Prometheus监控K8S集群-ExternalName-endpoints-ElasticStack采集K8S集群日志实战

朱包林2025-10-06 15:59

🌟prometheus-operator部署监控K8S集群

下载源代码

bash 复制代码 
wget https://github.com/prometheus-operator/kube-prometheus/archive/refs/tags/v0.11.0.tar.gz

解压目录

bash 复制代码 
[root@master231 ~]# tar xf kube-prometheus-0.11.0.tar.gz  -C /zhu/manifests/add-ons/
[root@master231 ~]# cd /zhu/manifests/add-ons/kube-prometheus-0.11.0/
[root@master231 kube-prometheus-0.11.0]#

导入镜像

bash 复制代码 
alertmanager-v0.24.0.tar.gz
blackbox-exporter-v0.21.0.tar.gz
configmap-reload-v0.5.0.tar.gz
grafana-v8.5.5.tar.gz
kube-rbac-proxy-v0.12.0.tar.gz
kube-state-metrics-v2.5.0.tar.gz
node-exporter-v1.3.1.tar.gz
prometheus-adapter-v0.9.1.tar.gz
prometheus-config-reloader-v0.57.0.tar.gz
prometheus-operator-v0.57.0.tar.gz
prometheus-v2.36.1.tar.gz

安装Prometheus-Operator

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# kubectl apply --server-side -f manifests/setup
kubectl wait \
	--for condition=Established \
	--all CustomResourceDefinition \
	--namespace=monitoring
[root@master231 kube-prometheus-0.11.0]# kubectl apply -f manifests/

检查Prometheus是否部署成功

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# kubectl get pods -n monitoring -o wide

修改Grafana的svc

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# cat manifests/grafana-service.yaml
apiVersion: v1
kind: Service
metadata:
  ...
  name: grafana
  namespace: monitoring
spec:
  type: LoadBalancer
  ...
[root@master231 kube-prometheus-0.11.0]# 
[root@master231 kube-prometheus-0.11.0]# kubectl apply -f  manifests/grafana-service.yaml 
service/grafana configured
[root@master231 kube-prometheus-0.11.0]#

访问Grafana的WebUI

bash 复制代码 
http://10.0.0.151:3000/

默认的用户名和密码： admin/admin

🌟使用traefik暴露Prometheus的WebUI到K8S集群外部

检查traefik组件是否部署

bash 复制代码 
[root@master231 ingressroutes]# helm list -n traefik 
[root@master231 ingressroutes]# kubectl get svc,pods -n traefik

编写资源清单

yaml 复制代码 
[root@master231 ingressroutes]# cat 19-ingressRoute-prometheus.yaml
apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
  name: ingressroute-prometheus
  namespace: monitoring
spec:
  entryPoints:
  - web
  routes:
  - match: Host(`prom.zhubaolin.com`) && PathPrefix(`/`)
    kind: Rule
    services:
    - name: prometheus-k8s
      port: 9090

[root@master231 ingressroutes]# kubectl apply -f 19-ingressRoute-prometheus.yaml
ingressroute.traefik.io/ingressroute-prometheus created
[root@master231 ingressroutes]#

浏览器访问测试

bash 复制代码 
http://prom.zhubaolin.com/targets?search=

其他方案

bash 复制代码 
hostNetwork
hostPort
port-forward
NodePort
LoadBalancer 
Ingress
IngressRoute

🌟Prometheus监控云原生应用etcd案例

测试ectd metrics接口

查看etcd证书存储路径

bash 复制代码 
[root@master231 ~]# egrep "\--key-file|--cert-file|--trusted-ca-file" /etc/kubernetes/manifests/etcd.yaml
    - --cert-file=/etc/kubernetes/pki/etcd/server.crt
    - --key-file=/etc/kubernetes/pki/etcd/server.key
    - --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt

测试etcd证书访问的metrics接口

bash 复制代码 
[root@master231 ~]# curl -s --cert /etc/kubernetes/pki/etcd/server.crt  --key /etc/kubernetes/pki/etcd/server.key https://10.0.0.231:2379/metrics -k | tail

创建etcd证书的secrets并挂载到Prometheus server

查找需要挂载etcd的证书文件路径

bash 复制代码 
[root@master231 ~]# egrep "\--key-file|--cert-file|--trusted-ca-file" /etc/kubernetes/manifests/etcd.yaml  
    - --cert-file=/etc/kubernetes/pki/etcd/server.crt
    - --key-file=/etc/kubernetes/pki/etcd/server.key
    - --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt

根据etcd的实际存储路径创建secrets

bash 复制代码 
[root@master231 ~]# kubectl create secret generic etcd-tls --from-file=/etc/kubernetes/pki/etcd/server.crt --from-file=/etc/kubernetes/pki/etcd/server.key  --from-file=/etc/kubernetes/pki/etcd/ca.crt -n monitoring
secret/etcd-tls created
[root@master231 ~]# 
[root@master231 ~]# kubectl -n monitoring get secrets etcd-tls 
NAME       TYPE     DATA   AGE
etcd-tls   Opaque   3      12s
[root@master231 ~]#

修改Prometheus的资源，修改后会自动重启

bash 复制代码 
[root@master231 ~]# kubectl -n monitoring edit prometheus k8s
...
spec:
  secrets:
  - etcd-tls
  ...  

