[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
[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
[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[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
[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 ....
[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
[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[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[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 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('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
Das obige ist der detaillierte Inhalt vonSo stellen Sie mehrere MySQL-Instanzen bereit. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!
MySQL ändert den Namen der Datentabelle
MySQL erstellt eine gespeicherte Prozedur
Der Unterschied zwischen Mongodb und MySQL
So überprüfen Sie, ob das MySQL-Passwort vergessen wurde
MySQL-Datenbank erstellen
MySQL-Standard-Transaktionsisolationsstufe
Der Unterschied zwischen SQL Server und MySQL
mysqlPasswort vergessen
