To check top 20 largest consumer of physical memory (resident set size). crash> ps -G | sed ‘s/>//g’ | sort -k 8,8 -n | awk ‘$8 ~ /[0-9]/{ $8 = $8/1024″ MB”; print }’ | tail -20 To check the number of hugepages. crash> p -d nr_huge_pages Update: A) crash dump was captured from following … Read more
I think that sysctl parameter is for viewing only. You’ll want to use the /sys/module/nf_conntrack/parameters/hashsize interface for runtime changes, and the hashsize module option to set it during initial module load. You’d want an entry in a /etc/modprobe.d/ file that looks something like this: options nf_conntrack hashsize=XXXXX
You have to use the template-module for this. Here’s an example task: – name: Create motd template: src: “motd.j2” dest: “/etc/motd” The file motd.j2 (placed in the templates-subdirectory of your role) could then look like this: Welcome to host {{ansible_hostname}}! {{ansible_hostname}} will then be replaced with the hostname. Be sure to “gather facts” in your … Read more
When the gpg –gen-key command hangs like this, log in to another shell and perform the following command: dd if=/dev/sda of=/dev/zero (This command basically reads from your hard drive and discards the output, because writing to /dev/zero will do nothing.) After a few seconds / minutes, the key generation command should complete.