[root@master231 ~]# kubectl -n monitoring get pods -l app.kubernetes.io/component=prometheus -o wide

查看证书是否挂载成功

bash 复制代码 
[root@master231 yinzhengjie]# kubectl -n monitoring exec prometheus-k8s-0 -c prometheus -- ls -l /etc/prometheus/secrets/etcd-tls

[root@master231 yinzhengjie]# kubectl -n monitoring exec prometheus-k8s-1 -c prometheus -- ls -l /etc/prometheus/secrets/etcd-tls

编写资源清单

yaml 复制代码 
[root@master231 servicemonitors]# cat 01-smon-svc-etcd.yaml
apiVersion: v1
kind: Service
metadata:
  name: etcd-k8s
  namespace: kube-system
  labels:
    apps: etcd
spec:
  selector:
    component: etcd
  ports:
  - name: https-metrics
    port: 2379
    targetPort: 2379
  type: ClusterIP

---

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: smon-etcd
  namespace: monitoring
spec:
  # 指定job的标签，可以不设置。
  jobLabel: kubeadm-etcd-k8s
  # 指定监控后端目标的策略
  endpoints:
    # 监控数据抓取的时间间隔
  - interval: 3s
    # 指定metrics端口，这个port对应Services.spec.ports.name
    port: https-metrics
    # Metrics接口路径
    path: /metrics
    # Metrics接口的协议
    scheme: https
    # 指定用于连接etcd的证书文件
    tlsConfig:
      # 指定etcd的CA的证书文件
      caFile:  /etc/prometheus/secrets/etcd-tls/ca.crt
      # 指定etcd的证书文件
      certFile: /etc/prometheus/secrets/etcd-tls/server.crt
      # 指定etcd的私钥文件
      keyFile: /etc/prometheus/secrets/etcd-tls/server.key
      # 关闭证书校验，毕竟咱们是自建的证书，而非官方授权的证书文件。
      insecureSkipVerify: true
  # 监控目标Service所在的命名空间
  namespaceSelector:
    matchNames:
    - kube-system
  # 监控目标Service目标的标签。
  selector:
    # 注意，这个标签要和etcd的service的标签保持一致哟
    matchLabels:
      apps: etcd
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# kubectl apply -f 01-smon-svc-etcd.yaml
service/etcd-k8s created
servicemonitor.monitoring.coreos.com/smon-etcd created
[root@master231 servicemonitors]#

Prometheus查看数据

bash 复制代码 
etcd_cluster_version

Grafana导入模板

bash 复制代码 
3070

🌟Prometheus监控非云原生应用MySQL

编写资源清单

yaml 复制代码 
[root@master231 servicemonitors]# cat > 02-smon-mysqld.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql80-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: mysql80
  template:
    metadata:
      labels:
        apps: mysql80
    spec:
      containers:
      - name:  mysql
        image: harbor250.zhubl.xyz/zhubl-db/mysql:8.0.36-oracle
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: zhubaolin
        - name: MYSQL_USER
          value: zhu
        - name: MYSQL_PASSWORD
          value: "zhu"

---

apiVersion: v1
kind: Service
metadata:
  name: mysql80-service
spec:
  selector:
    apps: mysql80
  ports:
    - protocol: TCP
      port: 3306
      targetPort: 3306

---

apiVersion: v1
kind: ConfigMap
metadata:
  name: my.cnf
data:
  .my.cnf: |-
    [client]
    user = zhu
    password = zhu
    
    [client.servers]
    user = zhu
    password = zhu

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-exporter-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: mysql-exporter
  template:
    metadata:
      labels:
        apps: mysql-exporter
    spec:
      volumes:
      - name: data
        configMap:
          name: my.cnf
          items:
          - key: .my.cnf
            path: .my.cnf
      containers:
      - name:  mysql-exporter
        image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/mysqld-exporter:v0.15.1
        command:
        - mysqld_exporter
        - --config.my-cnf=/root/my.cnf
        - --mysqld.address=mysql80-service.default.svc.zhubl.xyz:3306
        securityContext:
          runAsUser: 0
        ports:
        - containerPort: 9104
        #env:
        #- name: DATA_SOURCE_NAME
        #  value: mysql_exporter:zhubaolin@(mysql80-service.default.svc.zhubl.xyz:3306)
        volumeMounts:
        - name: data
          mountPath: /root/my.cnf
          subPath: .my.cnf

---

apiVersion: v1
kind: Service
metadata:
  name: mysql-exporter-service
  labels:
    apps: mysqld
spec:
  selector:
    apps: mysql-exporter
  ports:
    - protocol: TCP
      port: 9104
      targetPort: 9104
      name: mysql80

---

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: mysql-smon
spec:
  jobLabel: kubeadm-mysql-k8s
  endpoints:
  - interval: 3s
    # 这里的端口可以写svc的端口号，也可以写svc的名称。
    # 但我推荐写svc端口名称，这样svc就算修改了端口号，只要不修改svc端口的名称，那么我们此处就不用再次修改。
    # port: 9104
    port: mysql80
    path: /metrics
    scheme: http
  namespaceSelector:
    matchNames:
    - default
  selector:
    matchLabels:
      apps: mysqld
EOF


[root@master231 servicemonitors]# kubectl apply -f 02-smon-mysqld.yaml 
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# kubectl get pods -o wide -l "apps in (mysql80,mysql-exporter)"

Prometheus访问测试

bash 复制代码 
mysql_up[30s]

