How can I configure the JON Agent when NAT is required to reach the Agent's host machine
Issue
- JON server can communicate with the agent via the NAT address only.
- If I use the NAT address as the agent's bind address the agent cannot bind to the assigned address:
The setup has been completed for the preferences at node [/rhq-agent/default]. Failed to start the agent java.net.BindException: Cannot assign requested address at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:365) at java.net.ServerSocket.bind(ServerSocket.java:319) at java.net.ServerSocket.<init>(ServerSocket.java:185) at javax.net.DefaultServerSocketFactory.createServerSocket(ServerSocketFactory.java:170) at org.jboss.remoting.transport.socket.SocketServerInvoker.createServerSocket(SocketServerInvoker.java:264) at org.jboss.remoting.transport.socket.SocketServerInvoker.start(SocketServerInvoker.java:193) at org.jboss.remoting.transport.Connector.start(Connector.java:324) at org.rhq.enterprise.communications.ServiceContainer.setupServerConnector(ServiceContainer.java:1226) at org.rhq.enterprise.communications.ServiceContainer.start(ServiceContainer.java:550) at org.rhq.enterprise.communications.ServiceContainer.start(ServiceContainer.java:468) at org.rhq.enterprise.agent.AgentMain.startCommServices(AgentMain.java:2148) at org.rhq.enterprise.agent.AgentMain.start(AgentMain.java:636) at org.rhq.enterprise.agent.AgentMain.main(AgentMain.java:413) Agent will be restarted soon to see if the failure condition cleared up - If I use the physical address as the agent's bind address the agent fails to register with the JON server:
ERROR [RHQ Agent Registration Thread] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.agent-registration-rejected}The server has rejected the agent registration request. Cause: [org.rhq.core.clientapi.server.core.AgentRegistrationException:Server cannot ping the agent's endpoint. The agent's endpoint is probably invalid or there is a firewall preventing the server from connecting to the agent. Endpoint: socket://192.168.1.10:16163/?rhq.communications.connector.rhqtype=agent&numAcceptThreads=1&maxPoolSize=303&clientMaxPoolSize=304&socketTimeout=60000&enableTcpNoDelay=true&backlog=200] ERROR [RHQ Agent Registration Thread] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.agent-registration-retry}Will retry the agent registration request soon... - Agent's physical address is private and not reachable from the JON server and is only reachable via a NAT address.
Environment
- JBoss Operations Network (JON) 2.3, 2.3.1, 2.4, 3.0, 3.1, 3.2, 3.3
- Host machine for JON Agent is only reachable through Network Address Translation (NAT) (Public Address to Private Physical Address)
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