Add values template for Event Handler helm chart (#63108)

* Add Event Handler Helm chart template

* Update docs

docs/pages/includes/configure-event-handler.mdx

@@ -64,6 +64,7 @@ Teleport event handler (=teleport.version=)
 [2] Generated sample teleport-event-handler role and user file teleport-event-handler-role.yaml
 [3] Generated sample fluentd configuration file fluent.conf
 [4] Generated plugin configuration file teleport-event-handler.toml
+[5] Generated plugin helm configuration file teleport-plugin-event-handler-values.yaml
 ```
 
 The plugin generates several setup files:
@@ -79,6 +80,7 @@ $ ls -l
 # -rw------- 1 bob bob     1766 Jul  1 11:14 server.key
 # -rw------- 1 bob bob      260 Jul  1 11:14 teleport-event-handler-role.yaml
 # -rw------- 1 bob bob      343 Jul  1 11:14 teleport-event-handler.toml
+# -rw------- 1 bob bob      343 Jul  1 11:14 teleport-plugin-event-handler-values.yaml
 ```
 
 | File(s)                            | Purpose                                                             |
@@ -87,6 +89,8 @@ $ ls -l
 | `server.crt` and `server.key`      | Fluentd server certificate and key                                  |
 | `client.crt` and `client.key`      | Fluentd client certificate and key, all signed by the generated CA  |
 | `teleport-event-handler-role.yaml` | `user` and `role` resource definitions for Teleport's event handler |
+| `teleport-event-handler.toml`      | Example event handler configuration                                 |
+| `teleport-plugin-event-handler-values.yaml` | Example event handler helm configuration                   |
 | `fluent.conf`                      | Fluentd plugin configuration                                        |
 
 <details>

integrations/event-handler/configure_cmd.go

@@ -76,6 +76,9 @@ type ConfigureCmd struct {
 	// confPath path to target plugin configuration file which contains an example plugin configuration
 	confPath string
 
+	// helmConfPath path to target plugin helm configuration file which contains an example plugin configuration
+	helmConfPath string
+
 	// mtls is the struct with generated mTLS certificates
 	mtls *MTLSCerts
 }
@@ -90,6 +93,9 @@ var (
 	//go:embed tpl/teleport-event-handler.toml.tpl
 	confTpl string
 
+	//go:embed tpl/teleport-plugin-event-handler-values.yaml.tpl
+	helmConfTpl string
+
 	//go:embed tpl/fluent.conf.tpl
 	fluentdConfTpl string
 )
@@ -110,6 +116,9 @@ const (
 	// confFileName is plugin configuration file name
 	confFileName = "teleport-event-handler.toml"
 
+	// helmConfFileName is plugin helm configuration file name
+	helmConfFileName = "teleport-plugin-event-handler-values.yaml"
+
 	// guideURL is getting started guide URL
 	guideURL = "https://goteleport.com/docs/management/export-audit-events/fluentd/"
 )
@@ -127,6 +136,7 @@ func RunConfigureCmd(cfg *ConfigureCmdConfig) error {
 		roleDefPath:        filepath.Join(cfg.Out, roleDefFileName),
 		fluentdConfPath:    filepath.Join(cfg.Out, fluentdConfFileName),
 		confPath:           filepath.Join(cfg.Out, confFileName),
+		helmConfPath:       filepath.Join(cfg.Out, helmConfFileName),
 	}
 
 	g, err := GenerateMTLSCerts(cfg.DNSNames, cfg.IP, cfg.TTL, cfg.Length)
@@ -205,6 +215,19 @@ func (c *ConfigureCmd) Run() error {
 
 	c.printStep("Generated plugin configuration file %v", path)
 
+	// Write the helm configuration file
+	err = c.writeHelmConf()
+	if err != nil {
+		return trace.Wrap(err)
+	}
+
+	path, err = c.cleanupPath(c.helmConfPath)
+	if err != nil {
+		return trace.Wrap(err)
+	}
+
+	c.printStep("Generated plugin helm configuration file %v", path)
+
 	fmt.Println()
 	fmt.Println("Follow-along with our getting started guide:")
 	fmt.Println()
@@ -360,7 +383,7 @@ func (c *ConfigureCmd) writeFluentdConf(pwd string) error {
 	return c.writeFile(c.fluentdConfPath, b.Bytes())
 }
 
-// writeFluentdConf writes fluentd config file
+// writeConf writes plugin config file
 func (c *ConfigureCmd) writeConf() error {
 	var b bytes.Buffer
 	var pipeline = struct {
@@ -378,6 +401,21 @@ func (c *ConfigureCmd) writeConf() error {
 	return c.writeFile(c.confPath, b.Bytes())
 }
 
+// writeHelmConf writes plugin helm config file
+func (c *ConfigureCmd) writeHelmConf() error {
+	var b bytes.Buffer
+	var pipeline = struct {
+		Addr string
+	}{c.Addr}
+
+	err := lib.RenderTemplate(helmConfTpl, pipeline, &b)
+	if err != nil {
+		return trace.Wrap(err)
+	}
+
+	return c.writeFile(c.helmConfPath, b.Bytes())
+}
+
 // askOverwrite asks question if the user wants to overwrite specified file if it exists
 func (c *ConfigureCmd) askOverwrite(path string) bool {
 	_, err := os.Stat(path)

integrations/event-handler/main.go

@@ -36,7 +36,7 @@ var cli CLI
 
 const (
 	// pluginName is the plugin name
-	pluginName = "Teleport event handler"
+	pluginName = "teleport-event-handler"
 
 	// pluginDescription is the plugin description
 	pluginDescription = "Forwards Teleport AuditLog to external sources"

integrations/event-handler/tpl/teleport-plugin-event-handler-values.yaml.tpl

@@ -0,0 +1,21 @@
+eventHandler:
+  storagePath: "./storage"
+  timeout: "10s"
+  batch: 20
+
+teleport:
+  address: "{{.Addr}}"
+  identitySecretName: teleport-event-handler-identity
+  identitySecretPath: identity
+
+fluentd:
+  url: "https://fluentd.fluentd.svc.cluster.local/events.log"
+  sessionUrl: "https://fluentd.fluentd.svc.cluster.local/session.log"
+  certificate:
+    secretName: "teleport-event-handler-client-tls"
+    caPath: "ca.crt"
+    certPath: "client.crt"
+    keyPath: "client.key"
+
+persistentVolumeClaim:
+  enabled: true