Grafana导入模板

bash 复制代码 
7362
14057
17320

🌟smon监控redis实战

  • 在k8s集群部署redis服务
  • 使用smon资源监控Redis服务
  • 使用Grafana出图展示

导入redis-exporter镜像并推送到harbor仓库

bash 复制代码 
docker load -i redis_exporter-v1.74.0-alpine.tar.gz

docker tag oliver006/redis_exporter:v1.74.0-alpine harbor250.zhubl.xyz/redis/redis_exporter:v1.74.0-alpine

docker push harbor250.zhubl.xyz/redis/redis_exporter:v1.74.0-alpine

使用Smon监控redis服务

yaml 复制代码 
[root@master231 servicemonitors]# cat 03-smon-redis.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-redis
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: redis
  template:
    metadata:
      labels:
        apps: redis
    spec:
      containers:
      - image: harbor250.zhubl.xyz/redis/redis:6.0.5
        name: db
        ports:
        - containerPort: 6379

---

apiVersion: v1
kind: Service
metadata:
  name: svc-redis
spec:
  ports:
  - port: 6379
  selector:
    apps: redis

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis-exporter-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: redis-exporter
  template:
    metadata:
      labels:
        apps: redis-exporter
    spec:
      containers:
      - name:  redis-exporter
        image: harbor250.zhubl.xyz/redis/redis_exporter:v1.74.0-alpine
        env:
        - name: REDIS_ADDR
          value: redis://svc-redis.default.svc:6379 
        - name: REDIS_EXPORTER_WEB_TELEMETRY_PATH
          value: /metrics
        - name: REDIS_EXPORTER_WEB_LISTEN_ADDRESS
          value: :9121
        #command:
        #- redis_exporter
        #args:
        #- -redis.addr redis://svc-redis.default.svc:6379 
        #- -web.telemetry-path /metrics 
        #- -web.listen-address :9121
        ports:
        - containerPort: 9121

---

apiVersion: v1
kind: Service
metadata:
  name: redis-exporter-service
  labels:
    apps: redis
spec:
  selector:
    apps: redis-exporter
  ports:
    - protocol: TCP
      port: 9121
      targetPort: 9121
      name: redis-exporter

---

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: redis-smon
spec:
  endpoints:
  - interval: 3s
    port: redis-exporter
    path: /metrics
    scheme: http
  namespaceSelector:
    matchNames:
    - default
  selector:
    matchLabels:
      apps: redis


[root@master231 servicemonitors]# kubectl apply -f  03-smon-redis.yaml 
deployment.apps/deploy-redis created
service/svc-redis created
deployment.apps/redis-exporter-deployment created
service/redis-exporter-service created
servicemonitor.monitoring.coreos.com/redis-smon created
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# kubectl get pods -l "apps in (redis,redis-exporter)" -o wide

访问Prometheus的WebUI

bash 复制代码 
http://prom.zhubl.xyz/targets?search=

测试key:  redis_db_keys

导入Grafana的ID

bash 复制代码 
11835
14091

测试验证准确性

bash 复制代码 
[root@master231 servicemonitors]# kubectl exec -it deploy-redis-5db97d7958-pv8vx -- redis-cli -n 5 --raw
127.0.0.1:6379[5]> KEYS *

127.0.0.1:6379[5]> set zhu xixi
OK

写入后再次观察Grafana的数据是否准确。

🌟Alertmanager的配置文件使用自定义模板和配置文件定义

参考目录

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# pwd
/zhu/manifests/add-ons/kube-prometheus-0.11.0

参考文件

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# ll manifests/alertmanager-secret.yaml 
-rw-rw-r-- 1 root root 1443 Jun 17  2022 manifests/alertmanager-secret.yaml

Alertmanager引用cm资源

局部参考

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# cat manifests/alertmanager-alertmanager.yaml 
apiVersion: monitoring.coreos.com/v1
kind: Alertmanager
metadata:
  ...
  name: main
  namespace: monitoring
spec:
  volumes:
  - name: data
    configMap:
      name: cm-alertmanager
      items:
      - key: zhu.tmpl
        path: zhu.tmpl
  volumeMounts:
  - name: data
    mountPath: /zhu/softwares/alertmanager/tmpl
  image: quay.io/prometheus/alertmanager:v0.24.0
  ...

Prometheus的配置文件

bash 复制代码 
[root@master231 kube-prometheus-0.11.0]# ll  manifests/prometheus-prometheus.yaml
-rw-rw-r-- 1 root root 1238 Jun 17  2022 manifests/prometheus-prometheus.yaml

🌟Prometheus监控自定义程序

编写资源清单

yaml 复制代码 
[root@master231 servicemonitors]# cat 04-smon-golang-login.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-login
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: login
  template:
    metadata:
      labels:
        apps: login
    spec:
      containers:
      - name: c1
        image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:login
        resources:
          requests:
            memory: 100Mi
            cpu: 100m
          limits:
            cpu: 200m
            memory: 200Mi
        ports:
        - containerPort: 8080
          name: login-api

---

apiVersion: v1
kind: Service
metadata:
  name: svc-login
  labels:
    apps: login
spec:
  ports:
  - port: 8080
    targetPort: login-api
    name: login
  selector:
    apps: login
  type: ClusterIP


---

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: smon-login
spec:
  endpoints:
  - interval: 3s
    port: "login"
  namespaceSelector:
    matchNames:
    - default
  selector:
    matchLabels:
      apps: login

