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Agent went offline while building a ssh task

Edited

The agent went offline while building. In the JOB,I use a "SSH Task" to connect to my vm from agent. During the ssh task, agent went offline.

the log of agent:

2020-08-19 22:45:52,712 WARN [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [AtlassianSshClient$AtlassianDefaultSshConfig] Illegal key size
2020-08-19 22:45:52,712 WARN [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [AtlassianSshClient$AtlassianDefaultSshConfig] Illegal key size
2020-08-19 22:45:52,724 WARN [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [AtlassianSshClient$AtlassianDefaultSshConfig] Illegal key size or default parameters
2020-08-19 22:45:52,724 WARN [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [AtlassianSshClient$AtlassianDefaultSshConfig] Disabling high-strength ciphers: cipher strengths apparently limited by JCE policy
2020-08-19 22:45:52,725 INFO [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [TransportImpl] Client identity string: SSH-2.0-SSHJ_0.27.0
2020-08-19 22:45:52,764 INFO [0-BAM::nancafe2-bamboo-6::Agent:pool-3-thread-1] [TransportImpl] Server identity string: SSH-2.0-OpenSSH_7.4
2020-08-19 23:00:04,933 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:00:04,999 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:00:08,600 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:00:21,609 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:06:04,170 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:37:02,684 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-19 23:57:33,759 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:00:00,975 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:00:00,997 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:00:01,016 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:03:02,190 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: invalidate executors: AllAgentsUpdatedEvent, agents known to be affected: []
2020-08-20 00:03:05,240 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:05:18,678 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: invalidate executors: AllAgentsUpdatedEvent, agents known to be affected: []
2020-08-20 00:18:05,041 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: []
2020-08-20 00:24:37,570 INFO [AgentRunnerThread] [RemoteAgent] Starting Bamboo Remote Agent...
2020-08-20 00:24:37,570 INFO [AgentRunnerThread] [RemoteAgent] Starting application context...
2020-08-20 00:24:37,633 INFO [AgentRunnerThread] [RemoteAgent$1] Refreshing com.atlassian.bamboo.v2.build.agent.remote.RemoteAgent$1@3a0e4f40: startup date [Thu Aug 20 00:24:37 CST 2020]; root of context hierarchy
#another level of log 

INFO | jvm 7 | 2020/08/20 00:18:05 | 2020-08-20 00:18:05,041 INFO [remoteEventRebroadcasterMessageListenerContainer-1] [RemoteEventRebroadcasterMessageListener] ExecutableQueueUpdate: addToQueue, agents known to be affected: [] ERROR | wrapper | 2020/08/20 00:24:12 | JVM appears hung: Timed out waiting for signal from JVM. ERROR | wrapper | 2020/08/20 00:24:12 | JVM did not exit on request, terminated STATUS | wrapper | 2020/08/20 00:24:12 | JVM exited in response to signal SIGKILL (9). INFO | wrapper | 2020/08/20 00:24:12 | JVM exited on its own while waiting to kill the application. STATUS | wrapper | 2020/08/20 00:24:17 | Launching a JVM... INFO | jvm 8 | 2020/08/20 00:24:18 | Wrapper (Version 3.2.3-atlassian-1) http://wrapper.tanukisoftware.orgINFO | jvm 8 | 2020/08/20 00:24:18 | Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved. INFO | jvm 8 | 2020/08/20 00:24:18 | INFO | jvm 8 | 2020/08/20 00:24:18 | 2020-08-20 00:24:18,346 INFO [WrapperSimpleAppMain] [AgentBootstrap] Starting Agent Bootstrap using Java 1.8.0_91 from Oracle Corporation. Default charset: UTF-8, file name encoding: UTF-8

how to resolve it? or how to dig it?

1 answer

Hi @Clara Yuan ,

There might be quite a number of underlying root causes. But you can start by checking the connection between agent and the server. Try below commands on the agent.

telnet bamboo_baseURL 8085
telnet bamboo_baseURL 54663

 You can see further troubleshooting checks in below

https://confluence.atlassian.com/bamkb/troubleshooting-remote-agent-216957427.html

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