ELK 日志收集

我会带着你远行 2024-04-03 06:53 79阅读 0赞

#### 文章目录 ####

*  方案
 *  部署 FileBeat
 *   *  helm部署
     *  yaml 部署
 *  部署 Elastic
 *   *  安装 eck
     *  安装 elastic
 *  部署 Kibana

## 方案 ##

1.  部署 FileBeat 从集群每个节点**采集**日志
2.  FileBeat **发送**日志到 ElasticSearch 并保存
3.  部署 Kibana **展示** ElasticSearch 数据

采集

发送

展示

节点

FileBeat

节点

FileBeat

节点

FileBeat

Elastic

Kibana

## 部署 FileBeat ##

### helm部署 ###

> 官方文档： https://github.com/elastic/helm-charts/tree/master/filebeat

部署命令

helm repo add elastic https://helm.elastic.co
    helm install fb elastic/filebeat -f values.yaml -n kube-system

当前最新为 8.5.1，但本文使用 7.17 版本  
![在这里插入图片描述][adefb3c23f434f88b9919f1a190bf4a8.png]

values.yaml 文件

> 配置参考文档：https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-input-container.html

> input.paths：模糊匹配需要收集的日志路径  
> input.fields：定义收集日志的 key  
> input.fields\_under\_root：设置 ture，fields存储在输出文档的顶级位置，参考文章 ：[filebeat输出结果到elasticsearch的多个索引][filebeat_elasticsearch]  
> setup.template：自定义索引  
> setup.ilm.enabled：设置 falsel；若启用，则忽略 output.elasticsearch.index 的设置  
> output.elasticsearch.indices.index：设置 elastic 的索引  
> output.elasticsearch.indices.when.contains：对应 input 的 fields

filebeatConfig:
      filebeat.yml: |
        filebeat.inputs:
        - type: container
          paths:
            - /var/log/containers/*dev_permission-service*.log
          fields:
            app_id: "dev-permission"
          fields_under_root: true
            
        - type: container
          paths:
            - /var/log/containers/*dev_converter-service*.log
          fields:
            app_id: "dev-converter"
          fields_under_root: true
          
        setup.template.enabled: true
        setup.template.fields: fields.yml
        setup.template.name: "k8s"
        setup.template.pattern: "k8s-*"
        setup.template.enabled: true
        setup.ilm.enabled: false
    
        output.elasticsearch:
          index: "k8s-other"
          username: 'elastic'
          password: 'xxxxx'
          protocol: http
          hosts: ["http://elsmy.saas.api.gd-njc.com:80"]
          indices:
          - index: "k8s-dev-permission-%{+yyyy.MM.dd}"
            when.contains:
              app_id: "dev-permission"
          - index: "k8s-dev-converter-%{+yyyy.MM.dd}"
            when.contains:
              app_id: "dev-converter"

### yaml 部署 ###

> 官方文档：https://www.elastic.co/guide/en/beats/filebeat/current/running-on-kubernetes.html

编辑 filebeat-kubernetes.yaml

---
    apiVersion: v1
    kind: ConfigMap
    metadata:
      name: filebeat-config
      namespace: kube-system
      labels:
        k8s-app: filebeat
    data:
      filebeat.yml: |-
        filebeat.inputs:
        - type: container
          paths:
            - /var/log/containers/*dev_permission-service*.log
          fields:
            app_id: "dev-permission"
          fields_under_root: true
            
        - type: container
          paths:
            - /var/log/containers/*dev_converter-service*.log
          fields:
            app_id: "dev-converter"
          fields_under_root: true
          
        setup.template.enabled: true
        setup.template.fields: fields.yml
        setup.template.name: "k8s"
        setup.template.pattern: "k8s-*"
        setup.template.enabled: true
        setup.ilm.enabled: false
    
