Shared Memory allocation in jail

2012-01-05 Thread bsd
Hi, 

I am trying to run both postgres and zabbix in the same jail and I am only able 
to start postgres or zabbix not both of them. 

I have tuned my sysctl on master host as follow : 

kern.ipc.shmmax=268435456
kern.ipc.shmall=409600
kern.ipc.semmap=256

security.jail.allow_raw_sockets=1
security.jail.sysvipc_allowed=1
security.jail.enforce_statfs=1


No special tunning on jail host. 


I have also tunned in rc.conf 
jail_sysvipc_allow=YES



I am still not able to start both at the same time. 


Any idea ? 

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Re: Shared Memory allocation in jail

2012-01-05 Thread bsd
Le 5 janv. 2012 à 14:56, bsd a écrit :

 Hi, 
 
 I am trying to run both postgres and zabbix in the same jail and I am only 
 able to start postgres or zabbix not both of them. 
 
 I have tuned my sysctl on master host as follow : 
 
 kern.ipc.shmmax=268435456
 kern.ipc.shmall=409600
 kern.ipc.semmap=256
 
 security.jail.allow_raw_sockets=1
 security.jail.sysvipc_allowed=1
 security.jail.enforce_statfs=1
 
 
 No special tunning on jail host. 
 
 
 I have also tunned in rc.conf 
 jail_sysvipc_allow=YES
 
 
 
 I am still not able to start both at the same time. 
 
 
 Any idea ? 

Infos here were helpful : http://www.freebsddiary.org/jail-multiple.php

I have 

• re-configure /boot/loader.conf
• configured sysctl.conf with various options


# rebooted and the issue was solved. 


 
 ––
 - Grégory Bernard Director -
 --- www.osnet.eu ---
 -- Your provider of OpenSource appliances --
 ––
 OSnetOSnetOSnetOSnetOSnetOSnetOSnetOSnetOSnetO
 
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--- www.osnet.eu ---
-- Your provider of OpenSource appliances --
––
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Re: Shared Memory allocation in jail

2012-01-05 Thread Alejandro Imass
On Thu, Jan 5, 2012 at 8:56 AM, bsd b...@todoo.biz wrote:
 Hi,

 I am trying to run both postgres and zabbix in the same jail and I am only 
 able to start postgres or zabbix not both of them.



Yeah bro, it bit me in the ass as well ;-) the SysV IPC is common for
the whole system. So anything that uses IPC in jails will have to go
through this process

You have to change the Pg user's id and the chown the Pg files. I use
a nomeclature for this and is the last 3 digits of the jail's IP and
the original uid. Example The jail on 192.168.101.124 has a Pg user of
70124 for port NATing I use the contrary nomenclature like 12480 is
the network port 80 of the same jail in th public IP as 12480.

Anyway here is my recipe:

pw usermod pgsql -u 70124
 pw groupmod pgsql -g 70124
 chown -R pgsql /usr/local/pgsql/
 chgrp -R pgsql /usr/local/pgsql/

When you run ipcs from the jail You should the see something like the
example below, where there is still one Pg on uid 70 but from the
jail's perspective it's the pgsql user who now has uid of 70124

Message Queues:
  T   ID  KEY MODEOWNERGROUP

  Shared Memory:
  T   ID  KEY MODEOWNERGROUP
  m  1179648  5432001 --rw--- 70   70
  m   1310730 --rw--- 70   70
  m  1572866  5432002 --rw--- pgsqlpgsql

  Semaphores:
  T   ID  KEY MODEOWNERGROUP
  s  1703936  5432001 --rw--- 70   70
  s  1703937  5432002 --rw--- 70   70
  s  1703938  5432003 --rw--- 70   70
  s  1572867  5432004 --rw--- 70   70
  s  1572868  5432005 --rw--- 70   70
  s  1572869  5432006 --rw--- 70   70
  s  1572870  5432007 --rw--- 70   70
  s  1179655  5432008 --rw--- pgsqlpgsql
  s  1179656  5432009 --rw--- pgsqlpgsql
  s  1179657  5432010 --rw--- pgsqlpgsql
  s  1179658  5432011 --rw--- pgsqlpgsql
  s  1179659  5432012 --rw--- pgsqlpgsql
  s  1179660  5432013 --rw--- pgsqlpgsql
  s  1179661  5432014 --rw--- pgsqlpgsql

Cheers,

-- 
Alejandro Imass
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