不使用pvc的方式在K8S中部署apisix-gateway

简介

我的apisix使用etcd作为数据存储服务器,官方的使用pvc方式或者docker-compose的方式,对于新手不太友好,本篇是从etcd的安装到apisix的打通都会涉及。

部署etcd

etcd 是一个分布式键值对存储,设计用来可靠而快速的保存关键数据并提供访问。通过分布式锁,leader选举和写屏障(write barriers)来实现可靠的分布式协作。etcd集群是为高可用,持久性数据存储和检索而准备。

  • ubuntu部署etcd

    • ubuntu中部署etcd的两种方式:

      一种是去GitHub下载二进制的安装包,还有一种是apt-get install etcd,第二种方式我也尝试过,可能是我软件源的问题,版本有点老,所以我就换成了使用第一种方式,而且也比较推荐使用第一种方式。

    • 我用的etcd下载的版本是3.5.2,废话不多说直接看步骤:

      1、将etcd etcdctl etcdutl 二进制文件拷贝到/usr/local/bin目录下

      /usr/local/bin

      2、创建一个etcd的etcd.conf.yml,将下面代码拷贝进去,我这里etcd就简单的配置了一下,没有做集群,所以yml很简单。

      name: etcd-1
      data-dir: /home/etcd/data
      listen-client-urls: http://0.0.0.0:2379
      advertise-client-urls: http://0.0.0.0:2379

      3、通过etcd --config-file etcd.conf.yml的路径运行,如下图就是成功了,也可以使用etcd manager客户端来测试。



      4、如果使用etcd直接启动的话没有办法后台运行,所以我们需要在/etc/systemd/system目录下创建一个etcd.service来进行后台运行。

      [Unit]
      Description=ETCD Server
      Documentation=https://github.com/coreos/etcd
      After=network-online.target
      Wants=network-online.target [Service]
      User=root
      Group=root
      ExecStart= etcd --config-file /home/etcd/etcd.conf.yml [Install]
      WantedBy=multi-user.target

      5、创建好之后可以通过以下命令来确定运行状态如下图:

      # 启动
      sudo systemctl start etcd.service
      # 查看状态
      sudo systemctl status etcd.service
      # 开机自启
      sudo systemctl enable etcd.service



      6、设置用户名和密码

      # 设置版本为V3
      export ETCDCTL_API=3
      # 添加用户
      etcdctl user add root
      # 开启认证
      etcdctl auth enable

K8S部署apisix

apisix-gateway在部署的时候分为两块,分别是apisix和apisix-dashboard面板,所以看起来比较绕,不过apisix在部署的时候使用的是yaml文件覆盖的方式,所以我这里是将yaml存储到configmap中了,方便进行统一管理。我使用的k8s是Ubuntu出品的microk8s,用它的主要原因是因为配置简单。

  • apisix是服务端,用来进行网络请求转发。
  • apisix-dashboard是他的控制面板,用来进行可视化配置。
    • apisix介绍

      apisix是基于 OpenResty + etcd 实现的云原生、高性能、可扩展的微服务 API 网关。它是国人开源,目前已经进入 Apache 进行孵化。APISIX 通过插件机制,提供了动态负载平衡、身份验证、限流限速等等功能,当然我们也可以自己开发插件进行拓展。

      • 动态负载均衡:跨多个上游服务的动态负载均衡,目前已支持 round-robin 轮询和一致性哈希算法。
      • 身份验证:支持 key-auth、JWT、basic-auth、wolf-rbac 等多种认证方式。
      • 限流限速:可以基于速率、请求数、并发等维度限制。
    • 部署apisix

