We will use a CentOS server to install PostgreSQL. The below command installs the PostgreSQL server.<\/p>\n
[root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> dnf install postgresql15-server -y<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> postgresql-setup initdb<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> systemctl start postgresql<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> systemctl status postgresql<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> systemctl enable postgresql<\/p>\n The PostgreSQL listens on the localhost by default. If other servers such as application servers connect remotely to this DB server, we need to modify the below configuration file.<\/p>\n Add the below line at the end of the file “\/var\/lib\/pgsql\/data\/pg_hba.conf<\/em>” after keeping a copy of the original file elsewhere:<\/p>\n host all all 0.0.0.0\/0 md5<\/em><\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> systemctl restart postgresql<\/p>\n Now a new user postgres will be automatically created<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> cat \/etc\/passwd | grep postgres Now, let us access the newly created BD service and get to the\u00a0postgreSQL<\/em> prompt:<\/p>\n [root@SHIJU-TEST-PGSQL-01 ~]#<\/strong> su – postgres [postgres<\/span>@SHIJU-TEST-PGSQL-01 ~]$<\/strong> psql<\/p>\n ====== ===<\/em> The command to list all existing databases in the server is “\\l<\/strong>” as follows:<\/p>\n postgres=#<\/strong> \\l postgres=#<\/em> Now let us assign\/reset DB root user password:<\/p>\n postgres=#<\/strong> \\password We will use a CentOS server to install PostgreSQL. The below command installs the PostgreSQL server. [root@SHIJU-TEST-PGSQL-01 ~]# dnf install postgresql15-server -y [root@SHIJU-TEST-PGSQL-01 ~]# postgresql-setup […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":1786,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-1681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-database"],"_links":{"self":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1681"}],"version-history":[{"count":13,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1681\/revisions"}],"predecessor-version":[{"id":1695,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1681\/revisions\/1695"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/media\/1786"}],"wp:attachment":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1681"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\npostgres:x:26:26:PostgreSQL Server:\/var\/lib\/pgsql:\/bin\/bash<\/p>\n
\nLast login: Sun Aug 25 09:24:00 UTC 2024 on pts\/3<\/p>\n
\npsql (15.8)<\/em>
\nType “help” for help.<\/em>
\npostgres=#<\/em><\/span>
\n====== ===<\/em><\/p>\n
\n====== ====<\/em>
\n List of databases<\/em>
\n Name | Owner | Encoding | Collate | Ctype | ICU Locale | Locale Provider | Access privileges<\/em>
\n———–+———-+———-+———+———+————+—————–+———————–<\/em>
\n postgres | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc |<\/em>
\n template0 | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc | =c\/postgres +<\/em>
\n | | | | | | | postgres=CTc\/postgres<\/em>
\n template1 | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc | =c\/postgres +<\/em>
\n | | | | | | | postgres=CTc\/postgres<\/em>
\n(3 rows)<\/em><\/p>\n
\n====== ====<\/em><\/p>\n
\n===== ===<\/em>
\n Enter new password for user “postgres”: **********<\/em>
\n Enter it again:\u00a0**********<\/em>
\n postgres=#<\/em>
\n===== ===<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"