QMetry Upgrade Document for RHEL8 & Podman - 3 Tier (v8.15.0)
Steps to upgrade to MySQL v8.0.33 DB Container
Pre-requisites
Ensure that QMetry is not in use and that there are no ongoing operations or traffic on the QMetry.
Steps
Step 1. IMPORTANT: Backup your existing QMetry Database
Take the backup of your existing “qmetry” database. You can replace the username, password, and location of the backup file (currently default /opt).
Syntax: podman exec qmetry_rds_1 sh -c 'exec mysqldump -uroot -p<password> --triggers --routines --hex-blob --single-transaction --lock-tables --no-create-db qmetry' > /opt/qmetry_backup_<date>.sql
For example, podman exec qmetry_rds_1 sh -c 'exec mysqldump -uroot -pqmetry --triggers --routines --hex-blob --single-transaction --lock-tables --no-create-db qmetry' > /opt/qmetry_backup_2021-01-01.sql
Verify that your database has been backed up properly and is available for later use in case of any emergency.
Step 2. Stop the QMetry application.
Go to the QMetry application server and execute the following commands:
systemctl stop qmetryapp
Step 3. Extract QMetryDBUpgrade.zip.
Copy the QMetryDBUpgrade.zip file received from QMetry Support to the server where the QMetry DB container is located. Navigate to the directory where this file is kept and execute the following command.
unzip QMetryDBUpgrade.zip
The following process will create a backup of the data from the MySQL 5.7.28 container. Next, a new container for the database will be set up, running on MySQL v8.0.33. Finally, the backed-up data will be restored into the new MySQL v8.0.33 container.
Step 4. Execute the following commands.
cd QMetryDBUpgrade
sudo su
chmod +x upgradedb.sh
sh upgradedb.sh
Next, the installation process will prompt you with the following questions.
Options | Default Value | Description |
|---|---|---|
Do you have QMetry's application container running on this machine? (Y/N) | Y | Mention “N” for 3-tier. |
Do you have QMetry's database container running on this machine? (Y/N) | Y | Mention “Y” for 3-tier. |
Enter the name of QMetry's database container | qmetry_rds_1 | Enter the QMetry Database container name. |
Enter current Database Host | - | Enter Database Host Public IP/DNS of QMetry application. |
Enter current Database Port | - | Enter Database Port of QMetry application. |
Enter current Database User | - | Enter Database username of QMetry application. |
Enter current Database Password | - | Enter Database password of QMetry application. |
Enter current Database Schema | - | Enter Database schema name of QMetry application. |
Note: This process may take time depending on the amount of data in the database.
Steps to upgrade QMetry to the latest version
Follow the document https://qmetrysupport.atlassian.net/wiki/spaces/QTMSv815/pages/3414829499 to upgrade to the latest version.
Clean up data from MySQL 5.7.28 container
Refer to this section only after performing the steps mentioned in the Steps to upgrade to MySQL v8.0.33 DB Container and Steps to upgrade QMetry to the latest version sections above.
This is an optional step to perform, but we recommend you follow it in order to clean up the residual components and, hence, free up some disk space on the server.
The old QMetry database container and all associated data will be permanently removed once you perform these clean up steps. This action is irreversible.
Before you begin, ensure that the QMetry upgrade is successful, and the data has been fully restored. Once everything has started functioning properly, only then proceed with these steps.
Cleanup Commands:
Execute the following commands on the server where the QMetry DB container is located.
podman rm qmetry_rds_1
podman volume rm $(podman volume ls -qf dangling=true)
podman image prune -af
If you are facing any issues during the upgrade process, kindly generate a support ticket on the Support Portal for assistance.