      1、创建apisix.conf.yaml,并存储到configmap中,

      apisix:
      node_listen: 9080 # APISIX listening port
      enable_ipv6: false allow_admin: # http://nginx.org/en/docs/http/ngx_http_access_module.html#allow
      - 0.0.0.0/0 # We need to restrict ip access rules for security. 0.0.0.0/0 is for test. admin_key:
      - name: "admin"
      key: edd1c9f034335f136f87ad84b625c8f1
      role: admin # admin: manage all configuration data
      # viewer: only can view configuration data
      - name: "viewer"
      key: 4054f7cf07e344346cd3f287985e76a2
      role: viewer enable_control: true
      control:
      ip: "0.0.0.0"
      port: 9092 etcd:
      host: # supports defining multiple etcd host addresses for an etcd cluster
      - "http://192.168.31.170:2379"
      user: "root" # ignore etcd username if not enable etcd auth
      password: "root" # ignore etcd password if not enable etcd auth discovery:
      nacos:
      host:
      - "http://47.100.213.49:8848"
      prefix: "/nacos/v1/"
      fetch_interval: 30 # default 30 sec
      weight: 100 # default 100
      timeout:
      connect: 2000 # default 2000 ms
      send: 2000 # default 2000 ms
      read: 5000 # default 5000 ms plugin_attr:
      prometheus:
      export_addr:
      ip: "0.0.0.0"
      port: 9091 plugins:
      - client-control
      - ext-plugin-pre-req
      - zipkin
      - request-id
      - fault-injection
      - serverless-pre-function
      - batch-requests
      - cors
      - ip-restriction
      - ua-restriction
      - referer-restriction
      - uri-blocker
      - request-validation
      - openid-connect
      - wolf-rbac
      - hmac-auth
      - basic-auth
      - jwt-auth
      - key-auth
      - consumer-restriction
      - authz-keycloak
      - proxy-mirror
      - proxy-cache
      - proxy-rewrite
      - api-breaker
      - limit-conn
      - limit-count
      - limit-req
      - gzip
      - server-info
      - traffic-split
      - redirect
      - response-rewrite
      - grpc-transcode
      - prometheus
      - echo
      - http-logger
      - sls-logger
      - tcp-logger
      - kafka-logger
      - syslog
      - udp-logger
      - serverless-post-function
      - ext-plugin-post-req stream_plugins:
      - ip-restriction
      - limit-conn
      - mqtt-proxy

      2、使用kubectl命令创建configmap

      kubectl create configmap sukt-apisix-gateway-config --from-file=config.yaml=/home/sukt-platform/apisix/apisix-gateway-config.yaml -n sukt-platform

      3、新建apisix-deployment.yaml

      apiVersion: apps/v1
      kind: Deployment
      metadata:
      name: sukt-apisix-gateway
      namespace: sukt-platform
      spec:
      selector:
      matchLabels:
      app: sukt-apisix-gateway
      template:
      metadata:
      labels:
      app: sukt-apisix-gateway
      spec:
      containers:
      - name: sukt-apisix-gateway
      image: apache/apisix:2.10.3-alpine
      imagePullPolicy: IfNotPresent
      resources:
      limits:
      cpu: 500m
      memory: 1Gi
      requests:
      cpu: 250m
      memory: 256Mi
      securityContext:
      privileged: false
      terminationMessagePath: /dev/termination-log
      terminationMessagePolicy: File
      volumeMounts:
      - mountPath: /usr/local/apisix/conf/config.yaml
      name: config
      subPath: config.yaml
      ports:
      - containerPort: 9080
      - containerPort: 9443
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
      volumes:
      - configMap:
      defaultMode: 420
      name: sukt-apisix-gateway-config
      name: config

      4、新建apisix-service.yaml

      apiVersion: v1
      kind: Service
      metadata:
      name: sukt-apisix-gateway-nodetype
      labels:
      app: sukt-apisix-gateway-nodetype
      namespace: sukt-platform
      spec:
      type: NodePort
      selector:
      app: sukt-apisix-gateway
      ports:
      - port: 9080
      name: transfer1
      targetPort: 9080
      nodePort: 30107
      - port: 9443
      name: transfer2
      targetPort: 9443
      nodePort: 30108
    • 部署apisix-dashboard

