部署架构
- Filebeat、Kafka、Logstash、Elasticsearch、Kibana 全部部署在 K8S 中，实现采集容器日志
- Elasticsearch 主节点、数据节点、协调/客户端节点分开部署
- Elasticsearch 启用了 X-Pack 插件，实现账号和密码认证
部署过程
示例环境使用的是阿里云 Kubernetes 服务，如使用其他 K8S 环境会有些差异，可自行修改 yaml 文件相应的
storageClassName和Service type等
1. 创建单独的 namespace
# cat 00-ns.yaml
apiVersion: v1
kind: Namespace
metadata:
name: ns-elk
labels:
app: elasticsearch
# kubectl apply -f 00-ns.yaml
2. 生成开启 x-pack 时的 ssl 证书
// 参考：https://github.com/elastic/helm-charts/blob/master/elasticsearch/examples/security/Makefile#L24-L35
# docker run --name es-certutil -i -w /tmp docker.elastic.co/elasticsearch/elasticsearch:7.14.0 /bin/sh -c \
"elasticsearch-certutil ca --out /tmp/es-ca.p12 --pass '' && \
elasticsearch-certutil cert --name security-master --dns \
security-master --ca /tmp/es-ca.p12 --pass '' --ca-pass '' --out /tmp/elastic-certificates.p12"
# docker cp es-certutil:/tmp/elastic-certificates.p12 ./
// 生成 ssl 认证要使用的 secret elastic-certificates
# kubectl -n ns-elk create secret generic elastic-certificates --from-file=./elastic-certificates.p12
3. 部署 elasticsearch master 节点
# cat 01-es-master.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
namespace: ns-elk
name: elasticsearch-master
labels:
app: elasticsearch
role: master
spec:
serviceName: elasticsearch-master
replicas: 3
selector:
matchLabels:
app: elasticsearch
role: master
template:
metadata:
labels:
app: elasticsearch
role: master
spec:
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
resources:
requests:
memory: 2Gi
cpu: 1.0
limits:
memory: 4Gi
cpu: 2.0
command: ["bash", "-c", "ulimit -l unlimited && sysctl -w vm.max_map_count=262144 && chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data && exec su elasticsearch docker-entrypoint.sh"]
ports:
- containerPort: 9200
name: http
- containerPort: 9300
name: transport
env:
# 使用修改环境变量的方式修改 elasticsearch 配置
- name: discovery.seed_hosts
value: "elasticsearch-master.ns-elk.svc.cluster.local"
- name: cluster.initial_master_nodes
value: "elasticsearch-master-0,elasticsearch-master-1,elasticsearch-master-2"
- name: ES_JAVA_OPTS
value: -Xms2g -Xmx2g
- name: node.master
value: "true"
- name: node.ingest
value: "false"
- name: node.data
value: "false"
- name: cluster.name
value: "elasticsearch-cluster-v7"
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: xpack.security.enabled
value: "true"
- name: xpack.security.transport.ssl.enabled
value: "true"
- name: xpack.monitoring.collection.enabled
value: "true"
- name: xpack.security.transport.ssl.verification_mode
value: "certificate"
- name: xpack.security.transport.ssl.keystore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
- name: xpack.security.transport.ssl.truststore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
volumeMounts:
- mountPath: /usr/share/elasticsearch/data
name: pv-storage-elastic-master
- name: elastic-certificates
readOnly: true
mountPath: "/usr/share/elasticsearch/config/elastic-certificates.p12"
subPath: elastic-certificates.p12
- mountPath: /etc/localtime
name: localtime
# Gave permission to init container
securityContext:
privileged: true
volumes:
- name: elastic-certificates
secret:
secretName: elastic-certificates
- hostPath:
path: /etc/localtime
name: localtime
# Pull image from private repo
# imagePullSecrets:
# - name:
volumeClaimTemplates:
- metadata:
name: pv-storage-elastic-master
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "alicloud-disk-ssd"
resources:
requests:
storage: 20Gi
# kubectl -n ns-elk apply -f 01-es-master.yaml
4. 部署 elasticsearch data 节点
# cat 02-es-data.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
namespace: ns-elk
name: elasticsearch-data
labels:
app: elasticsearch
role: data
spec:
serviceName: elasticsearch-data
replicas: 3
selector:
matchLabels:
app: elasticsearch
role: data
template:
metadata:
labels:
app: elasticsearch
role: data
spec:
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
resources:
requests:
memory: 8Gi
cpu: 4.0
limits:
memory: 16Gi
cpu: 8.0
command: ["bash", "-c", "ulimit -l unlimited && sysctl -w vm.max_map_count=262144 && chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data && exec su elasticsearch docker-entrypoint.sh"]
ports:
- containerPort: 9200
name: http
- containerPort: 9300
name: transport
env:
- name: discovery.seed_hosts
value: "elasticsearch-master.ns-elk.svc.cluster.local"
- name: ES_JAVA_OPTS
value: -Xms8g -Xmx8g
- name: node.master
value: "false"
- name: node.ingest
value: "false"
- name: node.data
value: "true"
- name: cluster.name
value: "elasticsearch-cluster-v7"
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: xpack.security.enabled
value: "true"
- name: xpack.security.transport.ssl.enabled
