Unable to upgrade from 19 to 20 ("SQLSTATE[08006] [7] timeout expired")


Hello, I have been running Nextcloud on a Raspberry Pi using docker-compose for a while. As I am still running version 19, I would like to upgrade to at least version 20. I tried to follow the instructions from here: GitHub - nextcloud/docker: ⛴ Docker image of Nextcloud

However, I am unable to upgrade. This is the first time I have an issue like this. I read other posts related to the upgrade from 19 to 20, so it looks like I am not alone, however none of them seemed to correspond to my particular error (if there is one, sorry for this duplicate post…).

I will provide more information below, but don’t hesitate to ask for more information if necessary :slight_smile:

System information and versions

  • Hardware: Raspberry Pi 3 Model B (or B+, I don’t remember exactly)
  • OS: Raspbian GNU/Linux 9 (stretch)
  • Docker version 19.03.15, build 99e3ed8919
  • docker-compose version 1.26.0, build unknown


Here is the docker-compose file I use to configure Nextcloud and the database:

version: '2'

    driver: local
    driver: local

    image: postgres:12.3-alpine
    mem_limit: 100m
    memswap_limit: 50m
      - db:/var/lib/postgresql/data
      - db.env
      - internal

    image: nextcloud:19.0.1-apache  # I changed this to 'nextcloud:20.0.14-apache'
    mem_limit: 500m
    memswap_limit: 500m
    hostname: <MY HOSTNAME>
      - db
      - db.env
      - app.env
      - web
      - internal
      - 8080:80
      - traefik.enable=true
      - traefik.frontend.rule=Host:<MY HOSTNAME>
      - traefik.port=80
      - traefik.docker.network=web
      - data:/var/www/html
      - <MOUNT FOLDER PATH>/mpm_prefork.conf:/etc/apache2/mods-enabled/mpm_prefork.conf

    external: true

I use traefik (another container) to handle certificates for HTTPS connections.


As you can see in the docker-compose file, I had to override mpm_prefork.conf. The reason for that is that my Raspberry Pi cannot handle too many requests at once.

In case that might explain my issue, I provide this file here:

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxRequestWorkers: maximum number of server processes allowed to start
# MaxConnectionsPerChild: maximum number of requests a server process serves

<IfModule mpm_prefork_module>
	StartServers			 2
	MinSpareServers		  2
	MaxSpareServers		 2
	MaxRequestWorkers	  10
	MaxConnectionsPerChild   0

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

Steps which lead to the issue

  1. sudo docker-compose down
  2. Change nextcloud:19.0.1-apache to nextcloud:20.0.14-apache in docker-compose.yml
  3. sudo docker-compose pull
  4. sudo docker-compose up -d
  5. sudo docker-compose logs -f (see the logs of docker-compose below, the container app_1 crashes)
  6. sudo docker-compose start to restart app_1. I see the same logs, but app_1 does not crash this time.
  7. Open the Nextcloud URL in my browser (error 500):
Internal Server Error

The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

The only way for me to have a working Nextcloud instance is to go back to the previous version by restoring the volumes. So I cannot upgrade.

docker-compose logs

Here are the detailed logs from sudo docker-compose logs -f:

