常见问题：
1.安装报错
解决方案：
如果安装mysql出现了以上的报错信息.这是却少numactl这个时候如果是Centos就yum -y install numactl就可以解决这个问题了.
ubuntu的就sudo apt-get install numactl就可以解决这个问题了
1.解压及创建目录 [root@hadoop39 local]# tar xzvf mysql-5.7.11-linux-glibc2.5-x86_64.tar.gz [root@hadoop39 local]# mv mysql-5.7.11-linux-glibc2.5-x86_64 mysql [root@hadoop39 local]# mkdir mysql/arch mysql/data mysql/tmp 2.创建my.cnf(见文件) [root@hadoop39 local]# vi /etc/my.cnf [client] port = 3306 socket = /usr/local/mysql/data/mysql.sock default-character-set=utf8mb4 [mysqld] port = 3306 socket = /usr/local/mysql/data/mysql.sock skip-slave-start skip-external-locking key_buffer_size = 256M sort_buffer_size = 2M read_buffer_size = 2M read_rnd_buffer_size = 4M query_cache_size= 32M max_allowed_packet = 16M myisam_sort_buffer_size=128M tmp_table_size=32M table_open_cache = 512 thread_cache_size = 8 wait_timeout = 86400 interactive_timeout = 86400 max_connections = 600 # Try number of CPU's*2 for thread_concurrency #thread_concurrency = 32 #isolation level and default engine default-storage-engine = INNODB transaction-isolation = READ-COMMITTED server-id = 1739 basedir = /usr/local/mysql datadir = /usr/local/mysql/data pid-file = /usr/local/mysql/data/hostname.pid #open performance schema log-warnings sysdate-is-now binlog_format = ROW log_bin_trust_function_creators=1 log-error = /usr/local/mysql/data/hostname.err log-bin = /usr/local/mysql/arch/mysql-bin expire_logs_days = 7 innodb_write_io_threads=16 relay-log = /usr/local/mysql/relay_log/relay-log relay-log-index = /usr/local/mysql/relay_log/relay-log.index relay_log_info_file= /usr/local/mysql/relay_log/relay-log.info log_slave_updates=1 gtid_mode=OFF enforce_gtid_consistency=OFF # slave slave-parallel-type=LOGICAL_CLOCK slave-parallel-workers=4 master_info_repository=TABLE relay_log_info_repository=TABLE relay_log_recovery=ON #other logs #general_log =1 #general_log_file = /usr/local/mysql/data/general_log.err #slow_query_log=1 #slow_query_log_file=/usr/local/mysql/data/slow_log.err #for replication slave sync_binlog = 500 #for innodb options innodb_data_home_dir = /usr/local/mysql/data/ innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend innodb_log_group_home_dir = /usr/local/mysql/arch innodb_log_files_in_group = 4 innodb_log_file_size = 1G innodb_log_buffer_size = 200M #根据生产需要，调整pool size innodb_buffer_pool_size = 2G #innodb_additional_mem_pool_size = 50M #deprecated in 5.6 tmpdir = /usr/local/mysql/tmp innodb_lock_wait_timeout = 1000 #innodb_thread_concurrency = 0 innodb_flush_log_at_trx_commit = 2 innodb_locks_unsafe_for_binlog=1 #innodb io features: add for mysql5.5.8 performance_schema innodb_read_io_threads=4 innodb-write-io-threads=4 innodb-io-capacity=200 #purge threads change default(0) to 1 for purge innodb_purge_threads=1 innodb_use_native_aio=on #case-sensitive file names and separate tablespace innodb_file_per_table = 1 lower_case_table_names=1 [mysqldump] quick max_allowed_packet = 128M [mysql] no-auto-rehash default-character-set=utf8mb4 [mysqlhotcopy] interactive-timeout [myisamchk] key_buffer_size = 256M sort_buffer_size = 256M read_buffer = 2M write_buffer = 2M 3.