PostgreSQL install GIS plug-in create extension PostGIS_ topology

postgres-# ;
ERROR: could not open extension control file “/usr/pgsql-10/share/extension/postgis_topology.control”: No such file or directory
postgres=# CREATE EXTENSION postgis_topology
;
ERROR: could not open extension control file “/usr/pgsql-10/share/extension/postgis_topology.control”: No such file or directory

!

1 error message

postgres-# ;
ERROR:  could not open extension control file "/usr/pgsql-10/share/extension/postgis_topology.control": No such file or directory
postgres=# CREATE EXTENSION postgis_topology
;
ERROR:  could not open extension control file "/usr/pgsql-10/share/extension/postgis_topology.control": No such file or directory

2 yum install

yum search postgis  ; yum install -y postgis25_10(yum install -y postgis30_10)

3 pgsql establish

postgres=# CREATE EXTENSION postgis_topology
;
ERROR:  required extension "postgis" is not installed
HINT:  Use CREATE EXTENSION ... CASCADE to install required extensions too.
postgres=# CREATE EXTENSION postgis 
;
CREATE EXTENSION
postgres=# CREATE EXTENSION postgis_topology
;
CREATE EXTENSION