内容简介：Kubernetes 上部署 efk 日志收集系统环境版本：OS：CentOS 7.4(1804)
Kubernetes 上部署 efk 日志收集系统
环境版本：
OS：CentOS 7.4(1804)
Kubernetes：1.11.3
Elasticsearch：5.4.0
Fuentd-elasticsearch：2.0.2
Kibana：6.4.0
本地镜像仓库：192.168.22.8
NFS-Server：192.168.22.8
部署顺序：
Kibana -> NFS动态存储 -> Elasticsearch -> Fuentd-es ->设置节点label
Kibana初始化要10-15分钟，时间较长，所以先部署
开始部署：
一、部署Kibana
1、使用Deployment方式部署kibana
[root@server efk]# cat kibana-deployment.yaml
apiVersion: apps/v1beta2
kind: Deployment
metadata:
name: kibana-logging
namespace: kube-system
labels:
k8s-app: kibana-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
replicas: 1
selector:
matchLabels:
k8s-app: kibana-logging
template:
metadata:
labels:
k8s-app: kibana-logging
spec:
containers:
- name: kibana-logging
image: 192.168.22.8/kibana:6.4.0 ##此处192.168.22.8改为你自己的仓库，或阿里仓库，删除ip就是走默认配置下载
resources:
# need more cpu upon initialization, therefore burstable class
limits:
cpu: 1000m
requests:
cpu: 100m
env:
- name: ELASTICSEARCH_URL
value: http://elasticsearch-logging:9200
- name: SERVER_BASEPATH
#value: /api/v1/proxy/namespaces/kube-system/services/kibana-logging
value: /api/v1/namespaces/kube-system/services/kibana-logging/proxy
- name: XPACK_MONITORING_ENABLED
value: "false"
- name: XPACK_SECURITY_ENABLED
value: "false"
ports:
- containerPort: 5601
name: ui
protocol: TCP
[root@server efk]# kubectl create -f kibana-deployment.yaml ##部署kibana
查看是否部署成功
[root@server efk]# kubectl get pod -n kube-system |grep kibana kibana-logging-69c8b74dc7-m7n84 1/1 Running 0 21m
如果部署失败，则使用以下命令查看错误信息
# kubectl describe pod -n kube-system kibana-logging-69c8b74dc7-m7n84 ##注意最后那一段为kibana的pod，要写你自己的 # kubectl logs -n kube-system kibana-logging-69c8b74dc7-m7n84
2、部署kibana的service
[root@server efk]# cat kibana-service.yaml
apiVersion: v1
kind: Service
metadata:
name: kibana-logging
namespace: kube-system
labels:
k8s-app: kibana-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "Kibana"
spec:
ports:
- port: 5601
protocol: TCP
targetPort: ui
selector:
k8s-app: kibana-logging
查看是否部署成功
[root@server efk]# kubectl get service -n kube-system |grep "kibana" kibana-logging ClusterIP 10.68.251.197 <none> 5601/TCP 26m
二、部署NFS动态存储provisioner
1、在192.168.22.8上安装NFS-Server
[root@harbor ~]# yum -y install nfs-server
配置nfs
[root@harbor ~]# cat /etc/exports /share *(rw,sync,insecure,no_subtree_check,no_root_squash) [root@harbor ~]# mkdir /share
启动NFS-Server
[root@harbor ~]# systemctl restart nfs-server
查看是否共享成功
[root@harbor ~]# showmount -e 192.168.22.8 Export list for 192.168.22.8: /share *
--------OK nfs-server配置成功
2、在Kubernetes使用nfs部署动态pv provisioner
[root@server efk]# cat nfs-provisioner.yaml
apiVersion: v1
kind: Service
metadata:
name: kibana-logging
namespace: kube-system
labels:
k8s-app: kibana-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "Kibana"
spec:
ports:
- port: 5601
protocol: TCP
targetPort: ui
selector:
k8s-app: kibana-logging
[root@server efk]#
[root@server efk]#
[root@server efk]# cat nfs-provisioner-01.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: nfs-client-provisioner
namespace: kube-system
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: nfs-client-provisioner-runner
rules:
- apiGroups: [""]
resources: ["persistentvolumes"]
verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs: ["get", "list", "watch", "update"]
- apiGroups: ["storage.k8s.io"]
resources: ["storageclasses"]
