qt unicode轉gbk_Qt中文編碼和QString類Unicode編碼轉換
阿新 • • 發佈：2020-12-28
mysql多例項部署
下載原始碼包
[root@localhost ~]# wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz
[root@localhost ~]# ls
anaconda-ks.cfg mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz
配置使用者和組並解壓二進位制程式至/usr/local下
[root@localhost ~]# useradd -r -M -s /sbin/nologin mysql [root@localhost ~]# tar xf mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz -C /usr/local/ [root@localhost ~]# cd /usr/local/ [root@localhost local]# ln -s mysql-5.7.31-linux-glibc2.12-x86_64 mysql [root@localhost local]# chown -R mysql.mysql mysql* [root@localhost local]# ll total 0 drwxr-xr-x. 2 root root 6 Aug 12 2018 bin drwxr-xr-x. 2 root root 6 Aug 12 2018 etc drwxr-xr-x. 2 root root 6 Aug 12 2018 games drwxr-xr-x. 2 root root 6 Aug 12 2018 include drwxr-xr-x. 2 root root 6 Aug 12 2018 lib drwxr-xr-x. 2 root root 6 Aug 12 2018 lib64 drwxr-xr-x. 2 root root 6 Aug 12 2018 libexec lrwxrwxrwx. 1 mysql mysql 35 Dec 30 00:15 mysql -> mysql-5.7.31-linux-glibc2.12-x86_64 drwxr-xr-x. 9 mysql mysql 129 Jun 2 2020 mysql-5.7.31-linux-glibc2.12-x86_64 drwxr-xr-x. 2 root root 6 Aug 12 2018 sbin drwxr-xr-x. 5 root root 49 Nov 24 15:23 share drwxr-xr-x. 2 root root 6 Aug 12 2018 src [root@localhost local]# cd [root@localhost ~]# echo 'export PATH=/usr/local/mysql/bin:$PATH' > /etc/profile.d/mysql.sh [root@localhost ~]# source /etc/profile.d/mysql.sh [root@localhost ~]# which mysql /usr/local/mysql/bin/mysql
建立各例項資料存放的目錄
[root@localhost ~]# mkdir -p /opt/data/{3306,3307,3308}
[root@localhost ~]# chown -R mysql.mysql /opt/data/
[root@localhost ~]# ll /opt/data/
total 0
drwxr-xr-x. 2 mysql mysql 6 Dec 30 00:18 3306
drwxr-xr-x. 2 mysql mysql 6 Dec 30 00:18 3307
drwxr-xr-x. 2 mysql mysql 6 Dec 30 00:18 3308
初始化各例項
[root@localhost ~]# yum -y install ncurses-compat-libs //初始化3306例項 [root@localhost ~]# mysqld --initialize --user=mysql --datadir=/opt/data/3306 2020-12-29T16:22:15.588751Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2020-12-29T16:22:16.839052Z 0 [Warning] InnoDB: New log files created, LSN=45790 2020-12-29T16:22:17.030004Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2020-12-29T16:22:17.129770Z 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: 047f4f41-49f2-11eb-abb9-000c29c83ec8. 2020-12-29T16:22:17.130762Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2020-12-29T16:22:17.785473Z 0 [Warning] CA certificate ca.pem is self signed. 2020-12-29T16:22:17.978888Z 1 [Note] A temporary password is generated for root@localhost: LedF2pPoq!?W [root@localhost ~]# echo 'LedF2pPoq!?W' > 3306 //初始化3307例項 [root@localhost ~]# mysqld --initialize --user=mysql --datadir=/opt/data/3307 2020-12-29T16:23:25.830064Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2020-12-29T16:23:27.250395Z 0 [Warning] InnoDB: New log files created, LSN=45790 2020-12-29T16:23:27.549030Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2020-12-29T16:23:27.580248Z 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: 2e7d3284-49f2-11eb-ad63-000c29c83ec8. 2020-12-29T16:23:27.581981Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2020-12-29T16:23:28.343134Z 0 [Warning] CA certificate ca.pem is self signed. 2020-12-29T16:23:28.609117Z 1 [Note] A temporary password is generated for root@localhost: jwqUfujih4,d [root@localhost ~]# echo 'jwqUfujih4,d' > 3307 //初始化3308例項 [root@localhost ~]# mysqld --initialize --user=mysql --datadir=/opt/data/3308 2020-12-29T16:23:50.021554Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2020-12-29T16:23:51.295725Z 0 [Warning] InnoDB: New log files created, LSN=45790 2020-12-29T16:23:51.659822Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2020-12-29T16:23:51.689869Z 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: 3cdc08fa-49f2-11eb-b0a4-000c29c83ec8. 2020-12-29T16:23:51.691009Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2020-12-29T16:23:52.238891Z 0 [Warning] CA certificate ca.pem is self signed. 2020-12-29T16:23:52.375543Z 1 [Note] A temporary password is generated for root@localhost: FkHgIUfM/1Ih [root@localhost ~]# echo 'FkHgIUfM/1Ih' > 3308 [root@localhost ~]# ls 3306 3307 3308 anaconda-ks.cfg mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz
安裝perl
[root@localhost ~]# yum -y install perl
配置配置檔案/etc/my.cnf
[root@localhost ~]# vim /etc/my.cnf [mysqld_multi] mysqld = /usr/local/mysql/bin/mysqld_safe mysqladmin = /usr/local/mysql/bin/mysqladmin [mysqld3306] datadir = /opt/data/3306 port = 3306 socket = /tmp/mysql3306.sock pid-file = /opt/data/3306/mysql_3306.pid log-error=/var/log/3306.log [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
啟動各例項
[root@localhost ~]# mysqld_multi start 3306
[root@localhost ~]# mysqld_multi start 3307
[root@localhost ~]# mysqld_multi start 3308
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
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 *:*
初始化密碼
[root@localhost ~]# ls
3306 3307 3308 anaconda-ks.cfg mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz
//更改3306密碼
[root@localhost ~]# cat 3306
LedF2pPoq!?W
[root@localhost ~]# mysql -uroot -p'LedF2pPoq!?W' -S /tmp/mysql3306.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> quit
Bye
[root@localhost ~]# mysql -uroot -p'123456' -S /tmp/mysql3306.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql> quit
Bye
//更改3307密碼
[root@localhost ~]# cat 3307
jwqUfujih4,d
[root@localhost ~]# mysql -uroot -p'jwqUfujih4,d' -S /tmp/mysql3307.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> quit
Bye
[root@localhost ~]# mysql -uroot -p'123456' -S /tmp/mysql3307.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql> quit
Bye
//更改3308密碼
[root@localhost ~]# cat 3308
FkHgIUfM/1Ih
[root@localhost ~]# mysql -uroot -p'FkHgIUfM/1Ih' -S /tmp/mysql3308.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> quit
Bye
[root@localhost ~]# mysql -uroot -p'123456' -S /tmp/mysql3308.sock
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql> quit
Bye