SkyWalking服务应用

案例准备

节点规划

案例实施

1.部署Elasticsearch服务

(1)修改主机名

修改主机名后，执行bash命令 以生效新主机名

[root@localhost ~]# hostnamectl set-hostname node-1
[root@localhost ~]# bash
[root@node-1 ~]# 

(2)上传软件包并解压到/opt/目录下，进入解压的目录并创建data目录

[root@node-1 ~]# ls
anaconda-ks.cfg  elasticsearch-7.17.0-linux-x86_64.tar.gz 
[root@node-1 ~]# tar -zxvf elasticsearch-7.17.0-linux-x86_64.tar.gz -C /opt/
[root@node-1 ~]# cd /opt/elasticsearch-7.17.0/
[root@node-1 elasticsearch-7.17.0]# mkdir data

(3)修改Elasticsearch配置，在文件中找到并修改如下内容，如果找不到就添加到最后一行

[root@node-1 elasticsearch-7.17.0]# vi config/elasticsearch.yml    # 注意我写的是相对路径
# 下面是修改的内容
cluster.name: my-application
node.name: node-1
path.data: /opt/elasticsearch-7.17.0/data
path.logs: /opt/elasticsearch-7.17.0/logs
network.host: 0.0.0.0
cluster.initial_master_nodes: ["node-1"]
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type

(4)创建Elasticsearch启动用户，并设置数组及权限

[root@node-1 elasticsearch-7.17.0]# groupadd elsearch
[root@node-1 elasticsearch-7.17.0]# useradd -g elsearch -p elasticsearch elsearch
[root@node-1 elasticsearch-7.17.0]# chown -R elsearch:elsearch /opt/elasticsearch-7.17.0/

(5)修改资源限制及内核配置，添加如下内容

[root@node-1 elasticsearch-7.17.0]# vi /etc/security/limits.conf 
* hard nofile 65535
* soft nofile 65535
[root@node-1 elasticsearch-7.17.0]# vi /etc/sysctl.conf
vm.max_map_count=262144
[root@node-1 elasticsearch-7.17.0]# sysctl -p
vm.max_map_count = 262144
[root@node-1 elasticsearch-7.17.0]# reboot

重启后等一段时间在重新连接

(6)启动Elasticsearch服务

[root@node-1 ~]# cd /opt/elasticsearch-7.17.0/
[root@node-1 elasticsearch-7.17.0]# su elsearch
[elsearch@node-1 elasticsearch-7.17.0]$ ./bin/elasticsearch -d

(7)查询端口，存在9200则启动成功

[elsearch@node-1 elasticsearch-7.17.0]$ netstat -ntpl
(Not all processes could be identified, non-owned process infowill not be shown, you would have to be root to see it all.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -                   
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      -                   
tcp6       0      0 :::9200                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::9300                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::22                   :::*                    LISTEN      -                   
tcp6       0      0 ::1:25                  :::*                    LISTEN      -  

(8)切换至有桌面的虚拟环境中，使用浏览器访问192.168.100.10:9200(访问不了关闭防火墙，和SELinux)

[root@node-1 elasticsearch-7.17.0]# systemctl stop firewalld && systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@node-1 elasticsearch-7.17.0]# setenforce 0
[root@node-1 elasticsearch-7.17.0]# vi /etc/sysconfig/selinux 
....
..
SELINUX=disabled
...
..

2.部署SkyWalking OAP服务

(1)将提供的软件包上传至node-1节点/root/目录中，并设置jdk如下所示

[root@node-1 ~]# lsjdk-8u144-linux-x64.tar.gz
[root@node-1 ~]# tar -zxvf jdk-8u144-linux-x64.tar.gz -C /usr/local/

修改profile环境变量文件

[root@node-1 ~]# vi /etc/profile    # 在profile文件的最后一行添加如下内容
export JAVA_HOME=/usr/local/jdk1.8.0_144
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin
[root@node-1 ~]# source /etc/profile
[root@node-1 ~]# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

