skywalking 安装和使用

背景信息

SkyWalking是一款针对分布式系统的国产APM（Application Performance Monitoring，应用性能监控）产品，主要针对微服务、Cloud Native和容器化（Docker、Kubernetes、Mesos）架构的应用。SkyWalking的核心是一个分布式追踪系统，目前已进入Apache 。

要通过SkyWalking将Java应用数据上报至链路追踪控制台，首先需要完成埋点工作。SkyWalking既支持自动探针（Dubbo、gRPC、JDBC、OkHttp、Spring、Tomcat、Struts、Jedis等），也支持手动埋点（OpenTracing）。本文介绍安装和自动动埋点方法。

安装 elasticsearch 7

下载

wget https://mirrors.tuna.tsinghua.edu.cn/elasticstack/7.x/yum/7.6.2/elasticsearch-7.6.2-x86_64.rpm

安装

yum install -y elasticsearch-7.6.2-x86_64.rpm

修改配置中目录的用户与用户组，不然无法启动

groupadd elasticsearch
useradd elasticsearch -g elasticsearch -p peter@2020

chown -R elasticsearch:elasticsearch /var/lib/elasticsearch
chown -R elasticsearch:elasticsearch /var/log/elasticsearch

chmod g+w /etc/elasticsearch

修改 elasticsearch 的配置

# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: skywalking-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: skywalking-node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /var/lib/elasticsearch
#
# Path to log files:
#
path.logs: /var/log/elasticsearch
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
discovery.seed_hosts: ["127.0.0.1"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
cluster.initial_master_nodes: ["skywalking-node-1"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true

启动 elasticsearch

sudo systemctl daemon-reload
sudo systemctl enable elasticsearch.service
sudo systemctl start elasticsearch.service

查看是否启动成功

  • 验证是否启动成功
curl http://localhost:9200/

成功会看到如下信息

{
  "name" : "skywalking-node-1",
  "cluster_name" : "skywalking-application",
  "cluster_uuid" : "6TSWaZJ-SaKhpQbUh4TMQw",
  "version" : {
    "number" : "7.0.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "b7e28a7",
    "build_date" : "2019-04-05T22:55:32.697037Z",
    "build_snapshot" : false,
    "lucene_version" : "8.0.0",
    "minimum_wire_compatibility_version" : "6.7.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}
  • 查看 启动失败的信息
systemctl status elasticsearch.service
journalctl -xe
  • 安装失败后，可以用下面命令进行卸载
yum remove elasticsearch-7.6.2-x86_64.rpm

skyWalking

下载

wget https://mirrors.tuna.tsinghua.edu.cn/apache/skywalking/7.0.0/apache-skywalking-apm-es7-7.0.0.tar.gz

解压

mkdir -p /opt/apache/skywalking
mv apache-skywalking-apm-es7-7.0.0.tar.gz /opt/apache/skywalking
cd /opt/apache/skywalking
tar -zxvf apache-skywalking-apm-es7-7.0.0.tar.gz

