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Ensure openshift start network can run in a pod
Need to be able to take node-config from bootstrap node. For openshift start network the --kubeconfig flag from the CLI overrides the value of masterKubeConfig in the provided node config. If the value is empty (like it is by default) the in-cluster-config is used. Reorganize the node startup slightly so there is even less overlap between kubelet and network. A future change will completely separate these two initialization paths.
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Original file line number | Diff line number | Diff line change |
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package node | ||
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import ( | ||
"fmt" | ||
"net" | ||
"time" | ||
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
kerrors "k8s.io/apimachinery/pkg/util/errors" | ||
kubeproxyoptions "k8s.io/kubernetes/cmd/kube-proxy/app" | ||
"k8s.io/kubernetes/pkg/apis/componentconfig" | ||
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configapi "github.com/openshift/origin/pkg/cmd/server/api" | ||
cmdflags "github.com/openshift/origin/pkg/cmd/util/flags" | ||
) | ||
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// Build creates the network Kubernetes component configs for a given NodeConfig, or returns | ||
// an error | ||
func Build(options configapi.NodeConfig) (*componentconfig.KubeProxyConfiguration, error) { | ||
proxyOptions, err := kubeproxyoptions.NewOptions() | ||
if err != nil { | ||
return nil, err | ||
} | ||
// get default config | ||
proxyconfig := proxyOptions.GetConfig() | ||
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proxyconfig.HostnameOverride = options.NodeName | ||
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// BindAddress - Override default bind address from our config | ||
addr := options.ServingInfo.BindAddress | ||
host, _, err := net.SplitHostPort(addr) | ||
if err != nil { | ||
return nil, fmt.Errorf("The provided value to bind to must be an ip:port %q", addr) | ||
} | ||
ip := net.ParseIP(host) | ||
if ip == nil { | ||
return nil, fmt.Errorf("The provided value to bind to must be an ip:port: %q", addr) | ||
} | ||
proxyconfig.BindAddress = ip.String() | ||
// MetricsBindAddress - disable by default but allow enablement until we switch to | ||
// reading proxy config directly | ||
proxyconfig.MetricsBindAddress = "" | ||
if arg := options.ProxyArguments["metrics-bind-address"]; len(arg) > 0 { | ||
proxyconfig.MetricsBindAddress = arg[0] | ||
} | ||
delete(options.ProxyArguments, "metrics-bind-address") | ||
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// OOMScoreAdj, ResourceContainer - clear, we don't run in a container | ||
oomScoreAdj := int32(0) | ||
proxyconfig.OOMScoreAdj = &oomScoreAdj | ||
proxyconfig.ResourceContainer = "" | ||
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// use the same client as the node | ||
proxyconfig.ClientConnection.KubeConfigFile = options.MasterKubeConfig | ||
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// ProxyMode, set to iptables | ||
proxyconfig.Mode = "iptables" | ||
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// IptablesSyncPeriod, set to our config value | ||
syncPeriod, err := time.ParseDuration(options.IPTablesSyncPeriod) | ||
if err != nil { | ||
return nil, fmt.Errorf("Cannot parse the provided ip-tables sync period (%s) : %v", options.IPTablesSyncPeriod, err) | ||
} | ||
proxyconfig.IPTables.SyncPeriod = metav1.Duration{ | ||
Duration: syncPeriod, | ||
} | ||
masqueradeBit := int32(0) | ||
proxyconfig.IPTables.MasqueradeBit = &masqueradeBit | ||
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// PortRange, use default | ||
// HostnameOverride, use default | ||
// ConfigSyncPeriod, use default | ||
// MasqueradeAll, use default | ||
// CleanupAndExit, use default | ||
// KubeAPIQPS, use default, doesn't apply until we build a separate client | ||
// KubeAPIBurst, use default, doesn't apply until we build a separate client | ||
// UDPIdleTimeout, use default | ||
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// Resolve cmd flags to add any user overrides | ||
if err := cmdflags.Resolve(options.ProxyArguments, proxyOptions.AddFlags); len(err) > 0 { | ||
return nil, kerrors.NewAggregate(err) | ||
} | ||
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if err := proxyOptions.Complete(); err != nil { | ||
return nil, err | ||
} | ||
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return proxyconfig, nil | ||
} |
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