MySQL 5.7.22 rpm 安裝方式

在Linux系統中，如果要使用關系型數據庫的話，基本都是用的mysql，而且以往7以下版本的centos
系統都是默認的集成有mysql。然而對于現在最新的centos7系統來說，已經不支持mysql數據庫，它默認

內部集成了maridb，如果我們想要使用 mysql 的話，就要先將原來的maridb卸載掉，不然會引起沖突

命令：rpm -qa |grep maridb

[root@hashow-db-master resource]# rpm -e mariadb-libs-5.5.52-1.el7.x86_64
error: Failed dependencies:
        libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
        libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
卸載提示有依賴的包，強制卸載
[root@hashow-db-master resource]# rpm -e --nodeps mariadb-libs-5.5.52-1.el7.x86_64
開始安裝MySQL5.7.22，要按rpm包順序安裝：
[root@hashow-db-master resource]# rpm -ivh mysql-community-common-5.7.22-1.el7.x86_64.rpm
warning: mysql-community-common-5.7.22-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-common-5.7.22-1.e################################# [100%]
[root@hashow-db-master resource]# rpm -ivh mysql-community-libs-5.7.22-1.el7.x86_64.rpm
warning: mysql-community-libs-5.7.22-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-libs-5.7.22-1.el7################################# [100%]
[root@hashow-db-master resource]# rpm -ivh mysql-community-client-5.7.22-1.el7.x86_64.rpm
warning: mysql-community-client-5.7.22-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-client-5.7.22-1.e################################# [100%]
[root@hashow-db-master resource]# rpm -ivh mysql-community-server-5.7.22-1.el7.x86_64.rpm
warning: mysql-community-server-5.7.22-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-server-5.7.22-1.e################################# [100%]