diff options
| -rw-r--r-- | libpod/container_internal_linux.go | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go index 5aa4ee9a9..cb19b5484 100644 --- a/libpod/container_internal_linux.go +++ b/libpod/container_internal_linux.go @@ -1039,6 +1039,11 @@ func (c *Container) makeBindMounts() error { // generateResolvConf generates a containers resolv.conf func (c *Container) generateResolvConf() (string, error) { + var ( + nameservers []string + cniNameServers []string + ) + resolvConf := "/etc/resolv.conf" for _, namespace := range c.config.Spec.Linux.Namespaces { if namespace.Type == spec.NetworkNamespace { @@ -1074,18 +1079,31 @@ func (c *Container) generateResolvConf() (string, error) { return "", errors.Wrapf(err, "error parsing host resolv.conf") } - // Make a new resolv.conf - nameservers := resolvconf.GetNameservers(resolv.Content) - // slirp4netns has a built in DNS server. - if c.config.NetMode.IsSlirp4netns() { - nameservers = append([]string{"10.0.2.3"}, nameservers...) + // Check if CNI gave back and DNS servers for us to add in + cniResponse := c.state.NetworkStatus + for _, i := range cniResponse { + if i.DNS.Nameservers != nil { + cniNameServers = append(cniNameServers, i.DNS.Nameservers...) + logrus.Debugf("adding nameserver(s) from cni response of '%q'", i.DNS.Nameservers) + } } + + // If the user provided dns, it trumps all; then dns masq; then resolv.conf if len(c.config.DNSServer) > 0 { // We store DNS servers as net.IP, so need to convert to string - nameservers = []string{} for _, server := range c.config.DNSServer { nameservers = append(nameservers, server.String()) } + } else if len(cniNameServers) > 0 { + nameservers = append(nameservers, cniNameServers...) + } else { + // Make a new resolv.conf + nameservers = resolvconf.GetNameservers(resolv.Content) + // slirp4netns has a built in DNS server. + if c.config.NetMode.IsSlirp4netns() { + nameservers = append([]string{"10.0.2.3"}, nameservers...) + } + } search := resolvconf.GetSearchDomains(resolv.Content) |