Catalog
  1. To configure java agent
  2. Start the application
    1. java -jar Launched applications
    2. Tradition Tomcat application
      1. Linux Tomcat 7-9
      2. Windows Tomcat 7-9
  3. Effect demonstration

TIPS

This article is based on Skywalking 6.6.0 To write , theoretical support Skywalking 6.0+ All versions .

This article discusses how to use Skywalking Monitoring applications .

Skywalking There are many ways of using , Most popular at present ( And the most powerful ) Is based on Java agent Of .

Java agent Supported framework 、 Middleware etc. , Can be found in https://github.com/apache/skywalking/blob/v6.6.0/docs/en/setup/service-agent/java-agent/Supported-list.md see .

TIPS

  • except Java agent Out of the way ,Skywalking It also supports other languages agent, See https://github.com/apache/skywalking/blob/v6.6.0/docs/en/setup/README.md#language-agents-in-service
  • Besides ,Skywalking It also supports Service Mesh（ for example Istio, See https://github.com/apache/skywalking/blob/v6.6.0/docs/en/setup/README.md#service-mesh ）、Proxy（ for example Envoy Proxy, See https://github.com/apache/skywalking/blob/v6.6.0/docs/en/setup/README.md#service-mesh ） , But these two ways of using are not very popular at present , So I don't want to repeat it , In fact, it is also relatively simple . Interested children's shoes can also be studied .

To configure java agent

  • find SkyWalking In bag agent Catalog ,agent The directory structure is as follows 

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    +-- agent
        +-- activations
             apm-toolkit-log4j-1.x-activation.jar
             apm-toolkit-log4j-2.x-activation.jar
             apm-toolkit-logback-1.x-activation.jar
             ...
        +-- config
             agent.config  
        +-- plugins
             apm-dubbo-plugin.jar
             apm-feign-default-http-9.x.jar
             apm-httpClient-4.x-plugin.jar
             .....
        skywalking-agent.jar

  • take agent Copy directory to any location

  • To configure config/agent.config ：
    • take agent.service_name Change it to your microservice name ;
    • If Skywalking And microservices are deployed on different servers , It needs to be modified collector.backend_service Value , This configuration is used to specify microservices and Skywalking Address of correspondence , The default is 127.0.0.1:11800 , Modify as needed . Of course agent.config There's a lot of configuration in the file , The table below explains in detail .

Start the application

java -jar Launched applications

for example , There is one Spring Boot application , Then we have finished modifying agent After the directory ：

  • Execute the following command to start ：

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    #  Be careful -javaagent You have to -jar Before, oh 
    java -javaagent:/opt/agent/skywalking-agent.jar -jar somr-spring-boot.jar

  • If you want to IDE Start the test in , Please refer to the following figure for configuration , Then start .

Tradition Tomcat application

Linux Tomcat 7-9

modify tomcat/bin/catalina.sh The first line of ：

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CATALINA_OPTS="$CATALINA_OPTS -javaagent:/opt/agent/skywalking-agent.jar"; export CATALINA_OPTS

Windows Tomcat 7-9

modify tomcat/bin/catalina.bat The first line of ：

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set "CATALINA_OPTS=-javaagent:/opt/agent/skywalking-agent.jar"

Effect demonstration

Use Skywalking After monitoring the application , When an application API When interviewed , It will show a chart like this .

home page ：

image-20191219003122935

Network topology ： Can analyze the network destination of the request . Such as below , The request was called first foodie-dev This micro service , And then asked for localhost:3306 This MySQL database .

image-20191219003107863

track ： This navigation bar is the most common one we use to locate problems , You can search for specific details of the query . Locate where the performance bottleneck lies .

image-20191219003143025

The alarm ： seeing the name of a thing one thinks of its function .Skywalking Configurable alarm rules , When the configured threshold is exceeded , Push the alarm information .

Index comparison ： Any indicator can be compared .

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