value: "true"
- name: xpack.monitoring.collection.enabled
value: "true"
- name: xpack.security.transport.ssl.verification_mode
value: "certificate"
- name: xpack.security.transport.ssl.keystore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
- name: xpack.security.transport.ssl.truststore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
volumeMounts:
- mountPath: /usr/share/elasticsearch/data
name: pv-storage-elastic-data
- name: elastic-certificates
readOnly: true
mountPath: "/usr/share/elasticsearch/config/elastic-certificates.p12"
subPath: elastic-certificates.p12
- mountPath: /etc/localtime
name: localtime
# Gave permission to init container
securityContext:
privileged: true
volumes:
- name: elastic-certificates
secret:
secretName: elastic-certificates
- hostPath:
path: /etc/localtime
name: localtime
# Pull image from private repo
# imagePullSecrets:
# - name:
volumeClaimTemplates:
- metadata:
name: pv-storage-elastic-data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "alicloud-disk-ssd"
resources:
requests:
storage: 20Gi
# kubectl -n ns-elk apply -f 02-es-data.yaml
5. 部署 elasticsearch client/ingest 节点
# cat 03-es-client.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
namespace: ns-elk
name: elasticsearch-client
labels:
app: elasticsearch
role: client
spec:
serviceName: elasticsearch-client
replicas: 3
selector:
matchLabels:
app: elasticsearch
role: client
template:
metadata:
labels:
app: elasticsearch
role: client
spec:
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
resources:
requests:
memory: 4Gi
cpu: 2.0
limits:
memory: 8Gi
cpu: 4.0
command: ["bash", "-c", "ulimit -l unlimited && sysctl -w vm.max_map_count=262144 && chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data && exec su elasticsearch docker-entrypoint.sh"]
ports:
- containerPort: 9200
name: http
- containerPort: 9300
name: transport
env:
- name: discovery.seed_hosts
value: "elasticsearch-master.ns-elk.svc.cluster.local"
- name: ES_JAVA_OPTS
value: -Xms4g -Xmx4g
- name: node.master
value: "false"
- name: node.ingest
value: "true"
- name: node.data
value: "false"
- name: cluster.name
value: "elasticsearch-cluster-v7"
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
# 设置密码：kubectl -n ns-elk exec -it $(kubectl -n ns-elk get pods | grep elasticsearch-client | sed -n 1p | awk '{print $1}') -- bin/elasticsearch-setup-passwords auto -b
- name: xpack.security.enabled
value: "true"
- name: xpack.security.transport.ssl.enabled
value: "true"
- name: xpack.monitoring.collection.enabled
value: "true"
- name: xpack.security.transport.ssl.verification_mode
value: "certificate"
- name: xpack.security.transport.ssl.keystore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
- name: xpack.security.transport.ssl.truststore.path
value: "/usr/share/elasticsearch/config/elastic-certificates.p12"
volumeMounts:
- mountPath: /usr/share/elasticsearch/data
name: pv-storage-elastic-client
- name: elastic-certificates
readOnly: true
mountPath: "/usr/share/elasticsearch/config/elastic-certificates.p12"
subPath: elastic-certificates.p12
- mountPath: /etc/localtime
name: localtime
# Gave permission to init container
securityContext:
privileged: true
volumes:
- name: elastic-certificates
secret:
secretName: elastic-certificates
- hostPath:
path: /etc/localtime
name: localtime
# Pull image from private repo
# imagePullSecrets:
# - name:
volumeClaimTemplates:
- metadata:
name: pv-storage-elastic-client
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "alicloud-disk-ssd"
resources:
requests:
storage: 20Gi
# kubectl -n ns-elk apply -f 03-es-client.yaml
6. 暴露 elasticsearch service
# cat 04-es-service.yaml
apiVersion: v1
kind: Service
metadata:
namespace: ns-elk
name: elasticsearch-master
labels:
app: elasticsearch
role: master
spec:
clusterIP: None
selector:
app: elasticsearch
role: master
ports:
- port: 9200
name: http
- port: 9300
name: node-to-node
---
apiVersion: v1
kind: Service
metadata:
namespace: ns-elk
name: elasticsearch-data
labels:
app: elasticsearch
role: data
spec:
clusterIP: None
selector:
app: elasticsearch
role: data
ports:
- port: 9200
name: http
- port: 9300
name: node-to-node
---
apiVersion: v1
kind: Service
metadata:
annotations:
service.beta.kubernetes.io/alibaba-cloud-loadbalancer-address-type: "intranet"
# alicloud-loadbalancer-id 更改为对应阿里云 SLB ID
service.beta.kubernetes.io/alicloud-loadbalancer-id: "lb-wz96ujq51shspyxb5hpd7"
service.beta.kubernetes.io/alicloud-loadbalancer-force-override-listeners: "true"
namespace: ns-elk
name: elasticsearch-service
labels:
app: elasticsearch
role: client
spec:
externalTrafficPolicy: Local
sessionAffinity: None
