Fix the logger not working (#1166)

charts/fission-all/templates/fluentbit.yaml

@@ -32,6 +32,14 @@ spec:
       labels:
         svc: logger
     spec:
+      initContainers:
+        - name: init
+          image: busybox
+          command: ['mkdir', '-p', '/var/log/fission']
+          volumeMounts:
+            - name: container-log
+              mountPath: /var/log/
+              readOnly: false
       containers:
         - name: logger
           image: "{{ .Values.repository }}/{{ .Values.image }}:{{ .Values.imageTag }}"
@@ -78,7 +86,7 @@ spec:
           volumeMounts:
             - name: container-log
               mountPath: /var/log/
-              readOnly: true
+              readOnly: false
             - name: docker-log
               mountPath: /var/lib/docker/containers
               readOnly: true

logger/logger.go

@@ -170,6 +170,14 @@ func Start() {
 	}
 	defer zapLogger.Sync()
 
+	if _, err := os.Stat(fissionSymlinkPath); os.IsNotExist(err) {
+		zapLogger.Info("symlink path not exist, create it",
+			zap.String("fissionSymlinkPath", fissionSymlinkPath))
+		err = os.Mkdir(fissionSymlinkPath, 0755)
+		if err != nil {
+			zapLogger.Fatal("error creating fissionSymlinkPath", zap.Error(err))
+		}
+	}
 	go symlinkReaper(zapLogger)
 	_, kubernetesClient, _, err := crd.MakeFissionClient()
 	if err != nil {