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What are the advantages of each option? What are the disadvantages? Is there a best practice in this? I fail to see any critical differences between them.
In my current place of employment we use nodes exclusively, however they are all in our internal network.
I have a task that needs to be delegated to an external server. It does not need access to our GIT. Essentially, it will upload data to a file server, and does not need to access our servers, network, data, etc.
If I need to build, run checks, tests, ... I use a node.
If I want to open a connection to a server to deliver the built code to production for example, I use the sshCommand step from SSH Step plugin. When the code is delivered the ssh connection is closed.
Having a node always connected to your jenkins can be unpleasant. Let's say the server you connect to belongs to a partner and he wants to audit the times you connect to put the files on the server. In that case he cannot say. Having a node always connected also means you need to maintain the connection, imagine the server is configured to disconnect you after a while or the server reboots and the connection is not relaunched.
