feat: Support setting run --interval via env variable. (#1107)

Signed-off-by: Denis Karpelevich <56302307+dkarpele@users.noreply.github.com>

Author: dkarpele

cmd/run.go

@@ -225,7 +225,7 @@ func newRunCommand() *cobra.Command {
 	runCmd.Flags().BoolVar(&cfg.ClientOpts.Plaintext, "argocd-plaintext", env.GetBoolVal("ARGOCD_PLAINTEXT", false), "(INSECURE) connect without TLS to ArgoCD server")
 	runCmd.Flags().StringVar(&cfg.ClientOpts.AuthToken, "argocd-auth-token", "", "use token for authenticating to ArgoCD (unsafe - consider setting ARGOCD_TOKEN env var instead)")
 	runCmd.Flags().BoolVar(&cfg.DryRun, "dry-run", false, "run in dry-run mode. If set to true, do not perform any changes")
-	runCmd.Flags().DurationVar(&cfg.CheckInterval, "interval", 2*time.Minute, "interval for how often to check for updates")
+	runCmd.Flags().DurationVar(&cfg.CheckInterval, "interval", env.GetDurationVal("IMAGE_UPDATER_INTERVAL", 2*time.Minute), "interval for how often to check for updates")
 	runCmd.Flags().StringVar(&cfg.LogLevel, "loglevel", env.GetStringVal("IMAGE_UPDATER_LOGLEVEL", "info"), "set the loglevel to one of trace|debug|info|warn|error")
 	runCmd.Flags().StringVar(&kubeConfig, "kubeconfig", "", "full path to kubernetes client configuration, i.e. ~/.kube/config")
 	runCmd.Flags().IntVar(&cfg.HealthPort, "health-port", 8080, "port to start the health server on, 0 to disable")

cmd/run_test.go

@@ -3,6 +3,7 @@ package main
 import (
 	"os"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 
@@ -23,7 +24,7 @@ func TestNewRunCommand(t *testing.T) {
 	asser.Equal(env.GetStringVal("ARGOCD_PLAINTEXT", "false"), runCmd.Flag("argocd-plaintext").Value.String())
 	asser.Equal("", runCmd.Flag("argocd-auth-token").Value.String())
 	asser.Equal("false", runCmd.Flag("dry-run").Value.String())
-	asser.Equal("2m0s", runCmd.Flag("interval").Value.String())
+	asser.Equal(env.GetDurationVal("IMAGE_UPDATER_INTERVAL", 2*time.Minute).String(), runCmd.Flag("interval").Value.String())
 	asser.Equal(env.GetStringVal("IMAGE_UPDATER_LOGLEVEL", "info"), runCmd.Flag("loglevel").Value.String())
 	asser.Equal("", runCmd.Flag("kubeconfig").Value.String())
 	asser.Equal("8080", runCmd.Flag("health-port").Value.String())

docs/install/reference.md

@@ -94,6 +94,15 @@ is given, milliseconds will be assumed. If set to `0`, ArgoCD Image Updater
 will exit after the first run, effectively disabling the interval. Default
 value is `2m0s`.
 
+Can also be set using the *IMAGE_UPDATER_INTERVAL* environment variable.
+The `--interval` flag takes precedence over the `IMAGE_UPDATER_INTERVAL` environment variable.
+
+The order of precedence for determining the update interval is as follows:
+
+1.  **`--interval` flag:** If the `--interval` command-line flag is provided, its value will be used.
+2.  **`IMAGE_UPDATER_INTERVAL` environment variable:** If the `--interval` flag is not set, the value of the `IMAGE_UPDATER_INTERVAL` environment variable will be used.
+3.  **Default value:** If neither the `--interval` flag nor the `IMAGE_UPDATER_INTERVAL` environment variable is set, the default value will be used.
+
 **--kubeconfig *path* **
 
