Allow Flux to be deployed on tainted Kubernetes nodes

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

pkg/manifestgen/install/install_test.go

@@ -24,6 +24,7 @@ import (
 
 func TestGenerate(t *testing.T) {
 	opts := MakeDefaultOptions()
+	opts.TolerationKeys = []string{"node.kubernetes.io/controllers"}
 	output, err := Generate(opts)
 	if err != nil {
 		t.Fatal(err)
@@ -36,5 +37,9 @@ func TestGenerate(t *testing.T) {
 		}
 	}
 
+	if !strings.Contains(output.Content, opts.TolerationKeys[0]) {
+		t.Errorf("toleration key '%s' not found", opts.TolerationKeys[0])
+	}
+
 	fmt.Println(output)
 }

pkg/manifestgen/install/options.go

@@ -35,6 +35,7 @@ type Options struct {
 	Timeout                time.Duration
 	TargetPath             string
 	ClusterDomain          string
+	TolerationKeys         []string
 }
 
 func MakeDefaultOptions() Options {

pkg/manifestgen/install/templates.go

@@ -137,6 +137,13 @@ spec:
       imagePullSecrets:
        - name: {{.ImagePullSecret}}
 {{- end }}
+{{ if gt (len .TolerationKeys) 0 }}
+      tolerations:
+{{- range $i, $key := .TolerationKeys }}
+       - key: "{{$key}}"
+         operator: "Exists"
+{{- end }}
+{{- end }}
 `
 
 var labelsTmpl = `---