Nice quick way to add public keys to the authorized_keys file on a remote host ssh-copy-id -i ~/.ssh/id_rsa.pub user@hostname
Friday, February 17, 2012
Monday, February 13, 2012
After installing the compute nodes on a new Rocks Cluster it was found that a few nodes kept asking for SSH password. These should have been passwordless SSH and it was working on some of the compute nodes.
Try the following #rocks sync host sharedkey compute
Try #rocks run host "/opt/rocks/bin/411get --all"
if that works,
Try #rocks sync users on the frontend
This cured the password prompt problem on the cluster.
This cured the password prompt problem on the cluster.
Monday, February 6, 2012
After taking out the 7 screws from the back panel the power supply PCB was revealed. On close examination it was found that the two 1000uF 25Volt electrolytic Capacitors on the power supply board were swollen (see picture below and note the pressure seals on the capacitors, both are leaking electrolyte), they were replaced and the fridge began to cool again, Result!
Do these repairs at your own risk, electricity is dangerous, you have been warned.
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