Multiple namespaces feature

README.md

@@ -333,7 +333,7 @@ resource:
  secret: false
  configmap: false
  ingress: false
-namespace: ""
+namespace: []
 
 ```
 
@@ -418,6 +418,12 @@ $ kubewatch resource add --rc --po --svc
 $ kubewatch resource remove --rc --po --svc
 ```
 
+## Namespaces
+
+If a specific set of namespaces need to be applied to the filter, that can be done with the namepace configuration as shown in the [example config ](examples/conf/kubewatch.conf.multiple.namespaces.yaml).
+
+This functionality can be useful for clusters where one is not admin and is merely a tennant.
+
 # Build
 
 ### Using go

config/config.go

@@ -77,7 +77,7 @@ type Config struct {
 
  // For watching specific namespace, leave it empty for watching all.
  // this config is ignored when watching namespaces
- Namespace string `json:"namespace,omitempty"`
+ Namespace []string `json:"namespace,omitempty"`
 }
 
 // Slack contains slack configuration

config/sample.go

@@ -71,7 +71,7 @@ resource:
  secret: false
  configmap: false
  ing: false
-# For watching specific namespace, leave it empty for watching all.
+# For watching specific array of namespaces, leave it empty for watching all.
 # this config is ignored when watching namespaces
-namespace: ""
+namespace: []
 `

examples/conf/kubewatch.conf.msteams.yaml

@@ -4,7 +4,7 @@ metadata:
  name: kubewatch
 data:
  .kubewatch.yaml: |
- namespace:
+ namespace: []
  handler:
  msteams:
  webhookurl: https://outlook.office.com/webhook/...

examples/conf/kubewatch.conf.multiple.namespaces.yaml

@@ -0,0 +1,23 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+ name: kubewatch
+data:
+ .kubewatch.yaml: |
+ namespace:
+ - namespaceOne
+ - namespaceTwo
+ handler:
+ slack:
+ token: xxx
+ channel: xxx
+ resource:
+ namespace: false
+ deployment: false
+ replicationcontroller: false
+ replicaset: false
+ daemonset: false
+ services: false
+ pod: true
+ secret: false
+ configmap: false

kubewatch-configmap.yaml

@@ -4,7 +4,7 @@ metadata:
  name: kubewatch
 data:
  .kubewatch.yaml: |
- namespace: ""
+ namespace: []
  handler:
  slack:
  token: <token>

pkg/client/run.go

@@ -18,6 +18,9 @@ package client
 
 import (
  "log"
+ "os"
+ "os/signal"
+ "syscall"
 
  "github.com/bitnami-labs/kubewatch/config"
  "github.com/bitnami-labs/kubewatch/pkg/controller"
@@ -35,7 +38,21 @@ import (
 func Run(conf *config.Config) {
 
  var eventHandler = ParseEventHandler(conf)
- controller.Start(conf, eventHandler)
+ // Setting an empty namespace value in case config is empty
+ // If no specific namespace is defined cluster scope is taken
+ if len(conf.Namespace) == 0 {
+ conf.Namespace = append(conf.Namespace, "")
+ }
+ // Create a controler
+ go controller.StartClusterScope(conf, eventHandler)
+ // For each namespace in array create a controller
+ for _, ns := range conf.Namespace {
+ go controller.StartNamespaceScope(conf, eventHandler, ns)
+ }
+ sigterm := make(chan os.Signal, 1)
+ signal.Notify(sigterm, syscall.SIGTERM)
+ signal.Notify(sigterm, syscall.SIGINT)
+ <-sigterm
 }
 
 // ParseEventHandler returns the respective handler object specified in the config file.