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allow /etc/hosts /etc/resolv.conf and /etc/hostname to be changed
Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
This commit is contained in:
parent
366fe67946
commit
f3b2c93b9f
2 changed files with 9 additions and 20 deletions
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@ -849,18 +849,16 @@ func (container *Container) setupContainerDns() error {
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daemon = container.daemon
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)
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if config.NetworkMode == "host" {
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container.ResolvConfPath = "/etc/resolv.conf"
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return nil
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}
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resolvConf, err := resolvconf.Get()
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if err != nil {
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return err
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}
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container.ResolvConfPath, err = container.getRootResourcePath("resolv.conf")
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if err != nil {
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return err
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}
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// If custom dns exists, then create a resolv.conf for the container
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if len(config.Dns) > 0 || len(daemon.config.Dns) > 0 || len(config.DnsSearch) > 0 || len(daemon.config.DnsSearch) > 0 {
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if config.NetworkMode != "host" && (len(config.Dns) > 0 || len(daemon.config.Dns) > 0 || len(config.DnsSearch) > 0 || len(daemon.config.DnsSearch) > 0) {
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var (
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dns = resolvconf.GetNameservers(resolvConf)
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dnsSearch = resolvconf.GetSearchDomains(resolvConf)
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@ -875,18 +873,9 @@ func (container *Container) setupContainerDns() error {
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} else if len(daemon.config.DnsSearch) > 0 {
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dnsSearch = daemon.config.DnsSearch
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}
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resolvConfPath, err := container.getRootResourcePath("resolv.conf")
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if err != nil {
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return err
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}
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container.ResolvConfPath = resolvConfPath
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return resolvconf.Build(container.ResolvConfPath, dns, dnsSearch)
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} else {
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container.ResolvConfPath = "/etc/resolv.conf"
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}
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return nil
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return ioutil.WriteFile(container.ResolvConfPath, resolvConf, 0644)
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}
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func (container *Container) initializeNetworking() error {
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@ -50,15 +50,15 @@ func prepareVolumesForContainer(container *Container) error {
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func setupMountsForContainer(container *Container) error {
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mounts := []execdriver.Mount{
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{container.ResolvConfPath, "/etc/resolv.conf", false, true},
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{container.ResolvConfPath, "/etc/resolv.conf", true, true},
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}
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if container.HostnamePath != "" {
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mounts = append(mounts, execdriver.Mount{container.HostnamePath, "/etc/hostname", false, true})
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mounts = append(mounts, execdriver.Mount{container.HostnamePath, "/etc/hostname", true, true})
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}
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if container.HostsPath != "" {
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mounts = append(mounts, execdriver.Mount{container.HostsPath, "/etc/hosts", false, true})
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mounts = append(mounts, execdriver.Mount{container.HostsPath, "/etc/hosts", true, true})
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}
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// Mount user specified volumes
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