PostgreSQL 16 : PostgreSQL over SSL/TLS2023/12/07 |
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Enable SSL/TLS connection to PostgreSQL.
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| [1] |
Get SSL/TLS certificate or
Create self signed certificate first.
It uses self signed certificate on this example. |
| [2] | Copy certificates and configure PostgreSQL. |
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[root@www ~]# cp /etc/pki/tls/certs/server.{crt,key} /var/lib/pgsql/data/ [root@www ~]# chown postgres:postgres /var/lib/pgsql/data/server.{crt,key} [root@www ~]# chmod 600 /var/lib/pgsql/data/server.{crt,key}
[root@www ~]#
vi /var/lib/pgsql/data/postgresql.conf # line 108 : uncomment and change ssl = on
# line 110, 113 : uncomment and change to your own certs ssl_cert_file = ' server.crt 'ssl_key_file = ' server.key '
[root@www ~]#
vi /var/lib/pgsql/data/pg_hba.conf # line 81 and later : settings for authentication methods local all all peer # IPv4 local connections: host all all 127.0.0.1/32 ident # IPv6 local connections: host all all ::1/128 ident # Allow replication connections from localhost, by a user with the # replication privilege. local replication all peer host replication all 127.0.0.1/32 ident host replication all ::1/128 ident # add to the end # [hostssl] ⇒ use TCP/IP connection only when enabling SSL/TLS # [10.0.0.0/24] ⇒ allowed network to connect # [scram-sha-256] ⇒ use SCRAM-SHA-256 password method hostssl all all 10.0.0.0/24 scram-sha-256[root@www ~]# systemctl restart postgresql
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| [3] | Verify settings to connect to PostgreSQL Database from hosts in network you allowed to connect. |
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# no SSL/TLS on Unix socket connection [cent@www ~]$ psql testdb
psql (16.0)
Type "help" for help.
testdb=> \q
# on TCP/IP connection, SSL/TLS is enabled # on SSL/TLS connection, messages [SSL connection ***] is shown [cent@www ~]$ psql -h www.srv.world testdb
Password for user cent:
psql (16.0)
SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, compression: off)
Type "help" for help.
testdb=> \q
# SSL/TLS is enabled from other hosts, too [root@node01 ~]# psql -h www.srv.world -d testdb -U cent Password for user cent: psql (16.0) SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, compression: off) Type "help" for help. testdb=> |
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