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      CentOS 6搭建SkyWalking 做分布式跟蹤

      Apache Skywalking(Incubator)簡介

      當(dāng)企業(yè)應(yīng)用進(jìn)入分布式微服務(wù)時(shí)代,應(yīng)用服務(wù)依賴會越來越多,skywalking可以很好的解決服務(wù)調(diào)用鏈路追蹤的問題,而且基于Java探針技術(shù),基本對應(yīng)用零侵入零耦合。

      Apache Skywalking(Incubator) 專門為微服務(wù)架構(gòu)和云原生架構(gòu)系統(tǒng)而設(shè)計(jì)并且支持分布式鏈路追蹤的APM系統(tǒng),即應(yīng)用性能監(jiān)控系統(tǒng),為微服務(wù)架構(gòu)和云原生架構(gòu)系統(tǒng)設(shè)計(jì)。它通過探針自動收集所需的指標(biāo),并進(jìn)行分布式追蹤。通過這些調(diào)用鏈路以及指標(biāo),Skywalking APM會感知應(yīng)用間關(guān)系和服務(wù)間關(guān)系,并進(jìn)行相應(yīng)的指標(biāo)統(tǒng)計(jì)。目前支持鏈路追蹤和監(jiān)控應(yīng)用組件如下,基本涵蓋主流框架和容器,如國產(chǎn)PRC Dubbo和motan等,國際化的spring boot,spring cloud都支持了。Apache Skywalking (Incubating)目前支持多種語言,其中包括Java,.Net Core,Node.js和Go語言。

      skywalaking總體架構(gòu)分為三部分

      • skywalking-collector:鏈路數(shù)據(jù)歸集器,數(shù)據(jù)可以落地ElasticSearch,單機(jī)也可以落地H2,不推薦,H2僅作為臨時(shí)演示用
      • skywalking-web:web可視化平臺,用來展示落地的數(shù)據(jù)
      • skywalking-agent:探針,用來收集和發(fā)送數(shù)據(jù)到歸集器

      CentOS 6搭建SkyWalking 做分布式跟蹤

      Apache Skywalking(Incubator)共提供兩種部署模式:單節(jié)點(diǎn)模式和集群模式,以下為單節(jié)點(diǎn)模式部署步驟。

      依賴第三方組件

      • JDK8+
      • Mysql5.6 (不推薦)
      • ElasticSearch: 6.x

      環(huán)境配置

      • skywalking-collector服務(wù):192.168.1.100
      • skywalking-web服務(wù):192.168.1.101
      • ES集群:192.168.1.102

      安裝ES集群(推薦)

      安裝詳情,見 http://www.sfodin.cn/Linux/2019-08/159732.htm

      安裝MySQL數(shù)據(jù)庫(不推薦)

      wget http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm  sudo yum -y localinstall mysql-community-release-el6-*.noarch.rpm   yum install mysql-server mysql-client libmysqlclient-dev    /etc/init.d/mysqld start  mysql_secure_installation    #MySQL安全配置向?qū)?   Enter current password for root (enter for none):  <–初次運(yùn)行直接回車    Set root password? [Y/n]   <– 是否設(shè)置root用戶密碼,輸入y并回車或直接回車    Remove anonymous users? [Y/n]   <– 是否刪除匿名用戶,生產(chǎn)環(huán)境建議刪除,所以直接回車    Disallow root login remotely? [Y/n]  <–是否禁止root遠(yuǎn)程登錄,根據(jù)自己的需求選擇Y/n并回車,建議禁止    Remove test database and access to it? [Y/n]   <– 是否刪除test數(shù)據(jù)庫,直接回車    Reload privilege tables now? [Y/n]   <– 是否重新加載權(quán)限表,直接回車

