I encountered a problem on a Linux Ubuntu server running Plesk 18.0.60 while upgrading the PHP version.
The server runs a PostgreSQL 14 server (ONLY version 14 and ONLY one server) and had installed PHP 8.1.
php -v(SSH Terminal) returned version 8.1 .
After preparing my Web application for upgrading the PHP version to 8.3 in production, i installed the new PHP version via the Plesk installer and additionally executed the following command inside the SSH Terminal:
sudo apt install plesk-php83-dev make gccI pressed Y to continue with the full installation process after i was asked to.The installation ran without problems and lead to the global PHP command being replaced by the newer version
php -vreturned version 8.3 as intended.
At that point, the PostgreSQL server stopped accepting any connections.
I noticed this when my application spit errors about being unable to establish connectionSQLSTATE[08006] [7] connection to server at "127.0.0.1", port 5432 failed: Connection refused. Is the server running on that host and accepting TCP/IP connections?
What i observed
Running the command
psqlreturned the following:
psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"Running the command
pg_lsclustersin Shell showed an offline (down) cluster with version: 14 and name: main
Running the command sudo systemct1 status postgresql.service showed an Active (exited) connection.I then tried to restart the service with sudo service postgresql restart, but it changed nothing.
I then looked at the log file with
nano /var/log/postgresql/postgresql-14-main.logIt only showed
LOG: received fast shutdown requestLOG: aborting any active transactionsLOG: background worker "logical replica>LOG: shutting downLOG: database system is shut downwith the shutdown happening exactly when i installed PHP 8.3 in Shell.