skywalking部署安装

说明：
springboot项目加入skywalking，达到链路日志监控的目的.

1. 需要部署一个Skywalking OAP后端服务和SkyWalking UI前端服务; OAP服务数据存储采用H2（默认），不选es
2. springBoot应用需要指定SkyWailking Agent
   

部署方式

一、普通部署

参考：https://www.iocoder.cn/SkyWalking/install/?skywalkinng

https://blog.csdn.net/AliEnCheng/article/details/126529335

1.1 下载安装包

官网安装包下载地址：https://skywalking.apache.org/downloads/#KubernetesHelm

apm包

https://dlcdn.apache.org/skywalking/9.3.0/apache-skywalking-apm-9.3.0.tar.gz

agent 包

https://dlcdn.apache.org/skywalking/java-agent/8.14.0/apache-skywalking-java-agent-8.14.0.tgz

1.2 解压

在服务器/usr/local目录新建skywalking文件夹，将apm压缩包传输到该文件夹，并解压:
tar -zxcf apache-skywalking-java-agent-8.14.0.tgz

解压后文件夹:

-bash-4.2$ ll apache-skywalking-apm-bin/
total 108
drwxrwxr-x  2 paasops paasops   241 Mar  8 10:15 bin  --> 存放服务的启动脚本
drwxrwxr-x 12 paasops paasops  4096 Mar 10 15:00 config  --> 存放配置文件
drwxrwxr-x  2 paasops paasops    68 Mar  8 10:15 config-examples
-rw-r--r--  1 paasops paasops 43740 Feb 18  2022 LICENSE
drwxr-xr-x  3 paasops paasops  4096 Mar  8 10:15 licenses
-rw-r--r--  1 paasops paasops  1393 Feb 18  2022 LICENSE.tpl
drwxrwxr-x  2 paasops paasops   109 Mar  8 10:34 logs
-rw-r--r--  1 paasops paasops 30503 Feb 18  2022 NOTICE
drwxr-xr-x  2 paasops paasops 12288 Feb 18  2022 oap-libs
-rw-r--r--  1 paasops paasops  1947 Feb 18  2022 README.txt
drwxrwxr-x  4 paasops paasops    52 Mar  8 10:15 tools
drwxrwxr-x  2 paasops paasops    76 Mar 10 16:48 webapp  --> 与skywalking UI有关

在apache-skywalking-apm-bin文件夹新建一个agent文件夹,将agent压缩包放到此处并解压:
tar -zxcf apache-skywalking-java-agent-8.14.0.tgz

解压后的文件夹

-bash-4.2$ ll skywalking-agent/
total 21348
drwxrwxr-x 2 paasops paasops     4096 Jan 12 11:38 activations
drwxrwxr-x 2 paasops paasops      131 Jan 12 11:39 bootstrap-plugins
drwxrwxr-x 2 paasops paasops       26 Mar  8 11:48 config
-rw-rw-r-- 1 paasops paasops    12911 Jan 12 11:36 LICENSE
drwxrwxr-x 2 paasops paasops       29 Jan 12 11:36 licenses
drwxrwxr-x 2 paasops paasops       32 Mar  8 12:37 logs
-rw-rw-r-- 1 paasops paasops    10003 Jan 12 11:36 NOTICE
drwxrwxr-x 2 paasops paasops     4096 Jan 12 11:39 optional-plugins
drwxrwxr-x 2 paasops paasops      131 Jan 12 11:39 optional-reporter-plugins
drwxrwxr-x 2 paasops paasops     8192 Jan 12 11:38 plugins
-rw-rw-r-- 1 paasops paasops 21808716 Jan 12 11:36 skywalking-agent.jar  --> 待使用的jar包

1.3 修改配置并启动

1.3.1 skywalking OAP配置信息

skywalking/apache-skywalking-apm-bin/config文件夹下的application.yml文件:

默认存储使用h2，不做修改

启动oap, 进入skywalking/apache-skywalking-apm-bin/bin,执行脚本：./oapService.sh

可在skywalking/apache-skywalking-apm-bin/logs文件夹查看日志：

注意:
SkyWalking-oap-server服务启动后会暴露11800和12800两个端口，分别为收集监控数据的端口11800和接收前端请求的端口12800

1.3.1 skywalking UI配置信息

/usr/local/skywalking/apache-skywalking-apm-bin/webapp/application.yaml配置文件：

启动UI:进入/usr/local/skywalking/apache-skywalking-apm-bin/bin目录执行启动脚本:./webappService.sh

1.3.3 后端jar包指定agent

启动命令添加参数:
-javaagent:/usr/local/skywalking/apache-skywalking-apm-bin/agent/skywalking-agent/skywalking-agent.jar    --> agent包的位置
-DSW_AGENT_NAME=secondalert-test   --> 应用名
-DSW_AGENT_COLLECTOR_BACKEND_SERVICES=127.0.0.1:11800  --> 收集数据的地址

example:
java -javaagent:/usr/local/skywalking/apache-skywalking-apm-bin/agent/skywalking-agent/skywalking-agent.jar -DSW_AGENT_NAME=secondalert-test -DSW_AGENT_COLLECTOR_BACKEND_SERVICES=127.0.0.1:11800  -Dspring.profiles.active=test -Dlogging.file.path=/data/paasops/logs/paas/paas-service-secondalert -jar /data/paasops/paas/service-secondAlert/paas-ops-secondalert-0.0.1.jar 