      //修改配置文件

      cat /etc/my.cnf  ---------------------------------------------------------------------------------  [mysqld]  port=3319  datadir=/var/lib/mysql  socket=/var/lib/mysql/mysql.sock  pid-file=/var/run/mysqld/mysqld.pid    innodb_large_prefix=on  innodb_file_format=Barracuda    # time zone  default-time-zone=system  character-set-server=utf8  default-storage-engine=InnoDB    skip-name-resolve  skip-symbolic-links  skip-external-locking  skip-slave-start    # res settings  back_log=128  max_connections=100  max_connect_errors=2000  #open_files_limit=10240    connect-timeout=10  wait-timeout=28800  interactive-timeout=28800  innodb_thread_concurrency=0 #不限制并發(fā)    # slow query log  slow_query_log=1  long-query-time=3 #慢查詢時(shí)間  slow_query_log_file=/data/logs/mysql/slow.log    log-warnings=1  log-error=/data/logs/mysql/mysql.err  log_output=FILE    general_log=1  general_log_file=/data/logs/mysql/mysql.log  max_binlog_size=1G  max_relay_log_size=1G    innodb_additional_mem_pool_size=16M  innodb_buffer_pool_instance=2  innodb_buffer_pool_size=256M  innodb_file_io_threads=4  innodb_flush_log_at_trx_commit=2  innodb_log_buffer_size=5M  innodb_log_file_size=100M    innodb_log_files_in_group=2  innodb_log_group_home_dir=/data/mysql/var/  innodb_old_blocks_pct=20  innodb_buffer_pool_dump_at_shutdown=1  innodb_buffer_pool_dump_now=1  innodb_buffer_pool_load_at_startup=1  innodb_buffer_pool_load_now=1  innodb_buffer_pool_filename=ib_buffer_pool    innodb_max_dirty_pages_pct=90  innodb_lock_wait_timeout=50    symbolic-links=0  sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES    [mysqld_safe]  log-error=/var/log/mysqld.log  pid-file=/var/run/mysqld/mysqld.pid    [mysql]  disable-auto-rehash  default-character-set=utf8  connect-timeout=3

      //創(chuàng)建配置目錄

      mkdir -p /data/logs/mysql  mkdir -p /data/mysql/var  chown -R mysql:mysql /data/mysql/var  chown -R mysql:mysql /data/logs/mysql

      //重啟mysql

      /etc/init.d/mysqld restart

      配置 Skywalking Collector服務(wù)

      cd /data/packages/  wget http://mirrors.hust.edu.cn/apache/incubator/skywalking/6.0.0-GA/apache-skywalking-apm-incubating-6.0.0-GA.tar.gz  tar zxvf apache-skywalking-apm-incubating-6.0.0-GA.tar.gz  mv apache-skywalking-apm-incubating /opt/skywalking  ll /opt/skywalking

      CentOS 6搭建SkyWalking 做分布式跟蹤

      配置ES 存儲監(jiān)控?cái)?shù)據(jù)(推薦)
      將儲存方式由 h2 修改為 elasticsearch:

      storage:  # h2:  #   driver: org.h2.jdbcx.JdbcDataSource  #   url: jdbc:h2:mem:skywalking-oap-db  #   user: sa    elasticsearch:      clusterName: elk-cluster      clusterNodes: 192.168.1.102:9200      indexShardsNumber: 2      indexReplicasNumber: 0      # Batch process setting, refer to https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.5/java-docs-bulk-processor.html      bulkActions: 2000 # Execute the bulk every 2000 requests      bulkSize: 20 # flush the bulk every 20mb      flushInterval: 10 # flush the bulk every 10 seconds whatever the number of requests      concurrentRequests: 2 # the number of concurrent requests

      其中主要修改 clusterName 和 clusterNodes 和 已啟動的 elasticsearch 配置一致。

      配置Mysql 存儲監(jiān)控?cái)?shù)據(jù)(不推薦)
      1、將儲存方式由 h2 修改為 mysql:

