Mysql数据库8版本单节点离线部署
目录
官网地址：MySQL :: MySQL Community Downloads
12.mysql5.7 以后就没有 my.cnf 了，所以我们创建一个
14.将mysql命令添加到服务，这一步是为了能在任何地方通过用户名和密码登录mysql,操作mysql
注意：自定义安装的mysql需要更改启动脚本中的路径，否则会报错
一、官网下载mysql8
官网地址：MySQL :: MySQL Community Downloads
版本：Mysql 8.0.35
选择linux
二、删除Linux中的mysql（如果有的话），上传安装包
1.先查看mysql是否存
rpm -qa | grep -i mysql如果使用这个命令之后没有出现任何内容，表示没有安装过mysql，如果有出现，则删除。
2.如果存在，那么停止mysql，删除所有的服务
使用如下命令：
find / -name mysql三、解压安装mysql
1.创建mysql存储文件夹
mkdir /yl/data/mysql-8.0.35
赋予权限
chmod -R 755 /yl/data/mysql-8.0.352上传mysql安装包到/yl/packages/
3.解压mysql安装包
tar -xvf mysql-8.0.35-linux-glibc2.28-x86_64.tar4.重命名解压后的文件夹并移动至/yl/app/
mv mysql-8.0.35-linux-glibc2.28-x86_64 /yl/app/mysql-8.0.355.创建用户和用户组
创建mysql组
groupadd mysql
创建mysql用户
useradd -g mysql mysql6.修改工作目录和存储目录属主属组
chown -R mysql.mysql /yl/app/mysql-8.0.35
chown -R mysql.mysql /yl/data/mysql-8.0.357.切换到 bin 目录下
cd /yl/app/mysql-8.0.35/bin8.初始化 mysql 基本信息
在初始化之前提一嘴，Linux中的MySQL默认是区分表名大小写的，如果你是安装的也是MySQL8，那么不区分大小需要在数据库初始化时设置，不然初始化后，在配置文件在设置重启时是会报错的。
进入MySQL的bin目录进行初始化
./mysqld --user=mysql --basedir=/yl/app/mysql-8.0.35 --datadir=/yl/data/mysql-8.0.35 --initialize --lower-case-table-names=1–lower-case-table-names=1 即设置不区分表名大小写，最后面的 tfxddYyyo0>e 为初始化生产的临时密码。
9.获取到临时 mysql 密码
10.将 mysqld 服务添加到系统中并自定义
cp -a /yl/app/mysql-8.0.35/support-files/mysql.server /etc/init.d/mysql
vim /etc/init.d/mysql
...
如图，因我们是自定义安装所以需要修改工作目录和存储目录否则会报找不到响应路径导致无法启动
如需自定义配置文件，则修改207行代码
...
11.授权以及添加mysql服务
授权
chmod +x /etc/init.d/mysql
添加mysql服务
chkconfig --add mysql12.mysql5.7 以后就没有 my.cnf 了，所以我们创建一个
vim /yl/app/mysql-8.0.35/my.cnf[client]
port = 3306
socket =/tmp/mysql.sock
[mysql]
prompt="\u@mysqldb \R:\m:\s [\d]> "
no-auto-rehash
[mysqld]
port = 3306
basedir = /yl/app/mysql-8.0.35
datadir = /yl/data/mysql-8.0.35
socket = /tmp/mysql.sock
log-error = /yl/data/mysql-8.0.35/mysql-error.log
pid-file = /yl/app/mysql-8.0.35/mysqld.pid
log-bin=mysql-bin
binlog-format=ROW
server_id=1
expire_logs_days = 10
max_binlog_size = 100M
skip_name_resolve = 1
default_time_zone = "+8:00"
character-set-server = utf8mb4
collation-server = utf8mb4_general_ci
init_connect='SET NAMES utf8mb4'
lower_case_table_names = 1
#sql_mode = STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = true
open_files_limit = 65535
max_connections = 300
max_connect_errors = 600
back_log = 110
table_open_cache = 600
table_definition_cache = 700
table_open_cache_instances = 64
thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 128M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 20
interactive_timeout = 1800
wait_timeout = 1800
lock_wait_timeout = 3600
tmp_table_size = 64M
max_heap_table_size = 64M
slow_query_log = 1
log_timestamps = SYSTEM
slow_query_log_file = /yl/data/mysql-8.0.35/mysql-slow.log
long_query_time = 5
log_queries_not_using_indexes = 0
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 5000
log_slow_admin_statements = 0
log_slow_slave_statements = 1
server-id = 110
log-bin=mysql-bin
binlog_format = ROW
binlog_row_image = FULL
binlog_expire_logs_seconds = 1209600
master_info_repository = TABLE
relay_log_info_repository = TABLE
log_slave_updates
relay_log_recovery = 1
slave_skip_errors = ddl_exist_errors
innodb_flush_log_at_trx_commit = 1
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 4G
max_binlog_size = 1G
gtid_mode = on
enforce_gtid_consistency = 1
#slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'
# default value is CRC32
#binlog_checksum = 1
# default value is ON
#relay-log-purge = 1
key_buffer_size = 15M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
innodb_thread_concurrency = 0
innodb_buffer_pool_size = 8G
innodb_buffer_pool_instances = 4
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:12M:autoextend
innodb_log_buffer_size = 32M
innodb_log_files_in_group = 3
innodb_log_file_size = 2G
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 4G
#The path where InnoDB creates undo tablespaces
#innodb_undo_directory = /var/lib/mysql/undolog
#The innodb_undo_tablespaces variable is deprecated and is no longer configurable as of MySQL 8.0.14
#innodb_undo_tablespaces = 95
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_sync = 0
innodb_flush_neighbors = 0
innodb_write_io_threads = 2
innodb_read_io_threads = 6
innodb_purge_threads = 1
innodb_page_cleaners = 1
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 20
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_sort_buffer_size = 67108864
innodb_autoinc_lock_mode = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 4G
[mysqldump]
quick
max_allowed_packet = 128Mchmod 644 /yl/app/mysql-8.0.35/my.cnf13.启动mysql服务
service mysql start14.将mysql命令添加到服务，这一步是为了能在任何地方通过用户名和密码登录mysql,操作mysql
ln -s /yl/app/mysql-8.0.35/bin/* /usr/bin15.mysql使用
(1)登录 密码使用之前随机生成的密码
mysql -u root -p(2) 修改管理员密码
alter user root@'localhost' identified by '';
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