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Upgrade Trilio Appliance

Generic Pre-requisites

Please ensure to complete the upgrade of all the TVault components on Openstack controller & compute nodes before starting the rolling upgrade of TVM.
The mentioned gemfury repository should be accessible from TVault VM.
Please ensure the following points before starting the upgrade process:
- No snapshot OR restore to be running.
- Global job-scheduler should be disabled.
Take a backup of the conf files on all TVM nodes.

> tar -czvf tvault_backup.tar.gz /etc/tvault /etc/tvault-config /etc/workloadmgr
> cp tvault_backup.tar.gz /root/

Activate the virtual environment on all TVM nodes.

> source /home/stack/myansible/bin/activate

Export new TVault version PYPI url:

> export TVAULT_PYPI=https://pypi.fury.io/triliodata-4-0/

Upgrade s3fuse/tvault-object-store

Run the following command on all TVM nodes to upgrade s3fuse and its dependent packages.
```
> pip install --extra-index-url $TVAULT_PYPI s3fuse --upgrade --no-cache-dir
```

Upgrade tvault-configurator

Run the following command on all TVM nodes to upgrade tvault-configurator and its dependent packages.
```
> pip install --extra-index-url $TVAULT_PYPI tvault-configurator --upgrade --no-cache-dir
```

Upgrade workloadmgr

Run the upgrade command on all TVM nodes to upgrade workloadmgr and its dependent packages (workloadmgrclient, contegoclient, etc)
```
> pip install --extra-index-url $TVAULT_PYPI workloadmgr --upgrade --no-cache-dir
```

Updating Config Parameters of specific services

Update wlm-cron service entries
- If Reconfigure is NOT planned, please perform following steps on all TVM nodes, else skip.
  - Update the following two parameters in wlm-cron.service systemd file (/etc/systemd/system/wlm-cron.service) :
    KillMode=control-group Restart=on-failure
  - And once done, use the following command to reload the service file:
    systemctl daemon-reload
Maria DB changes
- If Reconfigure is planned
  - Remove Galera clustered-flag from all TVM nodes & proceed with reconfigure
    rm -rf /etc/galera_cluster_configured
- If Reconfigure is NOT planned
  - Increase the max SQL connections limit by doing the following steps:
    Edit /etc/my.cnf.d/server.cnf file on each TVM node
    Add the parameter max_connections=5000 under [mysqld] section
    Stop and Start MariaDB service on each node one by one
    systemctl stop mariadb systemctl start mariadb

Post Upgrade Steps

Restore the backed-up config files

> cd /root 
> tar -xzvf tvault_backup.tar.gz -C /

Restart following services on all node(s) using respective commands

systemctl restart wlm-api 
systemctl restart wlm-workloads 
systemctl restart tvault-config
systemctl restart tvault-object-store (Required ONLY if TVault configured with S3 backend storage)

Enable Global Job Scheduler

Restart pcs resources only on the primary node

pcs resource restart wlm-cron
pcs resource restart wlm-scheduler

Verify the status of the services

Note: tvault-object-store will run only if TVault configured with S3 backend storage

On All nodes
systemctl status wlm-api wlm-workloads tvault-config tvault-object-store | grep -E 'Active|loaded'
On primary node
pcs status
systemctl status wlm-cron wlm-scheduler

Additional check for wlm-cron on primary node

ps -ef | grep workloadmgr-cron | grep -v grep
Above command should show only 2 processes running; sample below

[root@tvm6 ~]# ps -ef | grep workloadmgr-cron | grep -v grep
nova      8841     1  2 Jul28 ?        00:40:44 /home/stack/myansible/bin/python3 /home/stack/myansible/bin/workloadmgr-cron --config-file=/etc/workloadmgr/workloadmgr.conf
nova      8898  8841  0 Jul28 ?        00:07:03 /home/stack/myansible/bin/python3 /home/stack/myansible/bin/workloadmgr-cron --config-file=/etc/workloadmgr/workloadmgr.conf

Check the mount point using “df -h” command