Add plugins that fail on the node.

tools/munin-node-from-hell/basic.conf

@@ -8,7 +8,7 @@ pluginprofile = basic
 port = 4001
 
 [pluginprofile:basic]
-plugins = graph_area
+plugins = graph_area, failing_plugin, failing_plugin2, failing_plugin3
 
 [base]
 # when building an example config with --muninconf, what hostname to output.

tools/munin-node-from-hell/muninnode-from-hell

@@ -110,6 +110,38 @@ class always_critical(always_warning):
         return self.conftext.replace("LEVEL","critical")
 modules["always_critical"] = always_critical()
 
+class failing_plugin(MuninPlugin):
+    "A really broken plugin"
+    def fetch(self, conf):
+        return "# Bad exit"
+
+    def config(self, conf):
+        return "# Bad exit"
+modules["failing_plugin"] = failing_plugin()
+
+class failing_plugin2(MuninPlugin):
+    def fetch(self, conf):
+        return "# Bad exit"
+
+    def config(self, conf):
+        return """graph_title Config works, fetch fails
+graph_vlabel Level
+graph_category failing
+generic.label generic_label_here
+generic.info never_really_used"""
+modules["failing_plugin2"] = failing_plugin2()
+
+class failing_plugin3(MuninPlugin):
+    def config(self, conf):
+        return """graph_title A plugin with two dses but only fetch value for one
+graph_args --base 1000 -l 0
+fivemin.label 1 minute load
+onemin.label 5 minute load"""
+    def fetch(self, conf):
+        return "onemin.value 1"
+modules["failing_plugin3"] = failing_plugin3()
+
+
 class graph_area(MuninPlugin):
     "A plugin that uses STACK and AREA. From proc_pri. Use: testing the grapher"
     def fetch(self, conf):