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Centos7安装mysql5.7解压版完整教程避免踩坑,可以把数据目录和系统目录分开设置。
1、卸载Centos7默认自带的mariadb数据库,避免冲突
#先查询是否安装,找到已安装的对应mariadb,yum list installed |grep mariadb#列表展示的是mariadb-libs.x86_64 ,执行如下命令进行安装yum remove mariadb-libs.x86_642、下载解压版mysql并安装
下载mysql5.7解压版,我下载的版本mysql-5.7.33-linux-glibc2.12-x86_64.tar.gz
#创建MySQL上传目录mkdir /opt/tools#然后登录Linux服务器,将下载好的安装包上传到服务器的/opt/tools目录。执行解压命令cd /opt/toolstar -zxf /data/tools/mysql-5.7.33-linux-glibc2.12-x86_64.tar.gz#解压后的目录改名mv mysql-5.7.27-linux-glibc2.12-x86_64 mysql#移动mysql到 /usr/local/mysqlmv mysql-5.7.27-linux-glibc2.12-x86_64 /usr/local/mysqlcd /usr/local/mysql#创建用户组和用户 mysqlgroupadd mysqluseradd -r -g mysql mysql#目录授权chgrp -R mysql .chown -R mysql .#创建MySQL存储数据的目录mkdir /data/mysql/datamkdir /data/mysql/share进入bin目录执行初始化cd /usr/local/mysql/bin./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/data/mysql/data/ --lc_messages_dir=/data/mysql/share --lc_messages=en_US
注意:执行完成后输出的内容最后一行是数据库root的密码,一定要先保存下来
进入support-files,修改mysql.server
cd /usr/local/mysql/support-files
#!/bin/sh# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB# This file is public domain and comes with NO WARRANTY of any kind# MySQL daemon start/stop script.# Usually this is put in /etc/init.d (at least on machines SYSV R4 based# systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql.# When this is done the mysql server will be started when the machine is# started and shut down when the systems goes down.# Comments to support chkconfig on RedHat Linux# chkconfig: 2345 64 36# description: A very fast and reliable SQL database engine.# Comments to support LSB init script conventions### BEGIN INIT INFO# Provides: mysql# Required-Start: $local_fs $network $remote_fs# Should-Start: ypbind nscd ldap ntpd xntpd# Required-Stop: $local_fs $network $remote_fs# Default-Start: 2 3 4 5# Default-Stop: 0 1 6# Short-Description: start and stop MySQL# Description: MySQL is a very fast and reliable SQL database engine.### END INIT INFO # If you install MySQL on some other places than /usr/local/mysql, then you# have to do one of the following things for this script to work:## - Run this script from within the MySQL installation directory# - Create a /etc/my.cnf file with the following information:# [mysqld]# basedir=<path-to-mysql-installation-directory># - Add the above to any other configuration file (for example ~/.my.ini)# and copy my_print_defaults to /usr/bin# - Add the path to the mysql-installation-directory to the basedir variable# below.## If you want to affect other MySQL variables, you should make your changes# in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.# If you change base dir, you must also change datadir. These may get# overwritten by settings in the MySQL configuration files.basedir=datadir=/data/mysql/data# Default value, in seconds, afterwhich the script should timeout waiting# for server start. # Value here is overriden by value in my.cnf. # 0 means don't wait at all# Negative numbers mean to wait indefinitelyservice_startup_timeout=900# Lock directory for RedHat / SuSE.lockdir='/var/lock/subsys'lock_file_path="$lockdir/mysql"# The following variables are only set for letting mysql.server find things.