Docker不会绑定到地址;说它正在使用但它不是

时间:2018-04-27 20:58:24

标签: linux docker networking ssh centos7

我试图将两个端口从docker容器绑定到其中一个主机接口上当前未使用的IP地址。

我尝试启动容器(基于centos / systemd图像),如下所示:

sudo docker run --privileged -d -p 172.19.5.1:22:22 -p 172.19.5.1:5432:5432 --name test --hostname test -v /sys/fs/cgroup:/sys/fs/cgroup:ro --net cdnet image_name

它失败并显示消息:Error starting userland proxy: listen tcp 172.19.5.1:22: bind: address already in use.

您可以从网络设置中看到此地址应完全有效:

[
    {
        "Name": "cdnet",
        "Id": "c7f58c7f7765b7ee85ffd7638d98c1f73d0abf2393635d26d9634ac94e1c05e9",
        "Created": "2018-04-27T20:40:44.542040471Z",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.19.0.0/16",
                    "Gateway": "172.19.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]

并且为了更好的衡量,我在我的机器的主要网络接口上创建了IP:

6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP qlen 1000
    link/ether 0c:c4:7a:8e:f4:f2 brd ff:ff:ff:ff:ff:ff
    inet 69.241.118.34/30 brd 69.241.118.35 scope global bond0
       valid_lft forever preferred_lft forever
    inet 69.241.118.0/30 scope global bond0
       valid_lft forever preferred_lft forever
    inet 69.241.118.4/30 scope global bond0
       valid_lft forever preferred_lft forever
    inet 172.19.5.1/25 scope global bond0
       valid_lft forever preferred_lft forever
    inet 69.241.118.1/30 scope global secondary bond0
       valid_lft forever preferred_lft forever
    inet 69.241.118.2/30 scope global secondary bond0
       valid_lft forever preferred_lft forever
    inet 69.241.118.3/30 scope global secondary bond0
       valid_lft forever preferred_lft forever
    inet6 2001:558:fee8:17a:ec4:7aff:fe8e:f4f2/64 scope global deprecated mngtmpaddr dynamic 
       valid_lft 1974996sec preferred_lft 0sec
    inet6 2001:558:fee8:17a::2/64 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::ec4:7aff:fe8e:f4f2/64 scope link 
       valid_lft forever preferred_lft forever

我没有其他容器正在运行(sudo docker ps -aq没有返回任何内容)我确定没有其他进程正在使用该地址 - 这里是sudo netstat -anlp的输出(没有Unix域)套接字部分):

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 127.0.0.1:199           0.0.0.0:*               LISTEN      1406/snmpd          
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/systemd           
tcp        0      0 192.168.122.1:53        0.0.0.0:*               LISTEN      1763/dnsmasq        
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1397/sshd           
tcp        0      0 0.0.0.0:1691            0.0.0.0:*               LISTEN      31215/perl          
tcp        0      0 0.0.0.0:5662            0.0.0.0:*               LISTEN      31215/perl          
tcp6       0      0 :::111                  :::*                    LISTEN      1/systemd           
tcp6       0      0 :::22                   :::*                    LISTEN      1397/sshd           
tcp6       0    920 <IP REDACTED>:22 <IP REDACTED> ESTABLISHED 22357/sshd: <USERNAME REDACTED> 
tcp6       0      0 <IP REDACTED>:22 <IP REDACTED> ESTABLISHED 22099/sshd: <USERNAME REDACTED> 
udp        0      0 0.0.0.0:53763           0.0.0.0:*                           1406/snmpd          
udp        0      0 0.0.0.0:57647           0.0.0.0:*                           1406/snmpd          
udp        0      0 192.168.122.1:53        0.0.0.0:*                           1763/dnsmasq        
udp        0      0 0.0.0.0:67              0.0.0.0:*                           1763/dnsmasq        
udp        0      0 0.0.0.0:111             0.0.0.0:*                           17684/rpcbind       
udp        0      0 0.0.0.0:161             0.0.0.0:*                           1406/snmpd          
udp        0      0 0.0.0.0:162             0.0.0.0:*                           2589/snmptrapd      
udp        0      0 0.0.0.0:892             0.0.0.0:*                           17684/rpcbind       
udp        0      0 0.0.0.0:35179           0.0.0.0:*                           1406/snmpd          
udp6       0      0 :::111                  :::*                                17684/rpcbind       
udp6       0      0 :::892                  :::*                                17684/rpcbind

(不用说,编辑的IP不是我试图绑定的那个;它们是我和机器的真实外部IPv6地址。)

我在搜索中找到的发布docker容器端口的所有结果只是试图将端口绑定到localhost,我真的无法弄清楚为什么会破坏它。该系统是CentOS Linux版本7.4.1708(核心版),Docker版本17.05.0-ce,版本89658be

注意:我在Dockerfile中尝试使用EXPOSE 22 5432和不使用ip addr,我尝试了不同的IP地址(您可以在上面的-DADHOC输出中看到)。< / p>

1 个答案:

答案 0 :(得分:1)

0.0.0.0表示“所有ipv4接口”,所以是的,它已经在你输出的这一行中使用了:

tcp      0    0 0.0.0.0:22      0.0.0.0:*       LISTEN    1397/sshd