1.MySQL 5.7.26 二进制版本安装
1.1 下载安装包至/server/tools[root@centos8 ~]# mkdir /server/tools -p[root@centos8 ~]# cd /server/tools/[root@centos8 tools]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.26-linux-glibc2.12-i686.tar.gz
1.2 解压软件
[root@centos8 tools]# tar -xvf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz
[root@centos8 ~]# mkdir /application
[root@centos8 tools]# mv mysql-5.7.26-linux-glibc2.12-x86_64 /application/mysql
1.3 用户创建+处理原始环境
[root@centos8 tools]# yum remove -y mariadb-connector-c-config-3.1.11-2.el8_3.noarch
[root@centos8 tools]# rpm -qa |grep mariadb
[root@centos8 tools]# useradd -s /sbin/nologin mysql
1.4 设置环境变量
[root@centos8 tools]# vim /etc/profile
export PATH=/application/mysql/bin:$PATH
[root@centos8 tools]# source /etc/profile
[root@centos8 tools]# mysql -V
mysql Ver 14.14 Distrib 5.7.26, for linux-glibc2.12 (x86_64) using EditLine wrapper
1.5 创建数据路径并授权
1.添加一块新磁盘模拟数据盘
2.格式化并挂载磁盘
[root@centos8 ~]# mkfs.xfs /dev/sdb
[root@centos8 ~]# mkdir /data
[root@centos8 ~]# blkid
[root@centos8 ~]# vim /etc/fstab
UUID=0a2a2157-ebec-46df-a4ce-ea14bfd8b71c /data xfs defaults 0 0
[root@centos8 ~]# mount -a
[root@centos8 ~]# df-h
3.授权
[root@centos8 ~]# chown -R mysql:mysql /application/*
[root@centos8 ~]# chown -R mysql:mysql /data/
1.6 初始化数据（创建系统数据）
# 5.6版本 初始化命令 /applition/mysql/scripts/mysql_install_db
# 5.7版本
[root@centos8 ~]# chown -R mysql:mysql /data/
[root@centos8 ~]# mkdir /data/mysql/data -p
[root@centos8 ~]# mysqld --initialize --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data/
说明：
--initialize参数：
1.对与密码复杂度进行定制：12位，4种
2.密码过期时间：180
3.给root@localhost用户设置临时密码
报错：
mysqld：error while loading shared libraries：libaio.so.1:cannot open shared object file: No such file or directory
解决：
[root@centos8 ~]# yum install -y libaio-devel
[root@centos8 ~]# mysqld --initialize-insecure --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data/
说明：
--initalize-insecure参数：
无限制，无临时密码
[root@centos8 data]# \rm -rf /data/mysql/data/*
[root@centos8 ~]# mysqld --initialize-insecure --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data/
1.7 配置文件的准备
cat >/etc/my.cnf <<EOF
[mysqld]
user=mysql
basedir=/application/mysql
datadir=/data/mysql/data
socket=/tmp/mysql.sock
server_id=6
port=3306
[mysql]
socket=/tmp/mysql.sock
EOF
1.8 启动数据库
1. sys-v
[root@centos8 ~]# cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld
[root@centos8 support-files]# service mysqld restart
2. systemd
cat >/etc/sysctemd/system/mysqld.service <<EOF
[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WamtedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/application/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000
EOF
1.9 分析处理MySQL数据库报错
1.查看日志：
/data/mysql/data/主机名.err
[ERROR]上下文
2.可能情况：
/etc/my.cnf 路径不对等
/tmp/mysql.sock文件修改过或删除过
数据目录权限权限不是mysql
参数改错了
2.MySQL 5.7.22 二进制版本安装
#/bin/bash
# 1: 创建数据库安装目录，数据存放目录，日志目录，tmp目录
mkdir -p /data/mysql3307/{data,logs,tmp}
# 2: 下载官网mysql-5.7.22版本安装包
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
# 3: 安装包移动到安装数据库文件路径
mv mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz /data/mysql3307
# 4: 切换到mysql安装路径
cd /data/mysql3307/
# 5: 解压mysql安装包
tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
# 6: 更改mysql文件夹名
mv mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz mysql-5.7.22
# 7: 创建mysql用户
useradd -s /bin/bash mysql
# 8：切换到 /data/mysql3307/mysql-5.7.22目录
cd /data/mysql3307/mysql-5.7.22
# 9：创建mysql配置文件
cat >/data/mysql3307/mysql-5.7.22/my.cnf <<EOF
[client]
port = 3307
socket = /data/mysql3307/tmp/mysql.sock
[mysql]
prompt="\u@mysqldb \R:\m:\s [\d]> "
no-auto-rehash
[mysqld]
user = mysql
port = 3307
basedir = /data/mysql3307/mysql
datadir = /data/mysql3307/data
