kotovalexarian-likes-github/moby--moby
1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
Code Releases Activity

Suppress "IPv4 forwarding" warning for --net=host

Browse source 
Containers using the host network stack (--net=host)
are not affected by "ip-forwarding" being disabled,
so there's not need to show a warning.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2016-05-18 20:10:31 +02:00
parent af705ca0ae
commit 5fb7f9b29e
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
2 changed files with 6 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
daemon/daemon_unix.go
View file

@ -488,7 +488,9 @@ func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.
if hostConfig.OomScoreAdj < -1000 || hostConfig.OomScoreAdj > 1000 {
return warnings, fmt.Errorf("Invalid value %d, range for oom score adj is [-1000, 1000]", hostConfig.OomScoreAdj)
}
if sysInfo.IPv4ForwardingDisabled {
// ip-forwarding does not affect container with '--net=host'
if sysInfo.IPv4ForwardingDisabled && !hostConfig.NetworkMode.IsHost() {
warnings = append(warnings, "IPv4 forwarding is disabled. Networking will not work.")
logrus.Warnf("IPv4 forwarding is disabled. Networking will not work")
}

3
docs/userguide/networking/default_network/container-communication.md
View file

@ -37,6 +37,9 @@ or to turn it on manually:
net.ipv4.conf.all.forwarding = 1
```
> **Note**: this setting does not affect containers that use the host
> network stack (`--net=host`).
Many using Docker will want `ip_forward` to be on, to at least make
communication _possible_ between containers and the wider world. May also be
needed for inter-container communication if you are in a multiple bridge setup.