type: LoadBalancer
ports:
- port: 9200
targetPort: 9200
selector:
app: elasticsearch
role: client
# kubectl -n ns-elk apply -f 04-es-service.yaml
7. 设置 elasticsearch 的密码
// 记得保存这些初始密码
# kubectl -n ns-elk exec -it $(kubectl -n ns-elk get pods | grep elasticsearch-client | sed -n 1p | awk '{print $1}') -- bin/elasticsearch-setup-passwords auto -b
Changed password for user apm_system
PASSWORD apm_system = MxlMXbMah7x54c4YQjPj
Changed password for user kibana_system
PASSWORD kibana_system = dgPCuR2ayG9FPCYLHlav
Changed password for user kibana
PASSWORD kibana = dgPCuR2ayG9FPCYLHlav
Changed password for user logstash_system
PASSWORD logstash_system = KgynQ5D3pD3OXDmV5IMA
Changed password for user beats_system
PASSWORD beats_system = ZMTRWXeVkEsrKU3BPl27
Changed password for user remote_monitoring_user
PASSWORD remote_monitoring_user = Vp5WI34HRO8XfRgAzBrC
Changed password for user elastic
PASSWORD elastic = 03sWFWzGOjNOCioqcbV3
这时就可以通过账号 elastic 和密码 03sWFWzGOjNOCioqcbV3登录 elasticsearch 了
8. 配置 kibana.yaml 连接 elasticsearch 的 secret
// 使用上面生成的用户 elastic 的密码 03sWFWzGOjNOCioqcbV3（登录 kibana 要用这个用户和密码）
# kubectl -n ns-elk create secret generic elasticsearch-password --from-literal password=03sWFWzGOjNOCioqcbV3
9. 部署 kibana
# cat 05-kibana.yaml
apiVersion: v1
kind: ConfigMap
metadata:
namespace: ns-elk
name: kibana-config
labels:
app: kibana
data:
kibana.yml: |-
server.host: 0.0.0.0
elasticsearch:
hosts: ${ELASTICSEARCH_HOSTS}
username: ${ELASTICSEARCH_USER}
password: ${ELASTICSEARCH_PASSWORD}
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
app: kibana
name: kibana
namespace: ns-elk
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
app: kibana
template:
metadata:
labels:
app: kibana
spec:
containers:
- name: kibana
image: docker.elastic.co/kibana/kibana:7.14.0
ports:
- containerPort: 5601
protocol: TCP
env:
# elasticsearch.hosts ???
- name: ELASTICSEARCH_HOSTS
value: "http://elasticsearch-service:9200"
- name: ELASTICSEARCH_USER
value: "elastic"
- name: ELASTICSEARCH_PASSWORD
valueFrom:
secretKeyRef:
name: elasticsearch-password
key: password
- name: xpack.encryptedSavedObjects.encryptionKey
value: "min-32-byte-long-strong-encryption-key"
volumeMounts:
- name: kibana-config
mountPath: /usr/share/kibana/config/kibana.yml
readOnly: true
subPath: kibana.yml
- mountPath: /etc/localtime
name: localtime
volumes:
- name: kibana-config
configMap:
name: kibana-config
- hostPath:
path: /etc/localtime
name: localtime
# imagePullSecrets:
# - name:
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
annotations:
service.beta.kubernetes.io/alibaba-cloud-loadbalancer-address-type: "intranet"
# alicloud-loadbalancer-id 更改为对应阿里云 SLB ID
service.beta.kubernetes.io/alicloud-loadbalancer-id: "lb-wz96ujq51shspyxb5hpd7"
service.beta.kubernetes.io/alicloud-loadbalancer-force-override-listeners: "true"
labels:
app: kibana
name: kibana-service
namespace: ns-elk
spec:
externalTrafficPolicy: Local
sessionAffinity: None
type: LoadBalancer
ports:
- port: 5601
targetPort: 5601
selector:
app: kibana
# kubectl -n ns-elk apply -f 05-kibana.yaml
这时就可以通过账号 elastic 和密码 03sWFWzGOjNOCioqcbV3 登录 kiban了
10. 部署 zookeeper
// 参考文档：https://github.com/bitnami/charts/tree/master/bitnami/zookeeper
# helm repo add bitnami https://charts.bitnami.com/bitnami
# helm search repo zookeeper -l
# helm pull bitnami/zookeeper --version 5.0.3
# tar xvf zookeeper-5.0.3.tgz
# cat 06-zk.yaml
## 根据需求修改副本数 replicaCount 的值，这里修改为 3
## 根据需求修改 storageClass 的值，这里使用阿里云的 alicloud-disk-ssd
## 根据需求修改 ssd 磁盘大小的 size （alicloud-disk-ssd 限制最小为 20Gi）
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry and imagePullSecrets
##
# global:
# imageRegistry: myRegistryName
# imagePullSecrets:
# - myRegistryKeySecretName
# storageClass: myStorageClass
## Bitnami Zookeeper image version
## ref: https://hub.docker.com/r/bitnami/zookeeper/tags/
##
image:
registry: docker.io
repository: bitnami/zookeeper
tag: 3.5.5-debian-9-r123
## Specify a imagePullPolicy
## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
##
pullPolicy: IfNotPresent
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
## Set to true if you would like to see extra information on logs
## It turns BASH and NAMI debugging in minideb
## ref: https://github.com/bitnami/minideb-extras/#turn-on-bash-debugging
##
debug: false
## String to partially override zookeeper.fullname template (will maintain the release name)
# nameOverride:
## String to fully override zookeeper.fullname template
# fullnameOverride:
## Init containers parameters:
## volumePermissions: Change the owner and group of the persistent volume mountpoint to runAsUser:fsGroup values from the securityContext section.