      1、创建apisix-dashboard-config.yaml,并存储到configmap中,

      #
      # 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.
      # conf:
      listen:
      host: 0.0.0.0 # `manager api` listening ip or host name
      port: 9000 # `manager api` listening port
      allow_list: # If we don't set any IP list, then any IP access is allowed by default.
      - 0.0.0.0/0
      etcd:
      endpoints: # supports defining multiple etcd host addresses for an etcd cluster
      - "http://192.168.31.170:2379"
      # yamllint disable rule:comments-indentation
      # etcd basic auth info
      username: "root" # ignore etcd username if not enable etcd auth
      password: "root" # ignore etcd password if not enable etcd auth
      mtls:
      key_file: "" # Path of your self-signed client side key
      cert_file: "" # Path of your self-signed client side cert
      ca_file: "" # Path of your self-signed ca cert, the CA is used to sign callers' certificates
      # prefix: /apisix # apisix config's prefix in etcd, /apisix by default
      log:
      error_log:
      level: warn # supports levels, lower to higher: debug, info, warn, error, panic, fatal
      file_path:
      logs/error.log # supports relative path, absolute path, standard output
      # such as: logs/error.log, /tmp/logs/error.log, /dev/stdout, /dev/stderr
      access_log:
      file_path:
      logs/access.log # supports relative path, absolute path, standard output
      # such as: logs/access.log, /tmp/logs/access.log, /dev/stdout, /dev/stderr
      # log example: 2020-12-09T16:38:09.039+0800 INFO filter/logging.go:46 /apisix/admin/routes/r1 {"status": 401, "host": "127.0.0.1:9000", "query": "asdfsafd=adf&a=a", "requestId": "3d50ecb8-758c-46d1-af5b-cd9d1c820156", "latency": 0, "remoteIP": "127.0.0.1", "method": "PUT", "errs": []}
      authentication:
      secret:
      secret # secret for jwt token generation.
      # NOTE: Highly recommended to modify this value to protect `manager api`.
      # if it's default value, when `manager api` start, it will generate a random string to replace it.
      expire_time: 3600 # jwt token expire time, in second
      users: # yamllint enable rule:comments-indentation
      - username: admin # username and password for login `manager api`
      password: P@ssW0rd
      - username: user
      password: P@ssW0rd plugins: # plugin list (sorted in alphabetical order)
      - api-breaker
      - authz-keycloak
      - basic-auth
      - batch-requests
      - consumer-restriction
      - cors
      # - dubbo-proxy
      - echo
      # - error-log-logger
      # - example-plugin
      - fault-injection
      - grpc-transcode
      - hmac-auth
      - http-logger
      - ip-restriction
      - jwt-auth
      - kafka-logger
      - key-auth
      - limit-conn
      - limit-count
      - limit-req
      # - log-rotate
      # - node-status
      - openid-connect
      - prometheus
      - proxy-cache
      - proxy-mirror
      - proxy-rewrite
      - redirect
      - referer-restriction
      - request-id
      - request-validation
      - response-rewrite
      - serverless-post-function
      - serverless-pre-function
      # - skywalking
      - sls-logger
      - syslog
      - tcp-logger
      - udp-logger
      - uri-blocker
      - wolf-rbac
      - zipkin
      - server-info
      - traffic-split

      2、使用kubectl命令创建configmap

      kubectl create configmap sukt-apisix-dashboard-config --from-file=config.yaml=/home/sukt-platform/apisix/apisix-dashboard-config.yaml -n sukt-platform

      3、新建apisix-dashboard-deployment.yaml

      apiVersion: apps/v1
      kind: Deployment
      metadata:
      name: sukt-apisix-dashboard
      namespace: sukt-platform
      spec:
      selector:
      matchLabels:
      app: sukt-apisix-dashboard
      template:
      metadata:
      labels:
      app: sukt-apisix-dashboard
      spec:
      nodeName: microk8sslave1 # 部署到指定的node节点
      containers:
      - name: sukt-apisix-dashboard
      image: apache/apisix-dashboard:2.10.1-alpine
      imagePullPolicy: IfNotPresent
      resources:
      limits:
      cpu: 500m
      memory: 1Gi
      requests:
      cpu: 250m
      memory: 256Mi
      securityContext:
      privileged: false
      terminationMessagePath: /dev/termination-log
      terminationMessagePolicy: File
      volumeMounts:
      - mountPath: /usr/local/apisix-dashboard/conf/conf.yaml
      name: config
      subPath: config.yaml #这个位置对应的是comfigmap中的名字,不是 /usr/local/apisix-dashboard/conf/conf.yaml
      ports:
      - containerPort: 9000
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
      volumes:
      - configMap:
      defaultMode: 420
      name: sukt-apisix-dashboard-config
      name: config

      4、新建apisix-dashboard-service.yaml

      apiVersion: v1
      kind: Service
      metadata:
      name: sukt-apisix-dashboard-nodetype
      labels:
      app: sukt-apisix-dashboard-nodetype
      namespace: sukt-platform
      spec:
      type: NodePort
      selector:
      app: sukt-apisix-dashboard
      ports:
      - port: 9000
      name: transfer1
      targetPort: 9000
      nodePort: 30109
    • 运行效果图

      可以通过dashboard面板的系统信息查看apisix-gateway的运行信息



结语

apisix-gateway文章分为两篇,本篇只是讲解了如何在k8s中安装以及启动,下一章讲解如何进行转发以及其他功能测试等。

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