update fluentd deployment and configmap

roles/download/defaults/main.yml

@@ -133,8 +133,8 @@ test_image_tag: latest
 elasticsearch_version: "v5.6.4"
 elasticsearch_image_repo: "k8s.gcr.io/elasticsearch"
 elasticsearch_image_tag: "{{ elasticsearch_version }}"
-fluentd_version: "1.22"
+fluentd_version: "v2.0.4"
-fluentd_image_repo: "gcr.io/google_containers/fluentd-elasticsearch"
+fluentd_image_repo: "k8s.gcr.io/fluentd-elasticsearch"
 fluentd_image_tag: "{{ fluentd_version }}"
 kibana_version: "5.6.4"
 kibana_image_repo: "docker.elastic.co/kibana/kibana"

roles/kubernetes-apps/efk/fluentd/defaults/main.yml

@@ -1,7 +1,7 @@
 ---
 fluentd_cpu_limit: 0m
-fluentd_mem_limit: 200Mi
+fluentd_mem_limit: 500Mi
 fluentd_cpu_requests: 100m
 fluentd_mem_requests: 200Mi
-fluentd_config_dir: /etc/kubernetes/fluentd
+fluentd_config_dir: /etc/fluent/config.d
-fluentd_config_file: fluentd.conf
+# fluentd_config_file: fluentd.conf

