zabbix server Can't allocate shared memory for configuration cache Freebsd 1.7.1

[zebr]

Hi there.
I'm trying to install zabbix on my freebsd box
7.2 - PRERELEASE i386
Zabbix compiles fine, but when I start zabbix_server I get the following in the zabbix_server.log

 97982:20091106:002622.508 End of DBupdate_triggers_after_restart()
 97982:20091106:002622.509 In init_database_cache() size:27978312
 97982:20091106:002622.509 In init_configuration_cache() size:8388608
 97982:20091106:002622.509 Can't allocate shared memory of size 8388608 [Cannot allocate memory]

And the zabbix_server fails to start.
Any ideas how to fix it?

[sersad]

You must specify the parameter kernel.shmmax with your desired number of memory. If you want to change kernel.shmmax on running system type
sysctl -w kernel.shmmax=536870912

To test
sysctl -a |grep shmmax

This is worked on linux

[zebr]

Setting kern.ip.shmmax to bigger value doesn't solve the problem.

The same situation is on FreeBSD 6.2-STABLE i386.

[zebr]

1.7.2 alpha runs the same

The same stuff is with 1.7.2 alpha.
The same errors on FreeBSD and still no solution

[bee]

Any workaround?



Any workaround to solve this situation?

[emilode]

I ahve the same error

I have the same error with zabbix 1.8, FreeBSD 7.0. Changing shmax or changing the size in zabbix.conf have not helped.

error log shows: Can't allocate shared memory of size 67108864 [Invalid argument]
Can't allocate shared memory for configuration cache

UPDATE: Problem solved, seems that zabbix_server didn't use the correct zabbix_server.conf file.

[bee]

http://www.zabbix.com/forum/showthread.php?t=14987 works for me,

Spesific for FreeBSD machine:
kern.ipc.shmall=2097152
kern.ipc.shmmax=2147483648
kern.ipc.shmmni=4096
kern.ipc.semmsl=250
kern.ipc.semmns=32000
kern.ipc.semopm=100
kern.ipc.semmni=128

[kantela]

Thanks for the tip, it solved the problem I was facing.

[CeeEss]

http://www.zabbix.com/forum/showthread.php?t=14987 works for me,

Spesific for FreeBSD machine:
kern.ipc.shmall=2097152
kern.ipc.shmmax=2147483648
kern.ipc.shmmni=4096
kern.ipc.semmsl=250
kern.ipc.semmns=32000
kern.ipc.semopm=100
kern.ipc.semmni=128

Had the same issues starting proxy 1.8.2 on OpenBSD and server on CentOS5.4. Doubling shmmax while leaving .conf at defaults solved the problem for proxy and upping CacheSize to 128M worked for server.

Zabbix, a technote describing shm requirements for server/agentd/proxy and how they relate to default sysctl shm settings would be appreciated! While it seems that most people are finding settings that tentatively get around these problems, i doubt mine (at least) are optimal.

[vanderlanls]

Solvedhttp://www.zabbix.com/forum/images/smilies/smile.gif

http://www.zabbix.com/forum/images/smilies/smile.gifHi.

in my case it was necessary to add the following lines in / etc / sysctl.conf

kern.ipc.shmall=2097152
kern.ipc.shmmax=2147483648
kern.ipc.semmsl=250
kern.ipc.semopm=100

and the following lines in / boot / loader.conf

kern.ipc.semmni=128
kern.ipc.semmns=32000
kern.ipc.shmmni=4096

I restart the Zabbix server and run normally.


Thanks for the help.

Vanderlan Lima da Silva http://www.zabbix.com/forum/images/smilies/smile.gif

[CeeEss]

http://www.zabbix.com/forum/images/smilies/smile.gifHi.

in my case it was necessary to add the following lines in / etc / sysctl.conf

kern.ipc.shmall=2097152
kern.ipc.shmmax=2147483648
kern.ipc.semmsl=250
kern.ipc.semopm=100

and the following lines in / boot / loader.conf

kern.ipc.semmni=128
kern.ipc.semmns=32000
kern.ipc.shmmni=4096

I restart the Zabbix server and run normally.


Thanks for the help.

Vanderlan Lima da Silva http://www.zabbix.com/forum/images/smilies/smile.gif

And any other kind of voodoo, too. How did you arrive at these settings? This looks like Zabbix server, yes? On CentOS5.4, i had to increase CacheSize to 128M with no changes to shm. It seems that whatever works works when it works, but Zabbix needs to explain its resource requirements more clearly.

[umasse]

Same problem in Ubuntu 10.04

Ran into this issue with an Ubuntu 10.04 installation, running Zabbix 1.8.1 from the repositories.

I had to add this line to "/etc/zabbix/zabbix_server.conf"

CacheSize = 64M

Then I added a file called "60-zabbixshmem.conf" to the folder "/etc/sysctl.d/"
with this in it:

# Controls the maximum shared segment size, in bytes
kernel.shmmax = 134217728
kernel.shmall = 8388608
kernel.shmmni = 4096

This has made the error go away, Zabbix Server now runs, and is receiving values again.

[Andreas Bollhalder]

Howto get the size for shared memory

I think, we could get the value needed for the kernel shared memory from the Zabbix doucmentation like this (see http://www.zabbix.com/documentation/...abbix_server):

CacheSize 8M
HistoryCacheSize 8M
HistoryTextCacheSize 16M
TrendCacheSize 4M

This would give you 36MB. On most Linux system, the default is 32M and therefore too low. In this case of the default values, you should be fine to set "kernel.shmmax" to 64M.

If you increase any of the parameters, you have to increase the value for "kernel.shmmax" again. If there is any other service or program which requires shared memory, you must include that into the math too.

I assumed, that Zabbix is using 1 shared memory segment for all caches. If it's using one for each cache, then it would look different...

Andreas

PS: Would be nice, if Zabbix would provide this and more information in server status page.

[polar773]

Solution!

The only variable that was needed to change the kernel ..

kern.ipc.shmmax=67108864
kern.ipc.shmall=32768

can trust..

paulogomeskinoshita.blogspot.com

[mburns]

still getting this problem with ubuntu 10.04lts

Using a mediatemple default DE (512MB, generic linux shell) and am still having this problem.

• I've change my kernel shm{all,mni,max} variables (both live, and save to sysctl.conf and rebooting).
• clearing the IPC cache with ipcs/ipcrm between each step, too.
• set CacheSize to 130M, 64M, 32M, 128K. all with (varying sizes) of memory allocation errors on zabbix_server startup.
• not running zabbix-client concurrently, for testing.

System: Ubuntu 10.04 LTS. Postgres8.4. Zabbix 1.8.2 (apt-get) and now I've compiled Zabbix 1.9 from source.

Cannot allocate shared memory of size 111412 [No space left on device]
Could not allocate shared memory for configuration cache.

Is there a way to see how much free shared memory (in this context) is available. Presumably postgres is taking all of it up. Though *actual* memory allocation is far from full (350+M free).

I've tried set shm{mni,max,all} to really, really large values, just to see. Nothing.

Why my zabbix-server no happy?

[cherish2004]

Me too

23866:20140422:190736.554 using configuration file: /zabbix/zabbix/etc/zabbix_server.conf
 23866:20140422:190736.555 cannot attach shared memory for configuration cache: [12] Cannot allocate memory

My zabbix version is 2.2.3, and I install it on my linux vm, memory is 2G.
Any idear?
3Q!