Clmigcheck utility rshexec cannot connect to node NODE1

ERROR: Internode communication failed, check the clcomd.log file for more information.

ERROR: Internode communication failed, check the clcomd.log file for more information.

* Normally this kind of error we are facing at the time PowerHA systemMirror migration Prerequisites.

* PowerHA systemMirror clmigcheck utility deducting this kind of errors.

* If suppose we are not resolving this issue, we will not able to perform PowerHA SystemMirror 6.1 to 7.1 Rolling or Snapshot migration.

* We can identify clmigcheck detailed output on /tmp/clmigcheck/clmigcheck.log

Error Message:

NODE2:# clmigcheck
Saving the existing log, "/tmp/clmigcheck/clmigcheck.log", to
"/tmp/clmigcheck/clmigcheck.log.20160324_1942".
#
## One or more possible problems have been detected:
#
rshexec: cannot connect to node NODE1
#
ERROR: Internode communication failed,
       check the clcomd.log file for more information. 

Problem Identification:

* Actually Problem is related to HACMP servicess

* We needs no restart some servicesss then it will work.

Solution for the Problem:

* Put the notes entry on /etc/cluster/rhost file on all the nodes.

NODE1+NODE2:# cat /etc/cluster/rhosts
NODE1
NODE2 

* Restart cluster related services as per below mentioned.

NODE1+NODE2:# lssrc -ls clcomdES
NODE1+NODE2:# stopsrc -s clcomdES
NODE1+NODE2:# startsrc -s clcomdES
NODE1+NODE2:# /usr/sbin/snmpv3_ssw -1
NODE1+NODE2:# lssrc -ls snmpd
NODE1+NODE2:# startsrc -s snmpd 
NODE1+NODE2:# refresh -s clcomd 

* Run again clmigcheck utility it should be work.

NODE2:# clmigcheck

* If there is no error on your HA configuration prerequisites. You will be get below mentioned output.

NODE2:# clmigcheck
------------[ PowerHA SystemMirror Migration Check ]----
Please select one of the following options:
        1 ->  Enter the version you are migrating to.
        2 ->  Check ODM configuration.
        3 ->  Check snapshot configuration.
        4 ->  Enter repository disk and IP addresses.
Select one of the above, "x" to exit, or "h" for help: 

Result:

* clmigcheck utility rshexec cannot connect to node NODE1 problem has been resolved.

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2 Thoughts to “Clmigcheck utility rshexec cannot connect to node NODE1”

  1. Namas

    NODE1:# clmigcheck

    Please select one of the following options:

    1 -> Enter the version you are migrating to.

    2 -> Check ODM configuration.

    3 -> Check snapshot configuration.

    4 -> Enter repository disk and IP addresses.

    Select one of the above, “x” to exit, or “h” for help: 4

    Verifying clcomd communication. Please be patient.

    ##
    ## One or more possible problems have been detected:
    ##

    ERROR: COMM-ERROR: Unable to verify inbound clcomd communication to node: NODE2

    NODE1+NODE2:# lssrc -ls clcomdES
    NODE1+NODE2:# stopsrc -s clcomdES
    NODE1+NODE2:# startsrc -s clcomdES
    NODE1+NODE2:# /usr/sbin/snmpv3_ssw -1
    NODE1+NODE2:# lssrc -ls snmpd
    NODE1+NODE2:# startsrc -s snmpd
    NODE1+NODE2:# refresh -s clcomd

  2. Admin

    Error :
    ERROR: COMM-ERROR: Unable to verify inbound clcomd communication to node: NODE2

    Solution:
    NODE1+NODE2:# lssrc -ls clcomdES
    NODE1+NODE2:# stopsrc -s clcomdES
    NODE1+NODE2:# startsrc -s clcomdES
    NODE1+NODE2:# /usr/sbin/snmpv3_ssw -1
    NODE1+NODE2:# lssrc -ls snmpd

    NODE1+NODE2:# startsrc -s snmpd
    NODE1+NODE2:# refresh -s clcomd

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