764cb5a76e
This adds two concepts, where one encompasses the other. Startup timeout Startup timeout is how long to wait for the entire kubelet to get into a functional state. Right now, this only waits for the pod informer cache for the pod controllerto become in-sync with API server, but this could be extended to other informers (like secrets informer). Wait For Startup This changes the behaviour of the virtual kubelet to wait for the pod controller to start before registering the node. It is to avoid the race condition where the node is registered, but we cannot actually do any pod operations.
91 lines
3.6 KiB
Go
91 lines
3.6 KiB
Go
// Copyright © 2017 The virtual-kubelet authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package root
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import (
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"fmt"
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"os"
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"strings"
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"github.com/pkg/errors"
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"github.com/spf13/pflag"
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"github.com/virtual-kubelet/virtual-kubelet/trace/opencensus"
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)
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type mapVar map[string]string
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func (mv mapVar) String() string {
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var s string
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for k, v := range mv {
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if s == "" {
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s = fmt.Sprintf("%s=%v", k, v)
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} else {
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s += fmt.Sprintf(", %s=%v", k, v)
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}
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}
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return s
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}
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func (mv mapVar) Set(s string) error {
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split := strings.SplitN(s, "=", 2)
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if len(split) != 2 {
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return errors.Errorf("invalid format, must be `key=value`: %s", s)
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}
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_, ok := mv[split[0]]
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if ok {
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return errors.Errorf("duplicate key: %s", split[0])
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}
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mv[split[0]] = split[1]
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return nil
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}
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func (mv mapVar) Type() string {
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return "map"
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}
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func installFlags(flags *pflag.FlagSet, c *Opts) {
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flags.StringVar(&c.KubeConfigPath, "kubeconfig", c.KubeConfigPath, "kube config file to use for connecting to the Kubernetes API server")
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flags.StringVar(&c.KubeNamespace, "namespace", c.KubeNamespace, "kubernetes namespace (default is 'all')")
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flags.StringVar(&c.NodeName, "nodename", c.NodeName, "kubernetes node name")
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flags.StringVar(&c.OperatingSystem, "os", c.OperatingSystem, "Operating System (Linux/Windows)")
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flags.StringVar(&c.Provider, "provider", c.Provider, "cloud provider")
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flags.StringVar(&c.ProviderConfigPath, "provider-config", c.ProviderConfigPath, "cloud provider configuration file")
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flags.StringVar(&c.MetricsAddr, "metrics-addr", c.MetricsAddr, "address to listen for metrics/stats requests")
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flags.StringVar(&c.TaintKey, "taint", c.TaintKey, "Set node taint key")
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flags.BoolVar(&c.DisableTaint, "disable-taint", c.DisableTaint, "disable the virtual-kubelet node taint")
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flags.MarkDeprecated("taint", "Taint key should now be configured using the VK_TAINT_KEY environment variable")
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flags.IntVar(&c.PodSyncWorkers, "pod-sync-workers", c.PodSyncWorkers, `set the number of pod synchronization workers`)
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flags.BoolVar(&c.EnableNodeLease, "enable-node-lease", c.EnableNodeLease, `use node leases (1.13) for node heartbeats`)
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flags.StringSliceVar(&c.TraceExporters, "trace-exporter", c.TraceExporters, fmt.Sprintf("sets the tracing exporter to use, available exporters: %s", opencensus.AvailableTraceExporters()))
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flags.StringVar(&c.TraceConfig.ServiceName, "trace-service-name", c.TraceConfig.ServiceName, "sets the name of the service used to register with the trace exporter")
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flags.Var(mapVar(c.TraceConfig.Tags), "trace-tag", "add tags to include with traces in key=value form")
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flags.StringVar(&c.TraceSampleRate, "trace-sample-rate", c.TraceSampleRate, "set probability of tracing samples")
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flags.DurationVar(&c.InformerResyncPeriod, "full-resync-period", c.InformerResyncPeriod, "how often to perform a full resync of pods between kubernetes and the provider")
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flags.DurationVar(&c.StartupTimeout, "startup-timeout", c.StartupTimeout, "How long to wait for the virtual-kubelet to start")
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}
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func getEnv(key, defaultValue string) string {
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value, found := os.LookupEnv(key)
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if found {
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return value
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}
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return defaultValue
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}
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