修改配置文件

vim /opt/apache/skywalking/apache-skywalking-apm-bin-es7/config/application.yml

只需关注如下内容，原配置文件的其他内容无需更改

... ##

storage:
  selector: elasticsearch7
  elasticsearch:
    nameSpace: ${SW_NAMESPACE:"skywalking-application"}
    clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:127.0.0.1:9200}
    protocol: ${SW_STORAGE_ES_HTTP_PROTOCOL:"http"}
    trustStorePath: ${SW_SW_STORAGE_ES_SSL_JKS_PATH:"../es_keystore.jks"}
    trustStorePass: ${SW_SW_STORAGE_ES_SSL_JKS_PASS:""}
    user: ${SW_ES_USER:""}
    password: ${SW_ES_PASSWORD:""}
    secretsManagementFile: ${SW_ES_SECRETS_MANAGEMENT_FILE:""} # Secrets management file in the properties format includes the username, password, which are managed by 3rd party tool.
    enablePackedDownsampling: ${SW_STORAGE_ENABLE_PACKED_DOWNSAMPLING:true} # Hour and Day metrics will be merged into minute index.
    dayStep: ${SW_STORAGE_DAY_STEP:1} # Represent the number of days in the one minute/hour/day index.
    indexShardsNumber: ${SW_STORAGE_ES_INDEX_SHARDS_NUMBER:2}
    indexReplicasNumber: ${SW_STORAGE_ES_INDEX_REPLICAS_NUMBER:0}
    # Those data TTL settings will override the same settings in core module.
    recordDataTTL: ${SW_STORAGE_ES_RECORD_DATA_TTL:7} # Unit is day
    otherMetricsDataTTL: ${SW_STORAGE_ES_OTHER_METRIC_DATA_TTL:45} # Unit is day
    monthMetricsDataTTL: ${SW_STORAGE_ES_MONTH_METRIC_DATA_TTL:18} # Unit is month
    # Batch process setting, refer to https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.5/java-docs-bulk-processor.html
    bulkActions: ${SW_STORAGE_ES_BULK_ACTIONS:1000} # Execute the bulk every 1000 requests
    flushInterval: ${SW_STORAGE_ES_FLUSH_INTERVAL:10} # flush the bulk every 10 seconds whatever the number of requests
    concurrentRequests: ${SW_STORAGE_ES_CONCURRENT_REQUESTS:2} # the number of concurrent requests
    resultWindowMaxSize: ${SW_STORAGE_ES_QUERY_MAX_WINDOW_SIZE:10000}
    metadataQueryMaxSize: ${SW_STORAGE_ES_QUERY_MAX_SIZE:5000}
    segmentQueryMaxSize: ${SW_STORAGE_ES_QUERY_SEGMENT_SIZE:200}
    profileTaskQueryMaxSize: ${SW_STORAGE_ES_QUERY_PROFILE_TASK_SIZE:200}
    advanced: ${SW_STORAGE_ES_ADVANCED:""}
  elasticsearch7:
    nameSpace: ${SW_NAMESPACE:"skywalking-application"}
    clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:127.0.0.1:9200}
    protocol: ${SW_STORAGE_ES_HTTP_PROTOCOL:"http"}
    trustStorePath: ${SW_SW_STORAGE_ES_SSL_JKS_PATH:"../es_keystore.jks"}
    trustStorePass: ${SW_SW_STORAGE_ES_SSL_JKS_PASS:""}
    enablePackedDownsampling: ${SW_STORAGE_ENABLE_PACKED_DOWNSAMPLING:true} # Hour and Day metrics will be merged into minute index.
    dayStep: ${SW_STORAGE_DAY_STEP:1} # Represent the number of days in the one minute/hour/day index.
    user: ${SW_ES_USER:""}
    password: ${SW_ES_PASSWORD:""}
    secretsManagementFile: ${SW_ES_SECRETS_MANAGEMENT_FILE:""} # Secrets management file in the properties format includes the username, password, which are managed by 3rd party tool.
    indexShardsNumber: ${SW_STORAGE_ES_INDEX_SHARDS_NUMBER:2}
    indexReplicasNumber: ${SW_STORAGE_ES_INDEX_REPLICAS_NUMBER:0}
    # Those data TTL settings will override the same settings in core module.
    recordDataTTL: ${SW_STORAGE_ES_RECORD_DATA_TTL:7} # Unit is day
    otherMetricsDataTTL: ${SW_STORAGE_ES_OTHER_METRIC_DATA_TTL:45} # Unit is day
    monthMetricsDataTTL: ${SW_STORAGE_ES_MONTH_METRIC_DATA_TTL:18} # Unit is month
    # Batch process setting, refer to https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.5/java-docs-bulk-processor.html
    bulkActions: ${SW_STORAGE_ES_BULK_ACTIONS:1000} # Execute the bulk every 1000 requests
    flushInterval: ${SW_STORAGE_ES_FLUSH_INTERVAL:10} # flush the bulk every 10 seconds whatever the number of requests
    concurrentRequests: ${SW_STORAGE_ES_CONCURRENT_REQUESTS:2} # the number of concurrent requests
    resultWindowMaxSize: ${SW_STORAGE_ES_QUERY_MAX_WINDOW_SIZE:10000}
    metadataQueryMaxSize: ${SW_STORAGE_ES_QUERY_MAX_SIZE:5000}
    segmentQueryMaxSize: ${SW_STORAGE_ES_QUERY_SEGMENT_SIZE:200}
    profileTaskQueryMaxSize: ${SW_STORAGE_ES_QUERY_PROFILE_TASK_SIZE:200}
    advanced: ${SW_STORAGE_ES_ADVANCED:""}
  mysql:
    properties:
      jdbcUrl: ${SW_JDBC_URL:"jdbc:mysql://localhost:3306/swtest"}
      dataSource.user: ${SW_DATA_SOURCE_USER:root}
      dataSource.password: ${SW_DATA_SOURCE_PASSWORD:root@1234}
      dataSource.cachePrepStmts: ${SW_DATA_SOURCE_CACHE_PREP_STMTS:true}
      dataSource.prepStmtCacheSize: ${SW_DATA_SOURCE_PREP_STMT_CACHE_SQL_SIZE:250}
      dataSource.prepStmtCacheSqlLimit: ${SW_DATA_SOURCE_PREP_STMT_CACHE_SQL_LIMIT:2048}
      dataSource.useServerPrepStmts: ${SW_DATA_SOURCE_USE_SERVER_PREP_STMTS:true}
    metadataQueryMaxSize: ${SW_STORAGE_MYSQL_QUERY_MAX_SIZE:5000}
  influxdb:
    # Metadata storage provider configuration
    metabaseType: ${SW_STORAGE_METABASE_TYPE:H2} # There are 2 options as Metabase provider, H2 or MySQL.
    h2Props:
      dataSourceClassName: ${SW_STORAGE_METABASE_DRIVER:org.h2.jdbcx.JdbcDataSource}
      dataSource.url: ${SW_STORAGE_METABASE_URL:jdbc:h2:mem:skywalking-oap-db}
      dataSource.user: ${SW_STORAGE_METABASE_USER:sa}
      dataSource.password: ${SW_STORAGE_METABASE_PASSWORD:}
    mysqlProps:
      jdbcUrl: ${SW_STORAGE_METABASE_URL:"jdbc:mysql://localhost:3306/swtest"}
      dataSource.user: ${SW_STORAGE_METABASE_USER:root}
      dataSource.password: ${SW_STORAGE_METABASE_PASSWORD:root@1234}
      dataSource.cachePrepStmts: ${SW_STORAGE_METABASE_CACHE_PREP_STMTS:true}
      dataSource.prepStmtCacheSize: ${SW_STORAGE_METABASE_PREP_STMT_CACHE_SQL_SIZE:250}
      dataSource.prepStmtCacheSqlLimit: ${SW_STORAGE_METABASE_PREP_STMT_CACHE_SQL_LIMIT:2048}
      dataSource.useServerPrepStmts: ${SW_STORAGE_METABASE_USE_SERVER_PREP_STMTS:true}
    metadataQueryMaxSize: ${SW_STORAGE_METABASE_QUERY_MAX_SIZE:5000}
    # InfluxDB configuration
    url: ${SW_STORAGE_INFLUXDB_URL:http://localhost:8086}
    user: ${SW_STORAGE_INFLUXDB_USER:root}
    password: ${SW_STORAGE_INFLUXDB_PASSWORD:}
    database: ${SW_STORAGE_INFLUXDB_DATABASE:skywalking}
    actions: ${SW_STORAGE_INFLUXDB_ACTIONS:1000} # the number of actions to collect
    duration: ${SW_STORAGE_INFLUXDB_DURATION:1000} # the time to wait at most (milliseconds)
    fetchTaskLogMaxSize: ${SW_STORAGE_INFLUXDB_FETCH_TASK_LOG_MAX_SIZE:5000} # the max number of fetch task log in a request

