<div>Hello,</div><div><br></div><div>I had an issue last night with a 0.8.54 nginx instance. Around 1AM, a HUP signal is sent to log rotation. This nginx instance is set up as a reverse proxy to an apache/php and it does some cache. Here is the proxy_cache related conf I've set up.</div>
<div><br></div><div>proxy_cache_path /CACHE levels=1:2:2 keys_zone=cache:256m inactive=1d max_size=20g;</div><div>proxy_cache cache;</div><div><br></div><div>Last night, the cache process manager has restarted well, but it has consumed all CPU available on the server. Moreover, the SAR command indicates that it did not seek, read or write on the disks (as the disk usage remains almost null). Our exploitation team had to restart nginx 40 minutes later and it solves the problem.</div>
<div><br></div><div>Has someone already experience such an issue ? Do you know why this could happened ?</div><div><br></div><div>Thx you</div><div>++ Jerome</div><div><br></div><div>PS: here is the related error_log:</div>
<div><br></div><div><div>2011/04/01 01:04:55 [notice] 25206#0: signal 1 (SIGHUP) received, reconfiguring</div><div>2011/04/01 01:04:55 [notice] 25206#0: reconfiguring</div></div><div><div>2011/04/01 01:04:55 [notice] 25206#0: using the "epoll" event method</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: start worker processes</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10450</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10451</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10452</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10453</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10454</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10455</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10456</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10457</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10458</div><div>2011/04/01 01:04:55 [notice] 25206#0: start worker process 10459</div><div>2011/04/01 01:04:55 [notice] 25206#0: start cache manager process 10460</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: signal 17 (SIGCHLD) received</div><div>2011/04/01 01:04:55 [notice] 25206#0: worker process 7164 exited with code 0</div><div>2011/04/01 01:04:55 [notice] 25206#0: worker process 7166 exited with code 0</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: worker process 30018 exited with code 0</div><div>2011/04/01 01:04:55 [notice] 25206#0: signal 17 (SIGCHLD) received</div><div>2011/04/01 01:04:55 [notice] 25206#0: worker process 7168 exited with code 0</div>
<div>2011/04/01 01:04:55 [notice] 25206#0: worker process 7170 exited with code 0</div><div>2011/04/01 01:04:55 [notice] 25206#0: worker process 7171 exited with code 0</div><div>2011/04/01 01:04:56 [notice] 25206#0: signal 29 (SIGIO) received</div>
<div>2011/04/01 01:04:56 [notice] 25206#0: signal 29 (SIGIO) received</div><div>2011/04/01 01:05:26 [notice] 25206#0: signal 17 (SIGCHLD) received</div><div>2011/04/01 01:05:26 [notice] 25206#0: worker process 7165 exited with code 0</div>
<div>2011/04/01 01:05:26 [notice] 25206#0: signal 29 (SIGIO) received</div></div><div><div>2011/04/01 01:45:55 [notice] 25206#0: signal 15 (SIGTERM) received, exiting</div><div>2011/04/01 01:45:55 [notice] 25206#0: signal 14 (SIGALRM) received</div>
<div>2011/04/01 01:45:55 [notice] 25206#0: signal 14 (SIGALRM) received</div></div><div>...</div><div><br></div><div><br></div>