##
volumePermissions:
enabled: false
image:
registry: docker.io
repository: bitnami/minideb
tag: stretch
pullPolicy: Always
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
resources: {}
## StatefulSet controller supports automated updates. There are two valid update strategies: RollingUpdate and OnDelete
## ref: https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets
##
updateStrategy: RollingUpdate
## Limits the number of pods of the replicated application that are down simultaneously from voluntary disruptions
## The PDB will only be created if replicaCount is greater than 1
## ref: https://kubernetes.io/docs/concepts/workloads/pods/disruptions
##
podDisruptionBudget:
maxUnavailable: 1
## Partition update strategy
## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions
##
# rollingUpdatePartition:
# Cluster domain
clusterDomain: cluster.local
## StatefulSet controller supports relax its ordering guarantees while preserving its uniqueness and identity guarantees. There are two valid pod management policies: OrderedReady and Parallel
## ref: https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#pod-management-policy
##
podManagementPolicy: Parallel
## Number of ZooKeeper nodes
##
replicaCount: 3
## Basic time unit in milliseconds used by ZooKeeper for heartbeats
##
tickTime: 2000
## ZooKeeper uses to limit the length of time the ZooKeeper servers in quorum have to connect to a leader
##
initLimit: 10
## How far out of date a server can be from a leader
##
syncLimit: 5
## Limits the number of concurrent connections that a single client may make to a single member of the ZooKeeper ensemble
##
maxClientCnxns: 60
## A list of comma separated Four Letter Words commands to use
##
fourlwCommandsWhitelist: srvr, mntr
## Allow to accept connections from unauthenticated users
##
allowAnonymousLogin: true
auth:
## Use existing secret (ignores previous password)
##
# existingSecret:
## Enable Zookeeper auth. It uses SASL/Digest-MD5
##
enabled: false
## User that will use Zookeeper clients to auth
##
# clientUser:
## Password that will use Zookeeper clients to auth
##
# clientPassword:
## Comma, semicolon or whitespace separated list of user to be created. Specify them as a string, for example: "user1,user2,admin"
##
# serverUsers: ""
## Comma, semicolon or whitespace separated list of passwords to assign to users when created. Specify them as a string, for example: "pass4user1, pass4user2, pass4admin"
##
# serverPasswords: ""
## Size in MB for the Java Heap options (Xmx and XMs). This env var is ignored if Xmx an Xms are configured via JVMFLAGS
##
heapSize: 1024
## Log level for the Zookeeper server. ERROR by default. Have in mind if you set it to INFO or WARN the ReadinessProve will produce a lot of logs.
##
logLevel: ERROR
## Default JVMFLAGS for the ZooKeeper process
##
# jvmFlags:
## Configure ZooKeeper with a custom zoo.cfg file
##
# config:
## Kubernetes configuration
## For minikube, set this to NodePort, elsewhere use LoadBalancer
##
service:
type: ClusterIP
port: 2181
followerPort: 2888
electionPort: 3888
publishNotReadyAddresses: true
## Zookeeper Pod Security Context
securityContext:
enabled: true
fsGroup: 1001
runAsUser: 1001
## Zookeeper data Persistent Volume Storage Class
## If defined, storageClassName: <storageClass>
## If set to "-", storageClassName: "", which disables dynamic provisioning
## If undefined (the default) or set to null, no storageClassName spec is
## set, choosing the default provisioner. (gp2 on AWS, standard on
## GKE, AWS & OpenStack)
##
persistence:
enabled: true
storageClass: "alicloud-disk-ssd"
accessModes:
- ReadWriteOnce
size: 20Gi
annotations: {}