测试验证

bash 复制代码 
[root@master231 servicemonitors]# kubectl apply  -f 04-smon-golang-login.yaml 
deployment.apps/deploy-login created
service/svc-login created
servicemonitor.monitoring.coreos.com/smon-login created
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# kubectl get svc svc-login
NAME        TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
svc-login   ClusterIP   10.200.42.196   <none>        8080/TCP   6m41s
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# curl 10.200.35.71:8080/login
https://www.zhubl.xyz/zhubaolin
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# for i in `seq 10`; do curl 10.200.35.71:8080/login;done
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
https://www.zhubl.xyz/zhubaolin
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# curl -s 10.200.35.71:8080/metrics | grep application_login_api
# HELP application_login_api Count the number of visits to the /login interface
# TYPE application_login_api counter
yinzhengjie_application_login_api 11
[root@master231 servicemonitors]#

Grafana出图展示

相关的查询语句:

application_login_api

apps请求总数。

increase(application_login_api[1m])

每分钟请求数量曲线QPS。

irate(application_login_api[1m])

每分钟请求量变化率曲线

🌟ExternalName类型

ExternalName简介

ExternalName的主要作用就是将K8S集群外部的服务映射到K8S集群内部。

ExternalName是没有CLUSTER-IP地址。

创建svc

bash 复制代码 
[root@master231 servicemonitors]# cat 05-svc-ExternalName.yaml 
apiVersion: v1
kind: Service
metadata:
  name: svc-blog
spec:
  type: ExternalName
  externalName: baidu.com
[root@master231 servicemonitors]# 
[root@master231 servicemonitors]# kubectl apply -f 05-svc-ExternalName.yaml 
service/svc-blog created
[root@master231 servicemonitors]# kubectl get svc svc-blog 
NAME       TYPE           CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
svc-blog   ExternalName   <none>       baidu.com     <none>    10s
[root@master231 servicemonitors]#

测试验证

bash 复制代码 
[root@master231 services]# kubectl get svc  -n kube-system  kube-dns 
NAME       TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)                  AGE
kube-dns   ClusterIP   10.200.0.10   <none>        53/UDP,53/TCP,9153/TCP   14d
[root@master231 services]# 
[root@master231 services]# kubectl run test-dns -it --rm --image=registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1 -- sh
If you don't see a command prompt, try pressing enter.
/ # 
/ # cat /etc/resolv.conf 
nameserver 10.200.0.10

/ # nslookup -type=a svc-blog

/ # ping svc-blog -c 3

Session ended, resume using 'kubectl attach test-dns -c test-dns -i -t' command when the pod is running
pod "test-dns" deleted

温馨提示: 如果服务在K8S集群外部，且服务不在公网，而是在公司内部，则需要我们修改coreDNS的A记录。

🌟endpoints端点映射MySQL

什么是endpoints

所谓的endpoints简称为ep，除了ExternalName外的其他svc类型，每个svc都会关联一个ep资源。

当删除Service资源时，会自动删除与Service同名称的endpoints资源。

如果想要映射k8s集群外部的服务，可以先定义一个ep资源，而后再创建一个同名称的svc资源即可。

验证svc关联相应的ep资源

查看svc和ep的关联性

bash 复制代码 
[root@master231 servicemonitors]#  kubectl get svc
[root@master231 servicemonitors]#  
[root@master231 servicemonitors]# kubectl get ep
[root@master231 servicemonitors]# kubectl get svc | wc -l
8
[root@master231 servicemonitors]# kubectl get ep | wc -l
7
[root@master231 servicemonitors]#

删除svc时会自动删除同名称的ep资源

bash 复制代码 
[root@master231 endpoints]# kubectl describe svc svc-login  | grep Endpoints
Endpoints:         10.100.2.156:8080
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl describe ep svc-login 
Name:         svc-login
Namespace:    default
Labels:       apps=login
Annotations:  endpoints.kubernetes.io/last-change-trigger-time: 2025-10-03T04:21:37Z
Subsets:
  Addresses:          10.100.2.156
  NotReadyAddresses:  <none>
  Ports:
    Name   Port  Protocol
    ----   ----  --------
    login  8080  TCP

Events:  <none>
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl get svc,ep svc-login
NAME                TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
service/svc-login   ClusterIP   10.200.205.119   <none>        8080/TCP   153m

NAME                  ENDPOINTS           AGE
endpoints/svc-login   10.100.2.156:8080   153m
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl delete ep svc-login 
endpoints "svc-login" deleted
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl get svc,ep svc-login
NAME                TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
service/svc-login   ClusterIP   10.200.205.119   <none>        8080/TCP   153m

NAME                  ENDPOINTS           AGE
endpoints/svc-login   10.100.2.156:8080   5s
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl delete svc svc-login 
service "svc-login" deleted
[root@master231 endpoints]# 
[root@master231 endpoints]# kubectl get svc,ep svc-login
Error from server (NotFound): services "svc-login" not found
Error from server (NotFound): endpoints "svc-login" not found
[root@master231 endpoints]#

endpoint实战

在K8S集群外部部署MySQL数据库

bash 复制代码 
[root@harbor250 ~]# docker run --network host -d --name mysql-server -e MYSQL_ALLOW_EMPTY_PASSWORD="yes" -e MYSQL_DATABASE=wordpress -e MYSQL_USER=wordpress -e MYSQL_PASSWORD=wordpress harbor250.zhubl.xyz/zhubl-db/mysql:8.0.36-oracle

