系统：centos7
数据库版本：Percona-Server-8
安装包：二进制包
系统优化：
- 关闭selinux
setenforce 0 sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
- 关闭防火墙
systemctl stop firewalld systemctl disable firewalld
- 安装依赖包
yum -y install libevent
- sysctl.conf 优化：
cat >> /etc/sysctl.conf << EOF fs.aio-max-nr = 1048576 fs.file-max = 681574400 kernel.shmmax = 137438953472 kernel.shmmni = 4096 kernel.sem = 250 32000 100 200 net.ipv4.ip_local_port_range = 9000 65000 net.core.rmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_default = 262144 net.core.wmem_max = 1048586 EOF sysctl -p
- limit 优化：
cat >> /etc/security/limits.conf << EOF * soft nproc 65536 * hard nproc 65536 * soft nofile 65536 * hard nofile 65536 EOF cat >> /etc/security/limits.d/20-nproc.conf << EOF * soft nproc unlimited * hard nproc unlimited EOF cat >> /etc/pam.d/login << EOF session required /lib/security/pam_limits.so session required pam_limits.so EOF cat >> /etc/profile << EOF ulimit -HSn 65535 EOF source /etc/profile
安装mysql8
- 新建系统用户及创建所需文件夹
useradd -M mysql -s /sbin/nologin
mkdir -p /data/mysql/{data,log} /usr/local/mysql/etc
chown -R mysql:mysql /data/mysql
- 下载mysql8安装包
wget https://www.percona.com/downloads/Percona-Server-LATEST/Percona-Server-8.0.15-5/binary/tarball/Percona-Server-8.0.15-5-Linux.x86_64.ssl101.tar.gz
- 安装
tar zxvf Percona-Server-8.0.15-5-Linux.x86_64.ssl101.tar.gz mv Percona-Server-8.0.15-5-Linux.x86_64.ssl101/* /usr/local/mysql/ ln -s /usr/local/mysql /usr/local/Percona-Server-8.0.15-5-Linux.x86_64.ssl101 cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld sed -i 's|conf\=/etc/my.cnf|conf\=/usr/local/mysql/etc/my.cnf|g' /etc/init.d/mysqld sed -i "s|^mysqld_pid_file_path=.*$|mysqld_pid_file_path='/data/mysql/mysql.pid'|g" /etc/init.d/mysqld chmod +x /etc/init.d/mysqld ln -s /usr/local/mysql/bin/mysql /usr/sbin/
- 修改配置
cat > /etc/my.cnf << EOF [client] port = 3306 socket = /tmp/mysql.sock [mysql] prompt=\\u@\\d \\R:\\m> auto_rehash [mysqldump] quick max_allowed_packet = 16M [mysqld] user = mysql port = 3306 wait_timeout = 31536000 interactive_timeout = 31536000 basedir = /usr/local/mysql socket = /tmp/mysql.sock pid_file = /data/mysql/mysql.pid datadir = /data/mysql/data log_bin = /data/mysql/data/bin skip_name_resolve skip_external_locking default_storage_engine = InnoDB slow_query_log = 1 long_query_time = 3 slow_query_log_file = /data/mysql/log/slow.log log_error = /data/mysql/log/mysql_error.log relay_log = /data/mysql/log/slave-relay.log server_id = 8 gtid_mode = on enforce_gtid_consistency = 1 EOF
cat > /usr/local/mysql/etc/my.cnf << EOF [client] port = 3306 socket = /tmp/mysql.sock [mysql] prompt=\\u@\\d \\R:\\m> auto_rehash [mysqldump] quick max_allowed_packet = 64M [mysqld] user = mysql server_id = 8 port = 3306 wait_timeout = 31536000 interactive_timeout = 31536000 socket = /tmp/mysql.sock explicit_defaults_for_timestamp = 1 basedir = /usr/local/mysql datadir = /data/mysql/data pid_file = /data/mysql/mysql.pid performance_schema = 0 log_bin_trust_function_creators = 1 lower_case_table_names = 1 init_connect = 'SET NAMES utf8mb4' #character_set_server = utf8mb4 skip_name_resolve skip_external_locking max_connections = 4000 max_connect_errors = 10000 open_files_limit = 65535 max_allowed_packet = 64M binlog_cache_size = 64K max_heap_table_size = 16M tmp_table_size = 16M read_buffer_size = 128K read_rnd_buffer_size = 256K sort_buffer_size = 256K join_buffer_size = 256K key_buffer_size = 8M thread_cache_size = 9 ####binlog log_bin = /data/mysql/data/bin binlog_format = row log_slave_updates = 1 sync_binlog = 1 expire_logs_days = 5 binlog_checksum = CRC32 slave_allow_batching = 1 master_verify_checksum = 1 slave_sql_verify_checksum = 1 master_info_repository = table relay_log_info_repository = table relay_log_purge = 1 relay_log_recovery = 1 relay_log = /data/mysql/log/slave-relay.log binlog_row_image = minimal binlog_rows_query_log_events = 1 ####other logs long_query_time = 3 slow_query_log = 1 slow_query_log_file = /data/mysql/log/slow.log log_error = /data/mysql/log/mysql_error.log ####master&slave gtid_mode = on enforce_gtid_consistency = 1 ####innodb default_storage_engine = InnoDB innodb_open_files = 4000 innodb_buffer_pool_size = 128m innodb_purge_threads = 4 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 16M innodb_log_files_in_group = 3 innodb_log_file_size = 48M innodb_flush_method = O_DIRECT innodb_data_file_path = ibdata1:12M:autoextend innodb_file_per_table = 1 EOF
- 初始化
/usr/local/mysql/bin/mysqld --initialize-insecure
- 启动、关闭mysql
/usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/etc/my.cnf & service mysqld stop
- 登录服务器并增加用户
/usr/local/mysql/bin/mysql -S /tmp/mysql.sock > ALTER USER 'root'@'localhost' IDENTIFIED BY '123456'; > CREATE USER 'root'@'%' IDENTIFIED BY '123456'; > GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION; > FLUSH PRIVILEGES;
- 修改mysql启动文件并设置开机启动
echo '/usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/etc/my.cnf &' >> /etc/rc.d/rc.local