How to modify kernel parameter and make the changes permanent after reboot ?

Solution Unverified - Updated -

Issue

  • How to modify kernel parameter and make the changes permanent after reboot ?
  • How to make the below kernel changes permanent (reboot brings kernel parameters back to old value) ?
# sysctl -w kernel.sem="250 256000 32 1024"  
kernel.sem = 250 256000 32 1024  

# sysctl -w kernel.msgmni=1024  
kernel.msgmni = 1024  

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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