Administration Guide › Subscription › About On-Demand Updates

About On-Demand Updates

An on-demand update is different from a scheduled update in that it is performed immediately and updates only the selected server. You can invoke an on-demand update for only one CA Enterprise Log Manager server at a time. Before you perform an on demand update on a subscription client, first update its proxy server.

Typically, scheduled updates keep all of your servers updated with the latest binary files and your management server updated with the latest configuration and content files. However, it is sometimes appropriate to invoke an off-schedule update to a single server.

Consider using on-demand updates in the following cases:

• A subscription event failure or warning is reported for the management server, for example:

  Failed to connect to EEMServer
  

  Error installing content in EEM
  

  Select the management server and click Update Now. If the management server is configured as the proxy for content updates, the server downloads new updates from the CA Subscription Server. Then the server pushes the content updates to the content repository. If this server is configured as a proxy for clients, it makes available the binary updates to its clients on a first-come-first-serve basis.

  Note: Alternatively, you can wait until the next scheduled update session, when any incomplete processing resumes and completes.

• A subscription event failure message indicates that download is disrupted. If download is disrupted on only one proxy server, performing an on-demand update attempts the download again. An on-demand update is advisable if you notice the failure shortly after it occurs. If the start time between proxy and client is sufficient, an on-demand update of the proxy can complete before the scheduled update begins by clients who get updates from that proxy.
• You install a new CA Enterprise Log Manager, configure it as a proxy, and want to help ensure that the latest updates are applied before using it.
• You notice that a module needed by a client was not selected as a module to download. However, that module was selected as a module to download by the proxy. Running Update Now on the client installs the missing updates.
• You have downloaded an offline subscription package and copied it to an offline subscription proxy. Performing a manual update on the offline proxy whenever you transfer new files helps ensure that the updates are available when offline subscription clients request them.