go-micro-learning's Introduction

micro

micro 用户查询案例

实现功能

链路跟踪

gateway-api -> api -> grpc

日志

访问日志、业务日志: 增加 Trace-Id 字段

etcd配置中心

micro etcd配置库功能进行封装，动态更新配置增加HookFunc功能

其他主要功能

熔断
prometheus监控
内部服务采用grpc通信

环境准备

jaeger部署

docker run -d --name jaeger -e COLLECTOR_ZIPKIN_HTTP_PORT=9411 -p 5775:5775/udp -p 6831:6831/udp -p 6832:6832/udp -p 5778:5778 -p 16686:16686 -p 14268:14268 -p 9411:9411 jaegertracing/all-in-one:1.6

etcd部署

docker命令

docker run -d \
  -p 2379:2379 \
  -p 2380:2380 \
  -v /Users/fred/application/data/etcd:/etcd-data \
  --name etcd_gcr_v3.3.13 \
  quay.io/coreos/etcd:v3.3.13 \
  /usr/local/bin/etcd \
  --name s1 \
  --data-dir /etcd-data \
  --listen-client-urls http://0.0.0.0:2379 \
  --advertise-client-urls http://0.0.0.0:2379 \
  --listen-peer-urls http://0.0.0.0:2380 \
  --initial-advertise-peer-urls http://0.0.0.0:2380 \
  --initial-cluster s1=http://0.0.0.0:2380 \
  --initial-cluster-token tkn \
  --initial-cluster-state new

客户端命令：

export ETCDCTL_API=3
etcdctl --endpoints='127.0.0.1:2380' put  /gateway/config/log_config '{"log_file_name":"./logs/info.log","ac_file_name":"./logs/access.log","max_size":128,"max_backups":30,"max_a
ge":7,"log_level":"debug"}'

etcdctl --endpoints='127.0.0.1:2380' put  /gateway/config/redis_config '{"addr":"127.0.0.1:26379","password":"","timeout":2000,"dbNum":0,"enabled":true,"sentinel":{"enabled":fals
e,"master":"","nodes":""}}'

etcdctl --endpoints='127.0.0.1:2380' put  /gateway/config/db_config '{"driver":"mysql","url":"root:qwe123a@tcp(127.0.0.1:23306)/cmdb_dome?charset=utf8&parseTime=true&loc=Local","
enabled":true,"max_idle_connection":2,"max_open_connection":3}'

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