Docker 启动RabbitMQ 服务，外部不能正常访问

今天在总结RabbitMQ消息队列服务器时，遇到一个小问题：服务器拉取RabbitMQ 服务器镜像正常，启动RabbitMQ 镜像服务正常，但通过外部访问RabbitMQ 管理端提示无法访问。

第一步：检查服务器的防火墙状态(firewalld）

核心指令：

systemctl status firewalld.service  // 查看防火墙状态

systemctl stop firewalld.service    //关闭防火墙状态

[root@localhost ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor pr
   Active: inactive (dead) since 六 2022-06-18 01:33:04 CST; 1 months 13 days ag
     Docs: man:firewalld(1)
 Main PID: 30715 (code=exited, status=0/SUCCESS)
 
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAILED:
6月 18 01:33:02 localhost.localdomain systemd[1]: Stopping firewalld - dynamic f
6月 18 01:33:04 localhost.localdomain systemd[1]: Stopped firewalld - dynamic fi
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since 六 2022-06-18 01:33:04 CST; 1 months 13 days ago
     Docs: man:firewalld(1)
 Main PID: 30715 (code=exited, status=0/SUCCESS)
 
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 00:04:01 localhost.localdomain firewalld[30715]: WARNING: COMMAND_FAI...
6月 18 01:33:02 localhost.localdomain systemd[1]: Stopping firewalld - dynam...
6月 18 01:33:04 localhost.localdomain systemd[1]: Stopped firewalld - dynami...
Hint: Some lines were ellipsized, use -l to show in full.

结果：问题还是没有解决

2、检查防火墙日志

核心指令：tail /var/log/firewalld

[root@localhost log]# tail /var/log/firewalld
2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -F DOCKER' failed: iptables: No chain/target/match by that name.
 
2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -X DOCKER' failed: iptables: No chain/target/match by that name.
 
2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -F DOCKER-ISOLATION' failed: iptables: No chain/target/match by that name.
 
2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -X DOCKER-ISOLATION' failed: iptables: No chain/target/match by that name.
 
2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -D FORWARD -i docker0 -o docker0 -j DROP' failed: iptables: Bad rule (does a matching rule exist in that chain?).

重点关注错误日志：2022-06-18 00:04:01 WARNING: COMMAND_FAILED: '/usr/sbin/iptables -w10 -D FORWARD -i docker0 -o docker0 -j DROP' failed: iptables: Bad rule (does a matching rule exist in that chain?).

google 和百度后得知：docker默认会自动添加iptables rule

解决办法：docker.service禁止修改iptables

3、修改docker.service 服务，禁用修改iptables.

[root@localhost system]# vi /lib/systemd/system/docker.service

 
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd --iptables=false

在ExecStart 添加 --iptables=false.

重新启动docker 容器服务：

 
[root@localhost system]# systemctl daemon-reload
[root@localhost system]# systemctl restart docker

重新启动RabbitMQ 服务：

 
[root@localhost system]# docker restart 4b0032
4b0032
[root@localhost system]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                                                                         NAMES
4b0032878886        6c3c2a225947        "docker-entrypoint.s…"   47 hours ago        Up 3 seconds        4369/tcp, 5671/tcp, 0.0.0.0:5672->5672/tcp, 15671/tcp, 15691-15692/tcp, 25672/tcp, 0.0.0.0:15672->15672/tcp   rabbitmq

RabbitMQ服务管理界面，能够正常方法。