(2)将提供的软件包上传至node-1并解压到/opt目录下

[root@node-1 ~]# ls
apache-skywalking-apm-es7-8.0.0.tar.gz  gpmall-single.tar.gz
[root@node-1 ~]# tar -zxvf apache-skywalking-apm-es7-8.0.0.tar.gz -C /opt/

(3)进入解压后的目录，修改OAP配置文件

[root@node-1 ~]# cd /opt/apache-skywalking-apm-bin-es7/
[root@node-1 apache-skywalking-apm-bin-es7]# vi config/application.yml 
....
...
# 集群配置使用单机版
cluster:selector: ${SW_CLUSTER:standalone}standalone:
....
...
# 数据库使用
storage:selector: ${SW_STORAGE:elasticsearch7}   
....
..
....elasticsearch7:nameSpace: ${SW_NAMESPACE:""}clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:192.168.100.10:9200}

注意：

(4)启动OAP服务，查询端口，存在11800与12800则启动成功

[root@node-1 apache-skywalking-apm-bin-es7]# ./bin/oapService.sh 
SkyWalking OAP started successfully!    
[root@node-1 apache-skywalking-apm-bin-es7]# netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1188/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1446/master         
tcp6       0      0 :::9200                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::9300                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::22                   :::*                    LISTEN      1188/sshd           
tcp6       0      0 :::11800                :::*                    LISTEN      19635/java          
tcp6       0      0 ::1:25                  :::*                    LISTEN      1446/master         
tcp6       0      0 :::12800                :::*                    LISTEN      19635/java 

3.部署SkyWalking UI服务

(1)由于SkyWaliking UI的默认地址是8080，与很多中间件可能会纯在冲突，修改一下

[root@node-1 apache-skywalking-apm-bin-es7]# vi webapp/webapp.yml    # 修改如下内容
.....
...
server:port: 8888
...
..

(2)启动SkyWalking UI服务

[root@node-1 apache-skywalking-apm-bin-es7]# ./bin/webappService.sh 
SkyWalking Web Application started successfully!

(3)查看端口，存在8888则成功启动

[root@node-1 apache-skywalking-apm-bin-es7]# netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1188/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1446/master         
tcp6       0      0 :::9200                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::9300                 :::*                    LISTEN      2396/java           
tcp6       0      0 :::22                   :::*                    LISTEN      1188/sshd           
tcp6       0      0 :::8888                 :::*                    LISTEN      23062/java          
tcp6       0      0 :::11800                :::*                    LISTEN      19635/java          
tcp6       0      0 ::1:25                  :::*                    LISTEN      1446/master         
tcp6       0      0 :::12800                :::*                    LISTEN      19635/java 

(4)切换到桌面使用浏览器访问 192.168.100.10:8888

4.搭建并启动应用商城服务

(1)修改mall节点主机名，修改主机名后用bash命令刷新生效主机名

[root@mall ~]# hostnamectl set-hostname mall
[root@mall ~]# bash
[root@mall ~]#

修改/etc/hosts配置文件如下：

[root@mall ~]# vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.100.20 mall

(2)配置本地yum源

上传软件包到root目录下并解压，配置local.repo文件

[root@mall ~]# lsgpmall-single.tar.gz
[root@mall ~]# tar -zxvf gpmall-single.tar.gz -C /root/
[root@mall ~]# rm -rf /etc/yum.repos.d/*
[root@mall ~]# vi /etc/yum.repos.d/local.repo     # 按照实际情况修改如下内容
[mall]
name=mall
baseurl=file:///root/gpmall-single/gpmall-repo
gpgcheck=0
enabled=1

(3)安装基础服务

安装基础服务，包括Java JDK环境、数据库、Redis、Nginx等，安装基础服务的命令具体如下

1)安装JAVA环境

[root@mall ~]# yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
....
...
[root@mall ~]# java -version
openjdk version "1.8.0_262"
OpenJDK Runtime Environment (build 1.8.0_262-b10)
OpenJDK 64-Bit Server VM (build 25.262-b10, mixed mode)

