How to install MySQL on CentOS
1)chekc centos中是否安装了MySQL
[root@localhost MySQL]# rpm -qa | grep mariadb
mariadb-libs-5.5.52-1.el7.x86_64
2)卸载过程
[root@localhost MySQL]# rpm -e --nodeps mariadb-libs-5.5.52-1.el7.x86_64
3)安装过程
安装顺序如下:
rpm -ivh mysql-community-common-5.7.17-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.17-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.17-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.17-1.el7.x86_64.rpm
rpm -ivh net-tools-2.0-0.17.20131004git.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.17-1.el7.x86_64.rpm
4) 启动mysql
[root@localhost MySQL]# systemctl start mysqld
查看启动情况
[root@localhost MySQL]# ps -aux|grep -i mysql
mysql 2543 0.8 23.7 1119216 179968 ? Sl 20:44 0:00 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
root 2586 0.0 0.1 112648 976 pts/0 S+ 20:45 0:00 grep --color=auto -i mysql
或者
[root@localhost MySQL]# netstat -na|grep -i 3306
tcp6 0 0 :::3306 :::* LISTEN
unix 2 [ ACC ] STREAM LISTENING 13306 /var/run/dbus/system_bus_socket
5)使用root登陆MySQL
[root@localhost MySQL]# mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[root@localhost sbin]# whereis mysql
mysql: /usr/bin/mysql /usr/lib64/mysql /usr/include/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
可以查看mysql的安装目录是/usr/bin
查看log
[root@localhost sbin]# cat /var/log/mysqld.log
2017-01-10T12:43:28.664990Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-01-10T12:43:32.450615Z 0 [Warning] InnoDB: New log files created, LSN=45790
2017-01-10T12:43:35.748969Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-01-10T12:43:36.574416Z 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: 6779b126-d732-11e6-b856-0800275f50a5.
2017-01-10T12:43:36.677747Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2017-01-10T12:43:36.678899Z 1 [Note] A temporary password is generated for root@localhost: +x/GZM(Hf9=f
2017-01-10T12:44:38.169331Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-01-10T12:44:38.172923Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.17) starting as process 2543 ...
2017-01-10T12:44:38.179188Z 0 [Note] InnoDB: PUNCH HOLE support available
2017-01-10T12:44:38.179226Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-01-10T12:44:38.179231Z 0 [Note] InnoDB: Uses event mutexes
2017-01-10T12:44:38.179235Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-01-10T12:44:38.179239Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-01-10T12:44:38.179245Z 0 [Note] InnoDB: Using Linux native AIO
2017-01-10T12:44:38.179462Z 0 [Note] InnoDB: Number of pools: 1
2017-01-10T12:44:38.179555Z 0 [Note] InnoDB: Using CPU crc32 instructions
2017-01-10T12:44:38.181302Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2017-01-10T12:44:38.188077Z 0 [Note] InnoDB: Completed initialization of buffer pool
2017-01-10T12:44:38.191550Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2017-01-10T12:44:38.203389Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2017-01-10T12:44:38.287616Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2017-01-10T12:44:38.287803Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2017-01-10T12:44:38.860560Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2017-01-10T12:44:38.865801Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2017-01-10T12:44:38.865872Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2017-01-10T12:44:38.867349Z 0 [Note] InnoDB: Waiting for purge to start
2017-01-10T12:44:38.920092Z 0 [Note] InnoDB: 5.7.17 started; log sequence number 2536132
2017-01-10T12:44:38.920917Z 0 [Note] Plugin 'FEDERATED' is disabled.
2017-01-10T12:44:38.932784Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
2017-01-10T12:44:38.935813Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170110 20:44:38
2017-01-10T12:44:39.061606Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2017-01-10T12:44:39.062541Z 0 [Warning] CA certificate ca.pem is self signed.
2017-01-10T12:44:39.109111Z 0 [Note] Server hostname (bind-address): '*'; port: 3306
2017-01-10T12:44:39.109573Z 0 [Note] IPv6 is available.
2017-01-10T12:44:39.109605Z 0 [Note] - '::' resolves to '::';
2017-01-10T12:44:39.109643Z 0 [Note] Server socket created on IP: '::'.
2017-01-10T12:44:39.320841Z 0 [Note] Event Scheduler: Loaded 0 events
2017-01-10T12:44:39.321028Z 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.
2017-01-10T12:44:39.321045Z 0 [Note] Beginning of list of non-natively partitioned tables
2017-01-10T12:44:39.349166Z 0 [Note] End of list of non-natively partitioned tables
2017-01-10T12:44:39.349489Z 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.7.17' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server (GPL)
2017-01-10T12:47:14.947473Z 3 [Note] Access denied for user 'root'@'localhost' (using password: NO)
6) mysql设置
set global validate_password_policy=0
alter user 'root'@'localhost' identified by 'passw0rd';
create database hive;
create user 'hive' identified by 'passw0rd';
grant all privileges on hive.* to 'hive'@'%';
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