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Summary

This document will highlight some key aspects of the upgrade process of the current Opmantek Applications.

Upgrading NMIS 9 compatible applications

Upgrade requirements

In order to be able to upgrade please ensure the following product versions are installed on your system.


ApplicationVersion
NMIS 99.1.0G or earlier version
opCharts 44.1.3 or earlier version
opConfig 4 4.1.1 or earlier version
opEvents 33.1.0 or earlier version
opHA 33.1.2 or earlier version
opReports 4 4.1.1 or earlier version


Check compatibility with other OMK apps


Has a dependency changed

  • Review the application release notes for specific requirements, deprecated dependencies or new dependencies. For example: Newer MongoDB version


Test in a non production system

  • Prior to upgrade, it is recommended to test the upgrade in a test environment that matches you current setup on production.
  • Create a test environment


Have you got custom modifications or template changes

  • Review any custom modification applied to you applications and consider that they may not work after upgrade and they may need adjustments.


Have you got a test plan and steps to perform a rollback in your production environment

  • It is recommended to have a plan of action in case the upgrade process doesn't work as expected.


Recommendation

As always, we strongly recommend to keep a backup of the current installation. This is a recommended practice and it's an important step on any software installation or upgrade.

Verify a successful upgrade

  • Load the applications and verify the basic operations firsts as login, load process and data displayed. 
  • Review the specific application log for errors (opEvents.log, opCharts.log, etc)
  • The installer saves a log of all actions taken, files copied etc. in the installation directory as install.log, ie. normally it'll be in /usr/local/omk/install.log. Subsequent upgrades or installations of other Opmantek products will add to that logfile, so you may very well want to remove or clear the install.log file before upgrading or adding extra software.

Restoring from backup


How to restore from a failed upgrade

All opModule installers create a backup of /usr/local/omk prior to the installer running PROVIDED you answered the following question early in the installation procedure in the affirmative:

  • Do you want to perform a backup of your installation directory?
    • Default answer for automated install is 'Yes'.


This is the process to use if you need to roll back from the installer using this backup:

# send email to optek@ompantek.com with advance warning before restoring from backup
 service opeventsd stop
service opconfigd stop
service opchartsd stop
service omkd stop
 
# confirm that the required Opmantek services have stopped
/usr/local/omk/bin/checkomkdaemons.sh status
 
cd ~
mkdir temp
tar -xvf omk-backup-YYYY-MM-DD.tgz -C ~/temp
unalias cp
cp -R ~/temp/* /usr/local/omk
 
# at this point this error may occur:
#   cp: cannot create regular file '/usr/local/omk/bin/opchartsd.exe': Text file busy
#   cp: cannot create regular file '/usr/local/omk/bin/opflowd.exe': Text file busy
# if this happens: do
#       mv /usr/local/omk/bin/opchartsd.exe /usr/local/omk/bin/opchartsd.exe.old
#       mv /usr/local/omk/bin/opflowd.exe /usr/local/omk/bin/opflowd.exe.old
# and then: do
# cp -R ~/temp/* /usr/local/omk

IMPORTANT STEP:

You also need to run the installer for each previously application that was installed in order to downgrade properly and have the initd and systemd services restored too.

 service opeventsd start
service opconfigd start
service opchartsd start
service omkd start
 

Ref: Restore Backup after Install

A couple things to remember -

  1. Each run of an opModule installer creates a new backup file. However, since they all use the same name only the most recent will be maintained. If you are installing several packages you should rename each backup before running the next.
  2. This process overlays the backup into the /usr/local/omk directory and DOES NOT replace it.

Licences

There is no need to request a license update, as the licenses are continuing to be valid with this upgrade.


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