roles/kubernetes-apps/efk/fluentd/templates/fluentd-config.yml.j2

@@ -1,10 +1,19 @@
+---
+# https://raw.githubusercontent.com/kubernetes/kubernetes/release-1.10/cluster/addons/fluentd-elasticsearch/fluentd-es-configmap.yaml
 apiVersion: v1
 kind: ConfigMap
 metadata:
   name: fluentd-config
   namespace: "kube-system"
+  labels:
+    addonmanager.kubernetes.io/mode: Reconcile
 data:
-  {{ fluentd_config_file }}: |
+  system.conf: |-
+    <system>
+      root_dir /tmp/fluentd-buffers/
+    </system>
+
+  containers.input.conf: |-
     # This configuration file for Fluentd / td-agent is used
     # to watch changes to Docker log files. The kubelet creates symlinks that
     # capture the pod name, namespace, container name & Docker container ID
@@ -18,7 +27,6 @@ data:
     # See https://github.com/uken/fluent-plugin-elasticsearch &
     # https://github.com/fabric8io/fluent-plugin-kubernetes_metadata_filter for
     # more information about the plugins.
-    # Maintainer: Jimmi Dyson <jimmidyson@gmail.com>
     #
     # Example
     # =======
@@ -99,63 +107,87 @@ data:
     # This makes it easier for users to search for logs by pod name or by
     # the name of the Kubernetes container regardless of how many times the
     # Kubernetes pod has been restarted (resulting in a several Docker container IDs).
-    #
+
-    # TODO: Propagate the labels associated with a container along with its logs
+    # Json Log Example:
-    # so users can query logs using labels as well as or instead of the pod name
-    # and container name. This is simply done via configuration of the Kubernetes
-    # fluentd plugin but requires secrets to be enabled in the fluent pod. This is a
-    # problem yet to be solved as secrets are not usable in static pods which the fluentd
-    # pod must be until a per-node controller is available in Kubernetes.
-    # Prevent fluentd from handling records containing its own logs. Otherwise
-    # it can lead to an infinite loop, when error in sending one message generates
-    # another message which also fails to be sent and so on.
-    <match fluent.**>
-      type null
-    </match>
-    # Example:
     # {"log":"[info:2016-02-16T16:04:05.930-08:00] Some log text here\n","stream":"stdout","time":"2016-02-17T00:04:05.931087621Z"}
+    # CRI Log Example:
+    # 2016-02-17T00:04:05.931087621Z stdout F [info:2016-02-16T16:04:05.930-08:00] Some log text here
     <source>
-      type tail
+      @id fluentd-containers.log
+      @type tail
       path /var/log/containers/*.log
       pos_file /var/log/es-containers.log.pos
       time_format %Y-%m-%dT%H:%M:%S.%NZ
-      tag kubernetes.*
+      tag raw.kubernetes.*
-      format json
       read_from_head true
+      <parse>
+        @type multi_format
+        <pattern>
+          format json
+          time_key time
+          time_format %Y-%m-%dT%H:%M:%S.%NZ
+        </pattern>
+        <pattern>
+          format /^(?<time>.+) (?<stream>stdout|stderr) [^ ]* (?<log>.*)$/
+          time_format %Y-%m-%dT%H:%M:%S.%N%:z
+        </pattern>
+      </parse>
     </source>
+
+    # Detect exceptions in the log output and forward them as one log entry.
+    <match raw.kubernetes.**>
+      @id raw.kubernetes
+      @type detect_exceptions
+      remove_tag_prefix raw
+      message log
+      stream stream
+      multiline_flush_interval 5
+      max_bytes 500000
+      max_lines 1000
+    </match>
+
+  system.input.conf: |-
     # Example:
     # 2015-12-21 23:17:22,066 [salt.state       ][INFO    ] Completed state [net.ipv4.ip_forward] at time 23:17:22.066081
     <source>
-      type tail
+      @id minion
+      @type tail
       format /^(?<time>[^ ]* [^ ,]*)[^\[]*\[[^\]]*\]\[(?<severity>[^ \]]*) *\] (?<message>.*)$/
       time_format %Y-%m-%d %H:%M:%S
       path /var/log/salt/minion
-      pos_file /var/log/es-salt.pos
+      pos_file /var/log/salt.pos
       tag salt
     </source>
+
     # Example:
     # Dec 21 23:17:22 gke-foo-1-1-4b5cbd14-node-4eoj startupscript: Finished running startup script /var/run/google.startup.script
     <source>
-      type tail
+      @id startupscript.log
+      @type tail
       format syslog
       path /var/log/startupscript.log
       pos_file /var/log/es-startupscript.log.pos
       tag startupscript
     </source>
+
     # Examples:
     # time="2016-02-04T06:51:03.053580605Z" level=info msg="GET /containers/json"
     # time="2016-02-04T07:53:57.505612354Z" level=error msg="HTTP Error" err="No such image: -f" statusCode=404
+    # TODO(random-liu): Remove this after cri container runtime rolls out.
     <source>
-      type tail
+      @id docker.log
+      @type tail
       format /^time="(?<time>[^)]*)" level=(?<severity>[^ ]*) msg="(?<message>[^"]*)"( err="(?<error>[^"]*)")?( statusCode=($<status_code>\d+))?/
       path /var/log/docker.log
       pos_file /var/log/es-docker.log.pos
       tag docker
     </source>
+
     # Example:
     # 2016/02/04 06:52:38 filePurge: successfully removed file /var/etcd/data/member/wal/00000000000006d0-00000000010a23d1.wal
     <source>
-      type tail
+      @id etcd.log
+      @type tail
       # Not parsing this, because it doesn't have anything particularly useful to
       # parse out of it (like severities).
       format none
@@ -163,13 +195,16 @@ data:
       pos_file /var/log/es-etcd.log.pos
       tag etcd
     </source>
+
     # Multi-line parsing is required for all the kube logs because very large log
     # statements, such as those that include entire object bodies, get split into
     # multiple lines by glog.
+
     # Example:
     # I0204 07:32:30.020537    3368 server.go:1048] POST /stats/container/: (13.972191ms) 200 [[Go-http-client/1.1] 10.244.1.3:40537]
     <source>
-      type tail
+      @id kubelet.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -179,10 +214,12 @@ data:
       pos_file /var/log/es-kubelet.log.pos
       tag kubelet
     </source>
+
     # Example:
     # I1118 21:26:53.975789       6 proxier.go:1096] Port "nodePort for kube-system/default-http-backend:http" (:31429/tcp) was open before and is still needed
     <source>
-      type tail
+      @id kube-proxy.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -192,10 +229,12 @@ data:
       pos_file /var/log/es-kube-proxy.log.pos
       tag kube-proxy
     </source>
+
     # Example:
     # I0204 07:00:19.604280       5 handlers.go:131] GET /api/v1/nodes: (1.624207ms) 200 [[kube-controller-manager/v1.1.3 (linux/amd64) kubernetes/6a81b50] 127.0.0.1:38266]
     <source>
-      type tail
