jails opensearch in jail

[petru garstea]

Greetings,
I have created a FreeBSD 13.2 jail for opensearch(java based application).
Java package output requires fdesfs and procfs, hence I added to jail.conf the following options

mount.fdescfs = 1;
  mount.procfs = 1;

Opensearch`s performanceanalyzer plugin experiences an initialization issue by using the shared memory

[2023-05-16T12:04:16,244][INFO ][o.o.p.c.PluginSettings   ] [opensearch] Trying to create directory /dev/shm/performanceanalyzer/.
[2023-05-16T12:04:16,245][ERROR][o.o.p.c.PluginSettings   ] [opensearch] Invalid metrics location /dev/shm/performanceanalyzer/. Created: false (Expect True), Directory: false (Expect True), CanWrite: false (Expect True)
[2023-05-16T12:04:16,246][ERROR][o.o.p.c.PluginSettings   ] [opensearch] Having issue to load all config items. Disabling plugin.
org.opensearch.performanceanalyzer.config.ConfigFatalException: Having issue to use path: /dev/shm/performanceanalyzer/

Also the following options related to shared memory access were added to jail.conf

enforce_statfs = 1;
  sysvshm = new;
  sysvsem = new;
  sysvmsg = new;

And the tmpfs(5) is mounted to jail

tmpfs /pathToJail/dev/shm tmpfs rw,size=1g,mode=1777 0 0

The above changes did not help the performanceanlyzer to use the shared memory and to initialize properly.

Please advise.

Cheers,

 

[petru garstea]

I solved the issue by mounting the tmpfs to /metrics mount point.

Also i had to override the path in performance analyzer config.

Regards