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Fix: network=host using wrong resolv.conf with systemd-resolved 

When running a container in the host's network namespace, the container
gets a copy of the host's resolv.conf (copied to `/etc/resolv.conf` inside
the container).

The current code always used the default (`/etc/resolv.conf`) path on the
host, irregardless if `systemd-resolved` was used or not.

This patch uses the correct file if `systemd-resolved` was detected
to be running.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2019-01-10 22:58:55 +01:00
parent b4842cfe88
commit 8364d1c9d5
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GPG Key ID: 76698F39D527CE8C
1 changed files with 3 additions and 3 deletions
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6
daemon/container_operations_unix.go
View File

@ -371,11 +371,11 @@ func (daemon *Daemon) setupPathsAndSandboxOptions(container *container.Container
if container.HostConfig.NetworkMode.IsHost() {
// Point to the host files, so that will be copied into the container running in host mode
*sboxOptions = append(*sboxOptions, libnetwork.OptionOriginHostsPath("/etc/hosts"))
*sboxOptions = append(*sboxOptions, libnetwork.OptionOriginResolvConfPath("/etc/resolv.conf"))
} else {
*sboxOptions = append(*sboxOptions, libnetwork.OptionOriginResolvConfPath(daemon.configStore.GetResolvConf()))
}
// Copy the host's resolv.conf for the container (/etc/resolv.conf or /run/systemd/resolve/resolv.conf)
*sboxOptions = append(*sboxOptions, libnetwork.OptionOriginResolvConfPath(daemon.configStore.GetResolvConf()))
container.HostsPath, err = container.GetRootResourcePath("hosts")
if err != nil {
return err