How to create a filesystem in hacmp cluster in aix?

How to create a filesystem in hacmp cluster in aix?

1. Ground work:

#lslpp -l|grep -i cluster.es.server.rte     --> To check the current version of the cluster

#clRGinfo                            --> Check if the RG is online status.

#cllsvg               --> check the cluster volume group names

#lsvg -o              --> check the active volume group.

#lsvg <volume group>    --> To check the free space of the VG where you create FS.

#lsrsrc -ls clstrmgrES     --> To check the cluster is stable on both nodes.

2. Implementation steps

#smitty hacmp

     system management (c-spoc)

         HACMP logical volume management

             shared filesystem

                Enhance journal file systems

                  Add an Enhanced journal file systems

                     (Select the VG where we need to create a filesystem)

                        (update the name of the FS (like abcdFS) and size of theFS)

                                    Press Enter

Note: The filesystem get mounted once it gets created

#lsvg -l <volume group>      --> Check and confirm the filesystem created

The filesystem will be added by hacmp on the secondary node

Check the directory on the secondary node:  #ls -ld /abcdFS

3. Validation

#df -gt /abcdFS    --> To confirm the version has been upgraded.

How to upgrade HACMP version in aix?

How to upgrade HACMP - Cluster version in aix?

1. Ground work:

#lslpp -l|grep -i cluster.es.server.rte     --> To check the current version of the cluster

#./clRGinfo                            --> Check if the RG is online status.

#lssrc -ls clstrmgrES               --> check if the cluster manager is stable on both nodes

#smitty hacmp ->

    Extended configuration

      snapshot configuration

        Create a snapshot of the cluster configuration  (Mandatory -snap name and description)

             output: .info and .odm file created (Required this for restoration)

#/var/hacmp/clverify/clverify.log   --> check clverify has no errors

#emgr -l                                          --> Check if the emergency fixes there on the server

#emgr -rL                                          --> To remove the emergency fix.

Check Download the hacmp upgrade filesets from fixcentral and save it in rootvg directory.

2. Implementation steps

Stop the cluster services on both the nodes.

#lssrc -ls clstrmgrES                    --> check if the cluster manager is st_stable on both nodes

#smitty hacmp

     system management (c-spoc)

         manage hacmp services

             stop cluster services  (now, select node/noes and bring resource groups offline)

#lssrc -ls clstrmgrES                    --> Now the cluster manager demon should be ST_INIT

#lslpp -l|grep -i cluster.es.server.rte   --> To check the current version of hacmp

#cd <package_located directory>

#smitty update_all        -- > Do the preview first and commit next, once done follow below

#lslpp -l|grep -i cluster.es.server.rte    --> To confirm the version has been upgraded.

Reboot the node and perform the upgrade on the other node.

#smitty hacmp

     system management (c-spoc)

         manage hacmp services

             start cluster services  (now, select node/node names, automatically)

#/tmp/hacmp.out                      --> To check any error and warnings

3. Validation

#lslpp -l|grep -i cluster.es.server.rte    --> To confirm the version has been upgraded.

#lppchk –v                                           --> No output should displayed, only the prompt

#./clRGinfo                                         --> To check the RG is online as before.

#lssrc -ls clstrmgrES                            --> To check if the cluster manager is stable (ST_Stable)

How to capture the screen into the file in aix?

How to capture the screen into the file in aix?

Being as a system admin, whenever you are doing the task, you copy the screen and paste it on your notepad for your future reference.  Instead of notepad, you can save it on the server itself using the "script" command

#script

The output file name is "typescript"

so whatever you type on the screen is copied into typescript file.

To stop this script command, press ctrl+D and press enter

Now you check the file, you can see the output of your screen.

How to stop and start the error demon in aix?

How to stop and start the error demon in aix?

To stop the error demon:  #/usr/lib/errstop

To start the error demon: # /usr/lib/errdemon

For checking the errlog, we need to initiate the test logger

#errlogger "test"

#errpt   ---> you can see the test logger on the errpt

If the errpt corrupted, please follow the below.

 Delete the error log file   #rm /var/adm/ras/errlog

Stop the error demon:      # /usr/lib/errstop

Start the error demon:      #/usr/lib/errdemon   (When starting the errdemon, it will automatically creates the errlog files.

How to troubleshoot disk related issues in aix?

How to troubleshoot disk related issues in aix?

If the disk is local disk, then please execute the below commands to troubleshoot the issue.

Commands	Explanation
# lspv	To list the disk details
# lsvg -p <vg_name>	To check the vg whether it is in missing state
# varyonvg <vg_name>	To bring disk from missing to active
# errpt	To check the error details
# errpt -N hdiskX	To check the error details for the particular disk.
# errpt -aj <identifier>	To check the detailed error output of disk
# lquerypv -h /dev/hdiskX	The output should not be all zero

if the issues found, then log a case with IBM and replace the disk.

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If the disk is virtual which is provided by VIOS , then please execute the below commands to troubleshoot the issue.

Commands	Explanation
# lspv	To list the disk details
# lsdev -Cc disk	To check whether the disk is local,virtual
# errpt	To check the error details
# errpt -N hdiskX	To check the error details for the particular disk.
# lspath	To check paths that is is single/dual path
# lscfg -vpl hdiskX	To get the C# of the disk (example: C110)
Execute below cmd on VIO
# lsdev -slots|grep -i CXX	To identify the vhost details corresponding to the disk on the lpar
# lsmap -all|grep -p vhostX	To get the disk details corresponding to the disk on the lpar
# errpt	To check the error details (execute on aix prompt)
# errpt -N hdiskX	To check error details for particular disk.(execute on aix prompt)
# errpt -aj <identifier>	To check the detailed error output of disk. (execute on aix prompt)

if the issues found, then log a case with IBM and replace the disk.

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If the disk is provided by any other storage,  then please execute the below commands to troubleshoot the issue.

Commands	Explanation
# lsdev -Cc	To check the disk is local/virtual/storage
# lsdev -Cl hdiskX -F parent	To identify the parent of the hard disk
# lsdev -Cl fscsiX -F parent	To identify the fcs details.
# fcstat fcsX	To check the FC card details
# fcstat fcsX|awk '/Transmit/,/Words/'	if the data transfer and send is not changing  -then we have connectivity problem

if everything seems to be normal up on fcs, the problem should be on the storage side.. pass it to storage team.

How to troubleshoot network related issues?

How to troubleshoot network related issues?

The below commands are very useful when you troubleshoot any network related issues.

Commands	Explanation
# errpt	To Check the errpt error
# errpt|more	To check the error
# errpt -aj <identifier>	To Check the detailed error
# lsdev -Cc adapter	To Check the adapter device details
# entstat ethX	To check the ethernet statistics
# netstat -v	To check the detailed output of ethernet card
# netstat -v|grep -E "ETHERNET|Adapter|Errors|State"	To check the errors with detailed output
# netstat -v|grep -E "ETHERNET|Adapter|State"	To check the detailed output
# netstat -v|grep -E "ETHERNET|Device|State"	To check the link status and state.