> ### Centos7编译安装MySQL - [内存不够解决方案](https://blog.csdn.net/qq_27148893/article/details/88936044) ``` [root@localhost /]# yum -y install gcc gcc-c++ ncurses ncurses-devel cmake bison cmake [root@localhost /]# cd /usr/local/ [root@localhost local]# groupadd -r mysql && useradd -r -g mysql -s /sbin/nologin -m mysql [root@localhost local]# mkdir -p /data/mysql [root@localhost local]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-boost-5.7.20.tar.gz [root@localhost local]# tar -axvf mysql-boost-5.7.20.tar.gz [root@localhost local]# cd mysql-5.7.20/ [root@localhost mysql-5.7.20]# cmake . \ -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ -DMYSQL_DATADIR=/data/mysql \ -DWITH_BOOST=./boost \ -DSYSCONFDIR=/etc \ -DWITH_INNOBASE_STORAGE_ENGINE=1 \ -DWITH_PARTITION_STORAGE_ENGINE=1 \ -DWITH_FEDERATED_STORAGE_ENGINE=1 \ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \ -DWITH_MYISAM_STORAGE_ENGINE=1 \ -DENABLED_LOCAL_INFILE=1 \ -DENABLE_DTRACE=0 \ -DDEFAULT_CHARSET=utf8mb4 \ -DDEFAULT_COLLATION=utf8mb4_general_ci \ -DWITH_EMBEDDED_SERVER=1 [root@localhost mysql-5.7.20]# make -j `grep processor /proc/cpuinfo | wc -l` [root@localhost mysql-5.7.20]# make install [root@localhost mysql-5.7.20]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld [root@localhost mysql-5.7.20]# chmod +x /etc/init.d/mysqld [root@localhost mysql-5.7.20]# systemctl enable mysqld [root@localhost mysql-5.7.20]# cat > /etc/my.cnf << EOF [client] port = 3306 socket = /dev/shm/mysql.sock [mysqld] port = 3306 socket = /dev/shm/mysql.sock basedir = /usr/local/mysql datadir = /data/mysql pid-file = /data/mysql/mysql.pid user = mysql bind-address = 0.0.0.0 server-id = 1 init-connect = 'SET NAMES utf8mb4' character-set-server = utf8mb4 #skip-name-resolve #skip-networking back_log = 300 max_connections = 1000 max_connect_errors = 6000 open_files_limit = 65535 table_open_cache = 128 max_allowed_packet = 4M binlog_cache_size = 1M max_heap_table_size = 8M tmp_table_size = 16M read_buffer_size = 2M read_rnd_buffer_size = 8M sort_buffer_size = 8M join_buffer_size = 8M key_buffer_size = 4M thread_cache_size = 8 query_cache_type = 1 query_cache_size = 8M query_cache_limit = 2M ft_min_word_len = 4 log_bin = mysql-bin binlog_format = mixed expire_logs_days = 30 log_error = /data/mysql/mysql-error.log slow_query_log = 1 long_query_time = 1 slow_query_log_file = /data/mysql/mysql-slow.log performance_schema = 0 explicit_defaults_for_timestamp #lower_case_table_names = 1 skip-external-locking default_storage_engine = InnoDB #default-storage-engine = MyISAM innodb_file_per_table = 1 innodb_open_files = 500 innodb_buffer_pool_size = 64M innodb_write_io_threads = 4 innodb_read_io_threads = 4 innodb_thread_concurrency = 0 innodb_purge_threads = 1 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 32M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 bulk_insert_buffer_size = 8M myisam_sort_buffer_size = 8M myisam_max_sort_file_size = 10G myisam_repair_threads = 1 interactive_timeout = 28800 wait_timeout = 28800 [mysqldump] quick max_allowed_packet = 16M [myisamchk] key_buffer_size = 8M sort_buffer_size = 8M read_buffer = 4M write_buffer = 4M EOF [root@localhost mysql-5.7.20]# echo -e '\n\nexport PATH=/usr/local/mysql/bin:$PATH\n' >> /etc/profile && source /etc/profile [root@localhost mysql-5.7.20]# mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql [root@localhost mysql-5.7.20]# systemctl start mysqld [root@localhost mysql-5.7.20]# mysql_secure_installation [root@localhost mysql-5.7.20]# ldconfig |grep mysql [root@localhost mysql-5.7.20]# echo "/usr/local/mysql/lib" > /etc/ld.so.conf.d/mysql.conf [root@localhost mysql-5.7.20]# ldconfig [root@localhost mysql-5.7.20]# ldconfig -v |grep mysql [root@localhost mysql-5.7.20]# firewall-cmd --permanent --add-port=3306/tcp [root@localhost mysql-5.7.20]# firewall-cmd --reload ``` > ### 测试 ``` [root@localhost mysql-5.7.20]# mysql -uroot -p ```  - 允许外部Ip访问 ``` mysql> use mysql; mysql> update user set host = '%' where user ='root'; mysql> flush privileges; ```