Issue

• Cannot install agent due to ssl error

• target machine includes below message in /var/log/messages:

  fatal: Unable to negotiate with 10.202.224.48 port 45748: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1 [preauth]
  

• JBoss ON server.log contains error similar to:

  ERROR [org.jboss.as.ejb3.invocation] (http-0.0.0.0:7080-1) JBAS014134: EJB Invocation failed on component RemoteInstallManagerBean for method public abstract void org.rhq.enterprise.server.install.remote.RemoteInstallManagerRemote.checkSSHConnection(org.rhq.core.domain.auth.Subject,org.rhq.core.domain.install.remote.RemoteAccessInfo) throws org.rhq.core.domain.install.remote.SSHSecurityException: javax.ejb.EJBException: java.lang.RuntimeException: Failed SSH connection
  ...
  Caused by: java.lang.RuntimeException: Failed SSH connection
  ...
  Caused by: com.jcraft.jsch.JSchException: Algorithm negotiation fail
  at com.jcraft.jsch.Session.receive_kexinit(Session.java:583) [jsch-0.1.51.jar:]
  at com.jcraft.jsch.Session.connect(Session.java:320) [jsch-0.1.51.jar:]
  at org.rhq.enterprise.server.install.remote.SSHInstallUtility.connect(SSHInstallUtility.java:216) [rhq-server.jar:4.12.0.JON330GA-redhat-7]
  ... 107 more