Date: Thu, 13 Aug 2015 10:28:43 +1000 From: Aristedes Maniatis <ari@ish.com.au> To: freebsd-jail <freebsd-jail@freebsd.org> Subject: lots of semaphores in jails Message-ID: <55CBE4BB.6070605@ish.com.au>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --m27WuD2nOqsv7N4o20uo3KJL1dpPWbtdu Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I'm running a monitoring application called zabbix in each of about 32 ja= ils on a single host and running into a problem... zabbix_agentd [78335]: cannot create Semaphore: [28] No space left on dev= ice zabbix_agentd [78335]: unable to create mutex for log file Now, typically the solution to this problem is documented here: https://w= ww.zabbix.org/wiki/How_to/configure_shared_memory Basically we bump up some ipc settings: kern.ipc.shmall=3D409600 kern.ipc.shmmax=3D204800000 and allow ipc inside the jails: security.jail.sysvipc_allowed=3D1 With these settings I can get about 30 jails running with zabbix, but the= n no more zabbix instances will start. I guess I'm hitting some sort of l= imit, but I'm at a loss to understand what. Here is the output of ipcs an= d all the sysctls: https://gist.github.com/ari/a0a8b540f2ef832c41d2 How do I correlate my maximum settings with the data I'm seeing from ipcs= ? What limit am I hitting? Cheers Ari --=20 --------------------------> Aristedes Maniatis ish http://www.ish.com.au Level 1, 30 Wilson Street Newtown 2042 Australia phone +61 2 9550 5001 fax +61 2 9550 4001 GPG fingerprint CBFB 84B4 738D 4E87 5E5C 5EFA EF6A 7D2E 3E49 102A --m27WuD2nOqsv7N4o20uo3KJL1dpPWbtdu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlXL5LsACgkQ72p9Lj5JECpSrACffG0eUx1R87DHMQq+j8Y7blTZ HPIAniD/KM8l//0s8VP6X8vCq3DUtfZH =5pEs -----END PGP SIGNATURE----- --m27WuD2nOqsv7N4o20uo3KJL1dpPWbtdu--
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