[root@harbor250 ~]# docker exec -it mysql-server mysql wordpress

mysql> SHOW TABLES;
Empty set (0.00 sec)

mysql> SELECT DATABASE();
+------------+
| DATABASE() |
+------------+
| wordpress  |
+------------+
1 row in set (0.00 sec)

mysql>

k8s集群内部部署wordpress

yaml 复制代码 
[root@master231 endpoints]# cat 01-deploy-svc-ep-wordpress.yaml
apiVersion: v1
kind: Endpoints
metadata:
  name: svc-db
subsets:
- addresses:
  - ip: 10.0.0.250
  ports:
  - port: 3306


---
apiVersion: v1
kind: Service
metadata:
  name: svc-db
spec:
  type: ClusterIP
  ports:
    - protocol: TCP
      port: 3306

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-wp
spec:
  replicas: 1
  selector:
    matchLabels:
      apps: wp
  template:
    metadata:
      labels:
        apps: wp
    spec:
      volumes:
      - name: data
        nfs: 
          server: 10.0.0.231
          path: /zhu/data/nfs-server/casedemo/wordpress/wp
      containers:
      - name: wp
        image: harbor250.zhubl.xyz/zhubl-wordpress/wordpress:6.7.1-php8.1-apache
        env:
        - name: WORDPRESS_DB_HOST
          value: "svc-db"
        - name: WORDPRESS_DB_NAME
          value: "wordpress"
        - name: WORDPRESS_DB_USER
          value: wordpress
        - name: WORDPRESS_DB_PASSWORD
          value: wordpress
        volumeMounts:
        - name: data
          mountPath: /var/www/html


---

apiVersion: v1
kind: Service
metadata:
  name: svc-wp
spec:
  type: LoadBalancer
  selector:
    apps: wp
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
      nodePort: 30090

访问测试

bash 复制代码 
http://10.0.0.231:30090/
http://10.0.0.152/

初始化wordpress

验证下数据库是否有数据

bash 复制代码 
[root@harbor250 ~]# docker exec -it mysql-server mysql -e "SHOW TABLES FROM wordpress"

🌟EFK架构分析k8s集群日志

k8s日志采集方案

边车模式(sidecar):

可以在原有的容器基础上添加一个新的容器，新的容器称为边车容器，该容器可以负责日志采集，监控，流量代理等功能。

优点: 不需要修改原有的架构，就可以实现新的功能。

缺点:

  • 1.相对来说比较消耗资源;
  • 2.获取K8S集群的Pod元数据信息相对麻烦，需要开发相关的功能;

守护进程(ds)

每个工作节点仅有一个pod。

优点: 相对边车模式更加节省资源。

缺点: 需要学习K8S的RBAC认证体系。

产品内置

说白了缺啥功能直接让开发实现即可。

优点: 运维人员省事，无需安装任何组件。

缺点: 推动较慢，因为大多数开发都是业务开发。要么就需要单独的运维开发人员来解决。

🌟ElasticStack对接K8S集群

ES集群环境准备

bash 复制代码 
[root@elk91 ~]# curl -k -u elastic:123456 https://10.0.0.91:9200/_cat/nodes
10.0.0.92 81 50 1 0.19 0.14 0.12 cdfhilmrstw - elk92
10.0.0.91 83 66 4 0.04 0.13 0.17 cdfhilmrstw - elk91
10.0.0.93 78 53 1 0.34 0.18 0.15 cdfhilmrstw * elk93
[root@elk91 ~]#

验证kibana环境

bash 复制代码 
http://10.0.0.91:5601/

启动zookeeper集群

bash 复制代码 
[root@elk91 ~]# zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@elk91 ~]# 
[root@elk91 ~]# zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: leader
[root@elk91 ~]# 

[root@elk92 ~]# zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@elk92 ~]# 
[root@elk92 ~]# zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
[root@elk92 ~]# 

[root@elk93 ~]# zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@elk93 ~]# 
[root@elk93 ~]# zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/apache-zookeeper-3.8.4-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
[root@elk93 ~]#

启动kafka集群

bash 复制代码 
[root@elk91 ~]# kafka-server-start.sh -daemon $KAFKA_HOME/config/server.properties
[root@elk91 ~]# 
[root@elk91 ~]# ss -ntl |grep 9092
LISTEN 0      50     [::ffff:10.0.0.91]:9092             *:*          
[root@elk91 ~]# 


[root@elk92 ~]# kafka-server-start.sh -daemon $KAFKA_HOME/config/server.properties
[root@elk92 ~]# 
[root@elk92 ~]# ss -ntl | grep 9092
LISTEN 0      50     [::ffff:10.0.0.92]:9092             *:*          
[root@elk92 ~]# 

	
[root@elk93 ~]# kafka-server-start.sh -daemon $KAFKA_HOME/config/server.properties
[root@elk93 ~]# 
[root@elk93 ~]# ss -ntl | grep 9092
LISTEN 0      50     [::ffff:10.0.0.93]:9092             *:*          
[root@elk93 ~]#

检查zookeeper的信息

bash 复制代码 
[root@elk93 ~]# zkCli.sh -server 10.0.0.91:2181,10.0.0.92:2181,10.0.0.93:2181
Connecting to 10.0.0.91:2181,10.0.0.92:2181,10.0.0.93:2181
...