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["events"]
verbs: ["list", "watch", "create", "update", "patch"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: run-nfs-client-provisioner
subjects:
- kind: ServiceAccount
name: nfs-client-provisioner
namespace: kube-system
roleRef:
kind: ClusterRole
name: nfs-client-provisioner-runner
apiGroup: rbac.authorization.k8s.io
---
kind: Deployment
apiVersion: apps/v1beta1
metadata:
name: nfs-provisioner-01
namespace: kube-system
spec:
replicas: 1
strategy:
type: Recreate
selector:
matchLabels:
app: nfs-provisioner-01
template:
metadata:
labels:
app: nfs-provisioner-01
spec:
serviceAccountName: nfs-client-provisioner
containers:
- name: nfs-client-provisioner
#image: quay.io/external_storage/nfs-client-provisioner:latest
image: jmgao1983/nfs-client-provisioner:latest
imagePullPolicy: IfNotPresent
volumeMounts:
- name: nfs-client-root
mountPath: /persistentvolumes
env:
- name: PROVISIONER_NAME
# 此处供应者名字供storageclass调用
value: nfs-provisioner-01
- name: NFS_SERVER
value: 192.168.22.8
- name: NFS_PATH
value: /share
volumes:
- name: nfs-client-root
nfs:
server: 192.168.22.8
path: /share
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: nfs-dynamic-class
provisioner: nfs-provisioner-01
创建pv
[root@server efk]# kubectl create -f ./nfs-provisioner.yaml
查看是否创建成功
[root@server efk]# kubectl get pod -n kube-system |grep "nfs" nfs-provisioner-01-65d4f6df88-qq6k9 1/1 Running 0 37m
三、部署Elasticsearch
因为search是有数据的所以要按有状态的服务来部署，这里使用上一步仓库的动态存储pv来存储数据
[root@server efk]# cat es-statefulset.yaml
# RBAC authn and authz
apiVersion: v1
kind: ServiceAccount
metadata:
name: elasticsearch-logging
namespace: kube-system
labels:
k8s-app: elasticsearch-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: elasticsearch-logging
labels:
k8s-app: elasticsearch-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
rules:
- apiGroups:
- ""
resources:
- "services"
- "namespaces"
- "endpoints"
verbs:
- "get"
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: kube-system
name: elasticsearch-logging
labels:
k8s-app: elasticsearch-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
subjects:
- kind: ServiceAccount
name: elasticsearch-logging
namespace: kube-system
apiGroup: ""
roleRef:
kind: ClusterRole
name: elasticsearch-logging
apiGroup: ""
---
# Elasticsearch deployment itself
apiVersion: apps/v1beta2
kind: StatefulSet
metadata:
name: elasticsearch-logging
namespace: kube-system
labels:
k8s-app: elasticsearch-logging
version: v6.4.0
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
serviceName: elasticsearch-logging
replicas: 2
selector:
matchLabels:
k8s-app: elasticsearch-logging
version: v6.4.0
template:
metadata:
labels:
k8s-app: elasticsearch-logging
version: v6.4.0
kubernetes.io/cluster-service: "true"
spec:
serviceAccountName: elasticsearch-logging
containers:
#- image: gcr.io/google-containers/elasticsearch:v5.6.4
#- image: mirrorgooglecontainers/elasticsearch:v5.6.4
- image: 192.168.22.8/efk/elasticsearch:6.4.0
name: elasticsearch-logging
resources:
# need more cpu upon initialization, therefore burstable class
limits:
cpu: 1000m
requests:
cpu: 100m
ports:
- containerPort: 9200
name: db
protocol: TCP
- containerPort: 9300
name: transport
protocol: TCP
volumeMounts:
- name: elasticsearch-logging
mountPath: /data
env:
- name: "NAMESPACE"
valueFrom:
fieldRef:
