go程序调用k8s pod副本的名称IP手动赋值给configmap的参数

1、创建configmap

---
apiVersion: v1
data:
  config.yaml: >-
    # config.yaml


    Etcd:
      Endpoints:
        - "etcd-server:2379"
      Username: ""
      Password: ""

    Exchanges:
      #- Name: "Binance"
      #  Symbol: "BTCUSDT"
      #  WSUrl: "wss://fstream.binance.com/ws"
      - Name: "OKX"
        Symbol: "BTCUSDT"
        WSUrl: "wss://ws.okx.com:8443/ws/v5/public"
      #- Name: "Bybit"
      #  Symbol: "ETHUSDT"
      #  WSUrl: "wss://stream.bybit.com/v5/public/linear"
      #- Name: "Bitget"
      #  Symbol: "DOGEUSDT"
      #  WSUrl: "wss://ws.bitget.com/mix/v1/stream"
      #  ContractType: "mc"
      #- Name: "Pyth"
      #  Symbol: "BTCUSDT"
      #  WSUrl: "wss://hermes.pyth.network/ws"
      #  PriceId: "e62df6c8b4a85fe1a67db44dc12de5db330f7ac66b72dc658afedf0f4a415b43"

    DatabaseDSN:
    "abc:defg@tcp(rm-sefdref.mysql.rds.aliyuncs.com:3306)/miniapp"


    RedisAddr: "0.0.0.0:6379"

    RedisPassword: "S4t#d%dgrdfer3"

    RedisDB: 1


    KafkaBrokers:
      - "0.0.0.0:3195"

    BOT_TOKEN: "sefefedsfa:AAELY1TwInw46D3Lhpl0LvpQz2v-DoIq5ww"


    KafkaPriceUpdateTopic: "price_updates"


    SupportedCoins:
      - "BTC"
      - "ETH"
    #

    #Chains:

    #  - Name: "ETH"

    ##    ChainName: "ETH"

    ##    NodeUrl:
    "https://crimson-frosty-county.quiknode.pro/serfefwaetwegrteyhtdrtyhfhyjhtf/"

    ##    ConfirmationNum: 16

    #    ExcludedAddresses: "11","22"

    ##    ScanInterval: 60

    #


    BaseSlippage: 0.005


    #Port: "0.0.0.0:8901"


    LogLevel: "info"



    Services:
      - Name: "api_gateway"
        ServiceID: "api-gateway-1"
        ServiceHost: "api_gateway"
        ServicePort: 8080
      - Name: "spider_service"
        ServiceID: "spider-service-1"
        ServiceHost: "spider_service"
        ServicePort: 50051
      - Name: "${SERVICE_NAME}"
        ServiceID: "${SERVICE_ID}"
        ServiceHost: "${POD_IP}"
        ServicePort: ${SERVICE_PORT}
      - Name: "trading_engine_service"
        ServiceID: "trading-engine-service-1"
        ServiceHost: "trading_engine_service"
        ServicePort: 50053
      - Name: "auth_service"
        ServiceID: "auth-service-1"
        ServiceHost: "auth_service"
        ServicePort: 50054
      - Name: "user_service"
        ServiceID: "user-service-1"
        ServiceHost: "user_service"
        ServicePort: 50055
      - Name: "account_service"
        ServiceID: "account-service-1"
        ServiceHost: "account_service"
        ServicePort: 50056
      - Name: "wallet_service"
        ServiceID: "wallet-service-1"
        ServiceHost: "wallet_service"
        ServicePort: 50057
    #    HttpPort : 8091
      - Name: "chain_scanner_service"
        ServiceID: "chain-scanner-service-1"
        ServiceHost: "chain_scanner_service"
        ServicePort: 50058
      - Name: "out_service"
        ServiceID: "out-service-1"
        ServiceHost: "out_service"
        ServicePort: 50059

    SlippageTiers:
      tier1:
        - Threshold: 1000
          Factor: 0.001
        - Threshold: 5000
          Factor: 0.0008
      tier2:
        - Threshold: 10000
          Factor: 0.0005

    GameOptions:
      TenantId: 90026
      ProductCode: UD_OPTION
      ExitUrl: https://t.me/abc/Good
      AccessCode: 15224562686655
      IvValue: DJIOHFDsaifiajfiwefjqwi63
      GetUrl: https://abc.pro/saas-option-api/open/tenant/getSaasOptionUrl
kind: ConfigMap
metadata:
  name: config.yaml
  namespace: test
  resourceVersion: '150039730'

2、创建deployment，其中包含initContainers和containers两部分

---
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    k8s.kuboard.cn/displayName: bot-service
  labels:
    k8s.kuboard.cn/name: bot-service
  name: bot-service
  namespace: test
  resourceVersion: '150036998'
spec:
  progressDeadlineSeconds: 600
  replicas: 2
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s.kuboard.cn/name: bot-service
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        k8s.kuboard.cn/name: bot-service
    spec:
      containers:
        - env:
            - name: SERVICE_ID
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.name
          image: 'harbor.cuiwjrpcvi.com/bktest/bot_service:test'
          imagePullPolicy: IfNotPresent
          name: bot-service
          ports:
            - containerPort: 50052
              name: adwqdw
              protocol: TCP
          resources: {}
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /telegram/shared/config
              name: config-output
      dnsPolicy: ClusterFirst
      hostAliases:
        - hostnames:
            - etcd-server
          ip: 172.16.1.193
      imagePullSecrets:
        - name: harbor-secret
      initContainers:
        - args:
            - >-
              apk add --no-cache gettext && envsubst <
              /config-template/config.yaml >
              /telegram/shared/config/config.yaml;
          command:
            - /bin/sh
            - '-c'
          env:
            - name: SERVICE_ID
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.name
            - name: POD_IP
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: status.podIP
            - name: SERVICE_NAME
              value: bot-service
            - name: SERVICE_PORT
              value: '50052'
          image: 'alpine:3.17'
          imagePullPolicy: IfNotPresent
          name: bot-service-init
          resources: {}
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /config-template
              name: config-template
            - mountPath: /telegram/shared/config/
              name: config-output
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
      volumes:
        - configMap:
            defaultMode: 420
            items:
              - key: config.yaml
                path: config.yaml
            name: config.yaml
          name: config-template
        - emptyDir: {}
          name: config-output

3、启动deployment并登录容器验证结果
查询configmap文本内容
节点一

cat shared/config/config.yaml
。。。。。。
  - Name: "bot-service"
    ServiceID: "bot-service-5c7745fff4-c8w6b"
    ServiceHost: "172.20.250.31"
    ServicePort: 50052
。。。。。。    

节点二

cat shared/config/config.yaml
。。。。。。
  - Name: "bot-service"
    ServiceID: "bot-service-5c7745fff4-8p72g"
    ServiceHost: "172.20.171.3"
    ServicePort: 50052
。。。。。。    

4、登录etcd查看注册情况

root@iZj6ch896i3lsjbs6cqk2iZ:/data/docker-compose/bot_service# docker exec -it etcd-server /bin/bash
I have no name!@etcd-server:/opt/bitnami/etcd$ etcdctl get --prefix /service
/services/bot/bot-service-5c7745fff4-8p72g
172.20.171.3:50052
/services/bot/bot-service-5c7745fff4-c8w6b
172.20.250.31:50052

至此go程序通过自己提交ip和服务信息注册到etcd已成功完成