+      @id kube-apiserver.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -205,10 +244,12 @@ data:
       pos_file /var/log/es-kube-apiserver.log.pos
       tag kube-apiserver
     </source>
+
     # Example:
     # I0204 06:55:31.872680       5 servicecontroller.go:277] LB already exists and doesn't need update for service kube-system/kube-ui
     <source>
-      type tail
+      @id kube-controller-manager.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -218,10 +259,12 @@ data:
       pos_file /var/log/es-kube-controller-manager.log.pos
       tag kube-controller-manager
     </source>
+
     # Example:
     # W0204 06:49:18.239674       7 reflector.go:245] pkg/scheduler/factory/factory.go:193: watch of *api.Service ended with: 401: The event in requested index is outdated and cleared (the requested history has been cleared [2578313/2577886]) [2579312]
     <source>
-      type tail
+      @id kube-scheduler.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -231,10 +274,12 @@ data:
       pos_file /var/log/es-kube-scheduler.log.pos
       tag kube-scheduler
     </source>
+
     # Example:
     # I1104 10:36:20.242766       5 rescheduler.go:73] Running Rescheduler
     <source>
-      type tail
+      @id rescheduler.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -244,10 +289,12 @@ data:
       pos_file /var/log/es-rescheduler.log.pos
       tag rescheduler
     </source>
+
     # Example:
     # I0603 15:31:05.793605       6 cluster_manager.go:230] Reading config from path /etc/gce.conf
     <source>
-      type tail
+      @id glbc.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -257,10 +304,12 @@ data:
       pos_file /var/log/es-glbc.log.pos
       tag glbc
     </source>
+
     # Example:
     # I0603 15:31:05.793605       6 cluster_manager.go:230] Reading config from path /etc/gce.conf
     <source>
-      type tail
+      @id cluster-autoscaler.log
+      @type tail
       format multiline
       multiline_flush_interval 5s
       format_firstline /^\w\d{4}/
@@ -270,59 +319,123 @@ data:
       pos_file /var/log/es-cluster-autoscaler.log.pos
       tag cluster-autoscaler
     </source>
+
+    # Logs from systemd-journal for interesting services.
+    # TODO(random-liu): Remove this after cri container runtime rolls out.
+    <source>
+      @id journald-docker
+      @type systemd
+      filters [{ "_SYSTEMD_UNIT": "docker.service" }]
+      <storage>
+        @type local
+        persistent true
+      </storage>
+      read_from_head true
+      tag docker
+    </source>
+
+    <source>
+      @id journald-container-runtime
+      @type systemd
+      filters [{ "_SYSTEMD_UNIT": "{{ container_runtime }}.service" }]
+      <storage>
+        @type local
+        persistent true
+      </storage>
+      read_from_head true
+      tag container-runtime
+    </source>
+
+    <source>
+      @id journald-kubelet
+      @type systemd
+      filters [{ "_SYSTEMD_UNIT": "kubelet.service" }]
+      <storage>
+        @type local
+        persistent true
+      </storage>
+      read_from_head true
+      tag kubelet
+    </source>
+
+    <source>
+      @id journald-node-problem-detector
+      @type systemd
+      filters [{ "_SYSTEMD_UNIT": "node-problem-detector.service" }]
+      <storage>
+        @type local
+        persistent true
+      </storage>
+      read_from_head true
+      tag node-problem-detector
+    </source>
+
+  forward.input.conf: |-
+    # Takes the messages sent over TCP
+    <source>
+      @type forward
+    </source>
+
+  monitoring.conf: |-
+    # Prometheus Exporter Plugin
+    # input plugin that exports metrics
+    <source>
+      @type prometheus
+    </source>
+
+    <source>
+      @type monitor_agent
+    </source>
+
+    # input plugin that collects metrics from MonitorAgent
+    <source>
+      @type prometheus_monitor
+      <labels>
+        host ${hostname}
+      </labels>
+    </source>
+
+    # input plugin that collects metrics for output plugin
+    <source>
+      @type prometheus_output_monitor
+      <labels>
+        host ${hostname}
+      </labels>
+    </source>
+
+    # input plugin that collects metrics for in_tail plugin
+    <source>
+      @type prometheus_tail_monitor
+      <labels>
+        host ${hostname}
+      </labels>
+    </source>
+
+  output.conf: |-
+    # Enriches records with Kubernetes metadata
     <filter kubernetes.**>
-      type kubernetes_metadata
+      @type kubernetes_metadata
     </filter>
-    ## Prometheus Exporter Plugin
+
-    ## input plugin that exports metrics
-    #<source>
-    #  type prometheus
-    #</source>
-    #<source>
-    #  type monitor_agent
-    #</source>
-    #<source>
-    #  type forward
-    #</source>
-    ## input plugin that collects metrics from MonitorAgent
-    #<source>
-    #  @type prometheus_monitor
-    #  <labels>
-    #    host ${hostname}
-    #  </labels>
-    #</source>
-    ## input plugin that collects metrics for output plugin
-    #<source>
-    #  @type prometheus_output_monitor
-    #  <labels>
-    #    host ${hostname}
-    #  </labels>
-    #</source>
-    ## input plugin that collects metrics for in_tail plugin
-    #<source>
-    #  @type prometheus_tail_monitor
-    #  <labels>
-    #    host ${hostname}
-    #  </labels>
-    #</source>
     <match **>
-       type elasticsearch
+      @id elasticsearch
-       user "#{ENV['FLUENT_ELASTICSEARCH_USER']}"
+      @type elasticsearch
-       password "#{ENV['FLUENT_ELASTICSEARCH_PASSWORD']}"
+      @log_level info
-       log_level info
+      include_tag_key true
-       include_tag_key true
+      host elasticsearch-logging
-       host elasticsearch-logging
+      port 9200
-       port 9200
+      logstash_format true
-       logstash_format true
+      <buffer>
-       # Set the chunk limit the same as for fluentd-gcp.
+        @type file
-       buffer_chunk_limit 2M
+        path /var/log/fluentd-buffers/kubernetes.system.buffer
-       # Cap buffer memory usage to 2MiB/chunk * 32 chunks = 64 MiB
+        flush_mode interval
-       buffer_queue_limit 32
+        retry_type exponential_backoff
-       flush_interval 5s
+        flush_thread_count 2
-       # Never wait longer than 5 minutes between retries.
+        flush_interval 5s
-       max_retry_wait 30
+        retry_forever
-       # Disable the limit on the number of retries (retry forever).
+        retry_max_interval 30
-       disable_retry_limit
+        chunk_limit_size 2M
-       # Use multiple threads for processing.
+        queue_limit_length 8
-       num_threads 8
+        overflow_action block
+      </buffer>
     </match>