fieldPath: metadata.namespace
# Elasticsearch requires vm.max_map_count to be at least 262144.
# If your OS already sets up this number to a higher value, feel free
# to remove this init container.
initContainers:
- image: alpine:3.6
command: ["/sbin/sysctl", "-w", "vm.max_map_count=262144"]
name: elasticsearch-logging-init
securityContext:
privileged: true
volumeClaimTemplates:
- metadata:
name: elasticsearch-logging
spec:
accessModes: [ "ReadWriteMany" ]
storageClassName: "nfs-dynamic-class"
resources:
requests:
storage: 5Gi
创建elasticsearch应用pod
[root@server efk]# kubectl create -f es-statefulset.yaml
查看是否创建成功
[root@server efk]# kubectl get pod -n kube-system |grep elasticsearch elasticsearch-logging-0 1/1 Running 0 40m elasticsearch-logging-1 1/1 Running 0 40m
创建service
[root@server efk]# cat es-service.yaml
apiVersion: v1
kind: Service
metadata:
name: elasticsearch-logging
namespace: kube-system
labels:
k8s-app: elasticsearch-logging
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "Elasticsearch"
spec:
ports:
- port: 9200
protocol: TCP
targetPort: db
# clusterIP: None
selector:
k8s-app: elasticsearch-logging
[root@server efk]# kubectl create -f es-service.yaml
查看是否创建成功
[root@server efk]# kubectl get service -n kube-system |grep elasticsearch elasticsearch-logging ClusterIP 10.68.150.151 <none> 9200/TCP 41m
三、部署fluentd-es
fluentd 采集规则文件
[root@server efk]# cat fluentd-es-configmap.yaml
kind: ConfigMap
apiVersion: v1
data:
containers.input.conf: |-
<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.*
read_from_head true
format 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>
</source>
system.input.conf: |-
<source>
type tail
format /^(?<time>[^ ]* [^ ,]*)[^\[]*\[[^\]]*\]\[(?<severity>[^ \]]*) *\] (?<message>.*)$/
time_format %Y-%m-%d %H:%M:%S
path /var/log/salt/minion
pos_file /var/log/es-salt.pos
tag salt
</source>
# Example:
# Dec 21 23:17:22 gke-foo-1-1-4b5cbd14-node-4eoj startupscript: Finished running startup script /var/run/google.startup.script
<source>
type tail
format syslog
path /var/log/startupscript.log
pos_file /var/log/es-startupscript.log.pos
tag startupscript
</source>
<source>
type tail
format /^time="(?<time>[^)]*)" level=(?<severity>[^ ]*) msg="(?<message>[^"]*)"( err="(?<error>[^"]*)")?( statusCode=($<status_code>\d+))?/
path /var/log/docker.log
pos_file /var/log/es-docker.log.pos
tag docker
</source>
<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>
<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>
# Logs from systemd-journal for interesting services.
<source>
type systemd
filters [{ "_SYSTEMD_UNIT": "docker.service" }]
pos_file /var/log/gcp-journald-docker.pos
read_from_head true
tag docker
</source>
<source>
type systemd
filters [{ "_SYSTEMD_UNIT": "kubelet.service" }]
pos_file /var/log/gcp-journald-kubelet.pos
read_from_head true
tag kubelet
</source>
<source>
type systemd
filters [{ "_SYSTEMD_UNIT": "node-problem-detector.service" }]
pos_file /var/log/gcp-journald-node-problem-detector.pos
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: |-
<filter kubernetes.**>
type kubernetes_metadata
</filter>
<match **>
type elasticsearch
log_level info
include_tag_key true
host elasticsearch-logging
port 9200
logstash_format true
buffer_chunk_limit 2M
buffer_queue_limit 8
flush_interval 5s
max_retry_wait 30
disable_retry_limit
num_threads 2
</match>
metadata:
name: fluentd-es-config-v0.1.1
namespace: kube-system
labels:
addonmanager.kubernetes.io/mode: Reconcile
fluentd-es.yaml
[root@server efk]# cat fluentd-es-ds.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: fluentd-es
namespace: kube-system
labels:
k8s-app: fluentd-es
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: fluentd-es
labels:
k8s-app: fluentd-es
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
rules:
- apiGroups:
- ""
resources:
- "namespaces"
- "pods"
verbs:
- "get"
- "watch"
- "list"
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: fluentd-es
labels:
k8s-app: fluentd-es
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
subjects:
- kind: ServiceAccount
name: fluentd-es
namespace: kube-system
apiGroup: ""
roleRef:
kind: ClusterRole
name: fluentd-es
apiGroup: ""
---
apiVersion: apps/v1beta2
kind: DaemonSet
metadata:
name: fluentd-es-v2.0.2
namespace: kube-system
labels:
k8s-app: fluentd-es
version: v2.0.2
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
selector:
matchLabels:
k8s-app: fluentd-es
version: v2.0.2
template:
metadata:
labels:
k8s-app: fluentd-es
kubernetes.io/cluster-service: "true"
