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Merge pull request #1517 from seungkyua/apply_efk_rabc_and_fluentd_configmap

Browse source 
Apply RBAC to efk and create fluentd.conf
This commit is contained in:
Brad Beam 2017-08-11 13:33:35 -05:00 committed by GitHub
commit 08dd057864
9 changed files with 412 additions and 42 deletions
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39
roles/kubernetes-apps/efk/elasticsearch/tasks/main.yml
View file

@ -1,4 +1,22 @@
---
- name: "ElasticSearch | Write efk manifests (RBAC)"
template:
src: "{{ item }}"
dest: "{{ kube_config_dir }}/{{ item }}"
with_items:
- "efk-sa.yml"
- "efk-clusterrolebinding.yml"
run_once: true
when: rbac_enabled
- name: "ElasticSearch | Create Serviceaccount and Clusterrolebinding (RBAC)"
command: "kubectl apply -f {{ kube_config_dir }}/{{ item }} -n {{ system_namespace }}"
with_items:
- "efk-sa.yml"
- "efk-clusterrolebinding.yml"
run_once: true
when: rbac_enabled
- name: "ElasticSearch | Write ES deployment"
template:
src: elasticsearch-deployment.yml.j2
@ -6,15 +24,9 @@
register: es_deployment_manifest
- name: "ElasticSearch | Create ES deployment"
kube:
filename: "{{kube_config_dir}}/elasticsearch-deployment.yaml"
kubectl: "{{bin_dir}}/kubectl"
name: "elasticsearch-logging-v1"
namespace: "{{system_namespace}}"
resource: "rc"
state: "{{ item | ternary('latest','present') }}"
with_items: "{{ es_deployment_manifest.changed }}"
command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-deployment.yaml -n {{ system_namespace }}"
run_once: true
when: es_deployment_manifest.changed
- name: "ElasticSearch | Write ES service "
template:
@ -23,12 +35,7 @@
register: es_service_manifest
- name: "ElasticSearch | Create ES service"
kube:
filename: "{{kube_config_dir}}/elasticsearch-service.yaml"
kubectl: "{{bin_dir}}/kubectl"
name: "elasticsearch-logging"
namespace: "{{system_namespace}}"
resource: "svc"
state: "{{ item | ternary('latest','present') }}"
with_items: "{{ es_service_manifest.changed }}"
command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-service.yaml -n {{ system_namespace }}"
run_once: true
when: es_service_manifest.changed

13
roles/kubernetes-apps/efk/elasticsearch/templates/efk-clusterrolebinding.yml Normal file
View file

@ -0,0 +1,13 @@
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: efk
namespace: {{ system_namespace }}
subjects:
- kind: ServiceAccount
name: efk
namespace: {{ system_namespace }}
roleRef:
kind: ClusterRole
name: cluster-admin
apiGroup: rbac.authorization.k8s.io

7
roles/kubernetes-apps/efk/elasticsearch/templates/efk-sa.yml Normal file
View file

@ -0,0 +1,7 @@
apiVersion: v1
kind: ServiceAccount
metadata:
name: efk
namespace: {{ system_namespace }}
labels:
kubernetes.io/cluster-service: "true"

13
roles/kubernetes-apps/efk/elasticsearch/templates/elasticsearch-deployment.yml.j2
View file

@ -1,7 +1,7 @@
---
# https://raw.githubusercontent.com/kubernetes/kubernetes/v1.5.2/cluster/addons/fluentd-elasticsearch/es-controller.yaml
apiVersion: v1
kind: ReplicationController
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: elasticsearch-logging-v1
namespace: "{{ system_namespace }}"
@ -12,8 +12,9 @@ metadata:
spec:
replicas: 2
selector:
k8s-app: elasticsearch-logging
version: "{{ elasticsearch_image_tag }}"
matchLabels:
k8s-app: elasticsearch-logging
version: "{{ elasticsearch_image_tag }}"
template:
metadata:
labels:
@ -49,3 +50,7 @@ spec:
volumes:
- name: es-persistent-storage
emptyDir: {}
{% if rbac_enabled %}
serviceAccountName: efk
{% endif %}

2
roles/kubernetes-apps/efk/fluentd/defaults/main.yml
View file

@ -3,3 +3,5 @@ fluentd_cpu_limit: 0m
fluentd_mem_limit: 200Mi
fluentd_cpu_requests: 100m
fluentd_mem_requests: 200Mi
fluentd_config_dir: /etc/kubernetes/fluentd
fluentd_config_file: fluentd.conf

