Postgresql instalacja

apt install postgresql

Ver Cluster Port Status Owner    Data directory               Log file
13  main    5432 down   postgres /var/lib/postgresql/13/main  /var/log/postgresql/postgresql-13-main.log
Creating new PostgreSQL cluster 13/main ...
/usr/lib/postgresql/13/bin/initdb -D /var/lib/postgresql/13/main --auth-local peer --auth-host md5

The database cluster will be initialized with locale "en_US.UTF-8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... Europe/Warsaw

Success. You can now start the database server using:

# pg_ctlcluster 13 main start
Creating config file /etc/default/sysstat with new version
update-alternatives: using /usr/bin/sar.sysstat to provide /usr/bin/sar (sar) in auto mode
# ps -ef
postgres 133752 1 0 08:27 ? 00:00:00 /usr/lib/postgresql/13/bin/postgres -D /var/lib/postgresql/13/main -c config_file=/
postgres 133754 133752 0 08:27 ? 00:00:00 postgres: 13/main: checkpointer
postgres 133755 133752 0 08:27 ? 00:00:00 postgres: 13/main: background writer
postgres 133756 133752 0 08:27 ? 00:00:00 postgres: 13/main: walwriter
postgres 133757 133752 0 08:27 ? 00:00:00 postgres: 13/main: autovacuum launcher
postgres 133758 133752 0 08:27 ? 00:00:00 postgres: 13/main: stats collector
postgres 133759 133752 0 08:27 ? 00:00:00 postgres: 13/main: logical replication launcher
# netstat -tlpn

Active Internet connections (only servers)
Proto Recv-Q Send-Q   Local Address   Foreign Address State  PID/Program name

tcp        0      0   127.0.0.1:5432  0.0.0.0:*       LISTEN 133752/postgres
tcp6       0      0   ::1:5432        :::*            LISTEN 133752/postgres