AzureVMAgentSSHLauncher: getRemoteSession: Got exception while connecting to remote host ubuntu-jenkinsinfraf4fce1.eastus2.cloudapp.azure.com:22
java.net.UnknownHostException: ubuntu-jenkinsinfraf4fce1.eastus2.cloudapp.azure.com
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:220)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:591)
at java.base/java.net.Socket.connect(Socket.java:540)
at java.base/java.net.Socket.<init>(Socket.java:436)
at java.base/java.net.Socket.<init>(Socket.java:213)
at com.jcraft.jsch.Util$1.run(Util.java:362)
Caused: com.jcraft.jsch.JSchException
at com.jcraft.jsch.Util.createSocket(Util.java:394)
at com.jcraft.jsch.Session.connect(Session.java:215)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.microsoft.azure.vmagent.remote.AzureVMAgentSSHLauncher.getRemoteSession(AzureVMAgentSSHLauncher.java:307)
at com.microsoft.azure.vmagent.remote.AzureVMAgentSSHLauncher.connectToSsh(AzureVMAgentSSHLauncher.java:453)
at com.microsoft.azure.vmagent.remote.AzureVMAgentSSHLauncher.launch(AzureVMAgentSSHLauncher.java:115)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:294)
at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)

Every jobs are now failing because of ssh connection issues, we didn't change anything in our configuration, and it doesn't seem to have any network issues