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2.2.4. Implementing Server Failover
Beginning with
up2date-4.2.38
updates from a series of RHN Servers. This can be especially helpful in sustaining constant
updates if your primary RHN Proxy Server or RHN Satellite Server may be taken offline.
To use this feature, first ensure that you are running the required version of
manually add the secondary servers to the
the
/etc/sysconfig/rhn/up2date
domain names (FQDN) for the Proxy or Satellite immediately after the primary server,
separated by a semicolon (;). For example:
serverURL[comment]=Remote server URL
serverURL=https://your_primary.your_domain.com/XMLRPC; \
https://your_secondary.your_domain.com/XMLRPC;
noSSLServerURL[comment]=Remote server URL without SSL
noSSLServerhttp://your_primary.your_domain.com/XMLRPC; \
https://your_secondary.your_domain.com/XMLRPC;
Connection to the servers is attempted in the order provided here. You can include as many
servers as you wish. You may list the central RHN Servers, as well. This makes sense,
however, only if the client systems can reach the Internet.
2.3. Configuring the Red Hat Network Alert Notification
Tool with Satellite
The Red Hat Network Alert Notification Tool, the round icon in the panel of your Red
Hat desktop, can be configured on systems running Red Hat Enterprise Linux 3 or later
to recognize updates available from custom channels on your RHN Satellite Server. You
must ensure the RHN Satellite Server is configured to support this feature. (RHN Proxy
Server supports the applet without modification of client or server.) The steps to configure
the Red Hat Network Alert Notification Tool are as follows:
1. Ensure that your RHN Satellite Server is version 3.4 or later and that you have the
rhns-applet
RHN Satellite software channel for versions 3.4 and newer.
2. Retrieve the
rhn-applet-actions
Network Tools software channel. Install the package on all Red Hat Enterprise Linux
3 and newer client systems to be notified of custom updates with the Red Hat Net-
work Alert Notification Tool. The client systems must be entitled to the Manage-
ment or Provisioning service levels.
, the Red Hat Update Agent can be configured to seek
configuration file (as root). Add the fully qualified
package installed on the Satellite. The package can be found in the
Chapter 2. Client Applications
and
serverURL
noSSLServerURL
package with
up2date
. Then
up2date
settings in
or through the Red Hat
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