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kubenet: accept a list of CNI binary plugin paths

pull/8/head
Dan Williams 2018-01-23 14:03:51 -06:00
parent 69ac723b78
commit ee2ea223e7
2 changed files with 18 additions and 18 deletions
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2
cmd/kubelet/app/plugins.go
View File

@ -119,7 +119,7 @@ func ProbeNetworkPlugins(cniConfDir, cniBinDir string) []network.NetworkPlugin {
// for each existing plugin, add to the list
allPlugins = append(allPlugins, cni.ProbeNetworkPlugins(cniConfDir, []string{cniBinDir})...)
allPlugins = append(allPlugins, kubenet.NewPlugin(cniBinDir))
allPlugins = append(allPlugins, kubenet.NewPlugin([]string{cniBinDir}))
return allPlugins
}

34
pkg/kubelet/network/kubenet/kubenet_linux.go
View File

@ -66,7 +66,7 @@ const (
defaultIPAMDir = "/var/lib/cni/networks"
)
// CNI plugins required by kubenet in /opt/cni/bin or vendor directory
// CNI plugins required by kubenet in /opt/cni/bin or user-specified directory
var requiredCNIPlugins = [...]string{"bridge", "host-local", "loopback"}
type kubenetNetworkPlugin struct {
@ -91,15 +91,15 @@ type kubenetNetworkPlugin struct {
iptables utiliptables.Interface
sysctl utilsysctl.Interface
ebtables utilebtables.Interface
// vendorDir is passed by kubelet cni-bin-dir parameter.
// kubenet will search for cni binaries in DefaultCNIDir first, then continue to vendorDir.
vendorDir string
// binDirs is passed by kubelet cni-bin-dir parameter.
// kubenet will search for CNI binaries in DefaultCNIDir first, then continue to binDirs.
binDirs []string
nonMasqueradeCIDR string
podCidr string
gateway net.IP
}
func NewPlugin(networkPluginDir string) network.NetworkPlugin {
func NewPlugin(networkPluginDirs []string) network.NetworkPlugin {
protocol := utiliptables.ProtocolIpv4
execer := utilexec.New()
dbus := utildbus.New()
@ -110,7 +110,7 @@ func NewPlugin(networkPluginDir string) network.NetworkPlugin {
execer: utilexec.New(),
iptables: iptInterface,
sysctl: sysctl,
vendorDir: networkPluginDir,
binDirs: append([]string{DefaultCNIDir}, networkPluginDirs...),
hostportSyncer: hostport.NewHostportSyncer(iptInterface),
hostportManager: hostport.NewHostportManager(iptInterface),
nonMasqueradeCIDR: "10.0.0.0/8",
@ -121,9 +121,7 @@ func (plugin *kubenetNetworkPlugin) Init(host network.Host, hairpinMode kubeletc
plugin.host = host
plugin.hairpinMode = hairpinMode
plugin.nonMasqueradeCIDR = nonMasqueradeCIDR
plugin.cniConfig = &libcni.CNIConfig{
Path: []string{DefaultCNIDir, plugin.vendorDir},
}
plugin.cniConfig = &libcni.CNIConfig{Path: plugin.binDirs}
if mtu == network.UseDefaultMTU {
if link, err := findMinMTU(); err == nil {
@ -564,22 +562,24 @@ func (plugin *kubenetNetworkPlugin) Status() error {
return fmt.Errorf("Kubenet does not have netConfig. This is most likely due to lack of PodCIDR")
}
if !plugin.checkCNIPlugin() {
return fmt.Errorf("could not locate kubenet required CNI plugins %v at %q or %q", requiredCNIPlugins, DefaultCNIDir, plugin.vendorDir)
if !plugin.checkRequiredCNIPlugins() {
return fmt.Errorf("could not locate kubenet required CNI plugins %v at %q or %q", requiredCNIPlugins, plugin.binDirs)
}
return nil
}
// checkCNIPlugin returns if all kubenet required cni plugins can be found at /opt/cni/bin or user specified NetworkPluginDir.
func (plugin *kubenetNetworkPlugin) checkCNIPlugin() bool {
if plugin.checkCNIPluginInDir(DefaultCNIDir) || plugin.checkCNIPluginInDir(plugin.vendorDir) {
return true
// checkRequiredCNIPlugins returns if all kubenet required cni plugins can be found at /opt/cni/bin or user specified NetworkPluginDir.
func (plugin *kubenetNetworkPlugin) checkRequiredCNIPlugins() bool {
for _, dir := range plugin.binDirs {
if plugin.checkRequiredCNIPluginsInOneDir(dir) {
return true
}
}
return false
}
// checkCNIPluginInDir returns if all required cni plugins are placed in dir
func (plugin *kubenetNetworkPlugin) checkCNIPluginInDir(dir string) bool {
// checkRequiredCNIPluginsInOneDir returns true if all required cni plugins are placed in dir
func (plugin *kubenetNetworkPlugin) checkRequiredCNIPluginsInOneDir(dir string) bool {
files, err := ioutil.ReadDir(dir)
if err != nil {
return false