## Node labels for pod assignment
## Ref: https://kubernetes.io/docs/user-guide/node-selection/
##
nodeSelector: {}
## Tolerations for pod assignment
## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
##
tolerations: []
## Affinity for pod assignment
## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
##
affinity: {}
## Configure resource requests and limits
## ref: http://kubernetes.io/docs/user-guide/compute-resources/
##
resources:
requests:
memory: 256Mi
cpu: 250m
## Configure extra options for liveness and readiness probes
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)
##
livenessProbe:
enabled: true
initialDelaySeconds: 30
periodSeconds: 10
timeoutSeconds: 5
failureThreshold: 6
successThreshold: 1
readinessProbe:
enabled: true
initialDelaySeconds: 5
periodSeconds: 10
timeoutSeconds: 5
failureThreshold: 6
successThreshold: 1
## Prometheus Exporter / Metrics
##
metrics:
enabled: false
image:
registry: docker.io
repository: bitnami/zookeeper-exporter
tag: 0.1.1-debian-9-r58
pullPolicy: IfNotPresent
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
## Metrics exporter pod Annotation and Labels
podAnnotations:
prometheus.io/scrape: "true"
prometheus.io/port: "9141"
podLabels: {}
timeoutSeconds: 3
## Metrics exporter resource requests and limits
## ref: http://kubernetes.io/docs/user-guide/compute-resources/
##
resources: {}
## Metrics exporter labels and tolerations for pod assignment
# nodeSelector: {"beta.kubernetes.io/arch": "amd64"}
# tolerations: []
# helm -n ns-elk install zookeeper -f 06-zk.yaml ./zookeeper
11. 部署 kafka
// 参考文档：https://github.com/bitnami/charts/tree/master/bitnami/kafka
// filebeat 对 kafka 的版本有要求，参考：https://www.elastic.co/guide/en/beats/filebeat/current/kafka-output.html#kafka-compatibility
# helm search repo kafka -l
# helm pull bitnami/kafka --version 3.0.9
# tar xvf kafka-3.0.9.tgz
// !!! 把 statefulset api 版本为从 apiVersion: apps/v1beta2 修改为 apiVersion: apps/v1
# vim kafka/templates/statefulset.yaml
# vim kafka/charts/zookeeper/templates/statefulset.yaml
# cat 07-kafka.yaml
## 根据需求修改副本数 replicaCount 的值，这里修改为 3
## 根据需求修改 storageClass 的值，这里使用阿里云的 alicloud-disk-ssd
## 根据需求修改 size 的 ssd 磁盘大小（alicloud-disk-ssd 限制最小为 20Gi）
## 根据需求修改 externalZookeeper.servers 为 zookeeper 的地址
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry and imagePullSecrets
##
# global:
# imageRegistry: myRegistryName
# imagePullSecrets:
# - myRegistryKeySecretName
## Bitnami Kafka image version
## ref: https://hub.docker.com/r/bitnami/kafka/tags/
##
image:
registry: docker.io
repository: bitnami/kafka
tag: 2.2.1-debian-9-r12
## Specify a imagePullPolicy
## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
##
pullPolicy: IfNotPresent
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
## Set to true if you would like to see extra information on logs
## It turns BASH and NAMI debugging in minideb
## ref: https://github.com/bitnami/minideb-extras/#turn-on-bash-debugging
debug: false
## String to partially override kafka.fullname template (will maintain the release name)
# nameOverride:
## String to fully override kafka.fullname template
# fullnameOverride:
## StatefulSet controller supports automated updates. There are two valid update strategies: RollingUpdate and OnDelete
## ref: https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets
##
updateStrategy: RollingUpdate
## Partition update strategy
## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions
##
# rollingUpdatePartition:
## Limits the number of pods of the replicated application that are down simultaneously from voluntary disruptions
## The PDB will only be created if replicaCount is greater than 1
## ref: https://kubernetes.io/docs/concepts/workloads/pods/disruptions
##
podDisruptionBudget:
