Bug 1092781
| Summary: | NetworkSettings are not written out in container config on exit | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | J.C. Molet <jmolet> |
| Component: | docker | Assignee: | Daniel Walsh <dwalsh> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.1 | CC: | bsarathy, cevich, dwalsh, lsm5 |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-09-18 20:45:18 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1109938, 1138364 | ||
# docker inspect fbd36a9d7071 | json_reformat | grep "NetworkSettings" -A8
"NetworkSettings": {
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"Gateway": "172.17.42.1",
"Bridge": "docker0",
"PortMapping": null,
"Ports": {
}
-bash-4.3# cat /var/lib/docker/containers/fbd36a9d707171bd20e0b0630c156f08e9b1ef4947fe0adef1d33e9f494ace68/config.json | json_reformat | grep "NetworkSettings" -A 8
"NetworkSettings": {
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"Gateway": "172.17.42.1",
"Bridge": "docker0",
"PortMapping": null,
"Ports": {
}
rpm -q docker-io
docker-io-0.11.1-3.fc21.x86_64
Seems to be fixed in -0.11.1-3
Clarification: This bug is about inspect output on running vs. exited containers. Essentially, the stopped container doesn't show the networking settings that were used when it was running. This may be expected behavior, we just wanted to make sure it was documented if so. Otherwise, it's definitely still broken:
[root@docker docker]# rpm -q docker
docker-0.11.1-5.el7.x86_64
[root@docker docker]# /usr/bin/docker -D run --name=4vMlGgNqFzyB image_blah_blah /bin/bash -c '/bin/true'
[debug] hijack.go:96 [hijack] End of stdout
[debug] commands.go:1958 End of CmdRun(), Waiting for hijack to finish.
[root@docker docker]# docker inspect 4vMlGgNqFzyB | grep "NetworkSettings" -A8
"NetworkSettings": {
"IPAddress": "",
"IPPrefixLen": 0,
"Gateway": "",
"Bridge": "",
"PortMapping": null,
"Ports": null
},
"ResolvConfPath": "/etc/resolv.conf",
[root@docker docker]# /usr/bin/docker -D run --name running image_blah_blah /bin/bash -c 'sleep 1h'
...
[root@docker docker]# docker inspect running | grep "NetworkSettings" -A8
"NetworkSettings": {
"IPAddress": "172.17.0.11",
"IPPrefixLen": 16,
"Gateway": "172.17.42.1",
"Bridge": "docker0",
"PortMapping": null,
"Ports": {}
},
"ResolvConfPath": "/etc/resolv.conf",
Confirmed fixed in docker-1.0.0-10.el7.x86_64 Client version: 1.0.0 Client API version: 1.12 Go version (client): go1.2.2 Git commit (client): 20fdb42/1.0.0 Server version: 1.0.0 Server API version: 1.12 Go version (server): go1.2.2 Git commit (server): 20fdb42/1.0.0 docker inspect of running container shows current values, as does /var/lib/docker/<cid>/config.json docker inspect of stopped container shows current empty/null values as does /var/lib/docker/<cid>/config.json Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2014-1266.html |
Description of problem: NetworkSettings are not written out in a container's config.json when the container exits, and its values differ from the docker inspect output Version-Release number of selected component (if applicable): # docker version Client version: 0.10.0 Client API version: 1.10 Go version (client): go1.2.1 Git commit (client): dc9c28f/0.10.0 Server version: 0.10.0 Server API version: 1.10 Git commit (server): dc9c28f/0.10.0 Go version (server): go1.2.1 Last stable version: 0.10.0 [root@jmolet-vm2 client]# rpm -q docker-io docker-io-0.10.0-2.el7.x86_64 How reproducible: always? Steps to Reproduce: 1. Get a docker image 2. Run a simple command on that image, eg: docker run mattdm/fedora /bin/bash -c "/bin/true" 3. compare the output of docker inspect on the resultant container, vs the container's config.json Actual results: # docker run mattdm/fedora /bin/bash -c "/bin/true" # docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2da268ca628e 10.16.71.105:5000/fedora:latest /bin/bash -c /bin/tr 13 seconds ago Exited (0) 12 seconds ago grave_mcclintock # cat /var/lib/docker/containers/2da268ca628ed0e3ce55061ca9df5150844a411f33a2a94715652ab62c97ccc1/config.json | json_reformat | grep "NetworkSettings" -A 8 "NetworkSettings": { "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "Gateway": "172.17.42.1", "Bridge": "docker0", "PortMapping": null, "Ports": { } # docker inspect 2da268ca628ed0e3 | json_reformat | grep "NetworkSettings" -A 7 "NetworkSettings": { "IPAddress": "", "IPPrefixLen": 0, "Gateway": "", "Bridge": "", "PortMapping": null, "Ports": null }, Expected results: These two fields should be the same? Additional info: