Resolving a server SSH connection issue in an LDAP environment

In an LDAP environment, an account user or an account administrator cannot log in to a server by SSH. The server is part of a cluster that belongs to the account that the account user or account administrator is assigned to.

Symptoms

The SSH connection cannot access the LDAP server.

Causes

The server cannot be routed to the LDAP server.

Diagnosing the problem

From the command line, log in to the server as root and run a traceroute to the LDAP server, or ping the LDAP server. The LDAP server does not respond.

Resolving the problem

System administrator response:

1. Log in to the management node with root access.
2. Check the iptables settings to ensure that the firewall is shut down.
3. Start the iptables server on the management node:
   On RHEL:

   # service iptables start

   On SLES:

   # SuSEfirewall2 start