一 整体架构
整个架构，分成上、下、左、右四部分：
- 上部分 Agent ：负责从应用中，收集链路信息，发送给 SkyWalking OAP 服务器。目前支持 SkyWalking、Zikpin、Jaeger 等提供的 Tracing 数据信息。而我们目前采用的是，SkyWalking Agent 收集 SkyWalking Tracing 数据，传递给服务器。
- 下部分 SkyWalking OAP ：负责接收 Agent 发送的 Tracing 数据信息，然后进行分析(Analysis Core) ，存储到外部存储器( Storage )，最终提供查询( Query )功能。
- 右部分 Storage ：Tracing 数据存储。目前支持 ES、MySQL、Sharding Sphere、TiDB、H2 多种存储器。而我们目前采用的是 ES ，主要考虑是 SkyWalking 开发团队自己的生产环境采用 ES 为主。
- 左部分 SkyWalking UI ：负责提供控台，查看链路等等。
二 安装
已验证skywalking9.6.0，centos7.0， MySQL8.0.26
2.1 jdk安装
-
Skywalking9.6.0需要jdk9+及以上
- 下载解压到/usr/local/java/jdk11
- 配置环境变量
# 打开文件
vim /etc/profile
# 在文件最后加上
JAVA_HOME=/usr/local/java/jdk11
PATH=$PATH:$JAVA_HOME/bin
# 保存退出
# 应用修改
source /etc/profile
# 验证：
java -version
2.2 安装skywalking
- 下载安装包官网（慢），推荐清华源
- 解压放置路径/usr/local/skywalking
2.2.1 运行
-
进入/usr/local/skywalking/bin目录
运行oapService
./oapService.sh &运行ui webappService,默认端口8080
./webappService.sh & -
验证运行结果
[root@localhost bin]# jps 6099 Jps 18824 OAPServerStartUp 9817 ApplicationStartUp # 查看访问 [root@localhost bin]# curl localhost:8080浏览器访问IP:8080(防火墙开启端口)
2.2.2 结果
三 配置
3.1 数据库
-
skywalking 默认使用h2数据库，基于内容的数据库，重启服务后数据重置,修改存储，支持数据持久化
-
修改/usr/local/skywalking/config/application.yaml
# line 159 storage:selector: ${SW_STORAGE:h2}
-
修改为mysql ,我这里用的MySQL8.0.26
# line 159 storage:selector: ${SW_STORAGE:mysql}# line 191 变更自己的库名，添加驱动包名mysql:properties:jdbcUrl: ${SW_JDBC_URL:"jdbc:mysql://yourIP:3306/swtest?rewriteBatchedStatements=true&allowMultiQueries=true"}dataSource.user: ${SW_DATA_SOURCE_USER:root}dataSource.password: ${SW_DATA_SOURCE_PASSWORD:your password}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}maxSizeOfBatchSql: ${SW_STORAGE_MAX_SIZE_OF_BATCH_SQL:2000}asyncBatchPersistentPoolSize: ${SW_STORAGE_ASYNC_BATCH_PERSISTENT_POOL_SIZE:4}driver: com.mysql.cj.jdbc.Driver# 保存退出，配置修改完成
-
添加MySQL8驱动包到路径/usr/local/skywalking/oap-libs/下
-
重启oapService服务验证，是否正常运行
- jps
- kill -9 pid （oapService的）
- 重启oapService
3.2 访问端口修改
- 修改文件/usr/local/skywalking/webapp/application
- 重启webappService服务
- jps
- kill -9 pid（webappService的）
- 重启webappService
四 监控
- Prometheus 节点导出器从虚拟机收集指标数据。
- OpenTelemetry Collector 通过 Prometheus Receiver 从 node-exporter 获取指标，并通过 OpenTelemetry gRPC 导出器将指标推送到 SkyWalking OAP Server。
- SkyWalking OAP Server 使用 MAL 解析表达式，以过滤/计算/聚合和存储结果。
4.1 self-observability自监控
4.1.1 节点导出器
-
修改配置文件/usr/local/skywalking/config/application.yaml
# line 452 telemetry:selector: ${SW_TELEMETRY:prometheus}none:prometheus:host: ${SW_TELEMETRY_PROMETHEUS_HOST:0.0.0.0}port: ${SW_TELEMETRY_PROMETHEUS_PORT:1234}sslEnabled: ${SW_TELEMETRY_PROMETHEUS_SSL_ENABLED:false}sslKeyPath: ${SW_TELEMETRY_PROMETHEUS_SSL_KEY_PATH:""}sslCertChainPath: ${SW_TELEMETRY_PROMETHEUS_SSL_CERT_CHAIN_PATH:""}
-
重启oapService服务。
4.1.2 节点收集器
-
安装OpenTelemetry Collector
# RPM Installation sudo yum update sudo yum -y install wget systemctl wget https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v0.89.0/otelcol_0.89.0_linux_amd64.rpm sudo rpm -ivh otelcol_0.89.0_linux_amd64.rpm
-
修改OpenTelemetry Collector配置文件
-
创建自己的配置文件otel-collection-config.yaml (/etc/otelcol/)
receivers:prometheus:config:scrape_configs:- job_name: "skywalking-so11y" scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:1234"]labels:host_name: vmlinuxservice: self-observability processors:batch:exporters:otlp:endpoint: "your IP:11800" # The OAP Server addresstls:insecure: truelogging:loglevel: debug service:pipelines:metrics:receivers: [prometheus]processors: [batch]exporters: [otlp, logging]
-
修改OpenTelemetry Collector启动记载配置文件/etc/otelcol/otelcol.conf指向新建的otel-collection-config.yaml
# Systemd environment file for the otelcol service # Command-line options for the otelcol service. # Run `/usr/bin/otelcol --help` to see all available options. # OTELCOL_OPTIONS="--config=/etc/otelcol/config.yaml" OTELCOL_OPTIONS="--config=/etc/otelcol/otel-collector-config.yaml"
-
重启OpenTelemetry Collector
systemctl restart otelcol
-
4.1.3 访问查看
4.2 基础设施监控-Linux
4.2.1 节点导出器