maxUnavailable: 1
replicaCount: 3
config: |-
# broker.id=-1
# listeners=PLAINTEXT://:9092
# advertised.listeners=PLAINTEXT://KAFKA_IP:9092
# num.network.threads=3
# num.io.threads=8
# socket.send.buffer.bytes=102400
# socket.receive.buffer.bytes=102400
# socket.request.max.bytes=104857600
# log.dirs=/opt/bitnami/kafka/data
# num.partitions=1
# num.recovery.threads.per.data.dir=1
# offsets.topic.replication.factor=1
# transaction.state.log.replication.factor=1
# transaction.state.log.min.isr=1
# log.flush.interval.messages=10000
# log.flush.interval.ms=1000
# log.retention.hours=168
# log.retention.bytes=1073741824
# log.segment.bytes=1073741824
# log.retention.check.interval.ms=300000
# zookeeper.connect=ZOOKEEPER_SERVICE_NAME
# zookeeper.connection.timeout.ms=6000
# group.initial.rebalance.delay.ms=0
## Kafka docker image available customizations
## https://github.com/bitnami/bitnami-docker-kafka#configuration
##
## Allow to use the PLAINTEXT listener.
allowPlaintextListener: true
## The address the socket server listens on.
# listeners:
## Hostname and port the broker will advertise to producers and consumers.
# advertisedListeners:
## The protocol->listener mapping
# listenerSecurityProtocolMap:
## The listener that the brokers should communicate on
# interBrokerListenerName:
## ID of the Kafka node.
brokerId: -1
## Switch to enable topic deletion or not.
deleteTopicEnable: false
## Kafka's Java Heap size.
heapOpts: -Xmx1024m -Xms1024m
## The number of messages to accept before forcing a flush of data to disk.
logFlushIntervalMessages: 10000
## The maximum amount of time a message can sit in a log before we force a flush.
logFlushIntervalMs: 1000
## A size-based retention policy for logs.
logRetentionBytes: _1073741824
## The interval at which log segments are checked to see if they can be deleted.
logRetentionCheckIntervalMs: 300000
## The minimum age of a log file to be eligible for deletion due to age.
logRetentionHours: 168
## The maximum size of a log segment file. When this size is reached a new log segment will be created.
logSegmentBytes: _1073741824
## Log message format version
logMessageFormatVersion: ""
## A comma separated list of directories under which to store log files.
logsDirs: /opt/bitnami/kafka/data
## The largest record batch size allowed by Kafka
maxMessageBytes: _1000012
## Default replication factors for automatically created topics
defaultReplicationFactor: 1
## The replication factor for the offsets topic
offsetsTopicReplicationFactor: 1
## The replication factor for the transaction topic
transactionStateLogReplicationFactor: 1
## Overridden min.insync.replicas config for the transaction topic
transactionStateLogMinIsr: 1
## The number of threads doing disk I/O.
numIoThreads: 8
## The number of threads handling network requests.
numNetworkThreads: 3
## The default number of log partitions per topic.
numPartitions: 1
## The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
numRecoveryThreadsPerDataDir: 1
## The receive buffer (SO_RCVBUF) used by the socket server.
socketReceiveBufferBytes: 102400
## The maximum size of a request that the socket server will accept (protection against OOM).
socketRequestMaxBytes: _104857600
## The send buffer (SO_SNDBUF) used by the socket server.
socketSendBufferBytes: 102400
## Timeout in ms for connecting to zookeeper.
zookeeperConnectionTimeoutMs: 6000
## The endpoint identification algorithm to validate server hostname using server certificate.
sslEndpointIdentificationAlgorithm: https
## All the parameters from the configuration file can be overwritten by using environment variables with this format: KAFKA_CFG_{KEY}
##
# extraEnvVars:
# - name: KAFKA_CFG_BACKGROUND_THREADS
# value: "10"
## Authentication parameteres
## https://github.com/bitnami/bitnami-docker-kafka#security
##
auth:
## Switch to enable the kafka authentication.
enabled: false
## Name of the existing secret containing credentials for brokerUser, interBrokerUser and zookeeperUser.
#existingSecret:
## Name of the existing secret containing the certificate files that will be used by Kafka.
#certificatesSecret:
## Password for the above certificates if they are password protected.
#certificatesPassword:
## Kafka client user.
brokerUser: user
## Kafka client password.
# brokerPassword:
## Kafka inter broker communication user.
interBrokerUser: admin
## Kafka inter broker communication password.
# interBrokerPassword:
## Kafka Zookeeper user.
#zookeeperUser:
## Kafka Zookeeper password.
#zookeeperPassword:
## Kubernetes Security Context
## https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
##
securityContext:
enabled: true
fsGroup: 1001
runAsUser: 1001
## Kubernetes configuration
## For minikube, set this to NodePort, elsewhere use LoadBalancer
##
service:
type: ClusterIP
port: 9092
## Specify the NodePort value for the LoadBalancer and NodePort service types.
## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
##
# nodePort:
## Use loadBalancerIP to request a specific static IP,
# loadBalancerIP:
## Service annotations done as key:value pairs
annotations:
## Kafka data Persistent Volume Storage Class
## If defined, storageClassName: <storageClass>
## If set to "-", storageClassName: "", which disables dynamic provisioning
## If undefined (the default) or set to null, no storageClassName spec is
## set, choosing the default provisioner. (gp2 on AWS, standard on
## GKE, AWS & OpenStack)
##
persistence:
enabled: true
## A manually managed Persistent Volume and Claim
## If defined, PVC must be created manually before volume will be bound
## The value is evaluated as a template, so, for example, the name can depend on .Release or .Chart
##
# existingClaim:
storageClass: "alicloud-disk-ssd"
accessModes:
- ReadWriteOnce
size: 20Gi
annotations: {}
## Node labels for pod assignment
## Ref: https://kubernetes.io/docs/user-guide/node-selection/
##
nodeSelector: {}
## Tolerations for pod assignment
## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
##
tolerations: []
## Affinity for pod assignment
## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
##
affinity: {}
## Configure resource requests and limits
## ref: http://kubernetes.io/docs/user-guide/compute-resources/
##
resources:
# limits:
# cpu: 200m
# memory: 1Gi
# requests:
# memory: 256Mi
# cpu: 250m
## Configure extra options for liveness and readiness probes
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes)
livenessProbe:
enabled: true
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 5
failureThreshold: 2
successThreshold: 1
readinessProbe:
enabled: true
initialDelaySeconds: 5
periodSeconds: 10
timeoutSeconds: 5
failureThreshold: 6
successThreshold: 1
## Prometheus Exporters / Metrics
##
metrics:
## Prometheus Kafka Exporter: exposes complimentary metrics to JMX Exporter
kafka:
enabled: false
image:
registry: docker.io
repository: danielqsj/kafka-exporter
tag: v1.0.1
pullPolicy: IfNotPresent
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
## Interval at which Prometheus scrapes metrics, note: only used by Prometheus Operator
interval: 10s
## Port kafka-exporter exposes for Prometheus to scrape metrics
port: 9308
## Resource limits
resources: {}
# limits:
# cpu: 200m
# memory: 1Gi
# requests:
# cpu: 100m
# memory: 100Mi
## Prometheus JMX Exporter: exposes the majority of Kafkas metrics
jmx:
enabled: false
image:
