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How To Install PostgreSQL 12 on Ubuntu 20.04/18.04/16.04
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Steps to Install PostgreSQL 12 on Ubuntu
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Steps to Install PostgreSQL 12 on Ubuntu
Step 1: Update Ubuntu system
Step 2: Install required package
Step 3: Add PostgreSQL 12 repository
Step 4: Install PostgreSQL 12 on Ubuntu
Step 5: Check PostgreSQL service status
Step 6: Connect PostgreSQL
Step 7: Reset the PostgreSQL password
Step 8: Create PostgreSQL Database
List the PostgreSQL database:
How to Connect to PostgreSQL database:
Step 9: Allow remote connection to PostgreSQL Database
Step 10: Check the Listening address
See also:
Step 1: Update Ubuntu system
It is always recommended to update the system before installing PostgreSQL.
sudo apt update
Step 2: Install required package
sudo apt -y install vim bash-completion wget
If the package is already installed then you will get below output, you can ignore it.
Sample Output:
root@PostgreSQL:~# sudo apt -y install vim bash-completion wget
Reading package lists... Done
Building dependency tree
Reading state information... Done
bash-completion is already the newest version (1:2.11-2ubuntu1).
vim is already the newest version (2:8.2.0716-3ubuntu2).
wget is already the newest version (1.20.3-1ubuntu1).
wget set to manually installed.
The following package was automatically installed and is no longer required:
virtualbox-guest-utils
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 212 not upgraded.
root@PostgreSQL:~#
Step 3: Add PostgreSQL 12 repository
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" |sudo tee /etc/apt/sources.list.d/pgdg.list
Step 4: Install PostgreSQL 12 on Ubuntu
sudo apt update
sudo apt -y install postgresql-12 postgresql-client-12
Sample Output:
root@PostgreSQL:~# sudo apt -y install postgresql-12 postgresql-client-12
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
virtualbox-guest-utils
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
libcommon-sense-perl libjson-perl libjson-xs-perl libpq5
libtypes-serialiser-perl pgdg-keyring postgresql-client-common
postgresql-common sysstat
Suggested packages:
postgresql-doc-12 isag
The following NEW packages will be installed:
libcommon-sense-perl libjson-perl libjson-xs-perl libpq5
libtypes-serialiser-perl pgdg-keyring postgresql-12 postgresql-client-12
postgresql-client-common postgresql-common sysstat
0 upgraded, 11 newly installed, 0 to remove and 212 not upgraded.
Need to get 17.5 MB of archives.
After this operation, 59.4 MB of additional disk space will be used.
Get:1 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 libpq5 amd64 13.3-1.pgdg20.10+1 [177 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu groovy/main amd64 libcommon-sense-perl amd64 3.75-1build2 [20.5 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu groovy/main amd64 libjson-perl all 4.02000-2 [80.9 kB]
Get:4 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 pgdg-keyring all 2018.2 [10.7 kB]
Get:5 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 postgresql-client-common all 226.pgdg20.10+1 [90.6 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu groovy/main amd64 libtypes-serialiser-perl all 1.0-1 [12.1 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu groovy/main amd64 libjson-xs-perl amd64 4.020-1build1 [83.7 kB]
Get:8 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 postgresql-client-12 amd64 12.7-1.pgdg20.10+1 [1,429 kB]
Get:9 http://us.archive.ubuntu.com/ubuntu groovy/main amd64 sysstat amd64 12.4.0-1 [471 kB]
Get:10 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 postgresql-common all 226.pgdg20.10+1 [246 kB]
Get:11 http://apt.postgresql.org/pub/repos/apt groovy-pgdg/main amd64 postgresql-12 amd64 12.7-1.pgdg20.10+1 [14.9 MB]
Fetched 17.5 MB in 15s (1,141 kB/s)
Preconfiguring packages ...
Selecting previously unselected package libcommon-sense-perl.
(Reading database ... 192977 files and directories currently installed.)
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Unpacking libjson-xs-perl (4.020-1build1) ...
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Unpacking libpq5:amd64 (13.3-1.pgdg20.10+1) ...
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Preparing to unpack .../05-pgdg-keyring_2018.2_all.deb ...
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Preparing to unpack .../06-postgresql-client-common_226.pgdg20.10+1_all.deb ...
Unpacking postgresql-client-common (226.pgdg20.10+1) ...
Selecting previously unselected package postgresql-client-12.
Preparing to unpack .../07-postgresql-client-12_12.7-1.pgdg20.10+1_amd64.deb ..
.
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Adding 'diversion of /usr/bin/pg_config to /usr/bin/pg_config.libpq-dev by post
gresql-common'
Unpacking postgresql-common (226.pgdg20.10+1) ...
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Selecting previously unselected package sysstat.
Preparing to unpack .../10-sysstat_12.4.0-1_amd64.deb ...
Unpacking sysstat (12.4.0-1) ...
Setting up pgdg-keyring (2018.2) ...
Removing apt.postgresql.org key from trusted.gpg: OK
Setting up libpq5:amd64 (13.3-1.pgdg20.10+1) ...
Setting up libcommon-sense-perl (3.75-1build2) ...
