Internal Server Error after watchtower update linuxserver.io Image

Wytoo · February 27, 2024, 9:30am

Support intro

Nextcloud version (eg, 20.0.5): 28.0.2.
Operating system and version (eg, Ubuntu 20.04): Synology Docker, can't tell
Apache or nginx version (eg, Apache 2.4.25): nginx/1.24.0
PHP version (eg, 7.4): 8.2.13

The issue you are facing:

I’ve got nextcloud running on a synology docker. synology is updated to the newest version. I’m using the linuxserver.io image.

After a automated WatchTower Update of my Docker Instance running on my synology, I’m getting a 500 Server Error.

Is this the first time you’ve seen this error? (Y/N): Y

Steps to replicate it:

Start Docker Instance
Go to Website

The output of your Nextcloud log in Admin > Logging:

Can't Access it anymore.

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'datadirectory' => '/config/www/nextcloud/data',
  'instanceid' => 'XX',
  'passwordsalt' => 'XX',
  'secret' => 'X',
  'trusted_domains' => 
  array (
    0 => XX',
    1 => 'XX',
    2 => 'XX',
  ),
  'trusted_proxies' => 
  array (
    0 => 'XX',
    1 => 'XX',
    2 => 'XX',
  ),
  'overwrite.cli.url' => 'XX',
  'forcessl' => true,
  'overwriteprotocol' => 'https',
  'dbtype' => 'mysql',
  'version' => '28.0.2.5',
  'dbname' => 'XX',
  'dbhost' => 'XX',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'XX',
  'dbpassword' => 'XX',
  'installed' => true,
  'theme' => '',
  'loglevel' => 0,
  'maintenance' => false,
  'mail_from_address' => 'XX',
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_domain' => 'XX',
  'mail_smtphost' => 'XX',
  'mail_smtpport' => '587',
  'mail_smtpsecure' => 'ssl',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'XX',
  'mail_smtppassword' => 'XX',
  'default_phone_region' => 'CH',
  'updater.release.channel' => 'stable',
  'filelocking.enabled' => 'true',
  'memcache.locking' => '\\OC\\Memcache\\APCu',
  'updater.secret' => 'XX',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'upgrade.disable-web' => true,
);

The output of your Apache/nginx/system log in /var/log/____:

var/log/nginx/error.log is empty - maybe different path on a synology docker environment.

The last few lines before they repeat itself.

\\AppFramework\\Bootstrap\\Coordinator","type":"->"},{"file":"/app/www/public/lib/base.php","line":1200,"function":"init","class":"OC","type":"::"},{"file":"/app/www/public/index.php","line":37,"args":["/app/www/public/lib/base.php"],"function":"require_once"}],"File":"/app/www/public/lib/private/DB/Connection.php","Line":139,"CustomMessage":"Exception thrown: Doctrine\\DBAL\\Exception"}}
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It’s even telling me to contact you guys

Failed to connect to the database: An exception occurred in the driver: SQLSTATE[HY000] [2054] Server sent charset (0) unknown to the client. Please, report to the developers

EDIT: Seems like exactly this issue-> https://github.com/MariaDB/mariadb-docker/issues/560 → A MariaDB Rollback to 11.3 fixed the issue. the Charset seems to be updated but none compatible

jtr · February 27, 2024, 2:38pm

You’re not the only one that ran into this. It seems many people are running environments with unsupported database versions + automating updates.

To avoid this in the future:

Use only versions of your database server that are officially supported by Nextcloud Server[1] (11.3.x is a short-term release tree from MariaDB; not only is it not LTS, it’s not officially supported by any released version of Nextcloud)
Don’t use latest tags on Docker containers so that you don’t get unexpected version bumps. (applicable whether you auto-update or manually pull image updates)

I’d also suggest not auto-updating, but that’s just my personal preference coming from production environments where auto-updates are a scary way to create support/sysadmin nightmares.

[1] System requirements — Nextcloud latest Administration Manual latest documentation

EDIT: Appears the Nextcloud community got a shout-out in the latest post-mortem about the matter from MariaDB: Post-mortem: PHP and MariaDB Docker issue - MariaDB.org