registry: docker.io
repository: solsson/kafka-prometheus-jmx-exporter@sha256
tag: a23062396cd5af1acdf76512632c20ea6be76885dfc20cd9ff40fb23846557e8
pullPolicy: IfNotPresent
## Optionally specify an array of imagePullSecrets.
## Secrets must be manually created in the namespace.
## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
##
# pullSecrets:
# - myRegistryKeySecretName
## Interval at which Prometheus scrapes metrics, note: only used by Prometheus Operator
interval: 10s
## Port jmx-exporter exposes Prometheus format metrics to scrape
exporterPort: 5556
resources: {}
# limits:
# cpu: 200m
# memory: 1Gi
# requests:
# cpu: 100m
# memory: 100Mi
## Credits to the incubator/kafka chart for the JMX configuration.
## https://github.com/helm/charts/tree/master/incubator/kafka
##
## Rules to apply to the Prometheus JMX Exporter. Note while lots of stats have been cleaned and exposed,
## there are still more stats to clean up and expose, others will never get exposed. They keep lots of duplicates
## that can be derived easily. The configMap in this chart cleans up the metrics it exposes to be in a Prometheus
## format, eg topic, broker are labels and not part of metric name. Improvements are gladly accepted and encouraged.
configMap:
## Allows disabling the default configmap, note a configMap is needed
enabled: true
## Allows setting values to generate confimap
## To allow all metrics through (warning its crazy excessive) comment out below `overrideConfig` and set
## `whitelistObjectNames: []`
overrideConfig: {}
# jmxUrl: service:jmx:rmi:///jndi/rmi://127.0.0.1:5555/jmxrmi
# lowercaseOutputName: true
# lowercaseOutputLabelNames: true
# ssl: false
# rules:
# - pattern: ".*"
## If you would like to supply your own ConfigMap for JMX metrics, supply the name of that
## ConfigMap as an `overrideName` here.
overrideName: ""
## Port the jmx metrics are exposed in native jmx format, not in Prometheus format
jmxPort: 5555
## JMX Whitelist Objects, can be set to control which JMX metrics are exposed. Only whitelisted
## values will be exposed via JMX Exporter. They must also be exposed via Rules. To expose all metrics
## (warning its crazy excessive and they aren't formatted in a prometheus style) (1) `whitelistObjectNames: []`
## (2) commented out above `overrideConfig`.
whitelistObjectNames: # []
- kafka.controller:*
- kafka.server:*
- java.lang:*
- kafka.network:*
- kafka.log:*
##
## Zookeeper chart configuration
##
## https://github.com/bitnami/charts/blob/master/bitnami/zookeeper/values.yaml
##
zookeeper:
enabled: false
externalZookeeper:
## This value is only used when zookeeper.enabled is set to false
## Server or list of external zookeeper servers to use.
servers: zookeeper.ns-elk.svc.cluster.local:2181
# helm -n ns-elk install kafka -f 07-kafka.yaml ./kafka
12. 部署 filebeat
# cat 08-filebeat.yaml
---
apiVersion: v1
kind: ConfigMap
metadata:
# 参考：https://www.elastic.co/guide/en/beats/filebeat/current/running-on-kubernetes.html
name: filebeat-config
namespace: ns-elk
labels:
k8s-app: filebeat
data:
filebeat.yml: |-
filebeat.inputs:
- type: container
paths:
- '/var/lib/docker/containers/*/*.log'
processors:
- add_kubernetes_metadata:
host: ${NODE_NAME}
matchers:
- logs_path:
logs_path: "/var/lib/docker/containers/"
# To enable hints based autodiscover, remove `filebeat.inputs` configuration and uncomment this:
#filebeat.autodiscover:
# providers:
# - type: kubernetes
# node: ${NODE_NAME}
# hints.enabled: true
# hints.default_config:
# type: container
# paths:
# - /var/log/containers/*${data.kubernetes.container.id}.log
processors:
- add_cloud_metadata:
- add_host_metadata:
# 参考：https://www.elastic.co/guide/en/beats/filebeat/current/kafka-output.html
output:
kafka:
enabled: true
hosts: ["kafka.ns-elk.svc.cluster.local:9092"]
topic: filebeat
max_message_bytes: 5242880
partition.round_robin:
reachable_only: true
keep-alive: 120
required_acks: 1
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: filebeat
namespace: ns-elk
labels:
k8s-app: filebeat
spec:
selector:
matchLabels:
k8s-app: filebeat
template:
metadata:
labels:
k8s-app: filebeat
spec:
serviceAccountName: filebeat
terminationGracePeriodSeconds: 30
hostNetwork: true
dnsPolicy: ClusterFirstWithHostNet
containers:
- name: filebeat
image: docker.elastic.co/beats/filebeat:7.14.0
args: [
"-c", "/etc/filebeat.yml",
"-e",
]
env:
- name: NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
securityContext:
runAsUser: 0
# If using Red Hat OpenShift uncomment this:
#privileged: true
resources:
limits:
memory: 200Mi
requests:
cpu: 100m
memory: 100Mi
volumeMounts:
- name: config
mountPath: /etc/filebeat.yml
readOnly: true
subPath: filebeat.yml
- name: data
mountPath: /usr/share/filebeat/data
- name: varlibdockercontainers
mountPath: /var/lib/docker/containers
readOnly: true
volumes:
- name: config
configMap:
defaultMode: 0640
name: filebeat-config
- name: varlibdockercontainers
hostPath:
path: /var/lib/docker/containers
# data folder stores a registry of read status for all files, so we don't send everything again on a Filebeat pod restart
- name: data
hostPath:
