You can configure the real-time graph in the following ways:
• You can configure how often the graph is updated by entering a sampling
period (in seconds).
• You can configure the total time period that the graph displays historical data for, by entering the period to display (in minutes).
• If you are running a cluster of web servers on different machines you can specify which web server to monitor by selecting the web server from the drop down list.
After you change any of these fields, click the Change monitoring configura-
tion button for the changes to take effect.
4.4 Using the Traffic History Pages
The traffic history pages are useful for viewing recent activity across your web server system. They enable you to view graphs of traffic, analyzed over the last week or 24 hour period.
The pages enable you to view traffic history in the following ways: • Traffic Overview — This page enables you to view the total traffic on
specific web servers (on different machines), Virtual Servers or Subservers. • Website Comparison — This page enables you to compare the traffic on
your busiest websites.
• Cluster Traffic Analysis — This page enables you to compare the traffic
on the web server machines in your cluster20.
Using the Traffic Overview Page
Use the traffic overview page to view the total traffic on web server machines, Virtual Servers or host headers. Access the page by clicking the Traffic Over-
view link in the Web Controller menu.
20. Normally a machine in a cluster runs just one web server although it can run more, as described in the Zeus Web Server User Guide.
The page displays a graph of total traffic in either hits per minute or bytes per second over the last week or 24 hour period. The total is calculated by adding together the traffic on the machines, Virtual Servers and host headers that you specify.
Select which information to plot, in the following way:
• Select whether you want to view a total of traffic on all web servers on all machines in your cluster, or just one web server. If you only want to see traffic for one web server machine, select it in the drop down list. • Select whether you want to view a total of traffic on all running Virtual
Servers, or just one of them. If you only want to see traffic for one Virtual Server, select it in the drop down list.
• Select whether you want to view a total of traffic on all host headers, or just one of them. If you only want to see traffic for one host header, click the This host header radio button, then enter the host header name. If you selected an individual Virtual Server in the previous step, the host header you enter must be running on that Virtual Server, otherwise no results will be displayed.
Select how the traffic overview should be displayed, as follows:
• Specify whether to view hits per minute or bytes per second, by selecting either from the drop down list.
• Specify whether to view statistics for the previous 24 hours, or previous week, by selecting the value from the drop down list.
Click the Plot button for the changes to take effect.
Using the Website Comparison Page
Use the website comparison page to compare the traffic on your busiest websites. Access the page by clicking the Website Comparison link in the Web Controller menu.
The page displays a graph of traffic on your busiest websites (or host headers), using a different colored line for each of them. The traffic can be displayed in either hits per minute or bytes per second over the last week or 24 hour period.
The page can also display a “five minute snapshot”, enabling you to compare the traffic on your busiest host headers in the last five minutes only.
Select which information to plot, in the following way:
• If you have a cluster containing multiple web server machines, select which of them you want to view traffic for. To do this, select the machine in the drop down list.
• If you want to compare your busiest Virtual Servers, select how many to view on the graph. Note that if a Virtual Server has had no traffic, it will not appear in the graph.
• If you want to compare your busiest host headers, select how many to view on the graph. You can choose to view just the busiest host headers on a specified Virtual Server, or the busiest host headers across all Virtual Servers.
• If you want to view the five minute snapshot, click the appropriate radio button. You can choose to view the snapshot for only the busiest host headers on a specified Virtual Server, or for the busiest host headers across all Virtual Servers.
Select how the graph of traffic should be displayed, as follows:
• Specify whether to view hits per minute or bytes per second, by selecting either from the drop down list.
• Specify whether to view statistics for the previous 24 hours, or previous week, by selecting the value from the drop down list.
Click the Plot button for the changes to take effect.
Using the Cluster Traffic Analysis Page
Use the cluster traffic analysis page to compare traffic on the web server machines in your cluster. Access the page by clicking the Cluster Traffic
Analysis link in the Web Controller menu.
The page displays a graph of traffic on the web server machines in your cluster, using a different colored line for each of them. The traffic can be
displayed as either hits per minute or bytes per second, over the last week or 24 hour period.
Below the graph, all the web server machines in the cluster are listed. Clicking the name of a machine in this list takes you to the Traffic Overview page, and displays the total traffic for this machine.
Select how the graph of traffic should be displayed, as follows:
• Specify whether to view hits per minute or bytes per second, by selecting either from the drop down list.
• Specify whether to view statistics for the previous 24 hours, or previous week, by selecting the value from the drop down list.
Click the Plot button for the changes to take effect.
4.5 Introduction to Setting Up SSL Security
Zeus Web Server supports 128 bit SSL security and enables you to set this up easily. This section illustrates how to set up SSL security from scratch using a self-signed certificate.
For a more comprehensive explanation about the different steps and options, and for more detailed information about using a signed certificate from a Certification Authority (CA), refer to the online help.