EEM stopped talking to LDAP

Document ID : KB000107066
Last Modified Date : 19/07/2018
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The EEM server was working fine with two nodes. After adding the third node the first two nodes fail to bind to LDAP.
EEM  Release: 12.6
EEM HA with three nodes
While troubleshooting we found that the dxserver could not be started on the primary server.

The itechpoz_trace.log on the primary had the following error.

* [1] 20180717.093219.452 DSA_I2690 Multiwrite-DISP: Peer 'itechpoz-SECONDARY-SERVER' updated
* [64] 20180717.093320.505 DSA_E2735 Multiwrite-DISP: Unable to synchronize with peer 'itechpoz-THIRD-SERVER'
The primary server was not able to communicate with the THIRD server.
The server was using /etc/resolve.conf  for ip resolution and it was blank.After updating the file manually and Restarting dxserver and now the EEM HA is working fine.