搭建skywalking需要用到三个镜像:
elasticsearch：用来存储数据
skywalking-oap-server：Skywalking服务器
skywalking-ui ：Skywalking的UI界面

下载镜像

docker pull elasticsearch:7.9.0
docker pull apache/skywalking-oap-server:8.9.1
docker pull apache/skywalking-ui:8.9.1

Docker 单独镜像安装

安装elasticsearch

本机创建持久化目录，官方推荐

mkdir -p /Users/admin/Documents/data/elasticsearch/data
mkdir -p /Users/admin/Documents/data/elasticsearch/logs

持久化启动elasticsearch

安装elasticsearch并挂载文件

docker run -d --name=es7 \
--restart=always \
-p 9200:9200 -p 9300:9300 \
-e "discovery.type=single-node" \
-v /Users/admin/Documents/data/elasticsearch/data:/usr/share/elasticsearch/data \
-v /Users/admin/Documents/data/elasticsearch/logs:/usr/share/elasticsearch/logs \
elasticsearch:7.9.0

查看启动情况

docker ps -a

查看镜像日志

docker logs -f es7

验证ES

浏览器访问：http://localhost:9200/，返回：

{"name" : "a0455020b01a","cluster_name" : "docker-cluster","cluster_uuid" : "AFy_WI-iQa63pVug9XIUXQ","version" : {"number" : "7.9.0","build_flavor" : "default","build_type" : "docker","build_hash" : "a479a2a7fce0389512d6a9361301708b92dff667","build_date" : "2020-08-11T21:36:48.204330Z","build_snapshot" : false,"lucene_version" : "8.6.0","minimum_wire_compatibility_version" : "6.8.0","minimum_index_compatibility_version" : "6.0.0-beta1"},"tagline" : "You Know, for Search"
}

安装skywalking-oap

需要先安装好es才能安装opa

启动 skywalking-oap

docker run --name oap --restart=always -d \
-e TZ=Asia/Shanghai \
-p 12800:12800 \
-p 11800:11800 \
--link es7:es7 \
-e SW_STORAGE=elasticsearch7 \
-e SW_STORAGE_ES_CLUSTER_NODES=es7:9200 \
apache/skywalking-oap-server:8.9.0

-e TZ=Asia/Shanghai：指定时区。
--link es7:es7：关联es7容器，通过容器名字来解决ip会发生变更的问题。
-e SW_STORAGE=elasticsearch：设置环境变量，指定存储方式。
-e SW_STORAGE_ES_CLUSTER_NODES=es7:9200：设置环境变量，指定ES的地址

登录容器

docker exec -it oap bash

安装skywalking-ui

启动UI

docker run -d --name skywalking-ui \
--restart=always \
-e TZ=Asia/Shanghai \
-p 8088:8080 \
--link oap:oap \
-e SW_OAP_ADDRESS=oap:12800 \
apache/skywalking-ui:8.9.0

访问UI：http://localhost:8088/

docker-compose 安装

编写docker-compose.yml文件

https://github.com/apache/skywalking/tree/master/docker 官网有示例docker-compose.yml文件，我们只需要下载下来修改下即可。

# 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
#
# Unless required by applicable law or agreed to in writing, software
# 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.# 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
#
# Unless required by applicable law or agreed to in writing, software
# 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.version: '3.8'
services:elasticsearch:# image: docker.elastic.co/elasticsearch/elasticsearch-oss:${ES_VERSION}image: elasticsearch:7.9.0container_name: elasticsearch# --restart=always ： 开机启动，失败也会一直重启；# --restart=on-failure:10 ： 表示最多重启10次restart: alwaysports:- "9200:9200"- "9300:9300"healthcheck:test: [ "CMD-SHELL", "curl --silent --fail localhost:9200/_cluster/health || exit 1" ]interval: 30stimeout: 10sretries: 3start_period: 10senvironment:- discovery.type=single-node# 锁定物理内存地址，防止elasticsearch内存被交换出去,也就是避免es使用swap交换分区，频繁的交换，会导致IOPS变高；- bootstrap.memory_lock=true# 设置时区- TZ=Asia/Shanghai# - "ES_JAVA_OPTS=-Xms512m -Xmx512m"ulimits:memlock:soft: -1hard: -1oap:image: apache/skywalking-oap-server:8.9.1container_name: oaprestart: always# 设置依赖的容器depends_on:elasticsearch:condition: service_healthy# 关联ES的容器，通过容器名字来找到相应容器，解决IP变动问题links:- elasticsearch# 端口映射ports:- "11800:11800"- "12800:12800"# 监控检查healthcheck:test: [ "CMD-SHELL", "/skywalking/bin/swctl ch" ]# 每间隔30秒执行一次interval: 30s# 健康检查命令运行超时时间，如果超过这个时间，本次健康检查就被视为失败；timeout: 10s# 当连续失败指定次数后，则将容器状态视为 unhealthy，默认 3 次。retries: 3# 应用的启动的初始化时间，在启动过程中的健康检查失效不会计入，默认 0 秒。start_period: 10senvironment:# 指定存储方式SW_STORAGE: elasticsearch# 指定存储的地址SW_STORAGE_ES_CLUSTER_NODES: elasticsearch:9200SW_HEALTH_CHECKER: defaultSW_TELEMETRY: prometheusTZ: Asia/Shanghai# JAVA_OPTS: "-Xms2048m -Xmx2048m"ui:image: apache/skywalking-ui:8.9.1container_name: skywalking-uirestart: alwaysdepends_on:oap:condition: service_healthylinks:- oapports:- "8088:8080"environment:SW_OAP_ADDRESS: http://oap:12800TZ: Asia/Shanghai

启动容器

切换到docker-compose.yml文件下，然后执行一下命令：

docker-compose up -d

查看启动镜像

docker-compose ps

浏览器验证

访问网址 http://localhost:8088/

下载agent

下载源码包，然后解压取agent目录
https://archive.apache.org/dist/skywalking/8.9.1/
或
https://skywalking.apache.org/downloads/
解压获得agent.jar。
修改conf配置文件
将地址改为skywalking地址

agent.service_name=${SW_AGENT_NAME:Your_ApplicationName}
agent.instance_name=${SW_AGENT_INSTANCE_NAME:}
collector.backend_service=${SW_AGENT_COLLECTOR_BACKEND_SERVICES:127.0.0.1:11800}

启动文件配置agent

-javaagent:/skywalking-agent/skywalking-agent.jar -Dskywalking.agent.service_name=demoskywalking -Dskywalking.collector.backend_service=127.0.0.1:11800

jar包方式

java -javaagent:/skywalking-agent/agent/skywalking-agent.jar
-Dskywalking.agent.service_name=app-service
-Dskywalking.collector.backend_service=127.0.0.1:11800
-jar app-service.jar &

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