创建用户组及用户 [root@hadoop39 local]# groupadd -g 101 dba [root@hadoop39 local]# useradd -u 514 -g dba -G root -d /usr/local/mysql mysqladmin [root@hadoop39 local]# id mysqladmin uid=514(mysqladmin) gid=101(dba) groups=101(dba),0(root) ## 一般不需要设置mysqladmin的密码，直接从root或者LDAP用户sudo切换 #[root@hadoop39 local]# passwd mysqladmin Changing password for user mysqladmin. New UNIX password: BAD PASSWORD: it is too simplistic/systematic Retype new UNIX password: passwd: all authentication tokens updated successfully. ## if user mysqladmin is existing,please execute the following command of usermod. #[root@hadoop39 local]# usermod -u 514 -g dba -G root -d /usr/local/mysql mysqladmin 4.copy 环境变量配置文件至mysqladmin用户的home目录中,为了以下步骤配置个人环境变量 [root@hadoop39 local]# cp /etc/skel/.* /usr/local/mysql ###important 5.配置环境变量 [root@hadoop39 local]# vi mysql/.bash_profile # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs export MYSQL_BASE=/usr/local/mysql export PATH=${MYSQL_BASE}/bin:$PATH unset USERNAME #stty erase ^H set umask to 022 umask 022 PS1=`uname -n`":"'$USER'":"'$PWD'":>"; export PS1 ## end 6.赋权限和用户组，切换用户mysqladmin，安装 [root@hadoop39 local]# chown mysqladmin:dba /etc/my.cnf [root@hadoop39 local]# chmod 640 /etc/my.cnf [root@hadoop39 local]# chown -R mysqladmin:dba /usr/local/mysql [root@hadoop39 local]# chmod -R 755 /usr/local/mysql 7.配置服务及开机自启动 [root@hadoop39 local]# cd /usr/local/mysql #将服务文件拷贝到init.d下，并重命名为mysql [root@hadoop39 mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysql #赋予可执行权限 [root@hadoop39 mysql]# chmod +x /etc/rc.d/init.d/mysql #删除服务 [root@hadoop39 mysql]# chkconfig --del mysql #添加服务 [root@hadoop39 mysql]# chkconfig --add mysql [root@hadoop39 mysql]# chkconfig --level 345 mysql on 8.安装libaio及安装mysql的初始db [root@hadoop39 mysql]# yum -y install libaio [root@hadoop39 mysql]# sudo su - mysqladmin hadoop39.ruoze:mysqladmin:/usr/local/mysql:> bin/mysqld --defaults-file=/etc/my.cnf --user=mysqladmin --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/ --initialize 在初始化时如果加上 –initial-insecure，则会创建空密码的 root@localhost 账号，否则会创建带密码的 root@localhost 账号，密码直接写在 log-error 日志文件中 （在5.6版本中是放在 ~/.mysql_secret 文件里，更加隐蔽，不熟悉的话可能会无所适从） 9.查看临时密码 hadoop39.ruoze:mysqladmin:/usr/local/mysql/data:>cat hostname.err |grep password 2017-07-22T02:15:29.439671Z 1 [Note] A temporary password is generated for root@localhost: kFCqrXeh2y(0 hadoop39.ruoze:mysqladmin:/usr/local/mysql/data:> 10.启动 /usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf & 11.登录及修改用户密码 hadoop39.ruoze:mysqladmin:/usr/local/mysql/data:>mysql -uroot -p'kFCqrXeh2y(0' mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.11-log Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 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> alter user root@localhost identified by 'root'; Query OK, 0 rows affected (0.05 sec) mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' ; Query OK, 0 rows affected, 1 warning (0.02 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit; Bye 12.重启 hadoop39.ruoze:mysqladmin:/usr/local/mysql:> service mysql restart hadoop39.ruoze:mysqladmin:/usr/local/mysql/data:>mysql -uroot -pruozedata mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.11-log MySQL Community Server (GPL) Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 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>