...

修改的内容为

storage:
  selector: elasticsearch7


elasticsearch7:
    nameSpace: ${SW_NAMESPACE:"skywalking-application"}
    clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:127.0.0.1:9200}

启动 skywalking

  • 启动 skywalking 后台服务
/opt/apache/skywalking/apache-skywalking-apm-bin-es7$ sh bin/oapService.sh
  • 启动 UI
/opt/apache/skywalking/apache-skywalking-apm-bin-es7$ sh bin/webappService.sh

注意
虽然启动后，会返回SkyWalking OAP started successfully!但是并不表示真的启动成功了。
看到 SkyWalking Web Application started successfully! 也不表示正在的成功；

在日志中

/opt/apache/skywalking/apache-skywalking-apm-bin-es7$ tail -f logs/skywalking-oap-server.log

看到Started @66759ms表示启动成功

浏览器访问

http://127.0.0.1:8080/

SkyWalking上报Java应用数据

请将以下示例代码中的<skywalking-agent-path>替换为Agent文件夹中的skywalking-agent.jar的绝对路径。

JAR File或Spring Boot

在应用程序的启动命令行中添加-Dskywalking.agent.service_name参数。

java -javaagent:<skywalking-agent-path> -Dskywalking.agent.service_name=<ServiceName> -Dskywalking.collector.backend_service=127.0.0.1:11800 -jar yourApp.jar

Jetty

在{JETTY_HOME}/start.ini配置文件中添加以下内容：

--exec    # 去掉前面的井号取消注释。
-javaagent:<skywalking-agent-path>

Tomcat

linux下 在 tomcat/bin/catalina.sh 第一行添加以下内容：

CATALINA_OPTS="$CATALINA_OPTS -javaagent:<skywalking-agent-path>"; export CATALINA_OPTS

Windows下在 tomcat/bin/catalina.bat 第一行添加以下内容：

set "CATALINA_OPTS=-javaagent:<skywalking-agent-path>"

idea 下

-Dskywalking.agent.service_name=skywalking-fiarap -Dskywalking.collector.backend_service=127.0.0.1:11800 -javaagent://opt/apache/skywalking/apache-skywalking-apm-bin-es7/agent/skywalking-agent.jar
1591927384426-207d8c15-458b-4a47-9f15-231edc5c57cc.png
1591927404980-762a1bc2-81d6-4df3-bcdb-f5527c38354b.png

skywalking 支持的中间件

1591927791680-ac048a0d-5b4b-4708-a22b-5eb4f951b603.png
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