1、操作系統版本：Red Hat Enterprise Linux Server release 7.2 (Maipo)

2、Mysql版本：mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

二、安裝說明

1、官網上關於mysql 5.7的各個rpm包的說明如下：

2、官網上關於mysql5.7用rpm包安裝的各個路徑說明如下：

3、官網上關於標準安裝需要安裝哪些rpm包的說明如下：

4、官網上關於安裝後初始化的說明：使用rpm包安裝後會在第一次啟動服務時自動完成初始化，無需再手動執行初始化操作

三、安裝過程

1、解壓mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

2、卸載掉系統中的mariadb-libs

3、按照下圖順序依次安裝各個rpm包，各個rpm包之間有依賴關系，最後安裝mysql-community-server-5.7.20-1.el7.x86_64.rpm時報缺少相關依賴包，使用yum裝上，再安裝就沒問題了

4、查看mysql的相關目錄，是空的

5、安裝完後mysql服務已經enable，但是沒有啟動，啟動它

6、啟動mysql服務後，日誌如下：其中記錄了隨機生成的初始root密碼“A temporary password is generated for root@localhost: urq2&OKwZd,t”

2018-04-18T10:31:46.894089Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2018-04-18T10:31:50.089964Z 0 [Warning] InnoDB: New log files created, LSN=45790
2018-04-18T10:31:50.319434Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2018-04-18T10:31:50.380647Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: b44683a6-42f3-11e8-8b54-000c29ffe62f.
2018-04-18T10:31:50.382406Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2018-04-18T10:31:50.383390Z 1 [Note] A temporary password is generated for root@localhost: urq2&OKwZd,t
2018-04-18T10:31:54.678495Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2018-04-18T10:31:54.679697Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.20) starting as process 2954 ...
2018-04-18T10:31:54.685450Z 0 [Note] InnoDB: PUNCH HOLE support available
2018-04-18T10:31:54.685476Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2018-04-18T10:31:54.685479Z 0 [Note] InnoDB: Uses event mutexes
2018-04-18T10:31:54.685481Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2018-04-18T10:31:54.685483Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2018-04-18T10:31:54.685486Z 0 [Note] InnoDB: Using Linux native AIO
2018-04-18T10:31:54.685708Z 0 [Note] InnoDB: Number of pools: 1
2018-04-18T10:31:54.685812Z 0 [Note] InnoDB: Using CPU crc32 instructions
2018-04-18T10:31:54.739376Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2018-04-18T10:31:54.753795Z 0 [Note] InnoDB: Completed initialization of buffer pool
2018-04-18T10:31:54.758522Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2018-04-18T10:31:54.772576Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2018-04-18T10:31:54.793537Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2018-04-18T10:31:54.793646Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2018-04-18T10:31:54.952587Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2018-04-18T10:31:54.955544Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2018-04-18T10:31:54.955610Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2018-04-18T10:31:54.957052Z 0 [Note] InnoDB: Waiting for purge to start
2018-04-18T10:31:55.007837Z 0 [Note] InnoDB: 5.7.20 started; log sequence number 2565523
2018-04-18T10:31:55.009136Z 0 [Note] Plugin 'FEDERATED' is disabled.
2018-04-18T10:31:55.018932Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
2018-04-18T10:31:55.027051Z 0 [Note] InnoDB: Buffer pool(s) load completed at 180418 18:31:55
2018-04-18T10:31:55.036775Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2018-04-18T10:31:55.037779Z 0 [Warning] CA certificate ca.pem is self signed.
2018-04-18T10:31:55.092734Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2018-04-18T10:31:55.092981Z 0 [Note] IPv6 is available.
2018-04-18T10:31:55.093007Z 0 [Note]   - '::' resolves to '::';
2018-04-18T10:31:55.093031Z 0 [Note] Server socket created on IP: '::'.
2018-04-18T10:31:55.107483Z 0 [Note] Event Scheduler: Loaded 0 events
2018-04-18T10:31:55.108147Z 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.7.20'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL)
2018-04-18T10:31:55.108170Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. 
2018-04-18T10:31:55.108186Z 0 [Note] Beginning of list of non-natively partitioned tables
2018-04-18T10:31:55.124516Z 0 [Note] End of list of non-natively partitioned tables

7、此時再查看mysql的目錄，相關文件已經自動生成

8、使用日誌中記錄的初始密碼登錄，並修改root密碼

9、使用新密碼成功登錄，安裝完畢

MySQL 5.7.20在RedHat 7.2上通過RPM包安裝