Attaching to nextcloud_app_1, nextcloud_db_1
db_1   | 
db_1   | PostgreSQL Database directory appears to contain a database; Skipping initialization
db_1   | 
db_1   | 2021-12-19 14:56:32.922 UTC [1] LOG:  starting PostgreSQL 12.3 on arm-unknown-linux-musleabihf, compiled by gcc (Alpine 9.3.0) 9.3.0, 32-bit
db_1   | 2021-12-19 14:56:32.923 UTC [1] LOG:  listening on IPv4 address "", port 5432
db_1   | 2021-12-19 14:56:32.923 UTC [1] LOG:  listening on IPv6 address "::", port 5432
db_1   | 2021-12-19 14:56:32.949 UTC [1] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db_1   | 2021-12-19 14:56:33.071 UTC [21] LOG:  database system was shut down at 2021-12-19 14:47:32 UTC
app_1  | Initializing nextcloud ...
app_1  | Upgrading nextcloud from ...
db_1   | 2021-12-19 14:56:33.094 UTC [1] LOG:  database system is ready to accept connections
app_1  | Initializing finished
db_1   | 2021-12-19 14:58:09.764 UTC [31] LOG:  could not receive data from client: Connection reset by peer
app_1  | An unhandled exception has been thrown:
app_1  | Doctrine\DBAL\DBALException: Failed to connect to the database: An exception occurred in driver: SQLSTATE[08006] [7] timeout expired in /var/www/html/lib/private/DB/Connection.php:72
app_1  | Stack trace:
app_1  | #0 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1449): OC\DB\Connection->connect()
app_1  | #1 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(892): Doctrine\DBAL\Connection->getWrappedConnection()
app_1  | #2 /var/www/html/lib/private/DB/Connection.php(202): Doctrine\DBAL\Connection->executeQuery('SELECT * FROM "...', Array, Array, NULL)
app_1  | #3 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php(206): OC\DB\Connection->executeQuery('SELECT * FROM "...', Array, Array)
app_1  | #4 /var/www/html/lib/private/DB/QueryBuilder/QueryBuilder.php(248): Doctrine\DBAL\Query\QueryBuilder->execute()
app_1  | #5 /var/www/html/lib/private/AppConfig.php(345): OC\DB\QueryBuilder\QueryBuilder->execute()
app_1  | #6 /var/www/html/lib/private/AppConfig.php(110): OC\AppConfig->loadConfigValues()
app_1  | #7 /var/www/html/lib/private/AppConfig.php(301): OC\AppConfig->getApps()
app_1  | #8 /var/www/html/lib/private/legacy/OC_App.php(967): OC\AppConfig->getValues(false, 'installed_versi...')
app_1  | #9 /var/www/html/lib/private/Server.php(668): OC_App::getAppVersions()
app_1  | #10 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(155): OC\Server->OC\{closure}(Object(OC\Server))
app_1  | #11 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
app_1  | #12 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(122): Pimple\Container->offsetGet('OC\\Memcache\\Fac...')
app_1  | #13 /var/www/html/lib/private/ServerContainer.php(156): OC\AppFramework\Utility\SimpleContainer->query('OC\\Memcache\\Fac...', true)
app_1  | #14 /var/www/html/lib/private/Server.php(1688): OC\ServerContainer->query('OC\\Memcache\\Fac...')
app_1  | #15 /var/www/html/lib/private/Server.php(1028): OC\Server->getMemCacheFactory()
app_1  | #16 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(155): OC\Server->OC\{closure}(Object(OC\Server))
app_1  | #17 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
app_1  | #18 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(122): Pimple\Container->offsetGet('OCP\\Lock\\ILocki...')
app_1  | #19 /var/www/html/lib/private/ServerContainer.php(156): OC\AppFramework\Utility\SimpleContainer->query('OCP\\Lock\\ILocki...', true)
app_1  | #20 /var/www/html/lib/private/Server.php(1988): OC\ServerContainer->query('OCP\\Lock\\ILocki...')
app_1  | #21 /var/www/html/lib/private/Files/View.php(118): OC\Server->getLockingProvider()
app_1  | #22 /var/www/html/lib/private/Server.php(395): OC\Files\View->__construct()
app_1  | #23 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(155): OC\Server->OC\{closure}(Object(OC\Server))
app_1  | #24 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
app_1  | #25 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(122): Pimple\Container->offsetGet('OC\\Files\\Node\\H...')
app_1  | #26 /var/www/html/lib/private/ServerContainer.php(156): OC\AppFramework\Utility\SimpleContainer->query('OC\\Files\\Node\\H...', true)
app_1  | #27 /var/www/html/lib/private/Server.php(1335): OC\ServerContainer->query('OC\\Files\\Node\\H...')
app_1  | #28 /var/www/html/lib/base.php(595): OC\Server->boot()
app_1  | #29 /var/www/html/lib/base.php(1091): OC::init()
app_1  | #30 /var/www/html/console.php(49): require_once('/var/www/html/l...')
app_1  | #31 /var/www/html/occ(11): require_once('/var/www/html/c...')
app_1  | #32 {main}nextcloud_app_1 exited with code 1