linux下彻底卸载postgresql

1.查看系统版本

cat /etc/centos-release

 2.停掉服务service postgres-9.6 stop

如果在运行，默认的5432端口就能被监听到

 3.卸载旧版本的postgres

yum remove postgresql*

[root@Adfuser-Test-2 etc]# yum remove postgresql*
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package postgresql.x86_64 0:8.4.20-8.el6_9 will be erased
---> Package postgresql-devel.x86_64 0:8.4.20-8.el6_9 will be erased
--> Processing Dependency: postgresql-devel for package: aam-adfuser-2.80.0-18_1.el6.x86_64
---> Package postgresql-libs.x86_64 0:8.4.20-8.el6_9 will be erased
--> Running transaction check
---> Package aam-adfuser.x86_64 0:2.80.0-18_1.el6 will be erased
--> Finished Dependency ResolutionDependencies Resolved================================================================================Package Arch Version Repository Size
================================================================================
Removing:postgresql x86_64 8.4.20-8.el6_9 @base 14 Mpostgresql-devel x86_64 8.4.20-8.el6_9 @base 3.4 Mpostgresql-libs x86_64 8.4.20-8.el6_9 @base 625 k
Removing for dependencies:aam-adfuser x86_64 2.80.0-18_1.el6 @/aam-adfuser-2.80.0-18_1.el6.x86_6435 MTransaction Summary
================================================================================
Remove 4 Package(s)Installed size: 52 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running TransactionErasing : aam-adfuser-2.80.0-18_1.el6.x86_64 1/4
warning: erase unlink of /etc/adfuser/tmp/aam_pkgs/aam_adfuser-2.80.0.post18-py2-none-any.whl failed: No such file or directory
warning: erase unlink of /etc/adfuser/tmp/aam_pkgs/.must_exist_in_git_repo failed: No such file or directory
warning: erase unlink of /etc/adfuser/tmp/aam_pkgs failed: No such file or directory
warning: erase unlink of /etc/adfuser/tmp failed: No such file or directoryErasing : postgresql-devel-8.4.20-8.el6_9.x86_64 2/4 Erasing : postgresql-8.4.20-8.el6_9.x86_64 3/4 Erasing : postgresql-libs-8.4.20-8.el6_9.x86_64 4/4 Verifying : postgresql-devel-8.4.20-8.el6_9.x86_64 1/4 Verifying : aam-adfuser-2.80.0-18_1.el6.x86_64 2/4 Verifying : postgresql-libs-8.4.20-8.el6_9.x86_64 3/4 Verifying : postgresql-8.4.20-8.el6_9.x86_64 4/4 Removed:postgresql.x86_64 0:8.4.20-8.el6_9 postgresql-devel.x86_64 0:8.4.20-8.el6_9 postgresql-libs.x86_64 0:8.4.20-8.el6_9 Dependency Removed:aam-adfuser.x86_64 0:2.80.0-18_1.el6 Complete!
[root@Adfuser-Test-2 etc]#

4.验证是都卸载完毕

rpm -qa | grep postgresql