tail all container log files

kubelet creates a new log file when a container is restarted.
So we need to catpure all log files in the
`/var/logs/pods/<uid>/<container_name>/` dir.

production/helm/templates/promtail/configmap.yaml

@@ -42,7 +42,7 @@ data:
           target_label: container_name
         - action: labelmap
           regex: __meta_kubernetes_pod_label_(.+)
-        - replacement: /var/log/pods/$1/0.log
+        - replacement: /var/log/pods/$1/*.log
           separator: /
           source_labels:
           - __meta_kubernetes_pod_uid
@@ -80,7 +80,7 @@ data:
           target_label: container_name
         - action: labelmap
           regex: __meta_kubernetes_pod_label_(.+)
-        - replacement: /var/log/pods/$1/0.log
+        - replacement: /var/log/pods/$1/*.log
           separator: /
           source_labels:
           - __meta_kubernetes_pod_uid

production/ksonnet/promtail/promtail.libsonnet

@@ -104,7 +104,7 @@ k {
             source_labels: ['__meta_kubernetes_pod_uid', '__meta_kubernetes_pod_container_name'],
             target_label: '__path__',
             separator: '/',
-            replacement: '/var/log/pods/$1/0.log',
+            replacement: '/var/log/pods/$1/*.log',
           },
         ],
       },
@@ -170,7 +170,7 @@ k {
             source_labels: ['__meta_kubernetes_pod_uid', '__meta_kubernetes_pod_container_name'],
             target_label: '__path__',
             separator: '/',
-            replacement: '/var/log/pods/$1/0.log',
+            replacement: '/var/log/pods/$1/*.log',
           },
         ],
       },

tools/promtail.sh

@@ -48,7 +48,7 @@ data:
         target_label: container_name
       - action: labelmap
         regex: __meta_kubernetes_pod_label_(.+)
-      - replacement: /var/log/pods/$1/0.log
+      - replacement: /var/log/pods/$1/*.log
         separator: /
         source_labels:
         - __meta_kubernetes_pod_uid
@@ -86,7 +86,7 @@ data:
         target_label: container_name
       - action: labelmap
         regex: __meta_kubernetes_pod_label_(.+)
-      - replacement: /var/log/pods/$1/0.log
+      - replacement: /var/log/pods/$1/*.log
         separator: /
         source_labels:
         - __meta_kubernetes_pod_uid