Werk #13732: mk_oracle on AIX, Solaris and UNIX: Solve sync. vs. async sections on hosts with systemd
| Component | Checks & agents | ||||||||||
| Title | mk_oracle on AIX, Solaris and UNIX: Solve sync. vs. async sections on hosts with systemd | ||||||||||
| Date | Aug 4, 2022 | ||||||||||
| Level | Trivial Change | ||||||||||
| Class | Bug Fix | ||||||||||
| Compatibility | Incompatible - Manual interaction might be required | ||||||||||
| Checkmk versions & editions |
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The agent plugin "mk_oracle" implements its own caching functionality because
of long running SQL statements (and custom SQLs with own cache interalls). But
the execution of synchronous and asynchronous SQls does not work properly with
systemd anymore if the plugin is installed to ../check_mk_agent/plugins/
because the "check-mk-agent-sync.service" would wait for all child processes
and may take too long.
In order to solve this situation on hosts with systemd the "mk_oracle" must
be installed to ../check_mk_agent/plugins/NUMBER and is now triggered by
the "check-mk-agent-async.service" (which runs permanently, every minute).
Details:
- The plugin is now able to detect the installation folder
- On distros without systemd you can keep the plugin below ../check_mk_agent/plugins/
- On distros with systemd you have to install the plugin to ../check_mk_agent/plugins/NUMBER/
- The recommended NUMBER for this folder is 60
If the "mk_oracle" is installed to ../check_mk_agent/plugins/NUMBER the
result (which consists of the sync. and async. SQLs) is saved into the Checkmk
agent's spool directory
The limit of this spoolfile is three times the NUMBER (interval).
If the plugin is executed with any CL option, then the output is shown on "stdout" as before.