1.4 验证

访问UI地址：服务器ip:端口（xxx.xxx.xxx.162:8080）
看到对应的服务名表示成功：

二、docker部署

2.1 普通的docker部署

参考:
https://cloud.tencent.com/developer/article/1695427
官方文档:
https://skywalking.apache.org/docs/main/v9.3.0/en/setup/backend/backend-docker/

2.1.1. 下载镜像

docker pull apache/skywalking-oap-server:9.0.0 -> oap镜像
docker pull apache/skywalking-ui:9.0.0 -> UI镜像

2.1.2. 启动容器

docker run --name oap --restart always -d apache/skywalking-oap-server:9.0.0–> 启动oap

docker run -d --name skywalking-ui -e TZ=Asia/Shanghai -p 8088:8080 --link oap:oap -e SW_OAP_ADDRESS=http://oap:12800 apache/skywalking-ui:9.0.0 --> 启动UI

2.1.3 查看容器日志

docker logs 容器id

注意:

因为UI需要访问oap的相应端口，需要设置变量SW_OAP_ADDRESS
那么两个容器之间该如何访问？
1. 可以采用 --link 参数，然后直接使用容器名访问
2. 也可以直接通过ip地址访问,：
   如果两个容器在同一台服务器上运行（ip为:121.1xx.12x.162）,那么SW_OAP_ADDRESS=http://121.1xx.12x.162:12800

ip地址需要加上http:// , 否则会不成功

常见错误:
启动UI失败，查看容器日志，docker logs 容器id：

Exception in thread "main" java.lang.NullPointerException: authority
        at java.base/java.util.Objects.requireNonNull(Unknown Source)
        at com.linecorp.armeria.client.Endpoint.parse(Endpoint.java:96)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
        at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
        at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
        at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
        at org.apache.skywalking.oap.server.webapp.OapProxyService.(OapProxyService.java:50)

此问题是由于SW_OAP_ADDRESS变量错误引起的，检查后端收集地址和端口是否正确，并在前面加上http://

2.2 docker-compose方式部署

官方文档:
https://docs.docker.com/compose/compose-file/
使用参考文章:
https://blog.csdn.net/pushiqiang/article/details/78682323

2.2.1 docker-compose文件

事先准备好两个镜像，oap和ui。参考 本文目录 2.1.1。
新建一个docker-compose.yml文件:

version: '3' # 根据dokcer-compose版本确定
services:
  sw-oap:
    container_name: sw-oap-container
    image: df2ce85c228d
    expose: # 暴露端口，但不映射到宿主机，只被连接的服务访问
      - "11800"
      - "12800"
    ports: # 映射到主机11801端口
      - "11801:11800"
  sw-ui:
    container_name: sw-ui-container
    depends_on: # 依赖sw-oap服务，让sw-aop服务先启动完成再启本服务
      - sw-oap
    image: 8ed36461dc01
    ports:
      - "8089:8080"    
    links:  # 连接sw-oap服务，实现容器之间直接通过服务名访问
      - sw-oap
    environment: # 环境变量
      SW_OAP_ADDRESS: http://sw-oap:12800

启动命令：docker-compose up -d
之后便可以使用docker方式查看容器的启动情况

三、k8s部署

参考：
https://www.jianshu.com/p/4f4c182bcbd8

将三个服务放到一个pod中：

3.1 资源配置文件

3.1.1 deployment

新建一个deployment.yml文件：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: oap-deployment     --> deployment名字
  namespace: kube-tracing  -->命名空间
  labels:
    app: oap-tag  --> 标签
spec:
  selector:
    matchLabels:
      app: oap-tag
  template:
    metadata:
      labels:
        app: oap-tag
        release: skywalking
    spec:
      containers:
      - name: oap
        image: 192.168.116.126:18080/skywalking/skywalking-oap-server:latest  -->镜像位置
        imagePullPolicy: Always
        ports:
        - containerPort: 11800
          name: grpc
        - containerPort: 12800
          name: rest
        resources:
          requests:
            memory: 2Gi
          limits:
            memory: 2Gi
        env:
        - name: JAVA_OPTS
          value: "-Xmx1g -Xms1g"
      - name: demo
        image: 192.168.116.126:18080/skywalking/demo:latest
        imagePullPolicy: Always
        ports:
        - containerPort: 8079
        env:
        - name: SW_AGENT_COLLECTOR_BACKEND_SERVICES
          value: 127.0.0.1:11800
        - name: SW_AGENT_NAME
          value: test-demo-2
      - name: sk-ui
        image: 192.168.116.126:18080/skywalking/skywalking-ui:6.6.0
        imagePullPolicy: Always
        ports:
        - containerPort: 8080
        env:
        - name: SW_OAP_ADDRESS
          value: 127.0.0.1:12800

启动:
kubectl apply -f deployment.yml
查看:
kubectl get deployment -n kube-tracing
kubectl get pod -n kube-tracing

3.1.2.service

新建一个oap-service.yml文件

apiVersion: v1
kind: Service
metadata:
  name: oap-service
  namespace: kube-tracing
spec:
  type: NodePort
  selector:
    app: oap-tag
  ports:
    - name: rest
      port: 8080
      nodePort: 30081
    - name: back
      port: 8079
      nodePort: 30079

启动:
kubectl apply -f oap-service.yml