# When filebeat runs as non-root user, this directory needs to be writable by group (g+w).
path: /var/lib/filebeat-data
type: DirectoryOrCreate
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: filebeat
subjects:
- kind: ServiceAccount
name: filebeat
namespace: ns-elk
roleRef:
kind: ClusterRole
name: filebeat
apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: filebeat
namespace: ns-elk
subjects:
- kind: ServiceAccount
name: filebeat
namespace: ns-elk
roleRef:
kind: Role
name: filebeat
apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: filebeat-kubeadm-config
namespace: ns-elk
subjects:
- kind: ServiceAccount
name: filebeat
namespace: ns-elk
roleRef:
kind: Role
name: filebeat-kubeadm-config
apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: filebeat
labels:
k8s-app: filebeat
rules:
- apiGroups: [""] # "" indicates the core API group
resources:
- namespaces
- pods
- nodes
verbs:
- get
- watch
- list
- apiGroups: ["apps"]
resources:
- replicasets
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: filebeat
# should be the namespace where filebeat is running
namespace: ns-elk
labels:
k8s-app: filebeat
rules:
- apiGroups:
- coordination.k8s.io
resources:
- leases
verbs: ["get", "create", "update"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: filebeat-kubeadm-config
namespace: ns-elk
labels:
k8s-app: filebeat
rules:
- apiGroups: [""]
resources:
- configmaps
resourceNames:
- kubeadm-config
verbs: ["get"]
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: filebeat
namespace: ns-elk
labels:
k8s-app: filebeat
# kubectl -n ns-elk apply -f 08-filebeat.yaml
13. 部署 logstach
# cat 09-logstach.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: logstash-configmap
namespace: ns-elk
data:
logstash.yml: |
http.host: "0.0.0.0"
path.config: /usr/share/logstash/pipeline
logstash.conf: |
# 参考：https://www.elastic.co/guide/en/logstash/current/plugins-inputs-kafka.html
input {
kafka {
bootstrap_servers => "kafka.ns-elk.svc.cluster.local:9092"
topics => ["filebeat"]
# 保留容器日志的 json 格式
codec => "json"
}
}
filter {
date {
match => [ "timestamp" , "dd/MMM/yyyy:HH:mm:ss Z" ]
}
}
# 参考：https://www.elastic.co/guide/en/logstash/current/plugins-outputs-elasticsearch.html
output {
elasticsearch {
hosts => ["elasticsearch-service:9200"]
user => "elastic"
password => "03sWFWzGOjNOCioqcbV3"
# 参考：https://discuss.elastic.co/t/separate-indexes-for-each-kubernetes-namespace/169131/3
# 根据 kubernetes.pod.name 字段单独创建 pod 的索引
index => "%{[kubernetes][pod][name]}-%{+YYYY.MM.dd}"
}
}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: logstash-deployment
namespace: ns-elk
spec:
selector:
matchLabels:
app: logstash
replicas: 3
template:
metadata:
labels:
app: logstash
spec:
containers:
- name: logstash
image: docker.elastic.co/logstash/logstash:7.14.0
ports:
- containerPort: 5044
volumeMounts:
- name: config-volume
mountPath: /usr/share/logstash/config
- name: logstash-pipeline-volume
mountPath: /usr/share/logstash/pipeline
- mountPath: /etc/localtime
name: localtime
volumes:
- name: config-volume
configMap:
name: logstash-configmap
items:
- key: logstash.yml
path: logstash.yml
- name: logstash-pipeline-volume
configMap:
name: logstash-configmap
items:
- key: logstash.conf
path: logstash.conf
- hostPath:
path: /etc/localtime
name: localtime
---
kind: Service
apiVersion: v1
metadata:
name: logstash-service
namespace: ns-elk
spec:
selector:
app: logstash
ports:
- protocol: TCP
port: 5044
targetPort: 5044
# kubectl -n ns-elk apply -f 09-logstach.yaml
这时就可以从 kibana 上检索到日志了
收集到的日志详情
14. 其他
- 如果拉取不了 docker.elastic.co 的镜像，可以使用 https://hub.docker.com/u/awker 下的相关镜像
- 完整的项目文件在 https://github.com/py-k8s/kube-elk
