mirror of
https://github.com/argoproj/argo-cd
synced 2026-04-22 01:17:16 +00:00
183 lines
8.4 KiB
Go
183 lines
8.4 KiB
Go
package commands
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import (
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"context"
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"fmt"
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"math"
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"time"
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"github.com/argoproj/pkg/stats"
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"github.com/go-redis/redis/v8"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/clientcmd"
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cmdutil "github.com/argoproj/argo-cd/v2/cmd/util"
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"github.com/argoproj/argo-cd/v2/common"
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"github.com/argoproj/argo-cd/v2/controller"
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"github.com/argoproj/argo-cd/v2/controller/sharding"
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"github.com/argoproj/argo-cd/v2/pkg/apis/application/v1alpha1"
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appclientset "github.com/argoproj/argo-cd/v2/pkg/client/clientset/versioned"
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"github.com/argoproj/argo-cd/v2/reposerver/apiclient"
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cacheutil "github.com/argoproj/argo-cd/v2/util/cache"
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appstatecache "github.com/argoproj/argo-cd/v2/util/cache/appstate"
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"github.com/argoproj/argo-cd/v2/util/cli"
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"github.com/argoproj/argo-cd/v2/util/env"
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"github.com/argoproj/argo-cd/v2/util/errors"
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kubeutil "github.com/argoproj/argo-cd/v2/util/kube"
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"github.com/argoproj/argo-cd/v2/util/settings"
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"github.com/argoproj/argo-cd/v2/util/tls"
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)
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const (
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// CLIName is the name of the CLI
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cliName = "argocd-application-controller"
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// Default time in seconds for application resync period
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defaultAppResyncPeriod = 180
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)
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func NewCommand() *cobra.Command {
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var (
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clientConfig clientcmd.ClientConfig
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appResyncPeriod int64
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repoServerAddress string
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repoServerTimeoutSeconds int
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selfHealTimeoutSeconds int
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statusProcessors int
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operationProcessors int
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glogLevel int
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metricsPort int
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metricsCacheExpiration time.Duration
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kubectlParallelismLimit int64
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cacheSrc func() (*appstatecache.Cache, error)
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redisClient *redis.Client
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repoServerPlaintext bool
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repoServerStrictTLS bool
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)
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var command = cobra.Command{
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Use: cliName,
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Short: "Run ArgoCD Application Controller",
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Long: "ArgoCD application controller is a Kubernetes controller that continuously monitors running applications and compares the current, live state against the desired target state (as specified in the repo). This command runs Application Controller in the foreground. It can be configured by following options.",
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DisableAutoGenTag: true,
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RunE: func(c *cobra.Command, args []string) error {
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cli.SetLogFormat(cmdutil.LogFormat)
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cli.SetLogLevel(cmdutil.LogLevel)
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cli.SetGLogLevel(glogLevel)
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config, err := clientConfig.ClientConfig()
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errors.CheckError(err)
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errors.CheckError(v1alpha1.SetK8SConfigDefaults(config))
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kubeClient := kubernetes.NewForConfigOrDie(config)
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appClient := appclientset.NewForConfigOrDie(config)
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namespace, _, err := clientConfig.Namespace()
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errors.CheckError(err)
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var resyncDuration time.Duration
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if appResyncPeriod == 0 {
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// Re-sync should be disabled if period is 0. Set duration to a very long duration
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resyncDuration = time.Hour * 24 * 365 * 100
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} else {
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resyncDuration = time.Duration(appResyncPeriod) * time.Second
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}
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tlsConfig := apiclient.TLSConfiguration{
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DisableTLS: repoServerPlaintext,
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StrictValidation: repoServerStrictTLS,
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}
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// Load CA information to use for validating connections to the
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// repository server, if strict TLS validation was requested.
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if !repoServerPlaintext && repoServerStrictTLS {
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pool, err := tls.LoadX509CertPool(
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fmt.Sprintf("%s/controller/tls/tls.crt", env.StringFromEnv(common.EnvAppConfigPath, common.DefaultAppConfigPath)),
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fmt.Sprintf("%s/controller/tls/ca.crt", env.StringFromEnv(common.EnvAppConfigPath, common.DefaultAppConfigPath)),
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)
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if err != nil {
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log.Fatalf("%v", err)
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}
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tlsConfig.Certificates = pool
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}
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repoClientset := apiclient.NewRepoServerClientset(repoServerAddress, repoServerTimeoutSeconds, tlsConfig)
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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cache, err := cacheSrc()
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errors.CheckError(err)
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cache.Cache.SetClient(cacheutil.NewTwoLevelClient(cache.Cache.GetClient(), 10*time.Minute))
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settingsMgr := settings.NewSettingsManager(ctx, kubeClient, namespace)
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kubectl := kubeutil.NewKubectl()
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clusterFilter := getClusterFilter()
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appController, err := controller.NewApplicationController(
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namespace,
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settingsMgr,
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kubeClient,
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appClient,
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repoClientset,
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cache,
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kubectl,
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resyncDuration,
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time.Duration(selfHealTimeoutSeconds)*time.Second,
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metricsPort,
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metricsCacheExpiration,
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kubectlParallelismLimit,
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clusterFilter)
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errors.CheckError(err)
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cacheutil.CollectMetrics(redisClient, appController.GetMetricsServer())
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vers := common.GetVersion()
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log.Infof("Application Controller (version: %s, built: %s) starting (namespace: %s)", vers.Version, vers.BuildDate, namespace)
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stats.RegisterStackDumper()
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stats.StartStatsTicker(10 * time.Minute)
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stats.RegisterHeapDumper("memprofile")
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go appController.Run(ctx, statusProcessors, operationProcessors)
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// Wait forever
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select {}
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},
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}
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clientConfig = cli.AddKubectlFlagsToCmd(&command)
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command.Flags().Int64Var(&appResyncPeriod, "app-resync", int64(env.ParseDurationFromEnv("ARGOCD_RECONCILIATION_TIMEOUT", defaultAppResyncPeriod*time.Second, 0, math.MaxInt64).Seconds()), "Time period in seconds for application resync.")
