Hello,

I really don't know what to do so I hope to receive some help from you.

As many users, I have no many experience with unix system, anyway:

I have a linode 1024 with ubuntu 12.04 lts 64bit.

I installed apache2, mysql, php5, drupal, postfix, clamav and so on.

My server goes out of memory, and it happens quite often, 7 8 times a day, and all is stalled, I must reboot from linode.

I ran the lish console and I received a log in which it is clear that many apache processes were killed, like:

Out of memory: Kill process 11685 (apache2) score 24 or sacrifice child

Killed process 11685 (apache2) total-vm:431896kB, anon-rss:12616kB, file-rss:2992kB

Reading and searching in the web, first of all I installed nginx in front of Apache in order to have a webserver that can provide static page faster and allow apache to use less resources.

This works, but the server halts anyway.

Then I reduced some parameters in apache2.conf as follow:

StartServers 1

MinSpareServers 1

MaxSpareServers 5

ServerLimit 64

MaxClients 64

MaxRequestsPerChild 4000

The problem is still there…

I modified my ubuntu configuration in order to reboot any time there is an out of memory, and it happens quite often.

My problem is that I don't know where to find the log that make the server crash, because now if I connect and open the lish, I receive simply the login, in which I must put my ssh credentials in order to enter into the server. but where can I see the log?

At the end, some statistics:

This is the output of the free -m:

total used free shared buffers cached

Mem: 987 977 9 0 1 88

-/+ buffers/cache: 888 99

Swap: 2047 737 1310

and this is a "top" screen…

Tasks: 206 total, 1 running, 205 sleeping, 0 stopped, 0 zombie

Cpu(s): 0.9%us, 0.4%sy, 0.0%ni, 87.7%id, 11.0%wa, 0.0%hi, 0.0%si, 0.0%st

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

4648 www-data 20 0 826m 180m 67m D 8 18.2 5:07.67 apache2

469 root 20 0 0 0 0 S 2 0.0 0:46.87 kswapd0

2569 mysql 20 0 2142m 45m 1352 S 1 4.7 3:20.06 mysqld

1 root 20 0 24340 684 152 S 0 0.1 0:03.17 init

2 root 20 0 0 0 0 S 0 0.0 0:00.01 kthreadd

3 root 20 0 0 0 0 S 0 0.0 0:00.03 ksoftirqd/0

4 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/0:0

5 root 0 -20 0 0 0 S 0 0.0 0:00.00 kworker/0:0H

7 root RT 0 0 0 0 S 0 0.0 0:00.06 migration/0

8 root 20 0 0 0 0 S 0 0.0 0:00.00 rcu_bh

9 root 20 0 0 0 0 S 0 0.0 0:20.04 rcu_sched

10 root RT 0 0 0 0 S 0 0.0 0:00.02 migration/1

11 root 20 0 0 0 0 S 0 0.0 0:00.03 ksoftirqd/1

12 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/1:0

13 root 0 -20 0 0 0 S 0 0.0 0:00.00 kworker/1:0H

14 root RT 0 0 0 0 S 0 0.0 0:00.02 migration/2

15 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/2

16 root 20 0 0 0 0 S 0 0.0 0:00.20 kworker/2:0

17 root 0 -20 0 0 0 S 0 0.0 0:00.00 kworker/2:0H

can you help me please?

thank you!