# Set some defaultsmysqld_pid_file_path=if test -z "$basedir"then basedir=/usr/local/mysql bindir=/usr/local/mysql/bin if test -z "$datadir" then datadir=/data/mysql/data fi sbindir=/usr/local/mysql/bin libexecdir=/usr/local/mysql/binelse bindir="$basedir/bin" if test -z "$datadir" then datadir="/data/mysql/data" fi sbindir="$basedir/sbin" libexecdir="$basedir/libexec"fi# datadir_set is used to determine if datadir was set (and so should be# *not* set inside of the --basedir= handler.)datadir_set=## Use LSB init script functions for printing messages, if possible#lsb_functions="/lib/lsb/init-functions"if test -f $lsb_functions ; then . $lsb_functionselse log_success_msg() { echo " SUCCESS! $@" } log_failure_msg() { echo " ERROR! $@" }fiPATH="/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin"export PATHmode=$1 # start or stop[ $# -ge 1 ] && shiftother_args="$*" # uncommon, but needed when called from an RPM upgrade action # Expected: "--skip-networking --skip-grant-tables" # They are not checked here, intentionally, as it is the resposibility # of the "spec" file author to give correct arguments only.case `echo "testing\c"`,`echo -n testing` in *c*,-n*) echo_n= echo_c= ;; *c*,*) echo_n=-n echo_c= ;; *) echo_n= echo_c='\c' ;;esacparse_server_arguments() { for arg do case "$arg" in --basedir=*) basedir=`echo "$arg" | sed -e 's/^[^=]*=//'` bindir="$basedir/bin" if test -z "$datadir_set"; then datadir="$basedir/data" fi sbindir="$basedir/sbin" libexecdir="$basedir/libexec" ;; --datadir=*) datadir=`echo "$arg" | sed -e 's/^[^=]*=//'` datadir_set=1;; --pid-file=*) mysqld_pid_file_path=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; esac done}wait_for_pid () { verb="$1" # created | removed pid="$2" # process ID of the program operating on the pid-file pid_file_path="$3" # path to the PID file. i=0 avoid_race_condition="by checking again" while test $i -ne $service_startup_timeout ; do case "$verb" in 'created') # wait for a PID-file to pop into existence. test -s "$pid_file_path" && i='' && break ;; 'removed') # wait for this PID-file to disappear test ! -s "$pid_file_path" && i='' && break ;; *) echo "wait_for_pid () usage: wait_for_pid created|removed pid pid_file_path" exit 1 ;; esac # if server isn't running, then pid-file will never be updated if test -n "$pid"; then if kill -0 "$pid" 2>/dev/null; then : # the server still runs else # The server may have exited between the last pid-file check and now. if test -n "$avoid_race_condition"; then avoid_race_condition="" continue # Check again. fi # there's nothing that will affect the file. log_failure_msg "555555The server quit without updating PID file ($pid_file_path)." return 1 # not waiting any more. fi fi echo $echo_n ".$echo_c" i=`expr $i + 1` sleep 1 done if test -z "$i" ; then log_success_msg return 0 else log_failure_msg return 1 fi}# Get arguments from the my.cnf file,# the only group, which is read from now on is [mysqld]if test -x "$bindir/my_print_defaults"; then print_defaults="$bindir/my_print_defaults"else # Try to find basedir in /etc/my.cnf conf=/etc/my.cnf print_defaults= if test -r $conf then subpat='^[^=]*basedir[^=]*=\(.*\)$' dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf` for d in $dirs do d=`echo $d | sed -e 's/[ ]//g'` if test -x "$d/bin/my_print_defaults" then print_defaults="$d/bin/my_print_defaults" break fi done fi # Hope it's in the PATH ... but I doubt it test -z "$print_defaults" && print_defaults="my_print_defaults"fi## Read defaults file from 'basedir'. If there is no defaults file there# check if it's in the old (depricated) place (datadir) and read it from there#extra_args=""if test -r "$basedir/my.cnf"then extra_args="-e $basedir/my.cnf"fiparse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server`## Set pid file if not given#if test -z "$mysqld_pid_file_path"then mysqld_pid_file_path=$datadir/`hostname`.pidelse case "$mysqld_pid_file_path" in /* ) ;; * ) mysqld_pid_file_path="$datadir/$mysqld_pid_file_path" ;; esacficase "$mode" in 'start') # Start daemon # Safeguard (relative paths, core dumps..) cd $basedir # 重启sql echo $echo_n "Starting MySQL" if test -x $bindir/mysqld_safe then # Give extra arguments to mysqld with the my.cnf file. This script # may be overwritten at next upgrade. $bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null & wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$? # Make lock for RedHat / SuSE if test -w "$lockdir" then touch "$lock_file_path" fi exit $return_value else log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)" fi ;; 'stop') # Stop daemon. We use a signal here to avoid having to know the # root password. if test -s "$mysqld_pid_file_path" then # signal mysqld_safe that it needs to stop touch "$mysqld_pid_file_path.shutdown" mysqld_pid=`cat "$mysqld_pid_file_path"` if (kill -0 $mysqld_pid 2>/dev/null) then echo $echo_n "Shutting down MySQL" kill $mysqld_pid # mysqld should remove the pid file when it exits, so wait for it. wait_for_pid removed "$mysqld_pid" "$mysqld_pid_file_path"; return_value=$? else log_failure_msg "MySQL server process #$mysqld_pid is not running!" rm "$mysqld_pid_file_path" fi # Delete lock for RedHat / SuSE if test -f "$lock_file_path" then rm -f "$lock_file_path" fi exit $return_value else log_failure_msg "MySQL server PID file could not be found!" fi ;; 'restart') # Stop the service and regardless of whether it was # running or not, start it again. if $0 stop $other_args; then $0 start $other_args else log_failure_msg "Failed to stop running server, so refusing to try to start." exit 1 fi ;; 'reload'|'force-reload') if test -s "$mysqld_pid_file_path" ; then read mysqld_pid < "$mysqld_pid_file_path" kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL" touch "$mysqld_pid_file_path" else log_failure_msg "MySQL PID file could not be found!" exit 1 fi ;; 'status') # First, check to see if pid file exists if test -s "$mysqld_pid_file_path" ; then read mysqld_pid < "$mysqld_pid_file_path" if kill -0 $mysqld_pid 2>/dev/null ; then log_success_msg "MySQL running ($mysqld_pid)" exit 0 else log_failure_msg "MySQL is not running, but PID file exists" exit 1 fi else # Try to find appropriate mysqld process mysqld_pid=`pidof $libexecdir/mysqld` # test if multiple pids exist pid_count=`echo $mysqld_pid | wc -w` if test $pid_count -gt 1 ; then log_failure_msg "Multiple MySQL running but PID file could not be found ($mysqld_pid)" exit 5 elif test -z $mysqld_pid ; then if test -f "$lock_file_path" ; then log_failure_msg "MySQL is not running, but lock file ($lock_file_path) exists" exit 2 fi log_failure_msg "MySQL is not running" exit 3 else log_failure_msg "MySQL is running but PID file could not be found" exit 4 fi fi ;; *) # usage basename=`basename "$0"` echo "Usage: $basename {start|stop|restart|reload|force-reload|status} [ MySQL server options ]" exit 1 ;;esacexit 0
注意:修改mysql.server 文件里面数据目录为 /data/mysql/data/ 一定要正确设置
#复制mysql启动文件到服务文件夹cp mysql.server /etc/init.d/mysql#通过服务命令启动mysqlservice mysql start#输出 success 表示启动成功#设置开机自启/sbin/chkconfig mysql onsystemctl enable mysql#查看自启动配置/sbin/chkconfig --list
小技巧:添加 mysql 软连接,方面在任何目录执行MySQL命令
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
说明:如果需要额外配置参数,默认没有/etc/my.cnf 文件内容如下
vim /etc/my.cnf
比如需要新增大小写不敏感配置,其余配置可根据业务需要进行配置
select @@lower_case_table_names;
[mysqld]lower_case_table_names = 1
然后保存后重启mysql服务
service mysql stopservice mysql start
3、配置mysql
mysql -u root -p#输入初始化的密码#修改密码set password=password(“12345678”);#设置任意IP都能通过root用户访问该数据库GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '12345678' WITH GRANT OPTION;#刷新权限flush privileges;#重启mysqlservice mysql restart#设置防火墙firewall-cmd --zone=public --add-port=3306/tcp --permanent systemctl restart firewalld4、mysql客户端访问
然后使用本地MySQL客户端访问,确认是否可以正常登录。
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