Comment #3 on issue 1143 by [email protected]: gnt-cluster modify should allow you to change the --no-ssh-init option
https://code.google.com/p/ganeti/issues/detail?id=1143

After enabling renew-crypto is required is that "gnt-node add" gets a list of public keys to add to the new node's ~root/.ssh/authorized_keys from /var/lib/ganeti/ganeti_pub_keys.

When modify_ssh_setup=false ganeti_pub_keys is not populated, and there is no reliable way to know what the correct public keys for each node is because they were set up 'by hand'.

gnt-cluster renew-crypto will create new keys for all nodes, and populate ganeti_pub_keys and distribute them to ~root/.ssh/authorized_keys on all nodes.


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