mysql数据库基本操作：
root@m \~# tar -xf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz 解压压缩包
root@m \~# ls
anaconda-ks.cfg
mysql-5.7.44-linux-glibc2.12-x86_64
mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz
root@m \~# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql
root@m \~# rm -rf /etc/my.cnf
root@m \~# mkdir /usr/local/mysql/mysql-files
root@m \~# useradd -r -s /sbin/nologin mysql
root@m \~# chown mysql:mysql /usr/local/mysql/mysql-files/
root@m \~# chmod 750 /usr/local/mysql/mysql-files/ 授予权限
root@m \~# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ 进行初始化
2024-08-15T02:37:51.714490Z 0 Warning TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2024-08-15T02:37:51.883374Z 0 Warning InnoDB: New log files created, LSN=45790
2024-08-15T02:37:51.927026Z 0 Warning InnoDB: Creating foreign key constraint system tables.
2024-08-15T02:37:51.985501Z 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: 5e50091b-5aaf-11ef-903e-000c2962cb99.
2024-08-15T02:37:51.986327Z 0 Warning Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2024-08-15T02:37:53.342567Z 0 Warning A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2024-08-15T02:37:53.342586Z 0 Warning A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2024-08-15T02:37:53.344783Z 0 Warning CA certificate ca.pem is self signed.
2024-08-15T02:37:53.842790Z 1 Note A temporary password is generated for root@localhost: UW2j.oFipqq= 获得原始密码
root@m \~# ls
anaconda-ks.cfg
mysql-5.7.44-linux-glibc2.12-x86_64
mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz
root@m \~# ls /usr/local/mysql/
bin docs lib man README support-files
data include LICENSE mysql-files share
root@m \~# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57
root@m \~# service mysql57 start 启动mysql
Starting MySQL.Logging to '/usr/local/mysql/data/m.sql.err'.
SUCCESS!
修改配置文件
root@m \~# vim /usr/local/mysql/my.cnf 主服务器的配置文件
mysqld
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
port=3306
log-error=/usr/local/mysql/data/db01-master.err
log-bin=/usr/local/mysql/data/binlog
server-id=10
character_set_server=utf8mb4
root@m \~# /usr/local/mysql/bin/mysql -p 开启mysql
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.44
Copyright (c) 2000, 2023, 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> alter user 'root'@'localhost' identified by 'root'; 修改数据库账号
Query OK, 0 rows affected (0.00 sec)
mysql> create user 'chz'@'%' identified by 'chz'; 创建可以连接外部的账号
Query OK, 0 rows affected (0.00 sec)
mysql> grant all on *.* to 'chz'@'%'; 授予权限
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> create database if not exists test charset utf8mb4
-> ;
Query OK, 1 row affected (0.00 sec)
mysql> use test
Database changed
mysql> create table user(id int primary key auto_increment,username varchar(45) not null,password varchar(45) not null);
Query OK, 0 rows affected (0.00 sec)
mysql> insert into user (username,password)values("aaa","aaa");
Query OK, 1 row affected (0.01 sec)
mysql> select * from user
-> ;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | aaa | aaa |
+----+----------+----------+
1 row in set (0.00 sec)
mysql>
mysql> select host ,user from mysql.user;
+-----------+---------------+
| host | user |
+-----------+---------------+
| % | chz |
| % | slave0 |
| localhost | mysql.session |
| localhost | mysql.sys |
| localhost | root |
+-----------+---------------+
5 rows in set (0.00 sec)
mysql> update mysql.user set host='%' where user='root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges;
交互
在python（写成脚本执行）
import pymysql
conn=pymysql.connect(host="192.168.2.50",port=3306,database="test",user="root",password="root");
cursor=conn.cursor()
cursor.execute("create user 'slave2'@'%' identified by 'slave2'")
cursor.execute("grant replication slave on *.* to 'slave2'@'%'")
cursor.execute("flush privileges")
cursor.execute("flush tables with read lock")
cursor.execute("show master status")
print(cursor.fetchall())
isOk=input("slave server ok? y/n")
if isOK=='y':
cursor.execute("unlock tables")
cursor.execute("flush tables with read lock") 锁表
cursor.execute("unlock tables") 取消锁表
mycat
root@mycat \~# ls
anaconda-ks.cfg jre-8u191-linux-x64.tar.gz
jdk-8u192-linux-x64.tar.gz Mycat-server-1.6.5-release-20180122220033-linux.tar.gz
root@mycat \~# tar -xf jdk-8u192-linux-x64.tar.gz
root@mycat \~# tar -xf Mycat-server-1.6.5-release-20180122220033-linux.tar.gz
root@mycat \~# ls
anaconda-ks.cfg jre-8u191-linux-x64.tar.gz
jdk1.8.0_192 mycat
jdk-8u192-linux-x64.tar.gz Mycat-server-1.6.5-release-20180122220033-linux.tar.gz
root@mycat \~# cp -r jdk1.8.0_192/ /usr/local/jdk
root@mycat \~# cp -r mycat/ /usr/local/
查看并且配置jdk文件
root@mycat \~# sed -i '$aexport JAVA_HOME=/usr/local/jdk' /etc/profile
root@mycat \~# source /etc/profile
root@mycat \~# $JAVA_HOME
-bash: /usr/local/jdk: 是一个目录
root@mycat \~# sed -i 'aexport PATH=PATH:$JAVA_HOME/bin' /etc/profile
root@mycat \~# source /etc/profile
root@mycat \~# $PATH
-bash: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/jdk/BIN:/usr/local/jdk/bin: 没有那个文件或目录
root@mycat \~# java -version
java version "1.8.0_192"
Java(TM) SE Runtime Environment (build 1.8.0_192-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.192-b12, mixed mode)
root@mycat \~# javac -version
javac 1.8.0_192
root@mycat \~# /usr/local/mycat/bin/mycat console 启动mycat
Running Mycat-server...
wrapper | --> Wrapper Started as Console
wrapper | Launching a JVM...
jvm 1 | Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=64M; support was removed in 8.0
jvm 1 | Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
jvm 1 | Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
jvm 1 |
jvm 1 | log4j:WARN No appenders could be found for logger (io.mycat.memory.MyCatMemory).
jvm 1 | log4j:WARN Please initialize the log4j system properly.
jvm 1 | log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
jvm 1 | MyCAT Server startup successfully. see logs in logs/mycat.log 启动成功
root@mycat \~# vim /usr/local/mycat/conf/server.xml
root@mycat \~# vim /usr/local/mycat/conf/server.xml
数据库的账号，数据库的密码，数据库
注释掉
root@mycat \~# vim /usr/local/mycat/conf/schema.xml
删除前面的，然后修改
root@mycat \~# /usr/local/mycat/bin/mycat start
Starting Mycat-server...
root@mycat \~# netstat -lnput | grep 8066
测试连接
root@client \~# cd mysql-8.0.33-linuxglibc2.12-x86_64/
root@client mysql-8.0.33-linuxglibc2.12-x86_64# cd bin/
root@client bin# ./mysql -h10.1.1.60 - P8066 -uchz -pchz