33
roles/kubernetes-apps/efk/fluentd/tasks/main.yml
View file

@ -1,28 +1,23 @@
---
- name: "Fluentd | copy config file"
template:
src: fluentd-config.yml.j2
dest: "{{ kube_config_dir }}/fluentd-config.yaml"
register: fluentd_config
- name: "Fluentd | create configMap"
command: "{{bin_dir}}/kubectl apply -f {{ kube_config_dir }}/fluentd-config.yaml"
run_once: true
when: fluentd_config.changed
- name: "Fluentd | Write fluentd daemonset"
template:
src: fluentd-ds.yml.j2
dest: "{{ kube_config_dir }}/fluentd-ds.yaml"
register: fluentd_ds_manifest
#FIXME: remove if kubernetes/features#124 is implemented
- name: "Fluentd | Purge old fluentd daemonset"
kube:
filename: "{{kube_config_dir}}/fluentd-ds.yaml"
kubectl: "{{bin_dir}}/kubectl"
name: "fluentd-es-v{{ fluentd_version }}"
namespace: "{{system_namespace}}"
resource: "ds"
state: absent
when: inventory_hostname == groups['kube-master'][0] and fluentd_ds_manifest.changed
- name: "Fluentd | Create fluentd daemonset"
kube:
filename: "{{kube_config_dir}}/fluentd-ds.yaml"
kubectl: "{{bin_dir}}/kubectl"
name: "fluentd-es-v{{ fluentd_version }}"
namespace: "{{system_namespace}}"
resource: "ds"
state: "{{ item | ternary('latest','present') }}"
with_items: "{{ fluentd_ds_manifest.changed }}"
command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/fluentd-ds.yaml -n {{ system_namespace }}"
run_once: true
when: fluentd_ds_manifest.changed

328
roles/kubernetes-apps/efk/fluentd/templates/fluentd-config.yml.j2 Normal file
View file

