Name resolution failing for links

Docker Desktop
,
1

Containers are failing to resolve links within the container.

The workaround I’ve found is to uninstall docker for mac from the preferences menu. Download a fresh copy from https://docs.docker.com/docker-for-mac/ and install. The reinstalled docker container now resolves links as expected.

The same problem happened on a coworker’s computer, so now I’ve seen this issue twice.

Expected behavior

docker-compose up

#get into a container with a link defined by docker-compose
user@host:~ $ docker exec -it 8c7a797612e4 /bin/bash
root@8c7a797612e4:/# ping linked-app
PING linked-app (172.17.0.16): 48 data bytes
56 bytes from 172.17.0.16: icmp_seq=0 ttl=64 time=0.244 ms

Actual behavior

user@host:/tmp/tmp/20160630-135050$ docker exec -it 5260b43b8afa /bin/bash
root@5260b43b8afa:/# ping linked-app
ping: unknown host

Information

All diagnostics showed [OK] (but I did not copy and paste the window before reinstalling)

OS X 10.11.5

Steps to reproduce the behavior

Unknown

2 Likes
2

This problem has recurred on my computer. I will see if I can figure anything out while it is in the bad state.

diagnostic summary:

Docker for Mac: version: mac-v1.12.0-beta17
OS X: version 10.11.5 (build: 15F34)
logs: /tmp/20160630-233405.tar.gz
[OK] docker-cli
[OK] app
[OK] menubar
[OK] virtualization
[OK] system
[OK] osxfs
[OK] db
[OK] slirp
[OK] moby-console
[OK] logs
[OK] vmnetd
[OK] env
[OK] moby
[OK] driver.amd64-linux

I find that there’s too much personal/business information inside of the diagnostic logs and I can’t upload them. However I’m willing to upload portions or redacted data.

3

These vmnetd error messages look like they might be related:

Jun 30 23:50:25 devi Docker[com.docker.slirp][97012] : Created instance tcp:0.0.0.0:3002:tcp:172.17.0.16:80
Jun 30 23:50:25 devi Docker[com.docker.osxfs][97011] : Creating resource Entry(d348644c0ecae0195988831cea8e9d5dd547d89e6fd01a7ea87b329f5bef3173)
Jun 30 23:50:25 devi Docker[com.docker.osxfs][97011] : Write offset=0 data=[d348644c0ecae0195988831cea8e9d5dd547d89e6fd01a7ea87b329f5bef3173:/Users/user/co/docker/repos/myapp] to file
Jun 30 23:50:25 devi Docker[com.docker.osxfs][97011] : Volume.start d348644c0ecae0195988831cea8e9d5dd547d89e6fd01a7ea87b329f5bef3173 (paths = [/Users/user/co/docker/repos/myapp])
Jun 30 23:50:25 devi Docker[com.docker.osxfs][97011] : Created instance d348644c0ecae0195988831cea8e9d5dd547d89e6fd01a7ea87b329f5bef3173
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Creating resource Entry(tcp:0.0.0.0:4001:tcp:172.17.0.17:443)
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Write offset=0 data=[tcp:0.0.0.0:4001:tcp:172.17.0.17:443] to file
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : attempting a best-effort bind of ::1:4001
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Created instance tcp:0.0.0.0:4001:tcp:172.17.0.17:443
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Creating resource Entry(tcp:0.0.0.0:3001:tcp:172.17.0.17:80)
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Write offset=0 data=[tcp:0.0.0.0:3001:tcp:172.17.0.17:80] to file
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : attempting a best-effort bind of ::1:3001
Jun 30 23:50:26 devi Docker[com.docker.slirp][97012] : Created instance tcp:0.0.0.0:3001:tcp:172.17.0.17:80
Jun 30 23:50:57 devi kernel[kern][0] : process com.docker.hyper[97017] caught causing excessive wakeups. EXC_RESOURCE supressed due to audio playback
Jun 30 23:51:03 devi Docker[com.docker.vmnetd][97081] : EOF reading packet from Unix domain socket: closing
Jun 30 23:51:03 devi Docker[com.docker.slirp][97012] : server loop caught (Failure “Caught EOF on underlying FLOW”): no further requests will be processed
Jun 30 23:51:03 devi Docker[com.docker.vmnetd][97081] : Failed to read hello from client

