CentOS7 use yum install PostgreSQL and PostGIS

1. Yum update source
   CentOS7 default yum source PostgreSQL version is too low, not suitable for use in this version. In https://yum.postgresql.org/repopackages.php find a suitable CentOS7 on the RPM source, copy its url address, use yum install.
   Install epel (Extra Packages for Enterprise Linux 7 ), for stability, the default yum source CentOS7 missing a lot of components that can be found on epel.
   command:
   yum install -y https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-centos10-10-2.noarch.rpm
yum -y install epel-release

2. PostgreSQL installation
   using the yum search postgrecommand to see multiple versions of PostgreSQL, here I chose PostgreSQL10.
   yum install -y postgresql10-server postgresql10-contrib
   Initialization
   /usr/pgsql-10/bin/postgresql10-setup initdb
   Set boot
   systemctl enable postgresql-10
   to start the database
   systemctl start postgresql-10
   
3. Configuration database
   configuration for remote access, edit /var/lib/pgsql/10/data/postgresql.conf, find listen_addresses, if you want to be open to all IP, the value listen_addresses changed to '*', if only open for part of the IP, between multiple IP with a ,separated (comma and space).
   Configuring account access, edit /var/lib/pgsql/10/data/pg_hba.conf, file is divided into five, namely, TYPE, DATABASE, USER, ADDRESS, METHOD, you can set access permissions for users of different databases in different IP addresses. METHOD Analytical last column as follows:
   Trust any connection is allowed, no password
   reject rejected Matching (front several conditions) Request
   MD5 MD5 receiving a password encrypted
   password to log receiving a password, use only trusted network in this way
   gss use gssapi certification, only available in connection tcp / ip
   SSPI is only one way windows available
   krb5 not commonly used, only TCP / IP is available
   using the operating system user authentication ident, verify that it meets the requests of the database username
   ldap server using LDAP authentication
   cert using ssl client authentication
   pam pam module using the operating system's service
   if required all IP are using a login password is configured host all all 0.0.0.0/0 md5.
   
4. PostGIS installation
   using the yum search postgiscommand to see multiple versions of PostGIS, here I choose postgis25, yum install -y postgis25_10, switch to the postgres user after installation, open the extension.
   

// 开启插件  
# su postgres  
# psql  
// 开启pgsql的插件  
postgres=# create extension postgis;  
postgres=# create extension postgis_topology;  
postgres=# create extension fuzzystrmatch;  
postgres=# create extension address_standardizer;  
postgres=# create extension address_standardizer_data_us;  
postgres=# create extension postgis_tiger_geocoder;  

So far, PostgreSQL and PostGIS installed.

Reference Site

http://postgis.net/install/
https://blog.csdn.net/weixin_34150830/article/details/92529479
https://www.cnblogs.com/xulingjie/p/9605472.html
https://www.cnblogs.com/EasonJim/p/9023607.html