When using clusterssh sometime cannot connect to cssh due to recent upgrade. [email protected]:~> cssh Connection to server failed -- (version 11.0) No protocol specified at /usr/lib/perl5/vendor_perl/5.26.1/App/ClusterSSH.pm line 1983. [email protected]:~> echo…

This is simple guide on how to debug crash Centos server using kernel crash dump. The program we use is Kdump. When a kernel crash or kernel panic, the program…