mysql多实例部署实例教程

2024-09-29 19:52:49

mysql多实例部署

软件下载

[root@lnh ~]# rpm -qa |grep mysql
[root@lnh ~]# ss -antl
State    Recv-Q   Send-Q     Local Address:Port      Peer Address:Port   Process
LISTEN   0        128              0.0.0.0:22             0.0.0.0:*
LISTEN   0        128                 [::]:22                [::]:*
//验证一下是否有mysql
[root@lnh ~]# cd /usr/src/
[root@lnh src]# wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
--2022-07-31 14:25:22--  https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
Resolving downloads.mysql.com (downloads.mysql.com)... 23.10.6.175, 2600:1405:1800:19c::2e31, 2600:1405:1800:184::2e31
Connecting to downloads.mysql.com (downloads.mysql.com)|23.10.6.175|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz [following]
--2022-07-31 14:25:23--  https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
Resolving cdn.mysql.com (cdn.mysql.com)... 23.212.157.5
Connecting to cdn.mysql.com (cdn.mysql.com)|23.212.157.5|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 674830866 (644M) [application/x-tar-gz]
Saving to: ‘mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz'

mysql-5.7.38-linux-g 100%[=====================>] 643.57M  1.88MB/s    in 8m 54s  

2022-07-31 14:34:17 (1.21 MB/s) - ‘mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz' saved [674830866/674830866]
//在www.mysql.com里面进行复制下载地址
[root@lnh src]# ls
debug  kernels  mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz

