[syslog-ng] Running multiple syslog-ng instances on the same host (RHEL6 CO6 SL6)
erempel at uvic.ca
Sun Jan 20 17:31:35 UTC 2019
In my environment we want to have isolation between the standard OS
based syslog-ng service and the central syslog-ng collector service,
which of course is running on a host that already has an OS based
syslog-ng process running on it.
Running muliple syslog-ng daemons under systemd is not so difficult.
Copy the system service file and systemd automatically registers a .d
folder for custom configurations, however, there is nothing automatic
about the System V init mechanism used in the RHEL6 based systems.
Don't worry because they syslog-ng init script from the copr yum
repository (https://copr.fedorainfracloud.org/coprs/czanik) starting at
3.19 has already thought of this and made multiple instances as
automatic as they can be.
Quick steps to create a second syslog-ng instance:
1. Decide on the new name extension (shown here is yourName)
2. Copy the included init script
cp /etc/init.d/syslog-ng /etc/init.d/syslog-ng-yourName
3. Change the SYSLOGNG_SUFFIX value in your new init script to the value
"-yourName". You need the leading hyphen because your added -yourName to
the init file name.
4. Copy and customize the included customization file
cp /etc/sysconfig/syslog-ng /etc/sysconfig/syslog-ng-yourName
By default all of the configuration and runtime files will default to
file names including the -yourName suffix, so very little if any
customization should be needed.
5. Create a new syslog-ng configuration file for your new instance
6. Enable the auto-start of your new instance
chkconfig --add syslog-ng-yourName
7. Start your instance
/sbin/service syslog-ng-yourName start
Thanks again to all of the people adding value to an already great product!
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