ZCS Multi Server Installation Guide Network Edition 6.0 Rev 11/2010
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Multiple-Server Installation : Final Set-Up

Final Set-Up
After the Zimbra servers are configured in a multi-node configuration, the following functions must be configured:
In order for remote management and postfix queue management, the ssh keys must be manually populated on each server.
If logger is installed, set up the syslog configuration files on each server to enable server statistics to display on the administration console, and then enable the logger monitor host. The server statistics includes information about the message count, message volume, and anti-spam and anti-virus activity.
ZCS ships a default zimbra user with a disabled password. ZCS requires access to this account via ssh public key authentication. On most operating systems this combination is okay, but if you have modified pam rules to disallow any ssh access to disabled accounts then you must define a password for the zimbra UNIX account. This will allow ssh key authentication for checking remote queues. See the Zimbra wiki article, Mail Queue Monitoring.
Set up the ssh keys.
To populate the ssh keys, on each server, as Zimbra user (su-zimbra). Type zmupdateauthkeys and press Enter. The key is updated on
/opt/zimbra/.ssh/authorized_keys.
Enabling Server Statistics Display.
In order for the server statistics to display on the administration console, the syslog configuration files must be modified.
1.
On each server, as root, type /opt/zimbra/libexec/zmsyslogsetup. This enables the server to display statistics.
2.
On the logger monitor host, you must enable syslog to log statistics from remote machines.
a.
Edit the /etc/sysconfig/syslog file, add -r to the SYSLOGD_OPTIONS setting, SYSLOGD_options=”-r -m 0”
b.
Stop the syslog daemon. Type /etc/init.d/syslog stop.
c.
Start the syslog daemon. Type /etc/init.d/syslog start.
Note: On DEBIAN AND UBUNTU, step 2 is a s follows
a.
Edit the /etc/default/syslogd file, add -r to the SYSLOGD_OPTIONS setting, SYSLOGD_options=”-r -m 0”
b.
Stop the syslog daemon. Type /etc/init.d/sysklogd stop.
c.
Start the syslog daemon. Type /etc/init.d/sysklogd start.
Note about MTA servers
New installs of ZCS limit spam/ham training to the first MTA installed. If you uninstall or move this MTA, you will need to enable spam/ham training on another MTA, as one host should have this enabled to run zmtrainsa --cleanup. To do this, set zmlocalconfig -e zmtrainsa_cleanup_host=TRUE.

Multiple-Server Installation : Final Set-Up

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ZCS Multi Server Installation Guide Network Edition 6.0 Rev 11/2010
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