Mail Server Memory Allocation Problems and Table Lookup Issues
I have installed an OpenVZ server on Debian Squeeze. The virtual server has 8GB RAM, 586GB hard disk space, and I'm having forking issues with amavis. At times I go into the virtual server using vzctl enter mail, and begin getting fork errors right away.
Additionally there seems to be a lock issue with mysql.
Here are the results of: netstat -tap | grep mysql
root@mail:/# netstat -tap | grep mysql
tcp 0 0 *:mysql *:* LISTEN 1393/mysqld
tcp 0 0 localhost:34323 localhost:mysql ESTABLISHED 2090/smtp
tcp 0 0 localhost:mysql localhost:34322 ESTABLISHED 1393/mysqld
tcp 0 0 mail.domain:52579 www.domain.:mysql TIME_WAIT -
tcp 0 0 localhost:mysql localhost:34326 ESTABLISHED 1393/mysqld
tcp 0 0 localhost:34322 localhost:mysql ESTABLISHED 2089/smtp
tcp 0 0 localhost:mysql localhost:34323 ESTABLISHED 1393/mysqld
tcp 0 0 localhost:34326 localhost:mysql ESTABLISHED 2094/error
Here is the tail of my mail error log:
Mar 28 09:23:31 mail postfix/trivial-rewrite: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem
Mar 28 09:23:33 mail postfix/trivial-rewrite: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem
I don't understand why I'm still having issues with 8GB of memory allocated:
total used free shared buffers cached
Mem: 8388608 582428 7806180 0 0 0
-/+ buffers/cache: 582428 7806180
Swap: 0 0 0
Can anyone help?
Have a look in the syslog and your beancounters and look for resource shortages.
Allocating 8GB isn't enough for openvz, you'll probably need to increase kmemsize, and the various tcpsnd|rcvbuf will need upped as well.
So my hardware node has 24GB I am running 8GB on the mail server node only. You're saying that isn't enough? Wow, I thought that should be more than enough. What is considered enough?
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