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Nextcloud cannot connect to Digital Ocean Postgresql

Posted on April 18, 2020

Hi,

I’ve been trying to migrate a Nextcloud db instance running as a pod in Digital Ocean Kubernetes to Digital Ocean’s managed database service unsuccessfully. I’ve been able to communicate and migrate the data from the db to the managed postgres using the connection string provided from the portal. I also, ensured the db can only communicate through certain endpoints like the managed k8s. However, I’m just not being able to switch the database in the nextcloud instance.

The instance is in maintenance mode.

...
'dbtype' => 'pgsql',
'dbname' => '[my_database]',
'dbhost' => '[postgres_do_db_host_from_portal];sslmode=require',
'dbport' => '[postgres_do_db_port_from_portal]',
'dbtableprefix' => 'oc_',
'dbuser' => '[postgres_do_db_user_from_portal]',
'dbpassword' => '[unsalted_unencrypted_password_from_do_portal]',
...

Connection error:

root@nextcloud-pod:/var/www/html# sudo -u www-data php occ config:list
An unhandled exception has been thrown:
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:68
Stack trace:
#0 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(420): OC\DB\Connection->connect()
#1 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(380): Doctrine\DBAL\Connection->getDatabasePlatformVersion()
#2 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(324): Doctrine\DBAL\Connection->detectDatabasePlatform()
#3 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(683): Doctrine\DBAL\Connection->getDatabasePlatform()
#4 /var/www/html/lib/private/DB/Connection.php(155): Doctrine\DBAL\Connection->setTransactionIsolation(2)
#5 /var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/DriverManager.php(195): OC\DB\Connection->__construct(Array, Object(Doctrine\DBAL\Driver\PDOPgSql\Driver), Object(Doctrine\DBAL\Configuration), Object(Doctrine\Common\EventManager))
#6 /var/www/html/lib/private/DB/ConnectionFactory.php(157): Doctrine\DBAL\DriverManager::getConnection(Array, Object(Doctrine\DBAL\Configuration), Object(Doctrine\Common\EventManager))
#7 /var/www/html/lib/private/Server.php(748): OC\DB\ConnectionFactory->getConnection('pgsql', Array)
#8 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#9 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OCP\\IDBConnecti...')
#10 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\ServerContainer->query('OCP\\IDBConnecti...')
#11 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(114): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(OC\Server))
#12 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('DatabaseConnect...')
#13 /var/www/html/lib/private/Server.php(1664): OC\ServerContainer->query('DatabaseConnect...')
#14 /var/www/html/lib/private/Server.php(421): OC\Server->getDatabaseConnection()
#15 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#16 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OC\\Authenticati...')
#17 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(70): OC\ServerContainer->query('OC\\Authenticati...', true)
#18 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(100): OC\AppFramework\Utility\SimpleContainer->buildClass(Object(ReflectionClass))
#19 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(115): OC\AppFramework\Utility\SimpleContainer->resolve('OC\\Authenticati...')
#20 /var/www/html/lib/private/ServerContainer.php(150): OC\AppFramework\Utility\SimpleContainer->query('OC\\Authenticati...', true)
#21 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(70): OC\ServerContainer->query('OC\\Authenticati...', true)
#22 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(100): OC\AppFramework\Utility\SimpleContainer->buildClass(Object(ReflectionClass))
#23 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(115): OC\AppFramework\Utility\SimpleContainer->resolve('OC\\Authenticati...')
#24 /var/www/html/lib/private/ServerContainer.php(150): OC\AppFramework\Utility\SimpleContainer->query('OC\\Authenticati...', true)
#25 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\ServerContainer->query('OC\\Authenticati...')
#26 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(114): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(OC\Server))
#27 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OC\\Authenticati...')
#28 /var/www/html/lib/private/Server.php(433): OC\ServerContainer->query('OC\\Authenticati...')
#29 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#30 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OC\\User\\Session')
#31 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\ServerContainer->query('OC\\User\\Session')
#32 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(114): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(OC\Server))
#33 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('UserSession')
#34 /var/www/html/lib/private/Server.php(1547): OC\ServerContainer->query('UserSession')
#35 /var/www/html/lib/private/Server.php(1143): OC\Server->getSession()
#36 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#37 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OC\\Security\\CSR...')
#38 /var/www/html/lib/private/Server.php(1138): OC\ServerContainer->query('OC\\Security\\CSR...')
#39 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#40 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OC\\Security\\CSR...')
#41 /var/www/html/lib/private/Server.php(2011): OC\ServerContainer->query('OC\\Security\\CSR...')
#42 /var/www/html/lib/private/Server.php(937): OC\Server->getCsrfTokenManager()
#43 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#44 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OCP\\IRequest')
#45 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\ServerContainer->query('OCP\\IRequest')
#46 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(114): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(OC\Server))
#47 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('Request')
#48 /var/www/html/lib/private/Server.php(1414): OC\ServerContainer->query('Request')
#49 /var/www/html/lib/private/Server.php(579): OC\Server->getRequest()
#50 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\Server->OC\{closure}(Object(OC\Server))
#51 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('OCP\\L10N\\IFacto...')
#52 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\ServerContainer->query('OCP\\L10N\\IFacto...')
#53 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(114): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(OC\Server))
#54 /var/www/html/lib/private/ServerContainer.php(125): Pimple\Container->offsetGet('L10NFactory')
#55 /var/www/html/lib/private/Server.php(1600): OC\ServerContainer->query('L10NFactory')
#56 /var/www/html/lib/private/Server.php(1611): OC\Server->getL10NFactory()
#57 /var/www/html/lib/base.php(239): OC\Server->getL10N('lib')
#58 /var/www/html/lib/base.php(650): OC::checkConfig()
#59 /var/www/html/lib/base.php(1089): OC::init()
#60 /var/www/html/console.php(48): require_once('/var/www/html/l...')
#61 /var/www/html/occ(11): require_once('/var/www/html/c...')


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In my case, it was for postgres. Here it is:

‘dbtype’ => ‘pgsql’, ‘dbname’ => ‘your_database_name’, ‘dbhost’ => ‘digitalocean_manage_db_server_hostname:digitalocean_manage_db_server_port’, ‘dbuser’ => ‘your_database_user’, ‘dbpassword’ => ‘your_database_password’

Heya,

I would recommend to check our article on How to Connect to PostgreSQL Database Clusters

https://docs.digitalocean.com/products/databases/postgresql/how-to/connect/

This should help you to establish your connection to the Managed PostgreSQL Database.

Hope that this helps!

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