Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base
This post will make some comparisons between NFSv4 and NFSv3, and introduce how to migrate from NFSv3 to NFSv4. As we all aware, NFSv4 is not just a simple protocol evolution of NFSv3. It has been fully redesigned to overcome the limitations of its predecessors. Comparison...
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...
In our previous example we have discussed about a scenario , in which we have copied a script to each host and then we executed the script remotely using another calling script from the centralized host ( which is having publick key – password less...
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...
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...
Solaris Multipathing software MPXIO operate now with new arrays using other protocols like SAS or iscsi, . The old Solaris luxadm command still manage FC arrays, but mpathadm command has been developed to work on all the arrays using FC, SAS, and Iscsi connections.
Solaris Zone: Container Creation
Below is the sample scenario where we tried to restore the dead paths of SAN connection using the powermt commands. Warning: Please use any of these commands only if you understand the current storage setup of your server clearly.
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...