Node administrator through VZMC (for more details on the offline services management see VZMC Help > Advanced Tasks > Managing Offline

Services Configuration). Should any service be removed from the default services list, the

VPS will be unable to be managed via the service off the list. By default, the VPS is subscribed to default offline services.

Enable the offline management of the VPS via custom offline services. You can select in the corresponding checkbox(es) the service(s) you would like the VPS to be subscribed to. Press the Submit button to save the changes made.

Adjusting General Configuration of Multiple VPSs

There exist two configuration options that you may apply simultaneously to a multitude of VPSs. These options are whether the VPSs should be automatically started after the Hardware Node is booted up, and whether offline management is enabled for the VPSs. This is done on the Group Actions: Configure VPS(s) page. To access this page, select the relevant VPSs on the VZCC start page (with a table of VPSs), click Group Actions, select the Configure VPS General

Settings option, and click Next.

Select the desired options under the Start on Hardware Node boot and Enable offline management groups and click Submit for the changes to be applied to your VPSs.

Starting and Stopping VPS

A Virtual Private Server may be started up, restarted, and shut down like an ordinary computer. The VZCC page that provides access to these functions is available on clicking the Start/Stop

VPS link on the VPS dashboard.

Depending on the VPS state, only those operations are accessible that comply with its current state. For example, a running VPS cannot be started for obvious reasons, and so on. The following VPS states can be characterized as stable:

Status Description

Running The VPS is running; therefore, it may only be restarted or stopped. Down The VPS is stopped; therefore, it may only be started.

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Besides these states, during VPS operations a VPS may be in one of the transitional states: mounting, starting, stopping, etc. When in a transitional state, you cannot perform any action on the VPS until the operation is finished. The description of all possible VPS statuses is provided in the VPS Statuses section (on page 61).

Press the Start VPS, Stop VPS, or Restart VPS button to perform the corresponding action. On pressing one of these buttons, this action is logged.

If you are managing a VPS residing on the Hardware Node with the Linux operating system installed and wish to stop your VPS, bear in mind that there is a two-minute timeout for the VPS shutdown scripts to be executed. If the VPS is not stopped in two minutes, the system forcibly kills all the processes in the Virtual Private Server. The Virtual Private Server will be stopped in any case, even if it is seriously damaged. To avoid waiting for two minutes if you are operating a Virtual Private Server that is known to be corrupt, you may use the Fast Stop VPS button. The option is available only for a Service VPS user (for example, vzagent0).

Working With VPS Files and Folders

For a running VPS, you can navigate inside the VPS directory structure, list the VPS files and directories and perform all essential file operations on the File Manager page. This page can be accessed by following the File Manager link on the General tab of the VPS dashboard. Right after following this link, you are presented with a list of drives inside the VPS. Click on a drive (e.g. C:) to see its contents. Whatever the directory you are in, the following information is given on its contents:

T The icon in this column indicates if this is a directory or a file. Name The name of the directory or file.

Size The size of the file.

Modified The date and time of the last modification of the directory or file.

Permissions The first symbol in this column indicates if this is a directory (the letter d) or not (the minus sign). The following three symbols designate the permissions that the owner of the directory/file has on it, then go another three symbols for the permissions of the users belonging to the group assigned to the directory/file, and the final set of three symbols denotes the permissions of all the rest. The symbols in each of the set express consecutively the following permissions: read, write, and execute. The presence of a letter (correspondingly, r, w, or x) indicates that the permission is given, and the minus sign - that it is absent.

User The owner of the file/directory.

Group The users' group that has certain permissions on the file/folder. These permissions are presented by the 5th thru 7th symbols in the Permissions column.

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Note: If the VPS is being repaired (see page 39), the file manager root directory (/) corresponds to the /repair directory of the temporary VPS, in other words, it represents the root directory of the problem VPS, not that of the newly-created one.

Apart from viewing a list of files and directories with their essential properties, you are able to perform the following operations:

Create a new folder in the current directory (see page 29); Create a new text file in the current directory (see page 29); Edit existing text files (see page 29);

Upload a file from your local computer to the current VPS directory (see page 30);

Download a file from the current VPS directory to your local computer (by clicking the diskette icon in the Actions column);

Copy any number of files or folders to another directory inside the VPS (see page 30); Move any number of files or folders to another directory inside the VPS (see page 30); Edit the properties of any folder or file (see page 30).

 Remove any number of files or folders by selecting them and following the Remove link. To perform a certain operation (e.g. copying) on a number of directories or files, tick the corresponding checkboxes. The uppermost checkbox allows you to select all the directories and files at once.

Creating Folder

The page where you can indicate the name of a new folder to be created is accessible by following the Create Folder link on the File Manager page.

Enter the folder name in the Folder Name field and click Submit. The new folder will be created in the current directory (designated above the field).

Creating Text File

The Create File page allows you to create simple text files directly inside the VPS, without having to upload them from your local computer. The page where you can do it is accessible by following the Create File link on the File Manager page.

