Simplify the Use of ENV Variables in Percona Monitoring and Management AMI
source link: https://www.percona.com/blog/simplify-use-of-env-variables-in-percona-monitoring-and-management-ami/
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Simplify the Use of ENV Variables in Percona Monitoring and Management AMI
February 1, 2024
The Percona Monitoring and Management (PMM) Amazon Machine Image (AMI) currently lacks native support for ENV variables. In this guide, we’ll walk through a straightforward workaround that simplifies the process of using ENV variables in PMM AMI and reapplying them after an upgrade.
Step one: Adding ENV variables to /srv/.env
Begin by consolidating your ENV variables in the /srv/.env file. Edit the file and add your variables, like so:
PMM_DEBUG=1 DATA_RETENTION=2160h |
Step two: Using systemctl edit for systemd service
To avoid directly modifying the /usr/lib/systemd/system/supervisord.service file, which could be overwritten during system upgrades, leverage systemctl edit for a more sustainable approach. Open a terminal and run:
sudo systemctl edit supervisord.service |
[Service] EnvironmentFile=/srv/.env |
Step three: Restarting the supervisord service
After applying the changes, restart the supervisord service:
sudo systemctl daemon-reload sudo systemctl restart supervisord |
While PMM currently rewrites /usr/lib/systemd/system/supervisord.service on each upgrade, the modifications made using systemctl edit remain safeguarded.
By adopting the systemctl edit approach, your ENV variable setup remains intact, offering a cleaner and more maintainable configuration for your PMM AMI.
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