【SkyWalking】使用PostgreSQL做存储&K8s部署

原创已于 2024-06-07 23:24:33 修改

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#SkyWalking #PostgreSQL #K8s #Kubernetes #微服务 #链路追踪

于 2024-06-07 23:23:26 首次发布

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拉取镜像

docker pull apache/skywalking-ui:10.0.1
docker tag apache/skywalking-ui:10.0.1 xxx/xxx/skywalking-ui:10.0.1
docker push xxx/xxx/skywalking-ui:10.0.1

docker pull apache/skywalking-oap-server:10.0.1
docker tag apache/skywalking-oap-server:10.0.1 xxx/xxx/skywalking-oap-server:10.0.1
docker push xxx/xxx/skywalking-oap-server:10.0.1

源码制作镜像

# 拉取源码
git clone -b v10.0.1 https://github.com/apache/skywalking.git
# 进入源码目录
cd skywalking

# 为了提高maven依赖下载速度，需要在~/.m2目录下创建settings.xml文件
# 修改settings.xml文件，指定私服nexus地址

# 必须指定JAVA_HOME变量
export JAVA_HOME=/home/xxx/镜像制作/jdk-17.0.2
# 运行制作镜像脚本
nohup make docker SKIP_TEST=true OAP_NAME=skywalking-oap-server UI_NAME=skywalking-ui HUB=xxx/xxx TAG=10.0.1 &
# 查看制作的镜像
docker image ls | grep skywalking

官网下载程序包制作镜像

# 下载可直接运行的程序包
wget https://dlcdn.apache.org/skywalking/10.0.1/apache-skywalking-apm-10.0.1.tar.gz

# 解压&编写Dockerfile&编写构建脚本
[root@k8s1 skywalking]# ll
total 8
drwxr-xr-x 9 root root  201 Jun  7 18:09 apache-skywalking-apm-bin
-rwxr-xr-x 1 root root  317 Jun  7 18:18 docker-build.sh
-rw-r--r-- 1 root root 2604 Jun  7 18:42 Dockerfile

Dockerfile

Dockerfile核心内容如下

FROM xxx/xxx/openjdk-utils:17.0.2
# 维护者
MAINTAINER best572@sina.com

# 解决时区问题
ENV TIME_ZONE="Asia/Shanghai"
RUN ln -snf /usr/share/zoneinfo/$TIME_ZONE /etc/localtime && echo $TIME_ZONE > /etc/timezone

# sleep几秒后，logs目录下才会有日志文件
ENTRYPOINT cd apache-skywalking-apm-bin/bin && ./startup.sh &&\
           pwd && sleep 10 && ls ../logs &&\
           tail -fn200 ../logs/skywalking-oap-server.log

构建脚本

version=10.0.1
APP_NAME=skywalking-${version}

# 删除旧镜像
#docker rmi -f xxx/xxx/skywalking:$version
# 构建镜像
docker build -t xxx/xxx/skywalking:$version .
docker push xxx/xxx/skywalking:$version

数据库

初始化PostgreSQL数据库

CREATE DATABASE "skywalking" WITH ENCODING = 'UTF8' CONNECTION LIMIT = -1 IS_TEMPLATE = False;
CREATE ROLE skywalking WITH LOGIN NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT NOREPLICATION NOBYPASSRLS CONNECTION LIMIT -1 PASSWORD 'skywalking';
COMMENT ON ROLE skywalking IS 'skywalking';
GRANT ALL PRIVILEGES ON DATABASE "skywalking" TO skywalking;
GRANT ALL ON SCHEMA PUBLIC TO skywalking;

k8s部署SkyWalking

kubectl apply -f skywalking.yaml

skywalking.yaml如下

---
apiVersion: v1
kind: Service
metadata:
  name: skywalking
  namespace: kube-public
  labels:
    app: skywalking
spec:
  type: NodePort
  ports:
    - name: oap-http
      port: 12800
      targetPort: 12800
      nodePort: 12800
    - name: grpc
      port: 11800
      targetPort: 11800
      nodePort: 11800
    - name: ui-http
      port: 22800
      targetPort: 8080
      nodePort: 22800
  selector:
    app: skywalking
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: skywalking
  namespace: kube-public
spec:
  replicas: 1
  revisionHistoryLimit: 0 #Replica Sets中的历史数量
  selector:
    matchLabels:
      app: skywalking
  template:
    metadata:
      labels:
        app: skywalking
    spec:
      # 第一次运行的时候初始化一次
#      initContainers:
#        - name: oap-init
#          image: xxx/xxx/skywalking:10.0.1
#          imagePullPolicy: Always
#          command: [ "sh" ]
#          args: ["-c","pwd && ls -lhrt && cd apache-skywalking-apm-bin/bin && ./oapServiceInit.sh && pwd && sleep 10 && ls ../logs"]
      containers:
        - name: skywalking
          imagePullPolicy: Always
          image: xxx/xxx/skywalking:10.0.1
          # 导入环境变量
          envFrom:
            # 使用configMap
            - configMapRef:
                # name为configMap中的metadata name
                name: app-public-cm
            - secretRef:
                name: app-public-secret
          env:
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: SW_STORAGE
              value: "postgresql"
            - name: SW_JDBC_URL
              value: "jdbc:postgresql://xxx:5432/skywalking"
            - name: SW_DATA_SOURCE_USER
              value: "skywalking"
            - name: SW_DATA_SOURCE_PASSWORD
              value: "skywalking"
          ports:
            - containerPort: 11800
              protocol: TCP
              name: grpc
            - containerPort: 12800
              protocol: TCP
              name: oap-http
            - containerPort: 8080
              protocol: TCP
              name: ui-http
          livenessProbe:
            httpGet:
              path: /internal/l7check
              port: 12800
            initialDelaySeconds: 300
            timeoutSeconds: 30
            periodSeconds: 60
            successThreshold: 1
            failureThreshold: 10
          readinessProbe:
            httpGet:
              path: /internal/l7check
              port: 12800
            initialDelaySeconds: 300
            timeoutSeconds: 30
            periodSeconds: 10
            successThreshold: 1
            failureThreshold: 5
          startupProbe:
            httpGet:
              path: /internal/l7check
              port: 12800
            initialDelaySeconds: 300
            timeoutSeconds: 30
            periodSeconds: 10
            successThreshold: 1
            failureThreshold: 5
          resources:
            requests:
              cpu: 0.2
              memory: 1Gi
            limits:
              cpu: 1
              memory: 2Gi
      imagePullSecrets:
        - name: puller

agent环境变量

- name: SW_AGENT_NAME
  value: "Your_ApplicationName"
# skywalking oap 地址
- name: SW_AGENT_COLLECTOR_BACKEND_SERVICES
  value: "skywalking.kube-public:11800"
# 日志路径
- name: SW_LOGGING_DIR
  value: "/xxx/skywalking-agent/logs"
# 日志级别，默认: INFO
- name: SW_LOGGING_LEVEL
  value: "WARN"
# 日志文件最大数量
- name: SW_LOGGING_MAX_HISTORY_FILES
  value: "10"

微服务启动的时候增加启动参数: -javaagent:/xxx/skywalking-agent/skywalking-agent.jar
skywalking-agent的其它参数由上面的环境变量进行设置

运行截图

在这里插入图片描述

参考资料

skywalking源码

配置文件参考: https://github.com/apache/skywalking/blob/master/oap-server/server-starter/src/main/resources/application.yml

Since SkyWalking 8.8.0, the Dockerfiles are merged into the OAP repo and the Java agent repo respectively, this repo is archived and not maintained anymore.