4

I am having a very similar problem. This was in my syslog:

Jul  1 12:58:26 Macbook Docker[13667]: Creating resource Entry(tcp:0.0.0.0:6379:tcp:172.17.0.2:6379)
Jul  1 12:58:26 Macbook Docker[13667]: Write offset=0 data=[tcp:0.0.0.0:6379:tcp:172.17.0.2:6379] to file
Jul  1 12:58:26 Macbook Docker[13667]: attempting a best-effort bind of ::1:6379
Jul  1 12:58:26 Macbook Docker[13667]: Created instance tcp:0.0.0.0:6379:tcp:172.17.0.2:6379
Jul  1 12:58:26 Macbook Docker[13667]: Creating resource Entry(tcp:0.0.0.0:10001:tcp:172.17.0.3:10001)
Jul  1 12:58:26 Macbook Docker[13667]: Write offset=0 data=[tcp:0.0.0.0:10001:tcp:172.17.0.3:10001] to file
Jul  1 12:58:26 Macbook Docker[13667]: attempting a best-effort bind of ::1:10001
Jul  1 12:58:26 Macbook Docker[13667]: Created instance tcp:0.0.0.0:10001:tcp:172.17.0.3:10001
Jul  1 12:58:30 Macbook Docker[13667]: server loop caught (Failure "Caught EOF on underlying FLOW"): no further requests will be processed
Jul  1 12:58:30 Macbook Docker[15427]: EOF reading packet from Unix domain socket: closing
Jul  1 12:58:30 Macbook Docker[15427]: Failed to read hello from client
Jul  1 12:58:39 Macbook Docker[13667]: TCP 104.239.220.248:80 > 192.168.65.2:47910 proxy failed with flow proxy b: Connection refused
Jul  1 12:59:43 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37704 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 12:59:58 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37704 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:00:14 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37704 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:00:46 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37704 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:00:58 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:01:01 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:01:05 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:01:14 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:01:30 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:02:02 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59194 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:02:18 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37718 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:02:25 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37718 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:02:33 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37718 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:02:49 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37718 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:03:21 Macbook Docker[13667]: TCP 198.105.244.24:6379 > 192.168.65.2:37718 rejected: Socket.TCPV4.connect_v4 198.105.244.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:03:33 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59198 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
Jul  1 13:03:36 Macbook Docker[13667]: TCP 198.105.254.24:6379 > 192.168.65.2:59198 rejected: Socket.TCPV4.connect_v4 198.105.254.24:6379: Lwt_unix.connect: caught Unix.Unix_error(Unix.ETIMEDOUT, "connect", "")
5

I believe I’m having a related issue. Using a node server inside I docker that is making multiple requests (to the same server) . The node server is running a slack chat bot.

info: Failed to update message :frowning: { Error: getaddrinfo EAI_AGAIN slack.com:443
at Object.exports._errnoException (util.js:953:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:79:26)
code: ‘EAI_AGAIN’,
errno: ‘EAI_AGAIN’,
syscall: ‘getaddrinfo’,
hostname: ‘slack.com’,
host: ‘slack.com’,
port: 443 }

6

This is still happening to me intermittently with Docker for Mac 1.12.0-rc3-beta18 (build: 9996). It seems like restarting Docker for Mac now clears it up, though (as opposed to having to blow away the installation entirely).

7

This is happening consistently for me (and has been for the last month - I’ve been left to use a much older version of Docker for Mac in the mean time). I’m going to try to uninstall and reinstall.

8

This problem has not reproduced since I upgraded to docker-compose file format version 2