1.6.0 kubelet fails with error "misconfiguration: kubelet cgroup driver: "cgroupfs" is different from docker cgroup driver: "systemd"
In order to use intel graphics in skylake processor, add the following as grub parameter
fence_kvm, do googling for details.
This how to create stonith in pcs
[root@nfs01 ~]# pcs stonith create xvm-fence-nfs01 fence_xvm port="nfs01" pcmk_host_list="nfs01"
[root@nfs01 ~]# pcs stonith create xvm-fence-nfs02 fence_xvm port="nfs02" pcmk_host_list="nfs02"
In HPC, we may need to protect head node from unnecessary heavy process that may cause login problem for users. One of the solutions is by using cpulimit. We can create a cronjob to monitor all processes and set certain limit for them. This is how I usually did in CentOS/RHEL 7.x.
- Install cpulimit package from EPEL repo.
yum install cpulimit
- Create a script to monitor the process. The script below is a modified version of the script in this forum. You can modify inputs of the first 3 variables:
CPU_LIMIT, BLACK_PROCESSES_LIST, and WHITE_PROCESSES_LIST.
In IBM PHPC 4.2.1, when you add new metric and want them to be shown in web portal, you may get the following alert
At this point, your new metric column will be empty because the loader failed to load entries to web database.
Solution: Continue reading
If you can’t get to the login page (booting gets stuck at “Wait for Plymouth Boot Screen to Quit”) after CUDA driver installation, then it’s probably because the kernel is trying to load xorg.conf created by NVIDIA driver. I got this experience in my laptop that has Intel + NVIDIA GPUs running CentOS 7.
Workaround Solution: Continue reading