配置用户并解压二进制程序至/usr/local下

[root@lnh src]# useradd -r -M -s /sbin/nologin mysql
[root@lnh src]# id mysql
uid=993(mysql) gid=990(mysql) groups=990(mysql)
[root@lnh src]# tar -xf mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@lnh src]# cd /usr/local/
[root@lnh local]# ll    //查看解压的东西
total 0
drwxr-xr-x. 14 root root 164 Jul 21 21:32 apache
drwxr-xr-x.  6 root root  58 Jul 21 21:12 apr
drwxr-xr-x.  5 root root  43 Jul 21 21:17 apr-util
drwxr-xr-x.  2 root root   6 May 19  2020 bin
drwxr-xr-x.  2 root root   6 May 19  2020 etc
drwxr-xr-x.  2 root root   6 May 19  2020 games
drwxr-xr-x.  2 root root   6 May 19  2020 include
drwxr-xr-x.  2 root root   6 May 19  2020 lib
drwxr-xr-x.  3 root root  17 Jul 19 16:13 lib64
drwxr-xr-x.  2 root root   6 May 19  2020 libexec
drwxr-xr-x.  9 root root 129 Jul 31 14:56 mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x.  2 root root   6 May 19  2020 sbin
drwxr-xr-x.  5 root root  49 Jul 19 16:13 share
drwxr-xr-x.  5 root root 145 Jul 21 21:19 src
[root@lnh local]# ln -sv mysql-5.7.38-linux-glibc2.12-x86_64 mysql     //做一个软链接              //-v是将结果打印出来
'mysql' -> 'mysql-5.7.38-linux-glibc2.12-x86_64'
[root@lnh local]# ll   //查看
total 0
drwxr-xr-x. 14 root root 164 Jul 21 21:32 apache
drwxr-xr-x.  6 root root  58 Jul 21 21:12 apr
drwxr-xr-x.  5 root root  43 Jul 21 21:17 apr-util
drwxr-xr-x.  2 root root   6 May 19  2020 bin
drwxr-xr-x.  2 root root   6 May 19  2020 etc
drwxr-xr-x.  2 root root   6 May 19  2020 games
drwxr-xr-x.  2 root root   6 May 19  2020 include
drwxr-xr-x.  2 root root   6 May 19  2020 lib
drwxr-xr-x.  3 root root  17 Jul 19 16:13 lib64
drwxr-xr-x.  2 root root   6 May 19  2020 libexec
lrwxrwxrwx.  1 root root  35 Jul 31 14:58 mysql -> mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x.  9 root root 129 Jul 31 14:56 mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x.  2 root root   6 May 19  2020 sbin
drwxr-xr-x.  5 root root  49 Jul 19 16:13 share
drwxr-xr-x.  5 root root 145 Jul 21 21:19 src
[root@lnh local]# chown -R mysql.mysql mysql*  //将软链接的属主属组改成mysql的
[root@lnh local]# ll
total 0
drwxr-xr-x. 14 root  root  164 Jul 21 21:32 apache
drwxr-xr-x.  6 root  root   58 Jul 21 21:12 apr
drwxr-xr-x.  5 root  root   43 Jul 21 21:17 apr-util
drwxr-xr-x.  2 root  root    6 May 19  2020 bin
drwxr-xr-x.  2 root  root    6 May 19  2020 etc
drwxr-xr-x.  2 root  root    6 May 19  2020 games
drwxr-xr-x.  2 root  root    6 May 19  2020 include
drwxr-xr-x.  2 root  root    6 May 19  2020 lib
drwxr-xr-x.  3 root  root   17 Jul 19 16:13 lib64
drwxr-xr-x.  2 root  root    6 May 19  2020 libexec
lrwxrwxrwx.  1 mysql mysql  35 Jul 31 14:58 mysql -> mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x.  9 mysql mysql 129 Jul 31 14:56 mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x.  2 root  root    6 May 19  2020 sbin
drwxr-xr-x.  5 root  root   49 Jul 19 16:13 share
drwxr-xr-x.  5 root  root  145 Jul 21 21:19 src
[root@lnh local]# ls  //编译三部曲已经完成
apache    bin    include  libexec                              sbin
apr       etc    lib      mysql                                share
apr-util  games  lib64    mysql-5.7.38-linux-glibc2.12-x86_64  src
[root@lnh local]# cd mysql
[root@lnh mysql]# ls
bin  docs  include  lib  LICENSE  man  README  share  support-files
[root@lnh mysql]# echo 'export PATH=$PATH:/usr/local/mysql/bin' > /etc/profile.d/mysql.sh
//配置环境变量
[root@lnh mysql]# source /etc/profile.d/mysql.sh
//使环境生效
[root@lnh mysql]# ln -sv /usr/local/mysql/include/ /usr/include/mysql
'/usr/include/mysql' -> '/usr/local/mysql/include/'
//做include的头文件让系统可以识别
[root@lnh mysql]# chown -R mysql.mysql /usr/include/mysql
//将软链接的属主属组改成mysql的
[root@lnh mysql]# ll -d /usr/include/mysql/
drwxr-xr-x. 3 mysql mysql 4096 Jul 31 14:56 /usr/include/mysql/
[root@lnh mysql]# vim /etc/ld.so.conf.d/mysql.conf
[root@lnh mysql]# cat /etc/ld.so.conf.d/mysql.conf
/usr/local/mysql/lib
//配置lib
[root@lnh mysql]# ldconfig
//刷新配置
[root@lnh mysql]# vim /etc/man_db.conf
#MANDATORY_MANPATH                      /usr/src/pvm3/man
#
MANDATORY_MANPATH                       /usr/man
MANDATORY_MANPATH                       /usr/share/man
MANDATORY_MANPATH                       /usr/local/share/man
MANDATORY_MANPATH                       /usr/local/mysql/man//添加这一行

创建各实例数据存放的目录

[root@lnh ~]# mkdir -p /opt/data/{3306,3307,3308}  //创建存放目录
[root@lnh ~]# chown -R mysql.mysql /opt/data/
[root@lnh ~]# ll -d /opt/data/
drwxr-xr-x. 5 mysql mysql 42 Jul 31 15:24 /opt/data/
//修改其所属主所属组
[root@lnh ~]# tree /opt/data/
/opt/data/
├── 3306
├── 3307
└── 3308

