Windows container unable to ping Ubuntu Container
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Description
We are trying to create a docker swarm that has a ASP.NET Docker service running on a Windows docker container that is served via an Nginx service running on an Ubuntu docker-machine. The problem is the Windows container is not properly responding to other services in the swarm. We have Django apps using the same Nginx service which are running great but the ASP.NET app is timing out.
We went into the Nginx container and successfully touched the ASP.NET container but when we went into the ASP.NET container requests were being sent to the correct IP but all requests time out.
Here is everything we know to this point:
Docker version 17.04.0-ce, build 4845c56
Running Windows Server 2016 - KB3150513
Disabled firewall to confirm it isn't an issue with ports
Windows container running on docker instance directly on the Windows Server
Ubuntu containers are on Ubuntu Docker machines
Ubuntu services can ping Windows services but Windows services unable to reach Ubuntu Services
Ubuntu-> Windows
Windows ->X Ubuntu
Our Stack:
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
jhqjiqg9dhsw ourStack_DjangoProd.1 ourRepo/Django-prod:rc ourStack-worker-5 Running Running 38 seconds ago
qixjelib9bzj ourStack_nginx.1 ourRepo/stealth-nginx:latest ourStack-worker-5 Running Running 34 seconds ago
k8u0p6mzwz54 ourStack_DjangoStage.1 ourRepo/Django-staging:latest ourStack-worker-5 Running Running 39 seconds ago
v1tzi1z7hxei ourStack_DjangoDev.1 ourRepo/Django-staging:latest manager-3 Running Running 39 seconds ago
uxlvdlp6qwuu ourStack_asp-app.1 ourRepo/asp-app:latest CAMSTAT-SVR Running Running less than a second ago
omvwb4cjdrzd ourStack_nginx.2 ourRepo/stealth-nginx:latest manager-3 Running Running 33 seconds ago
kc8tp6dpf6i1 ourStack_DjangoProd.2 ourRepo/Django-prod:rc manager-3 Running Running 37 seconds ago
Nginx ifconfig:
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 10.255.0.13 netmask 255.255.0.0 broadcast 0.0.0.0
ether 02:42:0a:ff:00:0d txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.18.0.5 netmask 255.255.0.0 broadcast 0.0.0.0
ether 02:42:ac:12:00:05 txqueuelen 0 (Ethernet)
RX packets 229 bytes 263967 (257.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 107 bytes 7219 (7.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 10.0.0.6 netmask 255.255.255.0 broadcast 0.0.0.0
ether 02:42:0a:00:00:06 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 12 bytes 1456 (1.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 1456 (1.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Nginx ping ASP:
root@f4dde99e6401:/var/www# ping ourStack_asp-app
PING ourStack_asp-app (10.0.0.2): 56 data bytes
64 bytes from 10.0.0.2: icmp_seq=0 ttl=64 time=0.401 ms
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.095 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.090 ms
64 bytes from 10.0.0.2: icmp_seq=3 ttl=64 time=0.105 ms
64 bytes from 10.0.0.2: icmp_seq=4 ttl=64 time=0.104 ms
64 bytes from 10.0.0.2: icmp_seq=5 ttl=64 time=0.097 ms
64 bytes from 10.0.0.2: icmp_seq=6 ttl=64 time=0.092 ms
64 bytes from 10.0.0.2: icmp_seq=7 ttl=64 time=0.094 ms
64 bytes from 10.0.0.2: icmp_seq=8 ttl=64 time=0.099 ms
64 bytes from 10.0.0.2: icmp_seq=9 ttl=64 time=0.095 ms
--- ourStack_asp-app ping statistics ---
10 packets tranDjangotted, 10 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.090/0.127/0.401/0.091 ms
Nginx service inspect:
[
{
"ID": "ualbse6gr74jehk66ec9ftekk",
"Version": {
"Index": 5388
},
"CreatedAt": "2017-05-02T13:24:12.436333625Z",
"UpdatedAt": "2017-05-02T13:24:12.442605083Z",
"Spec": {
"Name": "ourStack_nginx",
"Labels": {
"com.docker.stack.namespace": "python"
},
"TaskTemplate": {
"ContainerSpec": {
"Image": "8675309/stealth-nginx:latest@sha256:ce9c2faab917ad2fe626843e96846eacb98dc8feb5fcd930ebe1d4da77bf0681",
"Labels": {
"com.docker.stack.namespace": "python"
}
},
"Resources": {},