2)安装Redis缓存服务

[root@mall ~]# yum install -y redis

3)安装Nginx服务

[root@mall ~]# yum install -y nginx

4)安装MariaDB数据库

[root@mall ~]# yum install -y mariadb mariadb-server 

安装ZooKeeper服务

[root@mall ~]# tar -zxvf gpmall-single/zookeeper-3.4.14.tar.gz -C /root/

进入到zookeeper-3.4.14/conf目录下，将zoo_sample.cfg文件重命名为zoo.cfg

[root@mall ~]# cd /root/zookeeper-3.4.14/conf/
[root@mall conf]# mv zoo_sample.cfg zoo.cfg

进入到zookeeper-3.4.14/bin目录下，启动ZooKeeper服务

[root@mall conf]# cd ../bin/
[root@mall bin]# ./zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /root/zookeeper-3.4.14/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看zookeeper状态

[root@mall bin]# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /root/zookeeper-3.4.14/bin/../conf/zoo.cfg
Mode: standalone

安装Kafka服务

[root@mall bin]# tar -zxvf /root/gpmall-single/kafka_2.11-1.1.1.tgz -C /root/

进入到kafka_2.11-1.1.1/bin目录下，启动Kafka服务

[root@mall bin]# cd /root/kafka_2.11-1.1.1/bin/
[root@mall bin]# ./kafka-server-start.sh -daemon ../config/server.properties 

使用jps或者netstat -ntpl目录查看kafka是否启动成功

[root@mall bin]# jps
26324 Jps
22454 QuorumPeerMain
25564 Kafka
[root@mall bin]# netstat -ntpl  # 运行结果查看到Kafka服务和9092端口，说明Kafka服务已启动
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1482/master         
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1223/sshd           
tcp6       0      0 ::1:25                  :::*                    LISTEN      1482/master         
tcp6       0      0 :::40001                :::*                    LISTEN      25564/java          
tcp6       0      0 :::9092                 :::*                    LISTEN      25564/java          
tcp6       0      0 :::2181                 :::*                    LISTEN      22454/java          
tcp6       0      0 :::32881                :::*                    LISTEN      22454/java          
tcp6       0      0 :::22                   :::*                    LISTEN      1223/sshd  

(4)启动服务

①启动数据库并设置

修改数据库配置文件并启动MariaDB数据库，设置root用户密码为123456，并创建gpmall数据库，将提供的gpmall.sql导入

修改/etc/my.cnf文件，添加字段

[root@mall bin]# cd
[root@mall ~]# vi /etc/my.cnf
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

启动数据库

[root@mall ~]# systemctl start mariadb

设置root用户的密码为123456并登录

[root@mall ~]# mysqladmin -uroot password 123456
[root@mall ~]# mysql -uroot -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \\g.
Your MariaDB connection id is 9
Server version: 10.3.23-MariaDB MariaDB ServerCopyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.MariaDB [(none)]> 

设置root的用户的权限

MariaDB [(none)]> grant all privileges on *.* to root@localhost identified by '123456' with grant option;
Query OK, 0 rows affected (0.000 sec)MariaDB [(none)]> grant all privileges on *.* to root@"%" identified by '123456' with grant option;
Query OK, 0 rows affected (0.000 sec)

创建数据库gpmall并导入/root/gpmall-single/gpmall.sql

MariaDB [(none)]> create database gpmall;
Query OK, 1 row affected (0.001 sec)MariaDB [(none)]> use gpmall;
Database changed
MariaDB [gpmall]> source /root/gpmall-single/gpmall.sql

退出数据库设置开机自启

MariaDB [gpmall]> exit
Bye
[root@mall ~]# systemctl enable mariadb
Created symlink from /etc/systemd/system/mysql.service to /usr/lib/systemd/system/mariadb.service.
Created symlink from /etc/systemd/system/mysqld.service to /usr/lib/systemd/system/mariadb.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.