 Specify the Kubernetes client config file to use when running outside a

go.mod

@@ -3,7 +3,7 @@ module github.com/argoproj-labs/argocd-image-updater
 go 1.23.5
 
 require (
-	github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.1.0
+	github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.0.0-20250421211119-90959ebfd519
 	github.com/argoproj/argo-cd/v2 v2.13.6
 	github.com/argoproj/gitops-engine v0.7.1-0.20250129155113-4c6e03c46314
 	github.com/argoproj/pkg v0.13.7-0.20230627120311-a4dd357b057e
@@ -111,7 +111,7 @@ require (
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/opencontainers/image-spec v1.1.0 // indirect
+	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/pjbgf/sha1cd v0.3.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect

go.sum

@@ -27,8 +27,8 @@ github.com/alicebob/miniredis/v2 v2.33.0/go.mod h1:MhP4a3EU7aENRi9aO+tHfTBZicLqQ
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.1.0 h1:rmDEfeamrRPB/HCah+LQl0OGmkzggUzIPrKMDbiqSPY=
-github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.1.0/go.mod h1:/WY/g4x5PSJlWeKcIx36LXQ2Ds3wR+KS9zJjtIPH+pk=
+github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.0.0-20250421211119-90959ebfd519 h1:URnrR3+5zLMkj2o10MbSE0aocgxBAUHtXKQo9cUiAro=
+github.com/argoproj-labs/argocd-image-updater/registry-scanner v0.0.0-20250421211119-90959ebfd519/go.mod h1:5kPCfISgNKi7q1bKdf35qP7AAJuNy35E8cqA1NeT5AU=
 github.com/argoproj/argo-cd/v2 v2.13.6 h1:AoOaNidqkGgnH/prgbLp5PyFxBU0UGJUGdXJw+UDvqM=
 github.com/argoproj/argo-cd/v2 v2.13.6/go.mod h1:+PE6B/sg2+vq7/WFMvc+eK3hVRnQNNYcExZKLqfXRyU=
 github.com/argoproj/gitops-engine v0.7.1-0.20250129155113-4c6e03c46314 h1:UIM6b4b/eNmWLwnsaJNmLzcm0qjHCuyHTuJKeIq2WeE=
@@ -395,8 +395,8 @@ github.com/onsi/gomega v1.35.1 h1:Cwbd75ZBPxFSuZ6T+rN/WCb/gOc6YgFBXLlZLhC7Ds4=
 github.com/onsi/gomega v1.35.1/go.mod h1:PvZbdDc8J6XJEpDK4HCuRBm8a6Fzp9/DmhC9C7yFlog=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
-github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=
-github.com/opencontainers/image-spec v1.1.0/go.mod h1:W4s4sFTMaBeK1BQLXbG4AdM2szdn85PY75RI83NrTrM=
+github.com/opencontainers/image-spec v1.1.1 h1:y0fUlFfIZhPF1W537XOLg0/fcx6zcHCJwooC2xJA040=
+github.com/opencontainers/image-spec v1.1.1/go.mod h1:qpqAh3Dmcf36wStyyWU+kCeDgrGnAve2nCC8+7h8Q0M=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/orisano/pixelmatch v0.0.0-20220722002657-fb0b55479cde/go.mod h1:nZgzbfBr3hhjoZnS66nKrHmduYNpc34ny7RK4z5/HM0=
 github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=

manifests/base/deployment/argocd-image-updater-deployment.yaml

@@ -59,6 +59,12 @@ spec:
               name: argocd-image-updater-secret
               key: argocd.token
               optional: true
+        - name: IMAGE_UPDATER_INTERVAL
+          valueFrom:
+            configMapKeyRef:
+              key: interval
+              name: argocd-image-updater-config
+              optional: true
         - name: IMAGE_UPDATER_LOGLEVEL
           valueFrom:
             configMapKeyRef:

manifests/install.yaml

@@ -167,6 +167,12 @@ spec:
               key: argocd.token
               name: argocd-image-updater-secret
               optional: true
+        - name: IMAGE_UPDATER_INTERVAL
+          valueFrom:
+            configMapKeyRef:
+              key: interval
+              name: argocd-image-updater-config
+              optional: true
         - name: IMAGE_UPDATER_LOGLEVEL
           valueFrom:
             configMapKeyRef: