We recently had an issue where we had to rebuild our RAID-6 array. After rebuilding the array, our cluster did…
Category Archives: System Admin
Enable Passwordless SSH to Compute Nodes (Rocks Linux)
A few of the users on our server have run into issues where, when running MPI jobs, they get an…
Group Access to All Files
On every cluster, there is most likely a group of users who want to allow the entire group to have…
Frustrations of a System Admin
There are times when I absolutely love being the admin for our group’s high performance computer. But there are also…
Rocks Linux Node Install Error, Boots to Grub
We had a problem recently with one of our nodes that required replacing the motherboard. After replacing the motherboard, I…