3 directories, 0 files
//查看其结构

初始化各实例

[root@lnh ~]# mysqld --initialize --user mysql --datadir /opt/data/3306 //初始化实例   --user指定用户 --datadir指定数据目录
2022-07-31T07:29:37.154689Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-31T07:29:37.346729Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-31T07:29:37.389866Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-31T07:29:37.450981Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 88389665-10a2-11ed-9840-000c2905f428.
2022-07-31T07:29:37.452192Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-31T07:29:37.758320Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:29:37.758378Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:29:37.759177Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-31T07:29:37.780720Z 1 [Note] A temporary password is generated for root@localhost: AqldE*a:O8FR
[root@lnh ~]# echo 'AqldE*a:O8FR' > 3306
[root@lnh ~]# cat 3306
AqldE*a:O8FR
//将这个格式化的随机密码生成到一个文件里面
[root@lnh ~]# mysqld --initialize --user mysql --datadir /opt/data/3307   //格式化3307
2022-07-31T07:33:29.214978Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-31T07:33:29.491805Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-31T07:33:29.524728Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-31T07:33:29.598226Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 12977170-10a3-11ed-9d3d-000c2905f428.
2022-07-31T07:33:29.599323Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-31T07:33:29.932320Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:33:29.932367Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:33:29.932766Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-31T07:33:30.095306Z 1 [Note] A temporary password is generated for root@localhost: PAJBo+Gxg19I
[root@lnh ~]# echo ' PAJBo+Gxg19I' > 3307
[root@lnh ~]# cat 3307
 PAJBo+Gxg19I
[root@lnh ~]# mysqld --initialize --user mysql --datadir /opt/data/3308   //格式化3308
2022-07-31T07:34:23.861697Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-31T07:34:24.082852Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-31T07:34:24.112764Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-31T07:34:24.173299Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 331ef070-10a3-11ed-a122-000c2905f428.
2022-07-31T07:34:24.175009Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-31T07:34:24.374707Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:34:24.374737Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-31T07:34:24.375103Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-31T07:34:24.471521Z 1 [Note] A temporary password is generated for root@localhost: =w&lnU)d-7kK
[root@lnh ~]# echo ' =w&lnU)d-7kK' > 3308
[root@lnh ~]# cat 3308
 =w&lnU)d-7kK
[root@lnh ~]# ls
3306  3307  3308  anaconda-ks.cfg

安装perl

[root@lnh ~]# dnf -y install perl
Last metadata expiration check: 1:24:50 ago on Sun 31 Jul 2022 02:13:54 PM CST.
Dependencies resolved.
===================================================================================
 Package                      Arch   Version                       Repo       Size
===================================================================================
Installing:
 perl                         x86_64 4:5.26.3-420.el8              AppStream  73 k
Installing dependencies:
 perl-Algorithm-Diff          noarch 1.1903-9.el8                  base       52 k
 perl-Archive-Tar             noarch 2.30-1.el8                    base       79 k
 perl-Archive-Zip             noarch 1.60-3.el8                    AppStream 108 k
 perl-Attribute-Handlers      noarch 0.99-420.el8                  AppStream  89 k
 perl-B-Debug                 noarch 1.26-2.el8                    AppStream  26 k
 perl-CPAN                    noarch 2.18-397.el8                  AppStream 554 k
 perl-CPAN-Meta               noarch 2.150010-396.el8              AppStream 191 k
 perl-CPAN-Meta-Requirements  noarch 2.140-396.el8                 AppStream  37 k
 perl-CPAN-Meta-YAML          noarch 0.018-397.el8                 AppStream  34 k
 perl-Compress-Bzip2          x86_64 2.26-6.el8                    AppStream  72 k
 perl-Compress-Raw-Bzip2      x86_64 2.081-1.el8                   base       40 k
 perl-Compress-Raw-Zlib       x86_64 2.081-1.el8                   base       68 k
 perl-Config-Perl-V           noarch 0.30-1.el8                    AppStream  22 k
 perl-DB_File                 x86_64 1.842-1.el8                   AppStream  83 k
 perl-Data-OptList            noarch 0.110-6.el8                   AppStream  31 k
 perl-Data-Section            noarch 0.200007-3.el8                AppStream  30 k
 perl-Devel-PPPort            x86_64 3.36-5.el8                    AppStream 118 k
 perl-Devel-Peek              x86_64 1.26-420.el8                  AppStream  94 k
 perl-Devel-SelfStubber       noarch 1.06-420.el8                  AppStream  76 k
 perl-Devel-Size              x86_64 0.81-2.el8                    AppStream  34 k
 perl-Digest-SHA              x86_64 1:6.02-1.el8                  AppStream  66 k
 perl-Encode-devel            x86_64 4:2.97-3.el8                  AppStream  39 k
 perl-Env                     noarch 1.04-395.el8                  AppStream  21 k
 perl-ExtUtils-CBuilder       noarch 1:0.280230-2.el8              AppStream  48 k
 perl-ExtUtils-Command        noarch 1:7.34-1.el8                  AppStream  19 k
 perl-ExtUtils-Embed          noarch 1.34-420.el8                  AppStream  79 k
....