@ -0,0 +1,328 @@
apiVersion: v1
kind: ConfigMap
metadata:
name: fluentd-config
namespace: "{{ system_namespace }}"
data:
{{ fluentd_config_file }}: |
# 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
# to the docker logs for pods in the /var/log/containers directory on the host.
# If running this fluentd configuration in a Docker container, the /var/log
# directory should be mounted in the container.
#
# These logs are then submitted to Elasticsearch which assumes the
# installation of the fluent-plugin-elasticsearch & the
# fluent-plugin-kubernetes_metadata_filter plugins.
# 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
# =======
# A line in the Docker log file might look like this JSON:
#
# {"log":"2014/09/25 21:15:03 Got request with path wombat\n",
# "stream":"stderr",
# "time":"2014-09-25T21:15:03.499185026Z"}
#
# The time_format specification below makes sure we properly
# parse the time format produced by Docker. This will be
# submitted to Elasticsearch and should appear like:
# $ curl 'http://elasticsearch-logging:9200/_search?pretty'
# ...
# {
# "_index" : "logstash-2014.09.25",
# "_type" : "fluentd",
# "_id" : "VBrbor2QTuGpsQyTCdfzqA",
# "_score" : 1.0,
# "_source":{"log":"2014/09/25 22:45:50 Got request with path wombat\n",
# "stream":"stderr","tag":"docker.container.all",
# "@timestamp":"2014-09-25T22:45:50+00:00"}
# },
# ...
#
# The Kubernetes fluentd plugin is used to write the Kubernetes metadata to the log
# record & add labels to the log record if properly configured. This enables users
# to filter & search logs on any metadata.
# For example a Docker container's logs might be in the directory:
#
# /var/lib/docker/containers/997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b
#
# and in the file:
#
# 997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b-json.log
#
# where 997599971ee6... is the Docker ID of the running container.
# The Kubernetes kubelet makes a symbolic link to this file on the host machine
# in the /var/log/containers directory which includes the pod name and the Kubernetes
# container name:
#
# synthetic-logger-0.25lps-pod_default_synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
# ->
# /var/lib/docker/containers/997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b/997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b-json.log
#
# The /var/log directory on the host is mapped to the /var/log directory in the container
# running this instance of Fluentd and we end up collecting the file:
#
# /var/log/containers/synthetic-logger-0.25lps-pod_default_synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
#
# This results in the tag:
#
# var.log.containers.synthetic-logger-0.25lps-pod_default_synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
#
# The Kubernetes fluentd plugin is used to extract the namespace, pod name & container name
# which are added to the log message as a kubernetes field object & the Docker container ID
# is also added under the docker field object.
# The final tag is:
#
# kubernetes.var.log.containers.synthetic-logger-0.25lps-pod_default_synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
#
# And the final log record look like:
#
# {
# "log":"2014/09/25 21:15:03 Got request with path wombat\n",
# "stream":"stderr",
# "time":"2014-09-25T21:15:03.499185026Z",
# "kubernetes": {
# "namespace": "default",
# "pod_name": "synthetic-logger-0.25lps-pod",
# "container_name": "synth-lgr"
# },
# "docker": {
# "container_id": "997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b"
# }
# }
#
# 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
# 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"}
<source>
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.*
format json
read_from_head true
</source>
# 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
format /^(?<time>[^ ]* [^ ,]*)[^\[]*\[[^\]]*\]\[(?<severity>[^ \]]*) *\] (?<message>.*)$/
time_format %Y-%m-%d %H:%M:%S
path /var/log/salt/minion
pos_file /var/log/es-salt.pos
tag salt
</source>
# Example:
# Dec 21 23:17:22 gke-foo-1-1-4b5cbd14-node-4eoj startupscript: Finished running startup script /var/run/google.startup.script
<source>
type tail
format syslog
path /var/log/startupscript.log
pos_file /var/log/es-startupscript.log.pos
tag startupscript
</source>
# Examples:
# time="2016-02-04T06:51:03.053580605Z" level=info msg="GET /containers/json"
# time="2016-02-04T07:53:57.505612354Z" level=error msg="HTTP Error" err="No such image: -f" statusCode=404
<source>
type tail
format /^time="(?<time>[^)]*)" level=(?<severity>[^ ]*) msg="(?<message>[^"]*)"( err="(?<error>[^"]*)")?( statusCode=($<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
# Not parsing this, because it doesn't have anything particularly useful to
# parse out of it (like severities).
format none
path /var/log/etcd.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/kubelet.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/kube-proxy.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/kube-apiserver.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/kube-controller-manager.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/kube-scheduler.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/rescheduler.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/glbc.log
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
format multiline
multiline_flush_interval 5s
format_firstline /^\w\d{4}/
format1 /^(?<severity>\w)(?<time>\d{4} [^\s]*)\s+(?<pid>\d+)\s+(?<source>[^ \]]+)\] (?<message>.*)/
time_format %m%d %H:%M:%S.%N
path /var/log/cluster-autoscaler.log
pos_file /var/log/es-cluster-autoscaler.log.pos
tag cluster-autoscaler
</source>
<filter kubernetes.**>
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
user "#{ENV['FLUENT_ELASTICSEARCH_USER']}"
password "#{ENV['FLUENT_ELASTICSEARCH_PASSWORD']}"
log_level info
include_tag_key true
host elasticsearch-logging
port 9200
logstash_format true
# Set the chunk limit the same as for fluentd-gcp.
buffer_chunk_limit 2M
# Cap buffer memory usage to 2MiB/chunk * 32 chunks = 64 MiB
buffer_queue_limit 32
flush_interval 5s
# Never wait longer than 5 minutes between retries.
max_retry_wait 30
# Disable the limit on the number of retries (retry forever).
disable_retry_limit
# Use multiple threads for processing.
num_threads 8
</match>

11
roles/kubernetes-apps/efk/fluentd/templates/fluentd-ds.yml.j2
View file

@ -23,7 +23,7 @@ spec:
command:
- '/bin/sh'
- '-c'
- '/usr/sbin/td-agent 2>&1 >> /var/log/fluentd.log'
- '/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" %}
@ -39,6 +39,8 @@ spec:
- name: varlibdockercontainers
mountPath: /var/lib/docker/containers
readOnly: true
- name: config
mountPath: "{{ fluentd_config_dir }}"
terminationGracePeriodSeconds: 30
volumes:
- name: varlog
@ -47,3 +49,10 @@ spec:
- name: varlibdockercontainers
hostPath:
path: /var/lib/docker/containers
- name: config
configMap:
name: fluentd-config
{% if rbac_enabled %}
serviceAccountName: efk
{% endif %}

4
roles/kubernetes-apps/efk/kibana/templates/kibana-deployment.yml.j2
View file

@ -44,3 +44,7 @@ spec:
- containerPort: 5601
name: ui
protocol: TCP
{% if rbac_enabled %}
serviceAccountName: efk
{% endif %}