- 安装并运行节点导出器
wget https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.gz
tar xvfz node_exporter-1.7.0.linux-amd64.tar.gz
mkdir /usr/local/skywalking/exporter
mv node_exporter-1.7.0.linux-amd6 /usr/local/skywalking/exporter/node_exporter
cd node_exporter
nohup ./node_exporter > /usr/local/skywalking/exporter/node_exporter/node_exporter.log 2>&1 &
# 验证
curl 127.0.0.1:9100
4.2.2 节点收集器
- 修改OpenTelemetry Collector配置文件otel-collection-config.yaml
receivers:prometheus:config:scrape_configs:- job_name: "vm-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9100"]labels:node_identifier_host_name: vm-machine- job_name: "skywalking-so11y"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:1234"]labels:host_name: vmlinuxservice: self-observability
processors:batch:exporters:otlp:endpoint: "you IP:11800" # The OAP Server addresstls:insecure: truelogging:loglevel: debug
service:pipelines:metrics:receivers: [prometheus]processors: [batch]exporters: [otlp, logging]
- 重启OpenTelemetry Collector
systemctl restart otelcol
4.2.3 查看访问
4.3 数据库-Redis
4.3.1 节点导出器
wget https://github.com/oliver006/redis_exporter/releases/download/v1.55.0/redis_exporter-v1.55.0.linux-amd64.tar.gz
tar xvfz redis_exporter-v1.55.0.linux-amd64.tar.gz
mv node_exporter-1.7.0.linux-amd6 /usr/local/skywalking/exporter/redis_exporter
cd redis_exporter
nohup ./redis_exporter -redis.password="your password" > /usr/local/skywalking/exporter/redis_exporter/redis_exporter.log 2>&1 &
# 验证
curl 127.0.0.1:9100
4.3.2 节点导入器
-
修改OpenTelemetry Collector配置文件otel-collection-config.yaml
receivers:prometheus:config:scrape_configs:- job_name: "vm-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9100"]labels:node_identifier_host_name: vm-machine- job_name: "skywalking-so11y"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:1234"]labels:host_name: vmlinuxservice: self-observability- job_name: "redis-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9121"]labels:host_name: redis processors:batch:exporters:otlp:endpoint: "your IP:11800" # The OAP Server addresstls:insecure: truelogging:loglevel: debug service:pipelines:metrics:receivers: [prometheus]processors: [batch]exporters: [otlp, logging]
-
重启OpenTelemetry Collector
systemctl restart otelcol
4.3.3 访问查看
4.4 数据库-MySQL
4.4.1 节点导出器
- 创建MySQL监控账号并授权
CREATE USER 'mysql_exporter'@'%' IDENTIFIED BY 'your password' WITH MAX_USER_CONNECTIONS 3;
GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'mysql_exporter'@'%';
FLUSH PRIVILEGES;
- mysqld_exporter.conf
[client]
user=mysql_exporter
password=your password
- 启动mysql_exporter
wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.15.0/mysqld_exporter-0.15.0.linux-amd64.tar.gz
tar xvfz mysqld_exporter-0.15.0.linux-amd64.tar.gz
mv mysqld_exporter-0.15.0.linux-amd64 /usr/local/skywalking/exporter/mysqld_exporter
cd mysqld_exporter
# 创建配置MySQL监控账号的文件/usr/local/skywalking/exporter/mysqld_exporter/mysqld_exporter.conf
nohup ./mysqld_exporter --config.my-cnf="mysqld_exporter.conf" > /usr/local/skywalking/exporter/mysql_exporter/mysql_exporter.log 2>&1 &
# 验证
curl 127.0.0.1:9104
4.4.2 节点接收器
-
修改OpenTelemetry Collector配置文件otel-collection-config.yaml
receivers:prometheus:config:scrape_configs:- job_name: "vm-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9100"]labels:node_identifier_host_name: vm-machine- job_name: "skywalking-so11y"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:1234"]labels:host_name: vmlinuxservice: self-observability- job_name: "mysql-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9104"]labels:host_name: mysql8- job_name: "redis-monitoring"scrape_interval: 10sstatic_configs:- targets: ["0.0.0.0:9121"]labels:host_name: redisprocessors:batch:exporters:otlp:endpoint: "your IP:11800" # The OAP Server addresstls:insecure: truelogging:loglevel: debug service:pipelines:metrics:receivers: [prometheus]processors: [batch]exporters: [otlp, logging]-
重启OpenTelemetry Collector
systemctl restart otelcol
-
4.4.3 访问查看
