Add AbortOnPluginFailure option to abort startup on plugin load failure

cmd/traefik/traefik.go

@@ -238,6 +238,9 @@ func setupServer(staticConfiguration *static.Configuration) (*server.Server, err
 	}
 
 	pluginBuilder, err := createPluginBuilder(staticConfiguration)
+	if err != nil && staticConfiguration.Experimental != nil && staticConfiguration.Experimental.AbortOnPluginFailure {
+		return nil, fmt.Errorf("plugin: failed to create plugin builder: %w", err)
+	}
 	if err != nil {
 		pluginLogger.Err(err).Msg("Plugins are disabled because an error has occurred.")
 	} else if hasPlugins {

docs/content/reference/static-configuration/cli-ref.md

@@ -228,6 +228,9 @@ WriteTimeout is the maximum duration before timing out writes of the response. I
 `--entrypoints.<name>.udp.timeout`:  
 Timeout defines how long to wait on an idle session before releasing the related resources. (Default: ```3```)
 
+`--experimental.abortonpluginfailure`:  
+Defines whether all plugins must be loaded successfully for Traefik to start. (Default: ```false```)
+
 `--experimental.fastproxy`:  
 Enable the FastProxy implementation. (Default: ```false```)
 

docs/content/reference/static-configuration/env-ref.md

@@ -228,6 +228,9 @@ WriteTimeout is the maximum duration before timing out writes of the response. I
 `TRAEFIK_ENTRYPOINTS_<NAME>_UDP_TIMEOUT`:  
 Timeout defines how long to wait on an idle session before releasing the related resources. (Default: ```3```)
 
+`TRAEFIK_EXPERIMENTAL_ABORTONPLUGINFAILURE`:  
+Defines whether all plugins must be loaded successfully for Traefik to start. (Default: ```false```)
+
 `TRAEFIK_EXPERIMENTAL_FASTPROXY`:  
 Enable the FastProxy implementation. (Default: ```false```)
 

docs/content/reference/static-configuration/file.toml

@@ -488,6 +488,7 @@
     [certificatesResolvers.CertificateResolver1.tailscale]
 
 [experimental]
+  abortOnPluginFailure = true
   kubernetesGateway = true
   [experimental.plugins]
     [experimental.plugins.Descriptor0]

docs/content/reference/static-configuration/file.yaml

@@ -576,6 +576,7 @@ experimental:
         mounts:
           - foobar
           - foobar
+  abortOnPluginFailure: true
   fastProxy:
     debug: true
   kubernetesGateway: true

pkg/config/static/experimental.go

@@ -4,8 +4,9 @@ import "github.com/traefik/traefik/v3/pkg/plugins"
 
 // Experimental experimental Traefik features.
 type Experimental struct {
-	Plugins      map[string]plugins.Descriptor      `description:"Plugins configuration." json:"plugins,omitempty" toml:"plugins,omitempty" yaml:"plugins,omitempty" export:"true"`
-	LocalPlugins map[string]plugins.LocalDescriptor `description:"Local plugins configuration." json:"localPlugins,omitempty" toml:"localPlugins,omitempty" yaml:"localPlugins,omitempty" export:"true"`
+	Plugins              map[string]plugins.Descriptor      `description:"Plugins configuration." json:"plugins,omitempty" toml:"plugins,omitempty" yaml:"plugins,omitempty" export:"true"`
+	LocalPlugins         map[string]plugins.LocalDescriptor `description:"Local plugins configuration." json:"localPlugins,omitempty" toml:"localPlugins,omitempty" yaml:"localPlugins,omitempty" export:"true"`
+	AbortOnPluginFailure bool                               `description:"Defines whether all plugins must be loaded successfully for Traefik to start." json:"abortOnPluginFailure,omitempty" toml:"abortOnPluginFailure,omitempty" yaml:"abortOnPluginFailure,omitempty" export:"true"`
 
 	FastProxy *FastProxyConfig `description:"Enable the FastProxy implementation." json:"fastProxy,omitempty" toml:"fastProxy,omitempty" yaml:"fastProxy,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`