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: 10.0.0.91:2181,10.0.0.92:2181,10.0.0.93:2181(CONNECTED) 0] ls /kafka391/brokers/ids
[91, 92, 93]
[zk: 10.0.0.91:2181,10.0.0.92:2181,10.0.0.93:2181(CONNECTED) 1]

编写资源清单将Pod日志数据写入kafka集群

yaml 复制代码 
[root@master231 elasticstack]# cat  01-sidecar-cm-ep-filebeat.yaml
apiVersion: v1
kind: Endpoints
metadata:
  name: svc-kafka
subsets:
- addresses:
  - ip: 10.0.0.91
  - ip: 10.0.0.92
  - ip: 10.0.0.93
  ports:
  - port: 9092


---
apiVersion: v1
kind: Service
metadata:
  name: svc-kafka
spec:
  type: ClusterIP
  ports:
    - protocol: TCP
      port: 9092


---

apiVersion: v1
kind: ConfigMap
metadata: 
  name: cm-filebeat
data:
  main: |
    filebeat.config.modules:
      path: ${path.config}/modules.d/*.yml
      reload.enabled: true
     
    output.kafka:
     hosts: 
     - svc-kafka:9092
     topic: "linux99-k8s-external-kafka"
   

  nginx.yml: |
    - module: nginx
      access:
        enabled: true
        var.paths: ["/data/access.log"]
    
      error:
        enabled: false
        var.paths: ["/data/error.log"]
    
      ingress_controller:
        enabled: false

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-xiuxian
spec:
  replicas: 3
  selector:
    matchLabels:
      apps: elasticstack
      version: v3
  template:
    metadata:
      labels:
        apps: elasticstack
        version: v3
    spec:
      volumes:
      - name: dt
        hostPath:
          path: /etc/localtime
      - name: data
        emptyDir: {}
      - name: main
        configMap:
          name: cm-filebeat
          items:
          - key: main
            path: modules-to-es.yaml
          - key: nginx.yml
            path: nginx.yml
      containers:
      - name: c1
        image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1
        volumeMounts:
        - name: data
          mountPath: /var/log/nginx
        - name: dt
          mountPath: /etc/localtime
      - name: c2
        image: harbor250.zhubl.xyz/elasticstack/filebeat:7.17.25
        volumeMounts:
        - name: dt
          mountPath: /etc/localtime
        - name: data
          mountPath: /data
        - name: main
          mountPath: /config/modules-to-es.yaml
          subPath: modules-to-es.yaml
        - name: main
          mountPath: /usr/share/filebeat/modules.d/nginx.yml
          subPath: nginx.yml
        command:
        - /bin/bash
        - -c
        - "filebeat -e -c /config/modules-to-es.yaml --path.data /tmp/xixi"
[root@master231 elasticstack]# 
[root@master231 elasticstack]# kubectl apply -f  01-ds-cm-ep-filebeat.yaml 
endpoints/svc-kafka created
service/svc-kafka created
configmap/cm-filebeat created
deployment.apps/deploy-xiuxian created
[root@master231 elasticstack]# 
[root@master231 elasticstack]# kubectl get pods -o wide -l version=v3 
NAME                              READY   STATUS    RESTARTS   AGE   IP             NODE        NOMINATED NODE   READINESS GATES
deploy-xiuxian-59c585c878-hd9lm   2/2     Running   0          8s    10.100.2.163   worker233   <none>           <none>
deploy-xiuxian-59c585c878-pdnc6   2/2     Running   0          8s    10.100.2.162   worker233   <none>           <none>
deploy-xiuxian-59c585c878-wp9r7   2/2     Running   0          8s    10.100.1.19    worker232   <none>           <none>
[root@master231 elasticstack]#

访问业务的Pod日志

bash 复制代码 
[root@master231 services]# curl  10.100.2.163 
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>yinzhengjie apps v1</title>
    <style>
       div img {
          width: 900px;
          height: 600px;
          margin: 0;
       }
    </style>
  </head>

  <body>
    <h1 style="color: green">凡人修仙传 v1 </h1>
    <div>
      <img src="1.jpg">
    <div>
  </body>

</html>
[root@master231 services]# 
[root@master231 services]# curl  10.100.2.163/zhubaolin.html
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.20.1</center>
</body>
</html>
[root@master231 services]#

验证数据

bash 复制代码 
[root@elk92 ~]# kafka-topics.sh --bootstrap-server 10.0.0.93:9092 --list | grep kafka
linux99-k8s-external-kafka
[root@elk92 ~]# 
[root@elk92 ~]# kafka-console-consumer.sh --bootstrap-server 10.0.0.93:9092 --topic linux99-k8s-external-kafka --from-beginning  
{"@timestamp":"2025-10-03T08:31:46.489Z","@metadata":{"beat":"filebeat","type":"_doc","version":"7.17.25","pipeline":"filebeat-7.17.25-nginx-access-pipeline"},"event":{"dataset":"nginx.access","module":"nginx","timezone":"+00:00"},"agent":{"hostname":"deploy-xiuxian-59c585c878-hd9lm","ephemeral_id":"427bd79b-a24f-4eaf-bea4-e9b3630cba8e","id":"cfe013d3-a60a-4dd6-a766-5b5a4f13711c","name":"deploy-xiuxian-59c585c878-hd9lm","type":"filebeat","version":"7.17.25"},"fileset":{"name":"access"},"ecs":{"version":"1.12.0"},"host":{"name":"deploy-xiuxian-59c585c878-hd9lm"},"message":"10.100.0.0 - - [03/Oct/2025:08:31:37 +0000] \"GET / HTTP/1.1\" 200 357 \"-\" \"curl/7.81.0\" \"-\"","log":{"offset":0,"file":{"path":"/data/access.log"}},"service":{"type":"nginx"},"input":{"type":"log"}}
{"@timestamp":"2025-10-03T08:33:41.495Z","@metadata":{"beat":"filebeat","type":"_doc","version":"7.17.25","pipeline":"filebeat-7.17.25-nginx-access-pipeline"},"host":{"name":"deploy-xiuxian-59c585c878-hd9lm"},"agent":{"name":"deploy-xiuxian-59c585c878-hd9lm","type":"filebeat","version":"7.17.25","hostname":"deploy-xiuxian-59c585c878-hd9lm","ephemeral_id":"427bd79b-a24f-4eaf-bea4-e9b3630cba8e","id":"cfe013d3-a60a-4dd6-a766-5b5a4f13711c"},"log":{"file":{"path":"/data/access.log"},"offset":91},"message":"10.100.0.0 - - [03/Oct/2025:08:33:38 +0000] \"GET /zhubl.html HTTP/1.1\" 404 153 \"-\" \"curl/7.81.0\" \"-\"","service":{"type":"nginx"},"ecs":{"version":"1.12.0"},"input":{"type":"log"},"event":{"dataset":"nginx.access","module":"nginx","timezone":"+00:00"},"fileset":{"name":"access"}}