        output.elasticsearch:
          index: "k8s-other"
          username: 'elastic'
          password: 'xxxxx'
          protocol: http
          hosts: ["http://elsmy.saas.api.gd-njc.com:80"]
          indices:
          - index: "k8s-dev-permission-%{+yyyy.MM.dd}"
            when.contains:
              app_id: "dev-permission"
          - index: "k8s-dev-converter-%{+yyyy.MM.dd}"
            when.contains:
              app_id: "dev-converter"
    ---
    apiVersion: apps/v1
    kind: DaemonSet
    metadata:
      name: filebeat
      namespace: kube-system
      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:8.4.2
            args: [
              "-c", "/etc/filebeat.yml",
              "-e",
            ]
            env:
            - name: ELASTICSEARCH_HOST
              value: elasticsearch
            - name: ELASTICSEARCH_PORT
              value: "9200"
            - name: ELASTICSEARCH_USERNAME
              value: elastic
            - name: ELASTICSEARCH_PASSWORD
              value: changeme
            - name: ELASTIC_CLOUD_ID
              value:
            - name: ELASTIC_CLOUD_AUTH
              value:
            - 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
            - name: varlog
              mountPath: /var/log
              readOnly: true
          volumes:
          - name: config
            configMap:
              defaultMode: 0640
              name: filebeat-config
          - name: varlibdockercontainers
            hostPath:
              path: /var/lib/docker/containers
          - name: varlog
            hostPath:
              path: /var/log
          # 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: kube-system
    roleRef:
      kind: ClusterRole
      name: filebeat
      apiGroup: rbac.authorization.k8s.io
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: RoleBinding
    metadata:
      name: filebeat
      namespace: kube-system
    subjects:
      - kind: ServiceAccount
        name: filebeat
        namespace: kube-system
    roleRef:
      kind: Role
      name: filebeat
      apiGroup: rbac.authorization.k8s.io
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: RoleBinding
    metadata:
      name: filebeat-kubeadm-config
      namespace: kube-system
    subjects:
      - kind: ServiceAccount
        name: filebeat
        namespace: kube-system
    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"]
    - apiGroups: ["batch"]
      resources:
        - jobs
      verbs: ["get", "list", "watch"]
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: Role
    metadata:
      name: filebeat
      # should be the namespace where filebeat is running
      namespace: kube-system
      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: kube-system
      labels:
        k8s-app: filebeat
    rules:
      - apiGroups: [""]
        resources:
          - configmaps
        resourceNames:
          - kubeadm-config
        verbs: ["get"]
    ---
    apiVersion: v1
    kind: ServiceAccount
    metadata:
      name: filebeat
      namespace: kube-system
      labels:
        k8s-app: filebeat
    ---

部署命令

kubectl apply -f filebeat-kubernetes.yaml

## 部署 Elastic ##

> 官网：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-quickstart.html

### 安装 eck ###

> 官网：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-deploy-eck.html

安装 crds 和 operator

kubectl create -f https://download.elastic.co/downloads/eck/2.5.0/crds.yaml
    kubectl apply -f https://download.elastic.co/downloads/eck/2.5.0/operator.yaml

查看 operator 运行日志

kubectl -n elastic-system logs -f statefulset.apps/elastic-operator

![在这里插入图片描述][33da47cb23d5464ea5c9ecbe4320c543.png]

### 安装 elastic ###

部署命令

kubectl apply -f deployment.yaml

deployment.yaml 文件

> namespace：配置命名空间  
> tls：关闭 tls 协议，配置文章：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-transport-settings.html  
> storageClassName：配置存储卷，可以参考文章 [nfs-client][]  
> storage：配置存储空间，预设 10Gi，配置文章：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-volume-claim-templates.html  
> resources：配置最大最小内存，配置文章：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-managing-compute-resources.html  
> ES\_JAVA\_OPTS：配置最大最小 java 内存，配置文章：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-jvm-heap-dumps.html

apiVersion: elasticsearch.k8s.elastic.co/v1
    kind: Elasticsearch # 需要安装es operator
    metadata:
      name: es
      namespace: els-test
    spec:
      version: 7.11.2
      http:
        tls:
          selfSignedCertificate:
            disabled: true
      nodeSets:
        - name: es
          count: 3
          volumeClaimTemplates:
            - metadata:
                name: elasticsearch-data
              spec:
                accessModes:
                  - ReadWriteOnce
                resources:
                  requests:
                    storage: 10Gi
                storageClassName: nfs-client
          podTemplate:
            spec:           
              containers:
                - name: elasticsearch
                  env:
                    - name: ES_JAVA_OPTS
                      value: "-Xms2g -Xmx2g"
                  resources:
                    requests:
                      memory: 3Gi
                    limits:
                      memory: 3Gi

**部署结果**  
![在这里插入图片描述][a6e2fe9c107242bdaeef554db26f90eb.png]

**解决报错**

报错信息：

> ERROR: \[1\] bootstrap checks failed  
> \[1\]: max virtual memory areas vm.max\_map\_count \[65530\] is too low, increase to at least \[262144\]