roles/kubernetes-apps/efk/fluentd/templates/fluentd-ds.yml.j2

@@ -1,21 +1,22 @@
 ---
-# https://raw.githubusercontent.com/kubernetes/kubernetes/v1.5.2/cluster/addons/fluentd-elasticsearch/es-controller.yaml
+# https://raw.githubusercontent.com/kubernetes/kubernetes/release-1.10/cluster/addons/fluentd-elasticsearch/fluentd-es-ds.yaml
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: DaemonSet
 metadata:
-  name: "fluentd-es-v{{ fluentd_version }}"
+  name: "fluentd-es-{{ fluentd_version }}"
   namespace: "kube-system"
   labels:
     k8s-app: fluentd-es
     kubernetes.io/cluster-service: "true"
-    version: "v{{ fluentd_version }}"
+    version: "{{ fluentd_version }}"
+    addonmanager.kubernetes.io/mode: Reconcile
 spec:
   template:
     metadata:
       labels:
         k8s-app: fluentd-es
         kubernetes.io/cluster-service: "true"
-        version: "v{{ fluentd_version }}"
+        version: "{{ fluentd_version }}"
     spec:
       tolerations:
         - effect: NoSchedule
@@ -23,10 +24,9 @@ spec:
       containers:
       - name: fluentd-es
         image: "{{ fluentd_image_repo }}:{{ fluentd_image_tag }}"
-        command:
+        env:
-          - '/bin/sh'
+        - name: FLUENTD_ARGS
-          - '-c'
+          value: "--no-supervisor -q"
-          - '/usr/sbin/td-agent -c {{ fluentd_config_dir }}/{{ fluentd_config_file}} 2>&1 >> /var/log/fluentd.log'
         resources:
           limits:
 {% if fluentd_cpu_limit is defined and fluentd_cpu_limit != "0m" %}
@@ -42,8 +42,10 @@ spec:
         - name: dockercontainers
           mountPath: "{{ docker_daemon_graph }}/containers"
           readOnly: true
-        - name: config
+        - name: config-volume
           mountPath: "{{ fluentd_config_dir }}"
+      nodeSelector:
+        beta.kubernetes.io/fluentd-ds-ready: "true"
       terminationGracePeriodSeconds: 30
       volumes:
       - name: varlog
@@ -52,7 +54,7 @@ spec:
       - name: dockercontainers
         hostPath:
           path: {{ docker_daemon_graph }}/containers
-      - name: config
+      - name: config-volume
         configMap: 
           name: fluentd-config
 {% if rbac_enabled %}