skywalking配置nacos集群模式

版本：

name	version
nacos	1.1.0
skywalking	6.2.0
elasticsearch	6.3.2

es集群管理工具 cerebro-0.8.3 https://github.com/lmenezes/cerebro

前置：

es、nacos至少各有一个

开始：

1.将 apache-skywalking-apm-6.2.0.zip 解压并复制两份

2.配置skywalking-6.2.0_1/config/application.yml

core:
  default:
    # Mixed: Receive agent data, Level 1 aggregate, Level 2 aggregate
    # Receiver: Receive agent data, Level 1 aggregate
    # Aggregator: Level 2 aggregate
    role: ${SW_CORE_ROLE:Mixed} # Mixed/Receiver/Aggregator
    restHost: ${SW_CORE_REST_HOST:0.0.0.0}
    restPort: ${SW_CORE_REST_PORT:12800}
    restCont