我正在尝试使用docker-compose连接在docker上运行的两个mongodb容器.一个容器使用mongoimport将一些数据播种到另一个容器.
但是,运行mongoimport时出现以下错误
Failed: error connecting to db server: no reachable servers
我实际上可以从mongo-seed到达mongodb容器,因为我将ping -c 3 mongodb附加到CMD,容器可以成功解析该主机名.
在我正在使用的文件下面：
泊坞窗,compose.yml
version: '2'
services:
mongodb:
image: mongo:3.2
ports:
- "27017:27017"
mongo-seed:
build: ./mongo-seed
蒙戈种子/ Dockerfile
FROM mongo:3.2
COPY init.json /init.json
CMD ping -c 3 mongodb && mongoimport --host mongodb --db test --collection users
--type json --file /init.json --jsonArray
蒙戈种子/ init.json
[
{
"name": "Joe Smith","email": "jsmith@gmail.com","age": 40,"admin": false
},{
"name": "Jen Ford","email": "jford@gmail.com","age": 45,"admin": true
}
]
这就是docker-output的输出：
mongo-seed_1 | PING mongodb (172.18.0.2): 48 data bytes
mongo-seed_1 | 56 bytes from 172.18.0.2: icmp_seq=0 ttl=64 time=0.116 ms
mongo-seed_1 | 56 bytes from 172.18.0.2: icmp_seq=1 ttl=64 time=0.141 ms
mongo-seed_1 | 56 bytes from 172.18.0.2: icmp_seq=2 ttl=64 time=0.114 ms
mongo-seed_1 | --- mongodb ping statistics ---
mongo-seed_1 | 3 packets transmitted,3 packets received,0% packet loss
mongo-seed_1 | round-trip min/avg/max/stddev = 0.114/0.124/0.141/0.000 ms
mongo-seed_1 | 2016-08-09T20:34:15.728+0000 [........................] smtt.devices 0.0 B/25.5 MB (0.0%)
mongo-seed_1 | 2016-08-09T20:34:17.992+0000 [........................] smtt.devices 0.0 B/25.5 MB (0.0%)
mongo-seed_1 | 2016-08-09T20:34:17.992+0000 Failed: error connecting to db server: no reachable servers
mongo-seed_1 | 2016-08-09T20:34:17.992+0000 imported 0 documents
mongo_mongo-seed_1 exited with code 1
任何的想法？我错过了什么？
我终于可以设法连接两个容器了.我的发现是为了记录目的.
要点
> docker-compose版本2创建一个桥接网络并将所有容器添加到其中.
> mongod不知道这个网络,因此不绑定到该IP.默认情况下,仅绑定到127.0.0.1
> mongoimport无法使用容器名称建立连接,即使它应该被转换为容器ip.
解
>通过明确定义网络为mongodb分配静态IP
>使用–bind_ip标志指向该静态IP的Init mongo容器
>使用ip地址而不是主机名与mongoimport
泊坞窗,compose.yml
version: '2'
services:
mongodb:
image: mongo:3.2
ports:
- "27017:27017"
networks:
mongo_net:
ipv4_address: 172.16.0.1
command: mongod --bind_ip 127.0.0.1,172.16.0.1
mongo-seed:
build: ./mongo-seed
networks:
mongo_net:
depends_on:
- mongodb
networks:
mongo_net:
driver: bridge
ipam:
config:
- subnet: 172.16.0.0/24
gateway: 172.16.0.254
蒙戈种子/ Dockerfile
FROM mongo:3.2
COPY init.json /init.json
CMD mongoimport --host 172.16.0.1 --db test --collection users
--type json --file /init.json --jsonArray