配置配置文件/etc/my.cnf

[root@lnh ~]# vim /etc/my.cnf
[root@lnh ~]# cat /etc/my.cnf
[mysqld_multi]  //程序命令
mysqld = /usr/local/mysql/bin/mysqld_safe //命令执行的路径
mysqladmin = /usr/local/mysql/bin/mysqladmin //命令执行的路径

[mysqld3306]
datadir = /opt/data/3306   //数据目录
port = 3306  //端口
socket = /tmp/mysql3306.sock  //套接字
pid-file = /opt/data/3306/mysql_3306.pid   //pid进程文件
log-error=/var/log/3306.log   //错误日志

[mysqld3307]
datadir = /opt/data/3307
port = 3307
socket = /tmp/mysql3307.sock
pid-file = /opt/data/3307/mysql_3307.pid
log-error=/var/log/3307.log

[mysqld3308]
datadir = /opt/data/3308
port = 3308
socket = /tmp/mysql3308.sock
pid-file = /opt/data/3308/mysql_3308.pid
log-error=/var/log/3308.log

启动各实例

[root@lnh ~]# mysqld_multi start 3306
[root@lnh ~]# mysqld_multi start 3307
[root@lnh ~]# mysqld_multi start 3308
[root@lnh ~]# ss -antl
State    Recv-Q   Send-Q     Local Address:Port      Peer Address:Port   Process
LISTEN   0        128              0.0.0.0:22             0.0.0.0:*
LISTEN   0        128                 [::]:22                [::]:*
LISTEN   0        80                     *:3306                 *:*
LISTEN   0        80                     *:3307                 *:*
LISTEN   0        80                     *:3308                 *:*
//这种方式启动不建议
[root@lnh ~]# mysqld_multi stop 3308
[root@lnh ~]# ss -antl
State    Recv-Q   Send-Q     Local Address:Port      Peer Address:Port   Process
LISTEN   0        128              0.0.0.0:22             0.0.0.0:*
LISTEN   0        128                 [::]:22                [::]:*
LISTEN   0        80                     *:3306                 *:*
LISTEN   0        80                     *:3307                 *:*
LISTEN   0        80                     *:3308                 *:*
//可以发现这种方式启动程序后关闭不了
[root@lnh ~]# ps -ef |grep 3306
root       71742       1  0 15:49 pts/1    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/opt/data/3306 --port=3306 --socket=/tmp/mysql3306.sock --pid-file=/opt/data/3306/mysql_3306.pid --log-error=/var/log/3306.log
mysql      71878   71742  0 15:49 pts/1    00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/opt/data/3306 --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/log/3306.log --pid-file=/opt/data/3306/mysql_3306.pid --socket=/tmp/mysql3306.sock --port=3306
root       72257   66880  0 15:53 pts/1    00:00:00 grep --color=auto 3306
//查看3306进程
[root@lnh ~]# ps -ef |grep 3306 |grep -v grep
root       71742       1  0 15:49 pts/1    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/opt/data/3306 --port=3306 --socket=/tmp/mysql3306.sock --pid-file=/opt/data/3306/mysql_3306.pid --log-error=/var/log/3306.log
mysql      71878   71742  0 15:49 pts/1    00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/opt/data/3306 --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/log/3306.log --pid-file=/opt/data/3306/mysql_3306.pid --socket=/tmp/mysql3306.sock --port=3306
//取反
[root@lnh ~]# ps -ef |grep 3306 |grep -v grep |awk '{print$2}'
71742
71878
//取出端口号
[root@lnh ~]# ps -ef |grep 3306 |grep -v grep |awk '{print$2}'|xargs kill -9
//xargs将前面的结果交给后面的来处理
//杀死了端口号,相当于这个命令可以控制服务停止
[root@lnh ~]# ps -ef |grep 3307 |grep -v grep |awk '{print$2}'|xargs kill -9
[root@lnh ~]# ps -ef |grep 3308 |grep -v grep |awk '{print$2}'|xargs kill -9
[root@lnh ~]# ss -antl
State    Recv-Q   Send-Q     Local Address:Port      Peer Address:Port   Process
LISTEN   0        128              0.0.0.0:22             0.0.0.0:*
LISTEN   0        128                 [::]:22                [::]:*
//端口号都被杀死

