mysql5.7.26安装

mkdir -p /application
  995  tar xf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz 
  997  mv mysql-5.7.26-linux-glibc2.12-x86_64 /application/mysql
  998  cd /application/mysql/
  999  ll
vim /etc/profile
export PATH=/application/mysql/bin:$PATH
source /etc/profile
 1000  mysql -V
 1001  rpm -qa|grep mariadb
 1002  yum remove mariadb-libs-5.5.60-1.el7_5.x86_64
 1005  userdel mysql
 1006  useradd -s /sbin/nologin mysql
 1007  id mysql
 加磁盘
 1012  fdisk -l
格式化
 1013  mkfs.xfs /dev/sdb
 1014  mkdir /data
 挂载1031  blkid
 1032  vim /etc/fstab 
UUID=4e31f701-eaa5-4d2f-b634-f9d7f54b2c38 /data xfs defaults 0 0
 1033  mount -a
 1034  df -h
 1035  chown -R mysql.mysql /application/*
 1036  chown -R mysql.mysql /data
 1037  mkdir /data/mysql/data -p
 1038  chown -R mysql.mysql /data
 1039  mysqld --initialize --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data
 1040  
m -rf /data/mysql/data/*
 1041  mysqld --initialize-insecure --user=mysql --basedir=/application/mysql --datadir=/data/mysql/data
 1042  cd /data/mysql/data/
 1043  ll
 1044  cd
 1045  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

 1046  vim /etc/my.cnf
 1047  cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld
 1048  service mysqld start
 1049  mysql
 1050  netstat -lnp|grep 330
 1051  ps -ef|grep 330
 1052  /etc/init.d/mysqld stop
设置密码

mysqladmin -uroot -p password 123

使用systemd管理mysql

cat >/etc/systemd/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]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/application/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000
EOF