[英]Docker container can't reach another container using hostname
I have 2 containers: 我有2个容器:
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
both are running really fine. 两者都运行良好。 Inside the nginx container I can reach the app using 在Nginx容器中,我可以使用
curl http://myapp.dev
and also from host machine as well. 以及来自主机的信息。
What I'm trying to do is the same curl request but from the my-php container using the same "myapp.dev" hostname, howerver... 我正在尝试做的是相同的curl请求,但是从my-php容器使用相同的“ myapp.dev”主机名,但是...
curl: (7) Failed to connect to myapp.dev port 80: Connection refused curl:(7)无法连接到myapp.dev端口80:连接被拒绝
I can use the container's ip instead, but it doesn't fit me. 我可以改用容器的ip,但这不适合我。
Even though I can't reach using curl, I can still ping the other container with no problems. 即使我无法使用curl,我仍然可以ping另一个容器而不会出现问题。
on nginx container: 在nginx容器上:
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
on php container 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
myapp.conf on nginx 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;
}
}
Does anybody have any clue? 有人有任何线索吗?
add the IP to your /etc/hosts file within your my-php container: 将IP添加到my-php容器中的/ etc / hosts文件中:
(ip of your nginx container) myapp.dev (您的nginx容器的IP)myapp.dev
Should get the result you need. 应该得到您需要的结果。
example: 例:
111.111.111.111 foo.bar.com 111.111.111.111 foo.bar.com
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