SORRY typo: http://www.linuxtopia.org/online_books/linux_administrators_security_guide/16_Linux_Limiting_and_Monitoring_Users.html#PAM
the above can clarify more about the ulimit stuff. The basic solution is to define the soft limit in the init script. I would go to make sure that the hard and the soft limits are the problem.. like ulimit -Sa >>/tmp/ulimit_test ulimit -Ha >>/tmp/ulimit_test this will make sure that the limits problem are in the soft and hard. It's a basic linux issue which is not related to squid but more to the distribution and how you define ulimits I assume the limit is on the bash level rather then on the OS level. http://www.linuxtopia.org/online_books/linux_administrators_security_guide/16_Linux_Limiting_and_Monitoring_Users.html#Bash hope it helps clarify the issue. There could be an option that will be added to the init.d script to specify the ulimit soft and hard by a config file or variable. I hope to post a new script for centos in the comming weeks. Eliezer On 09/14/2013 03:33 PM, Eliezer Croitoru wrote: > as stated before the mentioned solution was to insert the ulimit into > the init script to make sure the limit is absolute! > > there might be a chance for this to solve or help solve and find the issue: > On 09/14/2013 12:05 PM, Mohsen Dehghani wrote: >> Oh , no...it is 1024 >> thanks for the help >> Now I added 'ulimit -n 65000' in squid init file and the problem is >> resolved. But some questions: >> >> 1-why is it 1024 While I've set 65535 FD at compile time and squid user >> which is "proxy" has this much limitation in limit.conf file? >> 2-is it ok to increase FD limit in this way? >> 3-Apearantly according to "# cat /proc/sys/fs/file-max" my os FD limit is >> 400577. Can I increase squid FD to it >> 4-What is best FD limit for about 150Mbps bandwidth and 18000 RPM >> >> This could be ugly troubleshooting practice, but you can try to modify your >> init script (or upstart job, not sure how exactly squid is being started in >> ubuntu). The idea is to add 'ulimit -n > /tmp/squid.descriptors' and see if >> the number is really 65k. >> >> On 09/14/2013 09:41 AM, Mohsen Dehghani wrote: >>>> I don't see any logic here. Are you sure your squid is started not by >> root? >>>> Is replacing 'root' by 'squid' or '*' solves issue as well? >>> >>> When I manually start service by root, there is no file descriptor >>> warning and squid works as normal. >>> But when the system boots up and starts the service automatically, >>> squid runs out of FD. >>> >>> I've tested different the following settings without any luck. Every >>> time that the box reboots, I have to login and restart service manually. >>> >>> root soft nofile 65000 >>> root hard nofile 65000 >>> proxy soft nofile 65000 >>> proxy hard nofile 65000 >>> squid soft nofile 65000 >>> squid hard nofile 65000 >>> * soft nofile 65000 >>> * hard nofile 65000 >>> >>> It seems these settings only works if the user logins to system. >>> My squid user is "proxy"(I configured it at the time of compile). >>> >>> Maybe some useful info: >>> OS:Ubuntu 12.04 >>> >>> # ulimit -n >>> 65000 >>> >>> # squidclient mgr:info | grep 'file descri' >>> Maximum number of file descriptors: 65536 >>> Available number of file descriptors: 65527 >>> Reserved number of file descriptors: 100 >>> >>> >>> >>> >> >> >> >
