On 1/25/21 1:23 PM, Jigar R wrote:
Hello Jenkins community,
I have created jenkins (v2.249.1) agent with launch method "Lauch
agent by connecting it to the master". This prints a command on
Jenkins UI i.e. "java -jar agent.jar -jnlpUrl .... -secret ....". Does
this method use java web start / JNLP4? Is it going away?
I meant to send the following explanation to the list a few weeks back
but apparently it didn't work out that way.
On 12/31/20 9:32 AM, jiga...@gmail.com wrote:
I have been running on JNLP for a while. Is it going to be deprecated?
Should I prepare to move to SSH?
Unfortunately, that's a more confusing question than it should be. There
are three things related to Jenkins agents that are named "JNLP". Only
one of them actually has anything to do with JNLP.
First, the one that actually has anything to do with JNLP. If you use
the "Launch" button on the controller to start your agent, that uses
Java WebStart and JNLP is the launch protocol / mechanism. WebStart is
going away. Or not. It has been removed from later versions of Java.
Though, the OpenWebStart project has reimplemented these capabilities,
which you could add onto later Java installations. However, I don't
recommend using WebStart in production. It has no restart capabilities.
It has become increasingly difficult to get it to work on current
operating systems, etc.
Second, the one in Jenkins that has been renamed. When you configure an
agent in Jenkins, there used to be an option to have a JNLP agent. This
was renamed to "Inbound TCP agent" a while back as it has nothing to do
with JNLP. This one is not going away.
Third, the one(s) in Jenkins that are still misnamed. Jenkins Remoting
has had a series of network protocols named "JNLP". Currently, the only
available one is "JNLP4-connect". This name is incorrect, as it has
nothing to do with JNLP. The misleading name is retained for backwards
compatibility purposes. The earlier versions of these protocols had a
variety of problems and have gone away. The current one is not going away.
Jeff Thompson
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