Installing PostgreSQL and PostGIS¶
Install PostgreSQL¶
CentOS repositories provide the PostgreSQL package, but not the PostGIS extensions. We need to add the PGDG repo for PostGIS (it will also provide access to more recente PostgreSQL versions, if needed), and the EPEL repo for some PostGIS deps.
Update the packages list:
yum check-update
Install the package for configuring the PGDG repository:
yum install http://yum.postgresql.org/9.4/redhat/rhel-7-x86_64/pgdg-centos94-9.4-2.noarch.rpm
EPEL repository will provide GDAL packages:
yum install http://mirror.sfo12.us.leaseweb.net/epel/7/x86_64/e/epel-release-7-6.noarch.rpm
Install PostgreSQL, PostGIS and related libs:
yum install postgresql94 postgresql94-contrib postgresql94-server postgresql94-devel postgis2_94
Verify:
rpm -qa | grep postg
postgresql94-libs-9.4.8-1PGDG.rhel7.x86_64
postgresql94-devel-9.4.8-1PGDG.rhel7.x86_64
postgresql94-9.4.8-1PGDG.rhel7.x86_64
postgresql94-contrib-9.4.8-1PGDG.rhel7.x86_64
postgis2_94-2.1.8-1.rhel7.x86_64
postgresql-libs-9.2.15-1.el7_2.x86_64
postgresql94-server-9.4.8-1PGDG.rhel7.x86_64
Init the DB:
/usr/pgsql-9.4/bin/postgresql94-setup initdb
Enable start on boot:
systemctl enable postgresql-9.4.service
Start postgres service by hand:
systemctl start postgresql-9.4.service
To restart or reload the instance, you can use the following commands:
systemctl restart postgresql-9.4.service
systemctl reload postgresql-9.4.service
Setting PostgreSQL access¶
Edit the file /var/lib/pgsql/9.4/data/pg_hba.conf so that the local connection entries
will change to:
# "local" is for Unix domain socket connections only
local all postgres peer
local all all md5
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
Once the configuration file has been edited, restart postgres:
systemctl restart postgresql-9.4.service