CentOS 6.7 DRBD installation and configuration notes DRDB or Distributed Replicated Block Device is nice for HA situations of distributed block devices. This can be used for NAS, SAN, and a number of other use cases. ** NOTE THIS SETUP IS FOR ACTIVE/PASSIVE, NOT ACTIVE Primary: 192.168.1.60 (cluster1.rmohan.com) Secondary: 192.168.1.61 (cluster2.rmohan.com) Requirements – Two disks […]
Aditing Enable the Basic Security Module (BSM): /etc/security/bsmconv Configure the classes of events to log in /etc/security/audit_control: dir:/var/audit flags:lo,ad,pc,fc,fd,fm naflags:lo,ad # # lo – login/logout events # ad – administrative actions: mount, exportfs, etc. # pc – process operations: fork, exec, exit, etc. # fc – file creation # fd – file deletion # fm […]
Solaris system information 1. Solaris physical memory usage Script to get free/unused memory on Solaris can be found with command vmstat. Without options, vmstat displays a one-line summary of the virtual memory activity since the system was booted. Tested on Solaris 5.8, 5.9, 5.10. Can be wrong on Zones. Script ./mem_usage.sh #!/bin/sh mem_free=`vmstat 1 2 […]
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