"RestartPolicy": {
"Condition": "on-failure",
"MaxAttempts": 0
},
"Placement": {
"Constraints": [
"node.platform.os == linux"
]
},
"ForceUpdate": 0
},
"Mode": {
"Replicated": {
"Replicas": 2
}
},
"UpdateConfig": {
"Parallelism": 2,
"Delay": 10000000000,
"FailureAction": "pause",
"MaxFailureRatio": 0
},
"Networks": [
{
"Target": "8mcvr2tcfgeacn16gulkkzkpb",
"Aliases": [
"nginx"
]
}
],
"EndpointSpec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 80,
"PublishMode": "ingress"
}
]
}
},
"Endpoint": {
"Spec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 80,
"PublishMode": "ingress"
}
]
},
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 80,
"PublishMode": "ingress"
}
],
"VirtualIPs": [
{
"NetworkID": "fbopakq2nzt436rq1b2zv5ol7",
"Addr": "10.255.0.10/16"
},
{
"NetworkID": "8mcvr2tcfgeacn16gulkkzkpb",
"Addr": "10.0.0.4/24"
}
]
}
}
]
ASP Service:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e986dfb90c79 ourRepo/asp-app@sha256:1580d526c06482d7ef92c1fdec4beb494ff340feb6f9ec7125fdf67ffa7eefab "C:\\ServiceMonitor..." 6 minutes ago Up 6 minutes 80/tcp, 6000/tcp ourStack_asp-app.1.uxlvdlp6qwuu837kutibvhnac
'''
**ASP ipconfig:**
'''
Windows IP Configuration
Ethernet adapter vEthernet (Container NIC 67208761):
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::f9c8:5b32:1e75:d7bb%64
IPv4 Address. . . . . . . . . . . : 10.255.0.6
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
Ethernet adapter vEthernet (Container NIC 6546affc):
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::d53e:9d30:758a:29ee%69
IPv4 Address. . . . . . . . . . . : 10.0.0.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
Ethernet adapter vEthernet (Container NIC 5e1156e0):
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::d000:c63d:ff:b91a%74
IPv4 Address. . . . . . . . . . . : 172.17.227.52 -- Can access .NET app from here at port 6000
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . : 172.17.224.1
ASP ping:
ping ourStack_nginx
Pinging ourStack_nginx [10.0.0.4] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 10.0.0.4:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
ASP service inspect:
[
{
"ID": "kojjy62r48slhipzvyti56ewb",
"Version": {
"Index": 5381
},
"CreatedAt": "2017-05-02T13:24:11.78049809Z",
"UpdatedAt": "2017-05-02T13:24:11.782822174Z",
"Spec": {
"Name": "ourStack_asp-app",
"Labels": {
"com.docker.stack.namespace": "ourStack"
},
"TaskTemplate": {
"ContainerSpec": {
"Image": "ourRepo/asp-app:latest@sha256:1580d526c06482d7ef92c1fdec4beb494ff340feb6f9ec7125fdf67ffa7eefab",
"Labels": {
"com.docker.stack.namespace": "ourStack"
}
},
"Resources": {},
"Placement": {
"Constraints": [
"node.platform.os == windows"
]
},
"ForceUpdate": 0
},
"Mode": {
"Replicated": {
"Replicas": 1
}
},
"Networks": [
{
"Target": "8mcvr2tcfgeacn16gulkkzkpb",
"Aliases": [
"asp-app"
]
}
],
"EndpointSpec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 6000,
"PublishedPort": 6000,
"PublishMode": "ingress"
}
]
}
},
"Endpoint": {
"Spec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 6000,
"PublishedPort": 6000,
"PublishMode": "ingress"
}
]
},
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 6000,
"PublishedPort": 6000,
"PublishMode": "ingress"
}
],
"VirtualIPs": [
{
"NetworkID": "fbopakq2nzt436rq1b2zv5ol7",
"Addr": "10.255.0.3/16"
},
{
"NetworkID": "8mcvr2tcfgeacn16gulkkzkpb",
"Addr": "10.0.0.2/24"
}
]
}
}
]
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No repository files or tests are named. Start by reproducing the Docker Swarm setup on Windows Server 2016 and Ubuntu nodes, then run the shown ping and docker service inspect checks from both containers. Done means the Windows ASP service can reach the Ubuntu Nginx service over the shared swarm network, with the cross-platform networking failure understood and addressed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- docker, nginx
- Domain
- devops, distributed-systems, networking
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100