Day 74 of DevOps, Day 24 of Azure. Both tasks today were about SSH keys, and specifically about which way round they point.

A Jenkins job needed one server to be able to reach another. An Azure task started by checking whether a key already existed, and the .ssh directory turned out to be full of a file that pointed the other way. Same two files, opposite directions, and getting them mixed up produces a setup that looks finished and cannot connect.

One Jenkins task, one Azure task. Schedule a job that copies Apache logs between servers, then build a VM that only accepts key-based SSH.…