Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Network Physical Connectivity Check for Solaris and Linux

Network connectivity checks For the server without OS  ( just Racked hardware and powered up)   For X86 Hardware We have to make LED checks – like when we disconnect the cable at the server side / switch side the Link / Act LEDs should lit...

11

Solaris Troubleshooting : Using Truss to Identify the Signals sending to a Process

One of the Sample Issue: Customer frequently sees in /var/adm/messages syslogd: going down on signal 15 which indicates that the system rebooted from a normal shutdown or init 6, yet no reboot has actually occurred and uptime indicates that no reboot occurred. If you stop the...

4

Unix Admin Reference – Veritas Volume Manager Volume States and Plex States

    While Troubleshooting Veritas Volume Manager, Understanding volume and plex states is key part to investigate about the current issue related to the Veritas Volumes. In this post, I made little effort to write all the possible Volume and Plex states so that it can...

14

Are you ready to encounter a complete Datacenter power failure ?

 The role of system administration involves three different responsibilities. 1. Be ready to Prevent the issues which are Expected to Arise 2. Be ready to Resolve the issues which are already Expected but couldn’t prevent from occurring. 3. Be Ready to Resolve the issues which are...

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