解决报错

1.  修改配置： vi /etc/sysctl.conf
2.  添加配置： vm.max\_map\_count=655360
3.  并=执行命令： sysctl -p
4.  检查：sysctl -a | grep vm.max\_map\_count

**登录**  
账号：elastic  
密码：

kubectl  get secret es-es-elastic-user -n els-test -o=jsonpath='{.data.elastic}' | base64 --decode

![在这里插入图片描述][a0f4f511eeca41f3913ceacf9e8bedee.png]

配置 ingress 或 nodeport ，参考文章：[ingress 部署][ingress]  
![在这里插入图片描述][a2963083415842fbb244da93655edd51.png]

结果如下即 elastic 部署成功，cluster\_name 是 es

![在这里插入图片描述][8b4e3237d5ff471bb40b84f9f5fbb7d2.png]

查看elastic集群索引信息：/\_cat/indices?v  
![在这里插入图片描述][f59f6f9606d34d859ac32321ce3e52c2.png]

## 部署 Kibana ##

部署命令

kubectl apply -f kibana.yaml

kibana.yaml

> namespace：和 elastic 一样  
> tls：关闭 tls 协议  
> elasticsearchRef：和 elastic 的 cluster\_name 一样  
> 编写 deployment.yaml 文件

apiVersion: kibana.k8s.elastic.co/v1
    kind: Kibana
    metadata:
      name: kibana
      namespace: els-test
    spec:
      version: 7.11.2
      count: 1
      elasticsearchRef:
        name: es
      http:
        tls:
          selfSignedCertificate:
            disabled: true

部署结果  
![在这里插入图片描述][39af23297164453fb962eb8882c58de9.png]

配置 ingress 或 nodeport ，参考文章：[ingress 部署][ingress]  
![在这里插入图片描述][84f448ce201c49a5a58d6ede3cc374f2.png]

配置索引正则： \[manage space\] -> \[index patterns\]  
![在这里插入图片描述][7cf514bbaddb4b228e14b7bbd6b31682.png]  
创建索引正则匹配  
![在这里插入图片描述][274721bcf737472bbce9139bcdc7d777.png]

在 discover 可以选择配置好的正则  
![在这里插入图片描述][6842d97910da455b8440e448010b2478.png]

选择 message，只看日志消息  
![在这里插入图片描述][dcb772a0f1f649a38e5bff8d792b5a70.png]

[adefb3c23f434f88b9919f1a190bf4a8.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/8135eab56506482c97a66649a1113788.png
[filebeat_elasticsearch]: https://www.cnblogs.com/lijiaman/p/14116865.html
[33da47cb23d5464ea5c9ecbe4320c543.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/9a255b66fdc7418f997e7e2257f4c010.png
[nfs-client]: https://blog.csdn.net/weixin_42555971/article/details/125004265
[a6e2fe9c107242bdaeef554db26f90eb.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/0b3f8421e636481397891727b3c3b00f.png
[a0f4f511eeca41f3913ceacf9e8bedee.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/fdbc9559ed0b471b9fd008b5d667b0e4.png
[ingress]: https://blog.csdn.net/weixin_42555971/article/details/124895108
[a2963083415842fbb244da93655edd51.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/6e67f122035c4310b86ad16e0b32ee20.png
[8b4e3237d5ff471bb40b84f9f5fbb7d2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/3ad7cec52d33458c8772e81952d488c3.png
[f59f6f9606d34d859ac32321ce3e52c2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/3e6b029733694f1db64719935ba6ba64.png
[39af23297164453fb962eb8882c58de9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/1ab3bc49de804af3be77b5921ecad53c.png
[84f448ce201c49a5a58d6ede3cc374f2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/a2098856fa0e472ab651462166da7b95.png
[7cf514bbaddb4b228e14b7bbd6b31682.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/0c72e57f128f4243821dc5cd77b7e11c.png
[274721bcf737472bbce9139bcdc7d777.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/514438b3627a4980967b99d53112c1cb.png
[6842d97910da455b8440e448010b2478.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/9cac8f04450f40c79f7ae3c65a07626e.png
[dcb772a0f1f649a38e5bff8d792b5a70.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/51dbc6b8a6694ff899eb7dae215fd512.png