加入system服务里面

[root@lnh system]# cd
[root@lnh ~]# cd /usr/lib/systemd/system
[root@lnh system]# cp sshd.service 3306.service
[root@lnh system]# cp sshd.service 3307.service
[root@lnh system]# cp sshd.service 3308.service
[root@lnh system]# vim 3306.service
[Unit]
Description=3306 server daemon
After=network.target sshd-keygen.target

[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3306 //开启的位置
ExecStop=ps -ef |grep 3306 |grep -v grep |awk '{print$2}'|xargs kill -9   //关闭的命令
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target
[root@lnh system]# cp 3306.service 3307.service
cp: overwrite '3307.service'? y
[root@lnh system]# vim 3307.service
[Unit]
Description=3307 server daemon
After=network.target sshd-keygen.target

[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3307
ExecStop=ps -ef |grep 3307 |grep -v grep |awk '{print$2}'|xargs kill -9
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target
//快捷键 :% s/6/7/g 直接将6变成7
[root@lnh system]# cp 3306.service 3308.service
cp: overwrite '3308.service'? y
[root@lnh system]# vim 3308.service
[Unit]
Description=3308 server daemon
After=network.target sshd-keygen.target

[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3308
ExecStop=ps -ef |grep 3308 |grep -v grep |awk '{print$2}'|xargs kill -9
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target
//快捷键 :% s/6/8/g 直接将6变成8
[root@lnh system]# systemctl daemon-reload
//加载一下
[root@lnh system]# systemctl stop firewalld
[root@lnh system]# systemctl disable firewalld.service
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@lnh system]# vim /etc/selinux/config
SELINUX=disabled   //修改
[root@lnh system]# setenforce 0
//关闭防火墙
[root@lnh system]# systemctl start 3306
[root@lnh system]# systemctl start 3307
[root@lnh system]# systemctl start 3308
[root@lnh system]# ss -antl
State    Recv-Q   Send-Q     Local Address:Port      Peer Address:Port   Process
LISTEN   0        128              0.0.0.0:22             0.0.0.0:*
LISTEN   0        128                 [::]:22                [::]:*
LISTEN   0        80                     *:3306                 *:*
LISTEN   0        80                     *:3307                 *:*
LISTEN   0        80                     *:3308                 *:*
//可以发现全部启动成功
//如果启动失败就在这个里面journalctl -xe找出错误点

初始化密码

[root@lnh ~]# cat 3306
AqldE*a:O8FR   //查看之前放置的密码
[root@lnh ~]# mysql -uroot -p'AqldE*a:O8FR' -S  /tmp/mysql3306.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.38

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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set password=password('3306');   //修改密码
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> quit
Bye
[root@lnh ~]# mysql -uroot -p'3306' -S  /tmp/mysql3306.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.38 MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>
//登录成功
[root@lnh ~]# cat 3307
 PAJBo+Gxg19I
[root@lnh ~]# mysql -uroot -p'PAJBo+Gxg19I' -S  /tmp/mysql3307.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.38

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set password=password('3307');   //修改密码
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> quit
Bye
[root@lnh ~]# mysql -uroot -p'3307' -S  /tmp/mysql3307.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.38 MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>
//登录成功
[root@lnh ~]# cat 3308
 =w&lnU)d-7kK
[root@lnh ~]# mysql -uroot -p'=w&lnU)d-7kK' -S  /tmp/mysql3308.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.38

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set password=password('3308');   //修改密码
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> quit
Bye
[root@lnh ~]# mysql -uroot -p'3308' -S  /tmp/mysql3308.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.38 MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>
//登录成功

报错解决

报错1：
[root@lnh ~]# mysql -uroot -p'AqldE*a:O8FR'
mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory
//没有这个包
解决：
[root@lnh ~]# dnf provides libncurses.so.5
Last metadata expiration check: 2:39:05 ago on Sun 31 Jul 2022 02:13:54 PM CST.
ncurses-compat-libs-6.1-9.20180224.el8.i686 : Ncurses compatibility libraries
Repo : base
Matched from:
Provide : libncurses.so.5

[root@lnh ~]# dnf -y install ncurses-compat-libs-6.1-9.20180224.el8.
报错2：
[root@lnh ~]# mysql -uroot -p'AqldE*a:O8FR'
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) //没有访问到套接字
解决：[root@lnh ~]# mysql -uroot -p'AqldE*a:O8FR' -S /tmp/mysql3306.sock

到此这篇关于mysql多实例部署的文章就介绍到这了,更多相关mysql多实例部署内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！

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