First of all, a recall how to install Postgres and pgAdmin3 in CentOS (CentOS 6.8, Postgres 9.5 in my case):
[ducfilan@localhost]# su [root@localhost]# wget https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-6-x86_64/pgdg-centos95-9.5-3.noarch.rpm [root@localhost]# rpm -ivh pgdg-centos95-9.5-3.noarch.rpm [root@localhost]# yum install postgresql95-server postgresql95-devel postgresql95-contrib [root@localhost]# service postgresql-9.5 initdb [root@localhost]# service postgresql-9.5 start [root@localhost]# chkconfig postgresql-9.5 on
yum install pgadmin3_95
To start Postgres Admin:
When you add a server to connect to localhost database, the error message appears:
postgresql The server doesn't accept the current user: The server report Ident authentication failed The server doesn't accept the current user: The server reports FATAL: Ident authentication failed for user "pgadmin" If this message appears, the pg_hba.conf entry found for your client / user / database combination is set to "ident" authentication. Some distributions, e.g. Debian, have this by default. To perform ident based authentication successfully, you need additional setup; see the PostgreSQL help for this. For a beginner, it might be more appropriate to use a different authentication method; MD5 encrypted passwords are a good choice, which can be configured by an entry in pg_hba.conf like this: host all all 192.168.0.0/24 md5 This example grants MD5 encrypted password access to all databases to all users on the private network 192.168.0.0/24. You can use the pg_hba.conf editor that is built into pgAdmin III to edit the pg_hba.conf configuration file. After changing pg_hba.conf, you need to trigger a server configuration reload using pg_ctl or by stopping and restarting the server process.
Look at the message, it means that ident authentication is not usable here.
We have to edit the pg_hba.conf file. After several researches, I knew the location of pg_hba.conf file, open it up:
[root@localhost]# nano /var/lib/pgsql/9.5/data/pg_hba.conf
You will find some ident here, change it to md5 (username – password authentication)
Dont forget to restart the postgres service:
<[root@localhost]# service postgresql-9.5 restart
Try again, the sky will be brighter.