On the Create File page, you should enter the name of the file to be created in the current directory (this directory is indicated under the page heading) and, optionally, type the text of the file. Click Create when you are finished to create the new file.

Editing Text File

VZCC allows you to edit any text file inside your VPS directly thru the VZCC interface. The

Edit File page can be accessed by clicking on the central icon in the Actions column for the

corresponding text file on the File Manager page.

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Uploading File To VPS

The current version of VZCC allows you to upload external files to the VPS, one file at a time. The Upload File page is displayed after clicking the Upload File link on the File Manager page. Click the Browse button, navigate to the local file you wish to upload and double-click it. The path to the file will be displayed in the Specify File field. Another way of indicating the file is to enter this path manually.

When you click Upload, the file that you have specified will be uploaded to the current directory inside the VPS. For your reference, this directory is indicated above the Specify File field.

Copying Files and Folders Inside VPS

The Copy File(s) page, where you can perform the copy operation, gets displayed after you have selected one or more files and/or folders by ticking the corresponding checkboxes on the File

Manager page and clicked Copy.

On the Copy File(s) page, click Select and, in the popup window, navigate to the folder where you want to copy the files and/or folders, check the radio button to the left of it, and press

Select. The path to the target folder will be displayed in the Destination Path field. Click Copy to

begin the copy process.

Moving Files and Folders Inside VPS

The Move File(s) page, where you can perform the move operation, gets displayed after you have selected one or more files and/or folders by ticking the corresponding checkboxes on the File

Manager page and clicked Move.

On the Move File(s) page, click Select and, in the popup window, navigate to the folder where you want to move the files and/or folders, check the radio button to the left of it, and press

Select. The path to the target folder will be displayed in the Destination Path field. Click Move to

begin the move process.

Editing File or Folder Properties

The page where you can view and edit some properties of a certain file or folder is accessible by clicking the leftmost icon in the Actions column for the corresponding file or folder on the File

Manager page.

The information is given on the following file or folder general properties, whether editable or not:

Field Description Editable?

Name The name of the file or folder. Yes.

Path The path to the file or folder inside the VPS. No. See Moving Files and Folders Inside VPS for information on how to change the path.

Size The size of the file. To save the time needed to open the page, a link is given for a folder to calculate its overall size.

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Modified The date and time of the last modification of the file or folder.

No.

In case of a Linux-based VPS, you can also change such file/folder properties as permissions and ownership.

When you click Submit on the Change Properties page, your changes will be applied to the given file or folder.

Using SSH to Connect to VPS

If you are managing a Hardware Node with the Linux operating system installed, you can use Secure Shell (ssh) to remotely connect to the VPS you are operating and work inside its directory tree using standard Linux command line tools. To connect to the VPS by ssh, you should make sure that:

1 You are launching VZCC in Internet Explorer 5.0 or above. SSH connection to the VPS is

supported by other browsers only if you have a Java Virtual Machine on your computer.

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Note: If the VPS you are managing resides on the Hardware Node running Windows 2003

Server, please turn to the Using Remote Desktop Connection to Access VPS section (on page 33) to learn to manage a VPS by means of the Remote Desktop Protocol.

The SSH Client window is opened upon clicking on the SSH Connection icon on the VPS dashboard. You are presented with the Login and Password fields where you should enter the relevant information (Root or any other user name you might have created for this VPS and this user's password) to be passed to the ssh server inside the VPS.

After you have filled in these two fields, press the Login button. If you are doing this for the first time, your browser may display a window like this asking you to install additional components:

Figure 3: Installing ActiveX SSH Client

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Using Remote Desktop Connection to Access VPS

For a VPS running Windows 2003 Server, you can use Remote Desktop Connection - a standard Windows application - to connect to the VPS by means of the Remote Desktop Protocol (RDP). The feature is available only for Internet Explorer 5.0 or above. It is not supported by other browsers. To connect to the VPS via RDP, you should make sure that the VPS is running. If it is not, start it.

Note: If you are managing a Linux-based Virtual Private Server, please turn to the Using SSH to Connect to VPS section (on page 31) to learn to manage the VPS by means of Secure Shell.

The Remote Desktop window is opened upon clicking on the Remote Desktop Connection icon on the VPS dashboard. You are presented with the Login button that you should press to open the Remote Desktop session. If you are doing this for the first time, your browser may display a window like this asking you to install additional components:

Figure 4: Installing Remote Desktop ActiveX Control

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Backing Up and Restoring Single

VPS

A regular backing up of the existing Virtual Private Servers is essential for any VPS reliability. Any Virtual Private Server is defined by its operating system files, applications installed, configuration files, and personal information. VZCC allows you to back up all these components.

There are two ways to get to the VZCC page where you can manage the backups of any given VPS. If you have already backed up this VPS, you can access this page by opening the Backups link on the VZCC main menu and then clicking on the hostname or ID of the VPS the backups of which you wish to manage. If not, then simply go to the Maintenance tab of the VPS dashboard.

Note: Apart from dealing with VPS backups, the Maintenance tab gathers links for all those

operations that would guarantee the integrity and overall operability of your VPS, such as reinstalling the VPS (the Reinstall VPS link) and mounting the VPS in the Repair Mode (the

Repair Mode link).

