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Just to add to this the main problem in my case is CPU load. A single n8n process can only effectively use one CPU core for execution work. So even if the server has more CPU cores available, one busy n8n process can still become the bottleneck. Queue Mode helps here because the execution work can be moved to multiple worker processes, allowing the workload to be distributed across CPU cores.

@teiluj thanks for the great report. I have fixed this now. Unfortunately, it's a series of changes, so cannot be applied easily. Fix will be part of next Cloudron release.

@beardmancer you can also check via https://mail-tester.com/

@james said: Hello @jdaviescoates The ooc tool is called this way https://docs.cloudron.io/packages/nextcloud#running-occ-tool sudo -u www-data php -f /app/code/occ $COMMAND Thanks, that worked.

great, working. Thank you

Hello @crush33 @Crush33 said: but the folder generated are root-owned What folder exactly? Can you give more details so we can reproduce this faster?

Hello @ext-owl Since you have deleted your post content, I am marking this topic as solved. I can also delete this topic completely if you intended to do that anyway.

Hello @teiluj Since you are using the Koel iOS app, can you maybe check if the issue is the same when using Keol from e.g.: a Chrome or Firefox browser on your iOS device? This could narrow it down to a general iOS or iOS app issue.

Hello @philkunz I can't tell what is accessing your MySQL Service, but if you use Cloudron in the default and not something out of the ordinary, it should be some app. To get details about the hosts and connection errors, ssh into your Cloudron server, then run: docker exec -it mysql bash -c 'mysql --user=root --password=$CLOUDRON_MYSQL_ROOT_PASSWORD --execute="SELECT * FROM performance_schema.host_cache"' This will show all. If you want to filter for the connection error specifically, run: docker exec -it mysql bash -c 'mysql --user=root --password=$CLOUDRON_MYSQL_ROOT_PASSWORD --execute="SELECT HOST, SUM_CONNECT_ERRORS FROM performance_schema.host_cache WHERE SUM_CONNECT_ERRORS > 0;"' it will create an output like: mysql: [Warning] Using a password on the command line interface can be insecure. +-----------------+--------------------+ | HOST | SUM_CONNECT_ERRORS | +-----------------+--------------------+ | my-cloudron-dev | 1 | +-----------------+--------------------+ You can also filter for the amount of auth errors with something like this: docker exec mysql bash -c 'mysql --user=root --password=$CLOUDRON_MYSQL_ROOT_PASSWORD --execute="SELECT HOST, IP, SUM_CONNECT_ERRORS, COUNT_AUTHENTICATION_ERRORS FROM performance_schema.host_cache \G;"' Which will return something like this: *************************** 1. row *************************** HOST: my-cloudron-dev IP: fd00:c107:d509::1 SUM_CONNECT_ERRORS: 0 COUNT_AUTHENTICATION_ERRORS: 40 *************************** 2. row *************************** HOST: mysql IP: fd00:c107:d509::5 SUM_CONNECT_ERRORS: 0 COUNT_AUTHENTICATION_ERRORS: 17 *************************** 3. row *************************** HOST: mysql IP: 172.18.30.1 SUM_CONNECT_ERRORS: 0 COUNT_AUTHENTICATION_ERRORS: 1 *************************** 4. row *************************** HOST: my-cloudron-dev IP: 172.18.0.1 SUM_CONNECT_ERRORS: 1 COUNT_AUTHENTICATION_ERRORS: 2 There you can see I intentionally failed to connect many times from inside a Cloudron app by running: for i in {1..20}; do mysql --user=${CLOUDRON_MYSQL_USERNAME} --password=WRONGPASSWORD --host=${CLOUDRON_MYSQL_HOST} ${CLOUDRON_MYSQL_DATABASE}; done When running this again from inside a Cloudron app, I can run the above MySQL query again and can see: *************************** 1. row *************************** HOST: my-cloudron-dev IP: fd00:c107:d509::1 SUM_CONNECT_ERRORS: 0 COUNT_AUTHENTICATION_ERRORS: 60 Is now 60 and was before 40. If this value keeps rising, without you doing anything manually. There is some app that is failing to connect to the MySQL service for some reason. My first suspect would be some WordPress developer app or a restored app that has old credentials from before the restore.