docker容器连接宿主机redis与mysql的配置方法

ifconfig

[root@VM-8-8-centos ~]# ifconfig
br-ffb2f3de993a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        inet6 fe80::42:e9ff:fecd:eb0b  prefixlen 64  scopeid 0x20<link>
        ether 02:42:e9:cd:eb:0b  txqueuelen 0  (Ethernet)
        RX packets 32  bytes 2489 (2.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 38  bytes 2582 (2.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:c1ff:fedc:e526  prefixlen 64  scopeid 0x20<link>
        ether 02:42:c1:dc:e5:26  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3  bytes 266 (266.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

bind 127.0.0.1 172.17.0.1

docker exec -it 容器id ip addr

[root@VM-8-8-centos ~]# docker exec -it 8337cd4ab0a1 ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
35: eth0@if36: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP 
    link/ether 02:42:ac:12:00:02 brd ff:ff:ff:ff:ff:ff
    inet 172.18.0.2/16 brd 172.18.255.255 scope global eth0
       valid_lft forever preferred_lft forever

# 一定要用root账号
mysql -uroot -p密码
# 指定数据库
use mysql;

# 这个命令的作用是：创建一个账号symx，密码12345678的用户，指定只能由172.18.0.2的ip连接
CREATE user `symx`@'172.18.0.2' IDENTIFIED WITH mysql_native_password by '12345678';
# 这个命令的作用是：指定用户symx，ip为172.18.0.2，该用户可以对任意数据库的任意表
# 进行SELECT,INSERT,UPDATE,DELETE,CREATE,DROP操作，*.*的意思是：第一个*是数据库，
# 可以指定哪个数据库，*表示全部数据库；第二个*为表，可以指定是哪个表，*表示全部表
GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP on *.* TO `symx`@'172.18.0.2';
#当然也可以给予账号全部权限，下面和上面的命令只能选择一个，看个人的情况
GRANT ALL PRIVILEGES on *.* TO `symx`@`172.18.0.2`;
# 刷新
FLUSH PRIVILEGES;
# 执行上面的命令可能会出现
# ERROR 1410 (42000): You are not allowed to create a user with GRANT的错误，
# 这时可以执行下面的命令，给予权限
GRANT system_user ON *.* TO 'root';
FLUSH PRIVILEGES;