官网

## 官网地址：
skywalking.apache.org/## 中文文档地址：
https://skyapm.github.io/document-cn-translation-of-skywalking/## 下载地址
https://skywalking.apache.org/downloads/

参考

##
https://blog.csdn.net/qq_45518774/article/details/128798893##
https://zhuanlan.zhihu.com/p/346605953

安装

ES作为后端存储

## 官网下载
wget https://dlcdn.apache.org/skywalking/9.3.0/apache-skywalking-apm-9.3.0.tar.gz
wget https://dlcdn.apache.org/skywalking/java-agent/8.14.0/apache-skywalking-java-agent-8.14.0.tgz## 后端存储选择ES
elasticsearch-7.17.9-linux-x86_64.tar.gz

前置操作

vi /etc/security/limits.conf

* soft nofile 640000
* hard nofile 640000
* soft nproc 640000
* hard nproc 640000

vi /etc/sysctl.conf 

vm.max_map_count=655360

配置

 vim /opt/app/skywalking/config/application.yml 

node.master: true
node.data: truenode.name: node-01
path.data: /opt/data/es/data
path.logs: /opt/data/es/logs
network.host: 0.0.0.0
http.port: 9200## 支持跨域访问
http.cors.enabled: true

启动：

#以es用户启动
groupadd es
useradd es -g es -p es##
chown -R es:es /opt/data/es/

开启启动

cat /etc/systemd/system/elastic.service

[Unit]
Description=elasticsearch[Service]
Type=forkingUser=es 
LimitNOFILE=65536
LimitNPROC=65536
ExecStart=/opt/app/elastic/bin/elasticsearch -d[Install]
WantebBy=multi-user.target

编辑Skywalking配置文件

vi /opt/app/skywalking/config/application.yml

storage:#selector: ${SW_STORAGE:h2}selector: ${SW_STORAGE:elasticsearch}elasticsearch:namespace: ${SW_NAMESPACE:"apm-es"}  # 表示es的索引clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:10.1.1.32:9200}protocol: ${SW_STORAGE_ES_HTTP_PROTOCOL:"http"}connectTimeout: ${SW_STORAGE_ES_CONNECT_TIMEOUT:3000}socketTimeout: ${SW_STORAGE_ES_SOCKET_TIMEOUT:30000}responseTimeout: ${SW_STORAGE_ES_RESPONSE_TIMEOUT:15000}numHttpClientThread: ${SW_STORAGE_ES_NUM_HTTP_CLIENT_THREAD:0}user: ${SW_ES_USER:""}password: ${SW_ES_PASSWORD:""}

启动

# 
../bin/startup.sh

Mysql作为后端存储

vi /opt/app/skywalking/config/application.yml

storage:#selector: ${SW_STORAGE:h2}selector: ${SW_STORAGE:mysql}
..............................mysql:properties:jdbcUrl: ${SW_JDBC_URL:"jdbc:mysql://localhost:3306/db_apm?rewriteBatchedStatements=true"}dataSource.user: ${SW_DATA_SOURCE_USER:root}dataSource.password: ${SW_DATA_SOURCE_PASSWORD:root@1234}

依赖包

官方是没有mysql的包的。去下载：

###
create database db_apm;## 依赖驱动包下载地址
https://mvnrepository.com/artifact/mysql/mysql-connector-java/8.0.28## 
mysql-connector-java-8.0.28.jar## jar放到以下目录
/opt/app/skywalking/oap-libs/

客户端接入

Java-agent

vim /media/agent/skywalking-agent/config/agent.config 

##
collector.backend_service=${SW_AGENT_COLLECTOR_BACKEND_SERVICES:10.1.1.32:11800}

加载agent

##
tar -xzvf apache-skywalking-apm-9.3.0.tar.gz  
tar -zxvf apache-skywalking-java-agent-8.15.0.tgz# 每个项目需要拷贝一份skywalking-agent.jar
java -jar -javaagent:/media/agent/skywalking-agent/skywalking-agent.jar -Dskywalking.agent.service_name=demo /opt/app/java-demo/demo.jar#或者
java -jar -javaagent:/media/agent/skywalking-agent/skywalking-agent.jar -DSW_AGENT_NAME=ke-demo-test /opt/app/java-demo/demo.jar## 或者
# java -javaagent:/skywalking-agent/skywalking-agent.jar \
-DSW_AGENT_NAMESPACE=xyz \
-DSW_AGENT_NAME=abc-application \
-Dskywalking.collector.backend_service=skywalking.abc.xyz.com:11800 \
-jar abc-xyz-1.0-SNAPSHOT.jar