logstash采集并分析数据后写入ES集群

bash 复制代码 
[root@elk93 ~]# cat /etc/logstash/conf.d/11-kafka_k8s-to-es.conf 
input { 
  kafka {
     bootstrap_servers => "10.0.0.91:9092,10.0.0.92:9092,10.0.0.93:9092"
     group_id => "k8s-006"
     topics => ["k8s-external-kafka"]
     auto_offset_reset => "earliest"
  }
}  

filter {
  json {
    source => "message"
  }

  mutate {
    remove_field => [ "tags","input","agent","@version","ecs" , "log", "host"]
  }

  grok {
    match => {
      "message" => "%{HTTPD_COMMONLOG}"
    }
  }

  geoip {
     source => "clientip"

     database => "/root/GeoLite2-City_20250311/GeoLite2-City.mmdb"

     default_database_type => "City"
  }

  date {
     match => [ "timestamp", "dd/MMM/yyyy:HH:mm:ss Z" ]
  }

  useragent {
     source => "message"
     target => "useragent"
  }

}

output { 

 # stdout { 
 #   codec => rubydebug 
 # } 


  elasticsearch {
    hosts => ["https://10.0.0.91:9200","https://10.0.0.92:9200","https://10.0.0.93:9200"]
    index => "logstash-kafka-k8s-%{+YYYY.MM.dd}"
    api_key => "a-g-qZkB4BpGEtwMU0Mu:Wy9ivXwfQgKbUSPLY-YUhg"
    ssl => true
    ssl_certificate_verification => false
  }
}

[root@elk93 ~]# logstash -rf /etc/logstash/conf.d/11-kafka_k8s-to-es.conf

kibana出图展示

🌟基于ds模式采集k8s的Pod日志

删除上一步环境

bash 复制代码 
[root@master231 elasticstack]# kubectl delete -f 01-sidecar-cm-ep-filebeat.yaml
endpoints "svc-kafka" deleted
service "svc-kafka" deleted
configmap "cm-filebeat" deleted
deployment.apps "deploy-xiuxian" deleted

编写资源清单

yaml 复制代码 
[root@master231 elasticstack]# cat 02-ds-cm-ep-filebeat.yaml 
apiVersion: v1
kind: Endpoints
metadata:
  name: svc-kafka
subsets:
- addresses:
  - ip: 10.0.0.91
  - ip: 10.0.0.92
  - ip: 10.0.0.93
  ports:
  - port: 9092


---
apiVersion: v1
kind: Service
metadata:
  name: svc-kafka
spec:
  type: ClusterIP
  ports:
    - protocol: TCP
      port: 9092


---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: deploy-xiuxian
spec:
  replicas: 3
  selector:
    matchLabels:
      apps: elasticstack-xiuxian
  template:
    metadata:
      labels:
        apps: elasticstack-xiuxian
    spec:
      volumes:
      - name: dt
        hostPath:
          path: /etc/localtime
      containers:
      - name: c1
        image: registry.cn-hangzhou.aliyuncs.com/yinzhengjie-k8s/apps:v1
        volumeMounts:
        - name: dt
          mountPath: /etc/localtime

---

apiVersion: v1
kind: ServiceAccount
metadata:
  name: filebeat

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: filebeat
subjects:
- kind: ServiceAccount
  name: filebeat
  namespace: default
roleRef:
  kind: ClusterRole
  name: filebeat
  apiGroup: rbac.authorization.k8s.io

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: filebeat
  labels:
    k8s-app: filebeat
rules:
- apiGroups: [""]
  resources:
  - namespaces
  - pods
  - nodes
  verbs:
  - get
  - watch
  - list

---

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
data:
  filebeat.yml: |-
    filebeat.config:
      inputs:
        path: ${path.config}/inputs.d/*.yml
        reload.enabled: true
      modules:
        path: ${path.config}/modules.d/*.yml
        reload.enabled: true

    output.kafka:
     hosts: 
     - svc-kafka:9092
     topic: "k8s-external-kafka-ds"

---

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-inputs
data:
  kubernetes.yml: |-
    - type: docker
      containers.ids:
      - "*"
      processors:
        - add_kubernetes_metadata:
            in_cluster: true

