feat(helm): allow cni updateStrategy to be configurable (#13562)

* [feat] allow cni updateStrategy to be configurable

* For users with large clusters rollout of the cni can take a bit of
  time. This will allow them to configure a faster rollout of the cni
resources.

#13031
Signed-off-by: Shane Starcher <[email protected]>

* add update strategy for cli

Signed-off-by: Shane Starcher <[email protected]>

---------

Signed-off-by: Shane Starcher <[email protected]>
Co-authored-by: Shane Starcher <[email protected]>

Author: sstarcher

charts/linkerd2-cni/templates/cni-plugin.yaml

@@ -199,10 +199,7 @@ spec:
   selector:
     matchLabels:
       k8s-app: linkerd-cni
-  updateStrategy:
-    type: RollingUpdate
-    rollingUpdate:
-      maxUnavailable: 1
+  updateStrategy: {{ .Values.updateStrategy | toYaml | nindent 4 }}
   template:
     metadata:
       labels:

charts/linkerd2-cni/values.yaml

@@ -39,6 +39,11 @@ disableIPv6: true
 priorityClassName: ""
 # -- Specifies the number of old ReplicaSets to retain to allow rollback.
 revisionHistoryLimit: 10
+# -- Specifies the update strategy for how the new pods are rolled out
+updateStrategy:
+  type: RollingUpdate
+  rollingUpdate:
+    maxUnavailable: 1
 
 # -- Add a PSP resource and bind it to the linkerd-cni ServiceAccounts.
 # Note PSP has been deprecated since k8s v1.21

pkg/charts/cni/values.go

@@ -46,34 +46,35 @@ type RepairController struct {
 
 // Values contains the top-level elements in the cni Helm chart
 type Values struct {
-	InboundProxyPort     uint                `json:"inboundProxyPort"`
-	OutboundProxyPort    uint                `json:"outboundProxyPort"`
-	IgnoreInboundPorts   string              `json:"ignoreInboundPorts"`
-	IgnoreOutboundPorts  string              `json:"ignoreOutboundPorts"`
-	CliVersion           string              `json:"cliVersion"`
-	Image                Image               `json:"image"`
-	LogLevel             string              `json:"logLevel"`
-	PortsToRedirect      string              `json:"portsToRedirect"`
-	ProxyUID             int64               `json:"proxyUID"`
-	ProxyGID             int64               `json:"proxyGID"`
-	DestCNINetDir        string              `json:"destCNINetDir"`
-	DestCNIBinDir        string              `json:"destCNIBinDir"`
-	UseWaitFlag          bool                `json:"useWaitFlag"`
-	PriorityClassName    string              `json:"priorityClassName"`
-	ProxyAdminPort       string              `json:"proxyAdminPort"`
-	ProxyControlPort     string              `json:"proxyControlPort"`
-	Tolerations          []interface{}       `json:"tolerations"`
-	PodLabels            map[string]string   `json:"podLabels"`
-	CommonLabels         map[string]string   `json:"commonLabels"`
-	ImagePullSecrets     []map[string]string `json:"imagePullSecrets"`
-	ExtraInitContainers  []interface{}       `json:"extraInitContainers"`
-	IptablesMode         string              `json:"iptablesMode"`
-	DisableIPv6          bool                `json:"disableIPv6"`
-	EnablePSP            bool                `json:"enablePSP"`
-	Privileged           bool                `json:"privileged"`
-	Resources            Resources           `json:"resources"`
-	RepairController     RepairController    `json:"repairController"`
-	RevisionHistoryLimit uint                `json:"revisionHistoryLimit"`
+	InboundProxyPort     uint                   `json:"inboundProxyPort"`
+	OutboundProxyPort    uint                   `json:"outboundProxyPort"`
+	IgnoreInboundPorts   string                 `json:"ignoreInboundPorts"`
+	IgnoreOutboundPorts  string                 `json:"ignoreOutboundPorts"`
+	CliVersion           string                 `json:"cliVersion"`
+	Image                Image                  `json:"image"`
+	LogLevel             string                 `json:"logLevel"`
+	PortsToRedirect      string                 `json:"portsToRedirect"`
+	ProxyUID             int64                  `json:"proxyUID"`
+	ProxyGID             int64                  `json:"proxyGID"`
+	DestCNINetDir        string                 `json:"destCNINetDir"`
+	DestCNIBinDir        string                 `json:"destCNIBinDir"`
+	UseWaitFlag          bool                   `json:"useWaitFlag"`
+	PriorityClassName    string                 `json:"priorityClassName"`
+	ProxyAdminPort       string                 `json:"proxyAdminPort"`
+	ProxyControlPort     string                 `json:"proxyControlPort"`
+	Tolerations          []interface{}          `json:"tolerations"`
+	PodLabels            map[string]string      `json:"podLabels"`
+	CommonLabels         map[string]string      `json:"commonLabels"`
+	ImagePullSecrets     []map[string]string    `json:"imagePullSecrets"`
+	ExtraInitContainers  []interface{}          `json:"extraInitContainers"`
+	IptablesMode         string                 `json:"iptablesMode"`
+	DisableIPv6          bool                   `json:"disableIPv6"`
+	EnablePSP            bool                   `json:"enablePSP"`
+	Privileged           bool                   `json:"privileged"`
+	Resources            Resources              `json:"resources"`
+	RepairController     RepairController       `json:"repairController"`
+	RevisionHistoryLimit uint                   `json:"revisionHistoryLimit"`
+	UpdateStrategy       map[string]interface{} `json:"updateStrategy"`
 }
 
 // NewValues returns a new instance of the Values type.