In the late 2000s, I worked at $MAJOR_TELCO where management steadfastly refused to implement version control. Upgrades in production were executed by individually SSHing into each physical machine in the prod cluster and typing in commands by hand.
My attempt to introduce a "multissh" tool that automatically executed the same commands in each node at once was regarded with the highest suspicion and shot down. Shortly after I left, they had a multi-week outage caused by somebody fat-fingering the permissions on a network interface.
My attempt to introduce a "multissh" tool that automatically executed the same commands in each node at once was regarded with the highest suspicion and shot down. Shortly after I left, they had a multi-week outage caused by somebody fat-fingering the permissions on a network interface.