      cd /opt/skywalking  #修改 config/application.yml (# 修改storage部分,注釋掉h2,打開mysql,其他保持不動):    core:    default:      restHost: 127.0.0.1      restPort: 12800      restContextPath: /      gRPCHost: 127.0.0.1      gRPCPort: 11800  storage:  #  h2:  #    driver: ${SW_STORAGE_H2_DRIVER:org.h2.jdbcx.JdbcDataSource}  #    url: ${SW_STORAGE_H2_URL:jdbc:h2:mem:skywalking-oap-db}  #    user: ${SW_STORAGE_H2_USER:sa}  ....................此處省略N行..........................................  # 設(shè)置mysql 存儲監(jiān)控?cái)?shù)據(jù)    mysql:         #取消此行注釋
      #配置datasource, 修改 config/datasource-settings.properties 配置如下:    jdbcUrl=jdbc:mysql://localhost:3319/swtest  dataSource.user=root  dataSource.password=<your_pass>  dataSource.cachePrepStmts=true  dataSource.prepStmtCacheSize=250  dataSource.prepStmtCacheSqlLimit=2048  dataSource.useServerPrepStmts=true  dataSource.useLocalSessionState=true  dataSource.rewriteBatchedStatements=true  dataSource.cacheResultSetMetadata=true  dataSource.cacheServerConfiguration=true  dataSource.elideSetAutoCommits=true  dataSource.maintainTimeStats=false

      2、下載mysql驅(qū)動包到 oap-libs 目錄下
      下載地址:http://central.maven.org/maven2/mysql/mysql-connector-java/

      cd /opt/skywalking/oap-libs/  wget http://central.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar

      3、進(jìn)入mysql 創(chuàng)建swtest 數(shù)據(jù)庫

      [root@skywalking ]# mysql -uroot -p<your_pass>  mysql> CREATE DATABASE swtest;  Query OK, 1 row affected (0.00 sec)

      啟動collector服務(wù)

      #初始化  cd /opt/skywalking/bin/  ./oapServiceInit.sh    #啟動collector服務(wù)  ./oapService.sh

      配置 Skywalking Web服務(wù)
      1、修改配置

      cd /opt/skywalking/webapp  # 修改webapp.yml 文件配置如下:  server:    port: 8080  collector:    path: /graphql    ribbon:      ReadTimeout: 10000      # Point to all backend's restHost:restPort, split by ,      listOfServers: 127.0.0.1:12800  security:    user:      # username      admin:        # password        password:  <your_pass>    #此處修改你的網(wǎng)站管理員密碼

      2、啟動web服務(wù)

      cd /opt/skywalking/bin  ./webappService.sh

      啟動bin目錄下的startup.sh可以將collector和Web模塊一起啟動起來。

      如果一切順利,這時(shí)候就可以通過 http://192.168.1.100:8080 來查看 SkyWalking UI 了,默認(rèn)賬號/密碼:admin/admin。

      探針配置(agent)

      1、被監(jiān)控端下載skywalking

      wget http://mirrors.hust.edu.cn/apache/incubator/skywalking/6.0.0-GA/apache-skywalking-apm-incubating-6.0.0-GA.tar.gz  tar zxvf apache-skywalking-apm-incubating-6.0.0-GA.tar.gz  mv apache-skywalking-apm-incubating /opt/skywalking

      2、探針的配置 修改agent.config配置如下:

      vim /opt/skywalking/agent/config/agent.config  -------------------------------------------------------------  agent.service_name=Your_ApplicationName  #改為你的項(xiàng)目名字  collector.backend_service=192.168.1.100:11800   #collector的端口服務(wù)地址;  logging.level=info

      3、啟動Agent

      • 基于Tomcat的服務(wù)(SpringMvc)
        在tomcat的bin目錄下的catalina.sh中增加如下命令行

        CATALINA_OPTS="$CATALINA_OPTS -javaagent:/opt/skywalking/agent/skywalking-agent.jar"  export CATALINA_OPTS
      • 基于JAR file的服務(wù)(SpringBoot)
        在啟動你的應(yīng)用程序的命令行中添加 -javaagent 參數(shù). 并確保在-jar參數(shù)之前添加它. 例如:
        java -javaagent:/opt/skywalking/agent/skywalking-agent.jar -jar yourApp.jar

      然后重啟服務(wù),就可以看到頁面上有數(shù)據(jù)了;如果發(fā)生了其他錯(cuò)誤,請查看日志進(jìn)行詳細(xì)排查;collector的日志和Web的日志都是在SkyWalking根目錄的log目錄之中(會在collector啟動之后創(chuàng)建);Agent的目錄是在agent目錄之下。

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