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Why open files limits set correctly on dedicated server but not on KVM machines?


Too many file descriptors on Debian, ulimit -n has no effectcentos/redhat: change open files ulimit without reboot?Increasing the maximum amount of open files for libvirtToo many open files with nginx, can't seem to raise limitulimit -n not persisting, tried everythingulimit -n not changing - values limits.conf has no effectProcess specific ulimit still low after changes to soft and hard ulimits“Open files” ulimit applied only when using 'su - userX' but not when I SSH into serverpam_limits: Operation not permitted for sshdOptimize Apache for high concurrent requests






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1















I have set open files for all users on a dedicated server A in /etc/security/limits.conf like below:



* hard nofile 1048576
* soft nofile 983040


And in /etc/pam.d/common-session I have loaded limits module like below:



session required pam_limits.so


I restarted server A and checking ulimit -Sn (soft limits) and ulimit -Hn (hard limits) displays the newly set values.



Now I have another dedicated server B in which I have 3 KVM machines. On the dedicated server B itself I have set open file as above and it works like a charm after a reboot. The same procedure for server's VMs fails and it shows default open files.



NOTE: They all have Debian OS



Is there something here I'm missing? Is it related to VMs at all? How should I set open files for VMs?










share|improve this question




























    1















    I have set open files for all users on a dedicated server A in /etc/security/limits.conf like below:



    * hard nofile 1048576
    * soft nofile 983040


    And in /etc/pam.d/common-session I have loaded limits module like below:



    session required pam_limits.so


    I restarted server A and checking ulimit -Sn (soft limits) and ulimit -Hn (hard limits) displays the newly set values.



    Now I have another dedicated server B in which I have 3 KVM machines. On the dedicated server B itself I have set open file as above and it works like a charm after a reboot. The same procedure for server's VMs fails and it shows default open files.



    NOTE: They all have Debian OS



    Is there something here I'm missing? Is it related to VMs at all? How should I set open files for VMs?










    share|improve this question
























      1












      1








      1








      I have set open files for all users on a dedicated server A in /etc/security/limits.conf like below:



      * hard nofile 1048576
      * soft nofile 983040


      And in /etc/pam.d/common-session I have loaded limits module like below:



      session required pam_limits.so


      I restarted server A and checking ulimit -Sn (soft limits) and ulimit -Hn (hard limits) displays the newly set values.



      Now I have another dedicated server B in which I have 3 KVM machines. On the dedicated server B itself I have set open file as above and it works like a charm after a reboot. The same procedure for server's VMs fails and it shows default open files.



      NOTE: They all have Debian OS



      Is there something here I'm missing? Is it related to VMs at all? How should I set open files for VMs?










      share|improve this question














      I have set open files for all users on a dedicated server A in /etc/security/limits.conf like below:



      * hard nofile 1048576
      * soft nofile 983040


      And in /etc/pam.d/common-session I have loaded limits module like below:



      session required pam_limits.so


      I restarted server A and checking ulimit -Sn (soft limits) and ulimit -Hn (hard limits) displays the newly set values.



      Now I have another dedicated server B in which I have 3 KVM machines. On the dedicated server B itself I have set open file as above and it works like a charm after a reboot. The same procedure for server's VMs fails and it shows default open files.



      NOTE: They all have Debian OS



      Is there something here I'm missing? Is it related to VMs at all? How should I set open files for VMs?







      debian virtual-machines dedicated-server ulimit






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked May 5 at 11:36









      ALHALH

      1431521




      1431521




















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