version: v2.0.2
# This annotation ensures that fluentd does not get evicted if the node
# supports critical pod annotation based priority scheme.
# Note that this does not guarantee admission on the nodes (#40573).
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
serviceAccountName: fluentd-es
containers:
- name: fluentd-es
#image: gcr.io/google-containers/fluentd-elasticsearch:v2.0.2
#image: mirrorgooglecontainers/fluentd-elasticsearch:v2.0.2
image: 192.168.22.8/efk/fluentd-elasticsearch:v2.0.2
env:
- name: FLUENTD_ARGS
value: --no-supervisor -q
resources:
limits:
memory: 500Mi
requests:
cpu: 100m
memory: 200Mi
volumeMounts:
- name: varlog
mountPath: /var/log
- name: varlibdockercontainers
mountPath: /var/lib/docker/containers
readOnly: true
- name: libsystemddir
mountPath: /host/lib
readOnly: true
- name: config-volume
mountPath: /etc/fluent/config.d
nodeSelector:
beta.kubernetes.io/fluentd-ds-ready: "true"
terminationGracePeriodSeconds: 30
volumes:
- name: varlog
hostPath:
path: /var/log
- name: varlibdockercontainers
hostPath:
path: /var/lib/docker/containers
# It is needed to copy systemd library to decompress journals
- name: libsystemddir
hostPath:
path: /usr/lib64
- name: config-volume
configMap:
name: fluentd-es-config-v0.1.1
创建fluentd POD
[root@server efk]# kubectl create -f ./fluentd-es-configmap.yaml fluentd-es-ds.yaml
注意：Fluentd 是以 DaemonSet 形式运行且只会调度到有beta.kubernetes.io/fluentd-ds-ready=true标签的节点，所以对需要收集日志的节点逐个打上标签：
[root@server efk]# kubectl label nodes 192.168.22.12 beta.kubernetes.io/fluentd-ds-ready=true node "192.168.22.12" labeled
查看是否创建成功
[root@server efk]# kubectl get pod -n kube-system |grep fluentd fluentd-es-v2.0.2-9ttr5 1/1 Running 0 23h fluentd-es-v2.0.2-fsdwp 1/1 Running 0 23h fluentd-es-v2.0.2-k9ghs 1/1 Running 0 23h
四、访问 kibana
因kibana启动需要很长时间 ，必须要看到kibana的日志里显示 启动成功 ，方可访问
kubectl logs -n kube-system kibana-logging-69c8b74dc7-m7n84 -f
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大型网站系统与Java中间件开发实践
曾宪杰 / 电子工业出版社 / 2014-4-24 / 65.00
本书围绕大型网站和支撑大型网站架构的 Java 中间件的实践展开介绍。从分布式系统的知识切入，让读者对分布式系统有基本的了解；然后介绍大型网站随着数据量、访问量增长而发生的架构变迁；接着讲述构建 Java 中间件的相关知识；之后的几章都是根据笔者的经验来介绍支撑大型网站架构的 Java 中间件系统的设计和实践。希望读者通过本书可以了解大型网站架构变迁过程中的较为通用的问题和解法，并了解构建支撑大型......一起来看看 《大型网站系统与Java中间件开发实践》 这本书的介绍吧!