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command.Flags().StringVar(&repoServerAddress, "repo-server", env.StringFromEnv("ARGOCD_APPLICATION_CONTROLLER_REPO_SERVER", common.DefaultRepoServerAddr), "Repo server address.")
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command.Flags().IntVar(&repoServerTimeoutSeconds, "repo-server-timeout-seconds", env.ParseNumFromEnv("ARGOCD_APPLICATION_CONTROLLER_REPO_SERVER_TIMEOUT_SECONDS", 60, 0, math.MaxInt64), "Repo server RPC call timeout seconds.")
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command.Flags().IntVar(&statusProcessors, "status-processors", env.ParseNumFromEnv("ARGOCD_APPLICATION_CONTROLLER_STATUS_PROCESSORS", 20, 0, math.MaxInt32), "Number of application status processors")
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command.Flags().IntVar(&operationProcessors, "operation-processors", env.ParseNumFromEnv("ARGOCD_APPLICATION_CONTROLLER_OPERATION_PROCESSORS", 10, 0, math.MaxInt32), "Number of application operation processors")
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command.Flags().StringVar(&cmdutil.LogFormat, "logformat", env.StringFromEnv("ARGOCD_APPLICATION_CONTROLLER_LOGFORMAT", "text"), "Set the logging format. One of: text|json")
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command.Flags().StringVar(&cmdutil.LogLevel, "loglevel", env.StringFromEnv("ARGOCD_APPLICATION_CONTROLLER_LOGLEVEL", "info"), "Set the logging level. One of: debug|info|warn|error")
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command.Flags().IntVar(&glogLevel, "gloglevel", 0, "Set the glog logging level")
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command.Flags().IntVar(&metricsPort, "metrics-port", common.DefaultPortArgoCDMetrics, "Start metrics server on given port")
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command.Flags().DurationVar(&metricsCacheExpiration, "metrics-cache-expiration", env.ParseDurationFromEnv("ARGOCD_APPLICATION_CONTROLLER_METRICS_CACHE_EXPIRATION", 0*time.Second, 0, math.MaxInt64), "Prometheus metrics cache expiration (disabled by default. e.g. 24h0m0s)")
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command.Flags().IntVar(&selfHealTimeoutSeconds, "self-heal-timeout-seconds", env.ParseNumFromEnv("ARGOCD_APPLICATION_CONTROLLER_SELF_HEAL_TIMEOUT_SECONDS", 5, 0, math.MaxInt32), "Specifies timeout between application self heal attempts")
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command.Flags().Int64Var(&kubectlParallelismLimit, "kubectl-parallelism-limit", 20, "Number of allowed concurrent kubectl fork/execs. Any value less the 1 means no limit.")
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command.Flags().BoolVar(&repoServerPlaintext, "repo-server-plaintext", env.ParseBoolFromEnv("ARGOCD_APPLICATION_CONTROLLER_REPO_SERVER_PLAINTEXT", false), "Disable TLS on connections to repo server")
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command.Flags().BoolVar(&repoServerStrictTLS, "repo-server-strict-tls", env.ParseBoolFromEnv("ARGOCD_APPLICATION_CONTROLLER_REPO_SERVER_STRICT_TLS", false), "Whether to use strict validation of the TLS cert presented by the repo server")
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cacheSrc = appstatecache.AddCacheFlagsToCmd(&command, func(client *redis.Client) {
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redisClient = client
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})
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return &command
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}
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func getClusterFilter() func(cluster *v1alpha1.Cluster) bool {
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replicas := env.ParseNumFromEnv(common.EnvControllerReplicas, 0, 0, math.MaxInt32)
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shard := env.ParseNumFromEnv(common.EnvControllerShard, -1, -math.MaxInt32, math.MaxInt32)
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var clusterFilter func(cluster *v1alpha1.Cluster) bool
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if replicas > 1 {
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if shard < 0 {
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var err error
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shard, err = sharding.InferShard()
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errors.CheckError(err)
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}
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log.Infof("Processing clusters from shard %d", shard)
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clusterFilter = sharding.GetClusterFilter(replicas, shard)
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} else {
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log.Info("Processing all cluster shards")
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}
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return clusterFilter
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}
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