Part IV
Controlling Many Machines

Author Note

Setting up Master/Minion. We switch to ‘control’ because now we’re stepping into a ‘live’ environment.

Doing away with SSH infrastructure.

Proxy minions.

Access control.

Monitoring; beacons, reactor.

‘self-healing’ infrastructure. Increased security.

Multi-master setup.

salt-ssh is useful for directly distributing your multi-server configuration over your SSH infrastructure. Now now we move on to Salt’s Master/Minion facility, this allows distribution of a configuration across multiple machines without an SSH infrastructure. It also allows much more; monitoring of your infrastructure combined with reacting to event in your infrastructure allows you to create self-healing systems.