I accidentally discovered a feature introduced in systemd, which overrides the default SIGINT behaviour for the ctrl-alt-del (CAD) keystroke sequence. Previously, an entry in /etc/inittab such as the below would be sufficient to prevent an accidental CAD (e.g. when remotely connected to a console and using CAD to…
The error details [root@mynode ~]# /opt/puppetlabs/bin/puppet agent -t --server puppet_master.mycompany.com --environment production Warning: Unable to fetch my node definition, but the agent run will continue: Warning: Find /puppet/v3/node/?environment=production&configured_environment=produc... resulted in 404 with the message: Not Found:…
Some applications may require a dedicated core (and/or socket etc) to run optimally. We can achieve this by first * Setting PID 1 (systemd) affinity mask to 1, so that any child processes run only on this core * Manually starting new processes (which require their own core) on a spare…
These are some scribble notes helpful for understanding and managing pulp, the Redhat repository manager There are many many more things one can do with pulp (snapshots, non-rpm content, etc), but I'll just stick to the basics here. Services, start, stop etc Important: pulp_resource_manager and pulp_…
In CentOS 7, I was setting some kernel tuning parameters in /etc/sysctl.d conf files. net.ipv4.conf.default.rp_filter = 0 is demonstrated below Initially I had set a parameter in 2-test-profile.conf , however I discovered that the setting was being overridden somewhere. [root@linuxsvr sysctl.d]# grep…