問(wèn)題描述

1. 服務(wù)器上安裝mysql時(shí)出現(xiàn)了報(bào)錯(cuò)，簡(jiǎn)單記錄下解決方案

   源 "MySQL 5.7 Community Server" 的 GPG 密鑰已安裝，但是不適用于此軟件包。請(qǐng)檢查源的公鑰 URL 是否配置正確。
   
   
    失敗的軟件包是：mysql-community-client-5.7.40-1.el7.x86_64
    GPG  密鑰配置為：file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
   

2. 執(zhí)行：rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

   [root@localhost mysql]# rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
   [root@localhost mysql]# yum install mysql-server
   已加載插件：fastestmirror, langpacks
   Loading mirror speeds from cached hostfile
   正在解決依賴關(guān)系
   --> 正在檢查事務(wù)
   ---> 軟件包 mysql-community-server.x86_64.0.5.7.40-1.el7 將被 安裝
   --> 正在處理依賴關(guān)系 mysql-community-common(x86-64) = 5.7.40-1.el7，它被軟件包 mysql-community-server-5.7.40-1.el7.x86_64 需要
   --> 正在處理依賴關(guān)系 mysql-community-client(x86-64) >= 5.7.9，它被軟件包 mysql-community-server-5.7.40-1.el7.x86_64 需要
   --> 正在檢查事務(wù)
   ---> 軟件包 mysql-community-client.x86_64.0.5.7.40-1.el7 將被 安裝
   --> 正在處理依賴關(guān)系 mysql-community-libs(x86-64) >= 5.7.9，它被軟件包 mysql-community-client-5.7.40-1.el7.x86_64 需要
   ---> 軟件包 mysql-community-common.x86_64.0.5.7.40-1.el7 將被 安裝
   --> 正在檢查事務(wù)
   ---> 軟件包 mariadb-libs.x86_64.1.5.5.60-1.el7_5 將被 取代
   --> 正在處理依賴關(guān)系 libmysqlclient.so.18()(64bit)，它被軟件包 2:postfix-2.10.1-7.el7.x86_64 需要
   --> 正在處理依賴關(guān)系 libmysqlclient.so.18(libmysqlclient_18)(64bit)，它被軟件包 2:postfix-2.10.1-7.el7.x86_64 需要
   ---> 軟件包 mysql-community-libs.x86_64.0.5.7.40-1.el7 將被 舍棄
   --> 正在檢查事務(wù)
   ---> 軟件包 mysql-community-libs-compat.x86_64.0.5.7.40-1.el7 將被 舍棄
   --> 解決依賴關(guān)系完成
   
   依賴關(guān)系解決
   

3. 啟動(dòng)mysql服務(wù)并查看運(yùn)行狀態(tài)

   [root@localhost mysql]# service mysqld start
   Redirecting to /bin/systemctl start mysqld.service
   [root@localhost mysql]# systemctl status mysqld
   ● mysqld.service - MySQL Server
      Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
      Active: active (running) since 四 2022-10-13 05:42:37 UTC; 7s ago
        Docs: man:mysqld(8)
              http://dev.mysql.com/doc/refman/en/using-systemd.html
     Process: 10239 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
     Process: 10181 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
    Main PID: 10242 (mysqld)
       Tasks: 27
      CGroup: /system.slice/mysqld.service
              └─10242 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
   
   10月 13 05:42:26 localhost.localdomain systemd[1]: Starting MySQL Server...
   10月 13 05:42:37 localhost.localdomain systemd[1]: Started MySQL Server.
   

4. 查看mysql初始密碼：grep 'A temporary password' /var/log/mysqld.log

   [root@localhost mysql]# grep 'A temporary password' /var/log/mysqld.log
   2022-10-13T05:42:35.302480Z 1 [Note] A temporary password is generated for root@localhost: !oCdG%3prdP1
   

   5. 使用初始密碼進(jìn)行登錄，報(bào)錯(cuò)：ERROR 1045 (28000): Access denied for user 'root'@'localhost'
   6. 修改 /etc/my.cnf文件，在最后加入skip-grant-tables

   # For advice on how to change settings please see
   # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
   
   [mysqld]
   #
   # Remove leading # and set to the amount of RAM for the most important data
   # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
   # innodb_buffer_pool_size = 128M
   #
   # Remove leading # to turn on a very important data integrity option: logging
   # changes to the binary log between backups.
   # log_bin
   #
   # Remove leading # to set options mainly useful for reporting servers.
   # The server defaults are faster for transactions and fast SELECTs.
   # Adjust sizes as needed, experiment to find the optimal values.
   # join_buffer_size = 128M
   # sort_buffer_size = 2M
   # read_rnd_buffer_size = 2M
   datadir=/var/lib/mysql
   socket=/var/lib/mysql/mysql.sock
   
   # Disabling symbolic-links is recommended to prevent assorted security risks
   symbolic-links=0
   
   log-error=/var/log/mysqld.log
   pid-file=/var/run/mysqld/mysqld.pid
   skip-grant-tables
   

5. 然后重啟數(shù)據(jù)庫(kù)：systemctl restart mysqld

   [root@localhost mysql]# systemctl restart mysqld
   

6. 可以使用無(wú)密碼直接登錄：

   [root@localhost mysql]# mysql -uroot -p 
   Enter password: 
   Welcome to the MySQL monitor.  Commands end with ; or \g.
   Your MySQL connection id is 2
   Server version: 5.7.40 MySQL Community Server (GPL)
   
   Copyright (c) 2000, 2022, Oracle and/or its affiliates.
   
   Oracle is a registered trademark of Oracle Corporation and/or its
   affiliates. Other names may be trademarks of their respective
   owners.
   
   Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
   
   mysql> 
   

7. 修改root 密碼前，先刷新一下權(quán)限，然后再修改root密碼文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-535571.html

   mysql> flush privileges;
   Query OK, 0 rows affected (0.01 sec)
   mysql> alter user 'root'@'localhost' identified by '123456';
   Query OK, 0 rows affected (0.00 sec)
   

到了這里，關(guān)于已解決：源 “MySQL 5.7 Community Server“ 的 GPG 密鑰已安裝，但是不適用于此軟件包。請(qǐng)檢查源的公鑰 URL 是否配置正確 和 報(bào)錯(cuò)：`ERROR 1045 (28000的文章就介紹完了。如果您還想了解更多內(nèi)容，請(qǐng)?jiān)谟疑辖撬阉鱐OY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！