②启动Redis服务

修改Redis配置文件，编辑/etc/redis.conf文件。

将bind 127.0.0.1这一行注释掉；将protected-mode yes 改为 protected-mode no。

[root@mall ~]# vi /etc/redis.conf 
....
...
#bind 127.0.0.1
protected-mode no
....
..
[root@mall ~]# systemctl start redis
[root@mall ~]# systemctl enable redis
Created symlink from /etc/systemd/system/multi-user.target.wants/redis.service to /usr/lib/systemd/system/redis.service.

③启动Nginx服务

[root@mall ~]# systemctl start nginx
[root@mall ~]# systemctl enable nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.

(5)应用系统部署

使用提供gpmall-shopping-0.0.1-SNAPSHOT.jar、gpmall-user-0.0.1-SNAPSHOT.jar、shopping-provider-0.0.1-SNAPSHOT.jar、user-provider-0.0.1-SNAPSHOT.jar 、dist这5个包部署应用系统，其中4个jar包为后端服务包，dist为前端包。（包在gpmall-single目录下）

①全局变量配置

修改/etc/hosts文件，修改项目全局配置文件如下(原有的192.168.100.20 mall 映射删除)

[root@mall ~]# vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.100.20  kafka.mall
192.168.100.20  mysql.mall
192.168.100.20  redis.mall
192.168.100.20  zookeeper.mall

②部署前端

清空默认项目路径下的文件，将dist目录下的文件，复制到Nginx默认项目路径（文件在gpmall-single目录下）。

[root@mall ~]# rm -rf /usr/share/nginx/html/*
[root@mall ~]# cp -rf gpmall-single/dist/* /usr/share/nginx/html/

修改Nginx配置文件/etc/nginx/nginx.conf，添加映射

http {# 其他配置server {listen 80;listen [::]:80;server_name _;root /usr/share/nginx/html;# Load configuration files for the default server block.include /etc/nginx/default.d/*.conf;location / {root /usr/share/nginx/html;index index.html index.htm;}location /user {proxy_pass http://127.0.0.1:8082;}location /shopping {proxy_pass http://127.0.0.1:8081;}location /cashier {proxy_pass http://127.0.0.1:8083;}error_page 404 /404.html;}
}

重启Nginx服务

[root@mall ~]# systemctl restart nginx

到此前端部署完毕

③部署后端

将node-1节点的/opt/apache-skywalking-apm-bin-es7目录下的agent目录复制到mall节点下(密码为node-1的密码)

[root@mall ~]# scp -r 192.168.100.10:/opt/apache-skywalking-apm-bin-es7/agent /root

修改SkyWalking agent配置文件：

[root@mall ~]# vi agent/config/agent.config....
agent.service_name=${SW_AGENT_NAME:my-application}
agent.sample_n_per_3_secs=${SW_AGENT_SAMPLE:1}
.....
collector.backend_service=${SW_AGENT_COLLECTOR_BACKEND_SERVICES:192.168.100.10:11800}

将gpmall软件包中提供的4个jar包，放置探针并启动，通过设置启动参数的方式检测系统，启动命令如下：

[root@mall ~]# vi agent/config/agent.config 
[root@mall ~]# nohup java -javaagent:/root/agent/skywalking-agent.jar -jar gpmall-single/shopping-provider-0.0.1-SNAPSHOT.jar &[root@mall ~]# nohup java -javaagent:/root/agent/skywalking-agent.jar -jar gpmall-single/user-provider-0.0.1-SNAPSHOT.jar &[root@mall ~]# nohup java -javaagent:/root/agent/skywalking-agent.jar -jar gpmall-single/gpmall-shopping-0.0.1-SNAPSHOT.jar &[root@mall ~]# nohup java -javaagent:/root/agent/skywalking-agent.jar -jar gpmall-single/gpmall-user-0.0.1-SNAPSHOT.jar &[root@mall ~]# setsebool -P httpd_can_network_connect 1   # httpd访问网络配置

④网站访问

打开浏览器，在地址栏中输入192.168.100.20 访问界面

单击右上角“头像”，进行登录操作，使用用户名/密码为test/test进行登录