By dafellas
What do server administrators use to send commands to multiple servers? I know what I’m describing has to exist, right?
For example, say I have 2 Ubuntu servers and they run on the same image, same users, groups, and everything. Only thing that is different is what websites I have setup under /var/www. I want to run “sudo apt-get update” and “sudo apt-get upgrade” on both of these servers. It would be awesome to have other options available too such as other commands, a system that is aware of the others too in my network.
Also, this would relate to having a load balancer, multiple servers of the same exact content. I would want them to all have the same commands executed on them at the same time.
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There are quite a few options out there to handle administering multiple servers. I’d suggest browsing some the tutorials under the “Configuration Management” tag. Configuration management is the term that gets used for a broad set of software that can be used to deploy servers, keep environments in in-sync across multiple servers, and other so-called “devops” tasks. Puppet, Chef, and Ansible are some of the big players in this space. Depending on your needs, some of those solutions might be a bit of overkill. I’m personally partial to using Fabric for small simple tasks like running the same command on a handful of servers.
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