mysql 多库不同主机免密码定时备份

设置mysql免密码登陆配置（前提当前主机安装了"mysql-client"）

可以避免 Warning: Using a password on the command line interface can be insecure.

[root@xxxx-zabbx-12l ~]# mysql_config_editor set --login-path=confdb --user=xxxx --socket=/tmp/    
dingding.log                                                              mysql.sock                                                                .X11-unix/    
.font-unix/                                                               sess_vutauod8dd2etpnugs0peb9845                                           .XIM-unix/    
hsperfdata_root/                                                          systemd-private-4fe3e89c1d0d4336b0f8eb906b922e7a-vgauthd.service-WuBPGJ/  zabbix_server_5297.pinger    
.ICE-unix/                                                                systemd-private-4fe3e89c1d0d4336b0f8eb906b922e7a-vmtoolsd.service-6bsXLG/ zabbix_server_alerter.sock    
jetty-0.0.0.0-8080-xwiki-_xwiki-any-2760222951236920400.dir/              .Test-unix/                                                               zabbix_server_preprocessing.sock    
[root@xxxx-zabbx-12l ~]# mysql_config_editor set --login-path=confdb --host=192.168.0.68 --port=3306 --user=xxxx --socket=/tmp/mysql.sock --password    
Enter password:     
[root@xxxx-zabbx-12l ~]# mysql --login-path=confdb  

mysql> show databases;    
+--------------------+    
| Database           |    
+--------------------+    
| information_schema |    
| config             |    
+--------------------+    
2 rows in set (0.00 sec)

mysql> use config;    
  
mysql> show tables;    
+---------------------------+    
| Tables_in_config          |    
+---------------------------+    
| app_info                  |    
+---------------------------+  

[root@xxxx-zabbx-12l ~]# mysql_config_editor print --all    ##查看配置信息
[confdb]    
user = xxxx   
password = *****    
host = 192.168.0.68    
socket = /tmp/mysql.sock    
port = 3306

设置定时任务&& 备份脚本编写

[root@uat-mysqlredis-214l ~]# crontab  -l  
30 1 * * * /usr/sbin/ntpdate 192.168.0.76 >> /var/log/ntpdate.log  
10 8,11,15,18,22 * * * /usr/bin/sh /root/mysql-rdb_backup.sh  
[root@uat-mysqlredis-214l ~]# cat mysql-rdb_backup.sh   
#!/bin/bash  
   
# 数据库备份脚本  
# author:sean-litx 2019-11-29  
PATH=/data/mysql/bin:/data/xxxx-java/bin:/data/xxxx-java/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin

date=$(date +%Y%m%d%H)  
   
#mysql_config_editor set --login-path=rdb_home --host=192.168.0.214 --port=3306 --user=xxxx --socket=/tmp/mysql.sock --password  
#mysql_config_editor set --login-path=61-rdb_tech --host=192.168.0.61 --port=3306 --user=xxxx --socket=/tmp/mysql.sock --password  
#mysql_config_editor set --login-path=72-rdb_tech --host=192.168.0.72 --port=3306 --user=xxxx --socket=/tmp/mysql.sock --password

  
backupdir=/data/mysql-home_backup

mkdir -pv $backupdir

mysqldump --login-path=rdb_home --database -B xxxx_dt_home_rdb xxxx_dt_business_rdb | gzip > $backupdir/rdb-home-multi-${date}.sql.gz  
mysqldump --login-path=72-rdb_tech --database xxxx_library_rdb | gzip > $backupdir/rdb-tech-library-${date}.sql.gz

  
find ${backupdir} -mtime +7 -name 'rdb-*' -exec rm -rf {} \;   ##保留7天备份

gzip -d xxxxx-${date}.sql.gz #解压