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 Topic: cannot allocate memory |
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hburnswell
Joined: 01 Sep 2016
Posts: 1
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 Posted: Thu 01 Sep '16 20:13 Post subject: cannot allocate memory |
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All,
We seem to be having issues with our two load balanced proxy servers.
OS (both): Redhat 6.7
Ram (both): 24 GB
Apache (both): 2.2.31
Today we were receiving 500 responses from one of our two servers (node 2):
| Code: | | 10.10.1.254 - - [01/Sep/2016:06:47:17 -0700] "GET /path/to/login.pl?resource_url=http%3A%2F%2Fxxxxxxx.com%2FOA_HTML%2FLogin%3FrequestUrl%3Dhttps%3A%2F%2Fxxxxxxx.com%2FHTML%2FCustomLogin.jsp HTTP/1.1" 500 535 |
With the accompanying errors:
| Code: | [Thu Sep 01 06:47:17 2016] [error] [client 10.10.1.254] (12)Cannot allocate memory: couldn't create child process: 12: login.pl
[Thu Sep 01 06:47:17 2016] [error] [client 10.10.1.254] (12)Cannot allocate memory: couldn't spawn child process: /path/to/login.pl |
Bouncing apache on this node (2) fixed the issue by clearing the sessions and allocated memory.
It seems like httpd sessions/processes are not being cleared/closed. On node 1 (not bounced for weeks) there are hundreds of processes dating back several weeks (I'm not sure if that is to be expected or not?). The memory on node 1 seems ok as it has 8 GB free:
| Code: | # free -g
total used free shared buffers cached
Mem: 23 15 8 0 0 12
-/+ buffers/cache: 2 21
Swap: 23 0 23 |
I'm pretty new to trouble shooting apache problems in general, what can I do to track down what might be the issue here? Any guidance or direction is greatly appreciated.
TIA,
HB[/code] |
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