For a VPS that has been backed up, a table describing its backup(s) is displayed:

Backed Up The date and time when the backing up was performed. Size The size of the backup.

Type Denotes if it is a full or incremental backup. An incremental backup stores not all the files and settings of the VPS at the given period of time, but only the changes the VPS has undergone since the last backup.

You can manage your backups on this page in the following ways:

 The New Backup button begins the process of backing up the current state of the VPS, be it running or not. The description of all possible VPS statuses is provided in the VPS Statuses section (on page 61). VZCC places the backup of the VPS onto the default Backup Node in your Virtuozzo datacenter, and if there is no such Node - to the Node where the VPS is hosted. For a Service VPS user, the button is available only if you have not reached the maximum number of allowed backups for the VPSs residing on this Hardware Node. If you have, remove one of the backups to yield more extra space (see below for details) or ask your provider for help. The Node administrator can in this case use VZMC to change the number of the backups allowed. For more details see Advanced Tasks > Customizing

VZCC/VZPP Appearance > Common Tasks > Setting Maximal Backups Number in the

Virtuozzo User's Guide.

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 The Restore VPS button allows to restore the VPS from the backup currently selected in the table. Only one backup should be selected for this operation. The opened page provides instructions to lead you through the process. The VPS will be restored with all the values overwritten from the backup, including the hostname, IP address, application set, etc. The changes in the VPS made after the date of this backup will be lost after the VPS has been restored. Mind that you have to confirm restoring the VPS on the Restore Confirmation page to accomplish the process.

Note: If you are using a VPS IP address to connect to the VPS, you may have to reconnect

to it with the IP address retrieved from the backup after the VPS is restored.

 The Remove Backups button removes the VPS backup(s) currently selected in the table. Usually this is done to provide extra space for making new VPS backups. Use the checkbox at the upper right corner to select/deselect all the backups at once.

A Service VPS user who has reached the limit on the number of VPS backups he/she is allowed to create can make use of the Renew Backup button to renew a VPS backup without having to delete any of the existing VPS backups. By default, the oldest backup is renewed. Another VPS backup can also be renewed by selecting the checkbox opposite the corresponding backup and clicking on the Renew Backup button. Mind that only one backup can be renewed at a time.

 Clicking on a backup date in the table opens the Backup Details page where you can also restore or remove the corresponding VPS backup.

Note: If the VPS has no backups, only the New Backup button is available on the current page.

Backup Details

The Backup Details page available by clicking any backup link on the list of VPS backups provides general information on the corresponding backup and lets you perform a number of actions on the given backup by pressing the corresponding buttons. The information on backups is presented in the following table:

Creation Date The date and time when the backing up was performed. Backup Size The size of the backup.

Backup Type Denotes if it is a full or incremental backup. An incremental backup stores not all the files and settings of the VPS at the given period of time, but only the changes the VPS has undergone since the last backup.

Hostname The hostname the VPS had at the backup time. If the VPS is restored from this backup, this hostname is also restored and replaces the current one.

IP Address(es) The IP address(es) the VPS had at the backup time. If the VPS is restored from this backup, these addresses are also restored and replace the current one(s).

Applications Installed

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 The Browse Backup link (see page 36) allows you to browse the directory structure of the archived VPS as if it had been already restored and to restore only the needed files and folders.

 The Restore VPS button restores the VPS from the current backup. The changes in the VPS made after the date of this backup will be lost after the VPS has been restored. Mind that you have to confirm restoring the VPS on the Restore Confirmation page to accomplish the process.

 The Remove Backup button removes the current VPS backup. Usually this is done to provide extra space for making new VPS backups.

Browsing Backup Contents

VZCC allows you to browse the directory structure of any VPS backup as if this backup had already been restored and restore only the needed files and folders. The Browse Backup page opens after you follow the Browse Backup link on the Backup Details page (see page 35).

The contents of any directory inside a backup is presented in the table providing the following information:

T The icon in this column indicates if this is a directory or a file. Name The name of the directory or file.

Size The size of the file.

Modified The date and time of the last modification of the directory or file.

It is worth noting that if you are browsing an incremental backup, the information is shown not only on the files and folders from this backup, but on all the contents of the VPS, should it be restored from this incremental backup. In other words, the backed up VPS is always presented in its integrity and not as a collections of sporadic changes from the incremental backup.

To restore separate files and folders from the backup to the actual VPS, just select them by ticking the corresponding checkboxes in the rightmost column and click the Restore link.

Managing Backups of Multiple VPSs

Any Virtual Private Server is defined by its operating system files, applications installed, configuration files, and personal information. VZCC allows you to back up all these components. A regular backing up of the existing Virtual Private Servers is essential for any VPS reliability.

The Node Backups page opens after clicking on the Backups link on the VZCC main menu. If you have already any VPS backups, it displays a table summarizing these backups.

VPS ID The ID of the VPS that was backed up. Hostname The hostname of the VPS.