Docker容器无法使用主机名到达另一个容器

Question

我有两个集装箱：

docker run -d -p 9000:9000 --name="my-php" php-fpm:5.4

docker run -d --name="nginx" -p 80:80 -link my-php:web nginx

两人都跑得很好。在nginx容器中，我可以使用

curl http://myapp.dev

同时也来自主机。

我试图做的是使用相同的"myapp.dev“主机名从my容器中发出相同的curl请求，但是.

curl：(7)未能连接到myapp.dev端口80:连接被拒绝

我可以用容器的ip代替，但它不适合我。

即使我无法达到使用卷发，我仍然可以平另一个容器，没有任何问题。

在nginx集装箱上：

root@6252bfe9d545:/# env
WEB_PORT_9000_TCP_PROTO=tcp
HOSTNAME=6252bfe9d545
WEB_PORT_9000_TCP_ADDR=172.17.0.24
WEB_PORT_9000_TCP_PORT=9000
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
NGINX_VERSION=1.7.9-1~wheezy
SHLVL=1
HOME=/root
WEB_NAME=/nginx/web
WEB_PORT_9000_TCP=tcp://172.17.0.24:9000
WEB_PORT=tcp://172.17.0.24:9000
_=/usr/bin/env

root@6252bfe9d545:/# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         172.17.42.1     0.0.0.0         UG    0      0        0 eth0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 eth0

在php容器上

root@c7c521c4a40c:/# env
MYSQLDB_PORT_3306_TCP=tcp://172.17.0.22:3306
HOSTNAME=c7c521c4a40c
MYSQLDB_NAME=/php/mysqldb
MEMCACHEDB_ENV_MEMCACHED_VERSION=1.4.22
MYSQLDB_PORT=tcp://172.17.0.22:3306
MEMCACHEDB_PORT=tcp://172.17.0.23:11211
MEMCACHEDB_NAME=/php/memcachedb
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
MYSQLDB_PORT_3306_TCP_PROTO=tcp
MEMCACHEDB_ENV_MEMCACHED_SHA1=5968d357d504a1f52622f9f8a3e85c29558acaa5
PWD=/
MEMCACHEDB_PORT_11211_TCP=tcp://172.17.0.23:11211
MEMCACHEDB_PORT_11211_TCP_PORT=11211
SHLVL=1
HOME=/root
MYSQLDB_PORT_3306_TCP_ADDR=172.17.0.22
MEMCACHEDB_PORT_11211_TCP_PROTO=tcp
MYSQLDB_PORT_3306_TCP_PORT=3306
MEMCACHEDB_PORT_11211_TCP_ADDR=172.17.0.23
_=/usr/bin/env

(here it's showing links to mysql and memchache which I hide on run command before paste on stackoverflow)

ping myapp.dev
PING myapp.dev (127.0.53.53) 56(84) bytes of data.
64 bytes from 127.0.53.53: icmp_seq=1 ttl=64 time=0.025 ms

root@c7c521c4a40c:/# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         172.17.42.1     0.0.0.0         UG    0      0        0 eth0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 eth0

nginx上的myapp.conf

server {
        listen          80;
        server_name     myapp.dev;
        root            /projects/MyApp/public;
        index           index.html index.htm index.php;

        fastcgi_connect_timeout 5000s;
        fastcgi_read_timeout 5000s;
        fastcgi_send_timeout 5000s;

        access_log /var/log/nginx-access.log;
        error_log /var/log/nginx-error.log;
        location / {
                try_files $uri $uri/ /index.php$is_args$args;
        }

        location ~ \.php$ {
                fastcgi_pass    web:9000;
                fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include         fastcgi_params;
            fastcgi_param   APPLICATION_ENV dev;
        }
}

有人有线索吗？

Answer 1

将IP添加到my容器中的/etc/host文件：

( nginx容器的ip) myapp.dev

应该能得到你需要的结果。

示例：

111.111.111.111 foo.bar.com