SkyWalking

SkyWalking 是分布式系统的应用程序性能监视工具，专为微服务、云原生架构和基于容器（Docker、K8s、Mesos）架构而设计。SkyWalking 是观察性分析平台和应用性能管理系统，提供分布式追踪、服务网格遥测分析、度量聚合和可视化一体化解决方案。

以下说明SkyWalking集群部署的流程：

1.准备

• Nacos集群，准备集群访问地址，参考Nacos部署内容。
• Elasticsearch集群，准备集群访问地址，参考ELK部署内容。
• 负载均衡服务器，用于配置SkyWalking访问，参考Nginx部署内容。
• 至少2台服务器，用于集群高可用部署。

1.下载

下载地址：https://archive.apache.org/dist/skywalking/8.8.1/apache-skywalking-apm-8.8.1.tar.gz

下载后上传到2台服务器上。

2.部署

在2台服务器上分别进行以下操作，默认数据盘在/hos：

2.1 解压

tar zxf apache-skywalking-apm-8.8.1.tar.gz -C /hos/

2.2 修改配置

修改后端服务的配置文件：apache-skywalking-apm-bin/config/application.yml

cluster:
  selector: ${SW_CLUSTER:nacos}
  nacos:
    serviceName: ${SW_SERVICE_NAME:"SkyWalking_OAP_Cluster"}
    hostPort: ${SW_CLUSTER_NACOS_HOST_PORT:localhost:8848}
    # Nacos Configuration namespace
    namespace: ${SW_CLUSTER_NACOS_NAMESPACE:"public"}
    # Nacos auth username
    username: ${SW_CLUSTER_NACOS_USERNAME:""}
    password: ${SW_CLUSTER_NACOS_PASSWORD:""}

storage:
  selector: ${SW_STORAGE:elasticsearch}
  elasticsearch:
    namespace: ${SW_NAMESPACE:""}
    clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:localhost:9200}
    protocol: ${SW_STORAGE_ES_HTTP_PROTOCOL:"http"}

其中：

• localhost:8848修改为nacos服务器地址。
• localhost:9200修改为elasticsearch地址。

修改前端UI的配置文件：apache-skywalking-apm-bin/webapp/webapp.yml

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
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# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

server:
  port: 8080

spring:
  cloud:
    gateway:
      routes:
        - id: oap-route
          uri: lb://oap-service
          predicates:
            - Path=/graphql/**
    discovery:
      client:
        simple:
          instances:
            oap-service:
              - uri: http://127.0.0.1:12800
            # - uri: http://<oap-host-1>:<oap-port1>
            # - uri: http://<oap-host-2>:<oap-port2>

  mvc:
    throw-exception-if-no-handler-found: true

  web:
    resources:
      add-mappings: true

management:
  server:
    base-path: /manage

其中oap-service:配置2个后端服务的地址。

2.3 启动服务

sh apache-skywalking-apm-bin/bin/startup.sh

2.4 配置负载均衡

stream {
    upstream skywalking-oap-server {
        server 10.241.12.4:11800;
        server 10.241.12.5:11800 backup;
    }
    upstream skywalking-ui {
        server 10.241.12.4:8080;
        server 10.241.12.5:8080 backup;
    }
    
    server {
        listen 11800;
        proxy_pass skywalking-oap-server;
    }
    server {
        listen 8080;
        proxy_pass skywalking-ui;
    }
}

3.访问验证

访问负载均衡虚拟IP地址:8080，即可打开skywalking的web页面。