socket = /data/mysql3307/tmp/mysql.sock
pid-file = /data/mysql3307/data/mysqldb.pid
character-set-server = utf8mb4
skip_name_resolve = 1
skip-slave-start
open_files_limit = 65535
back_log = 1024
max_connections = 5000
max_connect_errors = 1000000
table_open_cache = 1024
table_definition_cache = 1024
table_open_cache_instances = 64
thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 7500
query_cache_size = 0
query_cache_type = 0
interactive_timeout = 600
wait_timeout = 600
tmp_table_size = 32M
max_heap_table_size = 32M
slow_query_log = 1
slow_query_log_file = /data/mysql3307/logs/slow3307.log
log-error = /data/mysql3307/logs/error.log
long_query_time = 0.1
log_queries_not_using_indexes =1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
server-id = 3307203
log-bin = /data/mysql3307/logs/mybinlog
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 1G
max_binlog_size = 1G
expire_logs_days = 15
master_info_repository = TABLE
relay_log_info_repository = TABLE
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
binlog_format = row
binlog_checksum = 1
relay_log_recovery = 1
relay-log-purge = 1
key_buffer_size = 32M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 1G
myisam_repair_threads = 1
lock_wait_timeout = 3600
explicit_defaults_for_timestamp = 1
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
#slave
replicate-wild-do-table=k8_server1_log.%
replicate-wild-do-table=k8_server2_log.%
transaction_isolation = REPEATABLE-READ
#innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 1G
innodb_buffer_pool_instances = 4
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:1G:autoextend
innodb_temp_data_file_path = ibtmp1:12M:autoextend:max:5G
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
innodb_log_file_size = 1G
innodb_log_files_in_group = 2
innodb_max_undo_log_size = 1G
#根据您的服务器IOPS能力适当调整
#一般配普通SSD盘的话，可以调整到 10000 - 20000
#配置高端PCIe SSD卡的话，则可以调整的更高，比如 50000 - 80000
innodb_io_capacity = 3000
innodb_io_capacity_max = 8000
innodb_flush_neighbors = 0
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_purge_threads = 4
innodb_page_cleaners = 4
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksums = 1
innodb_checksum_algorithm = crc32
#innodb_file_format = Barracuda
#innodb_file_format_max = Barracuda
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 4G
internal_tmp_disk_storage_engine = InnoDB
innodb_stats_on_metadata = 0
innodb_status_file = 1
#注意: 开启 innodb_status_output & innodb_status_output_locks 后, 可能会导致log-error文件增长较快
innodb_status_output = 0
innodb_status_output_locks = 0
#performance_schema
performance_schema = 1
performance_schema_instrument = '%=on'
#innodb monitor
innodb_monitor_enable="module_innodb"
innodb_monitor_enable="module_server"
innodb_monitor_enable="module_dml"
innodb_monitor_enable="module_ddl"
innodb_monitor_enable="module_trx"
innodb_monitor_enable="module_os"
innodb_monitor_enable="module_purge"
innodb_monitor_enable="module_log"
innodb_monitor_enable="module_lock"
innodb_monitor_enable="module_buffer"
innodb_monitor_enable="module_index"
innodb_monitor_enable="module_ibuf_system"
innodb_monitor_enable="module_buffer_page"
innodb_monitor_enable="module_adaptive_hash"
sql_mode=NO_ENGINE_SUBSTITUTION
[mysqldump]
quick
max_allowed_packet = 32M
EOF
# 10：给数据库文件夹下所有授权myql管理
chown -R mysql:mysql /data/mysql3307/
# 11：初始化mysql
./bin/mysqld --defaults-file=/data/mysql3307/mysql-5.7.22/my.cnf --initialize --user=mysql --basedir=/data/mysql3307/mysql-5.7.22 --datadir=/data/mysql3307/data
# 12：启动mysql
bin/mysqld --defaults-file=/data/mysql3307/mysql-5.7.22/my.cnf --user=mysql --basedir=/data/mysql3307/mysql-5.7.22 --datadir=/data/mysql3307/data
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