Setting up libtypes-serialiser-perl (1.0-1) ...
Setting up libjson-perl (4.02000-2) ...
Setting up sysstat (12.4.0-1) ...
Creating config file /etc/default/sysstat with new version
update-alternatives: using /usr/bin/sar.sysstat to provide /usr/bin/sar (sar) i
n auto mode
Created symlink /etc/systemd/system/sysstat.service.wants/sysstat-collect.timer
→ /lib/systemd/system/sysstat-collect.timer.
Created symlink /etc/systemd/system/sysstat.service.wants/sysstat-summary.timer
→ /lib/systemd/system/sysstat-summary.timer.
Created symlink /etc/systemd/system/multi-user.target.wants/sysstat.service → /
lib/systemd/system/sysstat.service.
Setting up postgresql-client-common (226.pgdg20.10+1) ...
Setting up libjson-xs-perl (4.020-1build1) ...
Setting up postgresql-client-12 (12.7-1.pgdg20.10+1) ...
update-alternatives: using /usr/share/postgresql/12/man/man1/psql.1.gz to provi
de /usr/share/man/man1/psql.1.gz (psql.1.gz) in auto mode
Setting up postgresql-common (226.pgdg20.10+1) ...
Adding user postgres to group ssl-cert
Creating config file /etc/postgresql-common/createcluster.conf with new version
Building PostgreSQL dictionaries from installed myspell/hunspell packages...
en_us
Removing obsolete dictionary files:
Created symlink /etc/systemd/system/multi-user.target.wants/postgresql.service
→ /lib/systemd/system/postgresql.service.
Setting up postgresql-12 (12.7-1.pgdg20.10+1) ...
Creating new PostgreSQL cluster 12/main ...
/usr/lib/postgresql/12/bin/initdb -D /var/lib/postgresql/12/main --auth-local p
eer --auth-host md5
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.
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".
Data page checksums are disabled.
fixing permissions on existing directory /var/lib/postgresql/12/main ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... America/New_York
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
Success. You can now start the database server using:
pg_ctlcluster 12 main start
Ver Cluster Port Status Owner Data directory Log file
12 main 5432 down postgres /var/lib/postgresql/12/main /var/log/postgresq
l/postgresql-12-main.log
update-alternatives: using /usr/share/postgresql/12/man/man1/postmaster.1.gz to
provide /usr/share/man/man1/postmaster.1.gz (postmaster.1.gz) in auto mode
Processing triggers for systemd (246.6-1ubuntu1) ...
Processing triggers for man-db (2.9.3-2) ...
Processing triggers for libc-bin (2.32-0ubuntu3) ...
root@PostgreSQL:~#
Step 5: Check PostgreSQL service status
systemctl status postgresql.service
Sample Output:
root@PostgreSQL:~# systemctl status postgresql.service
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor p>
Active: active (exited) since Sun 2021-05-16 09:17:56 EDT; 1min 56s ago
Main PID: 10932 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 4648)
Memory: 0B
CGroup: /system.slice/postgresql.service
May 16 09:17:56 PostgreSQL systemd[1]: Starting PostgreSQL RDBMS...
May 16 09:17:56 PostgreSQL systemd[1]: Finished PostgreSQL RDBMS.
root@PostgreSQL:~#
Step 6: Connect PostgreSQL
sudo su - postgres
Step 7: Reset the PostgreSQL password
It is recommended to reset the password to strong password
psql -c "alter user postgres with password 'StrongAdminP@ssw0rd'"
Sample Output:
root@PostgreSQL:~# sudo su - postgres
postgres@PostgreSQL:~$
postgres@PostgreSQL:~$ psql -c "alter user postgres with password 'StrongAdminP@ssw0rd'"
ALTER ROLE
postgres@PostgreSQL:~$
Step 8: Create PostgreSQL Database
$ psql
$ CREATE DATABASE firsttestdb;
$ CREATE USER testuser1 WITH ENCRYPTED PASSWORD 'MyDBP@ss0rd';
$ GRANT ALL PRIVILEGES ON DATABASE firsttestdb to testuser1;
List the PostgreSQL database:
$l
How to Connect to PostgreSQL database:
c firsttestdb
Sample Output:
postgres=# c firsttestdb
You are now connected to database "firsttestdb" as user "postgres".
firsttestdb=#
Now, we’ll see how to allow remote connections to PostgreSQL DB.
Step 9: Allow remote connection to PostgreSQL Database
sudo nano /etc/postgresql/12/main/postgresql.conf
Uncomment line “listen_addresses = ‘*’“
Save the file and restart the PostgreSQL service
sudo systemctl restart postgresql
Step 10: Check the Listening address
netstat -tunelp | grep 5432
Sample Output:
root@PostgreSQL:~# netstat -antple | grep 5432
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN 135 253939 13850/postgres
tcp6 0 0 :::5432 :::* LISTEN 135 253940 13850/postgres
root@PostgreSQL:~#
Source https://sysadminxpert.com/how-to-install-postgresql-12-on-ubuntu/
Category:
IT , Technical Hacks etc
Posted on:
November 18th, 2021