---

apiVersion: apps/v1 
kind: DaemonSet
metadata:
  name: filebeat
spec:
  selector:
    matchLabels:
      k8s-app: filebeat
  template:
    metadata:
      labels:
        k8s-app: filebeat
    spec:
      tolerations:
      - key: node-role.kubernetes.io/master
        effect: NoSchedule
        operator: Exists
      serviceAccountName: filebeat
      terminationGracePeriodSeconds: 30
      containers:
      - name: filebeat
        image: harbor250.zhubl.xyz/elasticstack/filebeat:7.17.25
        args: [
          "-c", "/etc/filebeat.yml",
          "-e",
        ]
        securityContext:
          runAsUser: 0
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - name: config
          mountPath: /etc/filebeat.yml
          readOnly: true
          subPath: filebeat.yml
        - name: inputs
          mountPath: /usr/share/filebeat/inputs.d
          readOnly: true
        - name: varlibdockercontainers
          mountPath: /var/lib/docker/containers
          readOnly: true
      volumes:
      - name: config
        configMap:
          defaultMode: 0600
          name: filebeat-config
      - name: varlibdockercontainers
        hostPath:
          path: /var/lib/docker/containers
      - name: inputs
        configMap:
          defaultMode: 0600
          name: filebeat-inputs

[root@master231 elasticstack]#

创建资源

bash 复制代码 
[root@master231 elasticstack]# kubectl get pods -o wide -l k8s-app=filebeat
NAME             READY   STATUS    RESTARTS   AGE   IP             NODE        NOMINATED NODE   READINESS GATES
filebeat-8dnxs   1/1     Running   0          56s   10.100.0.4     master231   <none>           <none>
filebeat-mdcd2   1/1     Running   0          56s   10.100.2.166   worker233   <none>           <none>
filebeat-z4jdr   1/1     Running   0          56s   10.100.1.21    worker232   <none>           <none>
[root@master231 elasticstack]# 
[root@master231 elasticstack]# 
[root@master231 elasticstack]# kubectl get pods -o wide -l  apps=elasticstack-xiuxian
NAME                              READY   STATUS    RESTARTS   AGE   IP             NODE        NOMINATED NODE   READINESS GATES
deploy-xiuxian-74d9748b99-2rp8v   1/1     Running   0          83s   10.100.1.20    worker232   <none>           <none>
deploy-xiuxian-74d9748b99-mdpnf   1/1     Running   0          83s   10.100.2.165   worker233   <none>           <none>
deploy-xiuxian-74d9748b99-psnk7   1/1     Running   0          83s   10.100.2.164   worker233   <none>           <none>
[root@master231 elasticstack]# 
[root@master231 elasticstack]#

kafka验证测试

bash 复制代码 
[root@elk92 ~]# kafka-topics.sh --bootstrap-server 10.0.0.93:9092 --list | grep ds
linux99-k8s-external-kafka-ds
[root@elk92 ~]# 
[root@elk92 ~]# kafka-console-consumer.sh --bootstrap-server 10.0.0.93:9092 --topic linux99-k8s-external-kafka-ds --from-beginning

logstash写入数据到ES集群

bash 复制代码 
[root@elk93 ~]# cat /etc/logstash/conf.d/12-kafka_k8s_ds-to-es.conf
input { 
  kafka {
     bootstrap_servers => "10.0.0.91:9092,10.0.0.92:9092,10.0.0.93:9092"
     group_id => "k8s-001"
     topics => ["linux99-k8s-external-kafka-ds"]
     auto_offset_reset => "earliest"
  }
}  

filter {
  json {
    source => "message"
  }

  mutate {
    remove_field => [ "tags","input","agent","@version","ecs" , "log", "host"]
  }

  grok {
    match => {
      "message" => "%{HTTPD_COMMONLOG}"
    }
  }

  geoip {
     source => "clientip"

     database => "/root/GeoLite2-City_20250311/GeoLite2-City.mmdb"

     default_database_type => "City"
  }

  date {
     match => [ "timestamp", "dd/MMM/yyyy:HH:mm:ss Z" ]
  }

  useragent {
     source => "message"
     target => "linux99-useragent"
  }

}

output { 

 # stdout { 
 #   codec => rubydebug 
 # } 


  elasticsearch {
    hosts => ["https://10.0.0.91:9200","https://10.0.0.92:9200","https://10.0.0.93:9200"]
    index => "logstash-kafka-k8s-ds-%{+YYYY.MM.dd}"
    api_key => "a-g-qZkB4BpGEtwMU0Mu:Wy9ivXwfQgKbUSPLY-YUhg"
    ssl => true
    ssl_certificate_verification => false
  }
}
[root@elk93 ~]# 
[root@elk93 ~]# logstash -rf /etc/logstash/conf.d/12-kafka_k8s_ds-to-es.conf

kibana查询数据并测试验证

访问测试

bash 复制代码 
[root@master231 elasticstack]# curl 10.100.1.20
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>yinzhengjie apps v1</title>
    <style>
       div img {
          width: 900px;
          height: 600px;
          margin: 0;
       }
    </style>
  </head>

  <body>
    <h1 style="color: green">凡人修仙传 v1 </h1>
    <div>
      <img src="1.jpg">
    <div>
  </body>

</html>
[root@master231 elasticstack]# 
[root@master231 elasticstack]# curl 10.100.1.20/zhu.html
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.20.1</center>
</body>
</html>
[root@master231 elasticstack]#

kibana基于KQL查询

bash 复制代码 
kubernetes.pod.name : "deploy-xiuxian-74d9748b99-2rp8v"
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