Adapted the testing instructions from MDL-74072.

Requirements

1. Docker
2. docker-compose
3. The Redis extension for PHP (https://github.com/phpredis/phpredis)

Instructions

1. Download moodle-docker from forked repository that has Redis and Envoy support
2. Follow the instructions in the "Quick start" section, proceeding with Moodle installation as normal, using the relevant Moodle version
3. Add the following to config.php

   $CFG->session_handler_class = '\core\session\redis';

   $CFG->session_redis_host = 'envoy';

   $CFG->session_redis_port = 6379;

   $CFG->session_redis_auth = '';

4. Load the Moodle site in browser
5. Confirm that you don't see an exception (if exception shown, this would mean you are not properly connected to the Envoy service)
6. Remove the MDL-83003 patch
7. Confirm that you see exception when loading Moodle site:

   Failed to connect (try 1 out of 3) to Redis at envoy:6379, the error returned was: unsupported command 'INFO'

8. Remove the additions to config.php
9. Confirm that you don't see an exception

Code verified against automated checks.

Checked MDL-83003 using repository: https://github.com/ziegenberg/moodle

• MOODLE_405_STABLE (0 errors / 0 warnings) [branch: MDL-83003-M405_INFO-command-not-compatible-with-envoy-proxy-redis | CI Job]
• MOODLE_500_STABLE (0 errors / 0 warnings) [branch: MDL-83003-M500_INFO-command-not-compatible-with-envoy-proxy-redis | CI Job]
• main (0 errors / 0 warnings) [branch: MDL-83003_INFO-command-not-compatible-with-envoy-proxy-redis | CI Job]

_{More information about this report}

Built on: Fri May 30 12:32:50 UTC 2025

Launching automatic jobs for branch MDL-83003-M405_INFO-command-not-compatible-with-envoy-proxy-redis

• https://ci.moodle.org/view/Testing/job/DEV.02%20-%20Developer-requested%20PHPUnit/19595/ PHPUnit (sqlsrv / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67001/ Behat (NonJS - boost and classic / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67002/ Behat (Firefox - boost / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67003/ Behat (Firefox - classic / complete)

Launching automatic jobs for branch MDL-83003-M500_INFO-command-not-compatible-with-envoy-proxy-redis

• https://ci.moodle.org/view/Testing/job/DEV.02%20-%20Developer-requested%20PHPUnit/19596/ PHPUnit (sqlsrv / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67004/ Behat (NonJS - boost and classic / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67005/ Behat (Firefox - boost / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67006/ Behat (Firefox - classic / complete)

Launching automatic jobs for branch MDL-83003_INFO-command-not-compatible-with-envoy-proxy-redis

• https://ci.moodle.org/view/Testing/job/DEV.02%20-%20Developer-requested%20PHPUnit/19597/ PHPUnit (sqlsrv / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67007/ Behat (NonJS - boost and classic / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67008/ Behat (Firefox - boost / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67009/ Behat (Firefox - classic / complete)
• https://ci.moodle.org/view/Testing/job/DEV.01%20-%20Developer-requested%20Behat/67010/ App tests (stable app version) / complete)

Built on: Wed Jun 4 14:05:49 UTC 2025