Symptoms

The avagent failed to unregister and register again during the upgrade procedure. Issue: An Upgrade fails with Register Replicator (x of x). Error: Registration error: MCS returned error code 110, '* 110 * Re-registration of account /MC_SYSTEM/FQDN is not permitted'

Cause

From the avagent.log, the cid.bin file is incorrect or missing before the upgrade procedure, but the Management Console Server (MCS) still has the full client information. This causes the registration failure during the upgrade procedure. Review the logs to confirm: /usr/local/avamar/var/client/avagent.log: 2020-04-24 14:11:07 avagent Info <5705>: Updating IP address with the MCS. local IP='10..xx.xx', registered IP='(none)', port changed:false 2020-04-24 14:11:07 avagent Info <43701>: agent_message::resolve_client_ip ping to MCS : using local IP:(none) failed, char_to_sockaddr() Unable to resolve hostname (Check your DNS setting and server) /data01/avamar/repo/temp/<Package_Name>/tmp/workflow.log: 2020-04-24 11:11:20 (-0400) 4107124 INFO: >>> [make_temp_script] 111 whoami=root as_user=root, ssh_key_to_load= 2020-04-24 11:11:20 (-0400) 4107124 INFO: >>> [make_temp_script] 222 very_current_user=root, as_user=root, ssh command is: ssh-add /root/.ssh/rootid && (service avagent register HOSTNAME /MC_SYSTEM) >/usr/local/avamar/var/run_command-sysout.25026.4107124 2>&1 2020-04-24 11:11:21 (-0400) 4107124 INFO: - - - - - - - BEGIN(output) - - - - - - - 2020-04-24 11:11:21 (-0400) 4107124 INFO: avagent Info: Client Agent not running. 2020-04-24 11:11:21 (-0400) 4107124 INFO: avagent Info <5008>: Logging to /usr/local/avamar/var/client/avagent.log 2020-04-24 11:11:21 (-0400) 4107124 INFO: avagent Error <7531>: Unable to register /MC_SYSTEM/hostname with Administrator HOSTNAME:28001 2020-04-24 11:11:21 (-0400) 4107124 INFO: '* 110 * Re-registration of account /MC_SYSTEM/FQDN is not permitted' (110) Registration from CLI fails or even selecting "Call support, issue resolved" fails with the error below: 020-04-24 14:23:26 avagent Info <5472>: Registering with the MCS (hostname) 2020-04-24 14:23:26 avagent Error <5320>: Received from MCS#110:* 110 * Re-registration of account /MC_SYSTEM/FQDN is not permitted 2020-04-24 14:23:26 avagent Error <6210>: Unable to register 'hostname' with MCS at hostname:28001 2020-04-24 14:23:26 avagent Error <6163>: Registration error: MCS returned error code 110, '* 110 * Re-registration of account /MC_SYSTEM/FQDN is not permitted' 2020-04-24 14:23:26 avagent Info <5321>: Unable to connect to Management Console (hostname), sleep 17 minutes, 14 seconds before retry Verify if the CID is present: ls -lrth /usr/local/avamar/var/client/ | grep cid.bin If present, verify if the CID matches the Avamar client under /MC_SYSTEM using the following commands: cat cid.bin avmgr resf --acnt=ref{cid} --->cid from cat.bin command avmgr getl --path=/MC_SYSTEM Verify that both outputs have the correct hostname and CID in the proper location. 

Resolution

Use GOAV to fix this issue automatically. 1. Download and Install the Goav tool: (See Avamar: GoAV Product Tool for Management and Troubleshooting for information about how to do this) 2. Use the following command to fix the MC_SYSTEM client: ./goav replication mc-system Create a Service Request if assistance is required, referencing this article.

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