4小时Dapr+.NET 5 +K8S 的实战  https://ke.qq.com/course/4000292?tuin=1271860f

Dapr进阶虚拟机集群实战(非K8S) https://ke.qq.com/course/4002149?tuin=1271860f

                   

前面我们说了在单机模式下和K8S集群下的Dapr实战,这次我们来看看如何在不使用K8S的情况下,在一个传统的虚拟机集群里来部署Dapr。

1.环境准备

我们准备两台centos7虚拟机

Dapr1:192.168.43.131

Dapr2:192.168.43.132

2.Dapr CLI安装

分别在Dapr1和Dapr2两台虚机上安装Dapr CLI

方式1 wget命令安装

wget -q https://raw.githubusercontent.com/dapr/cli/master/install/install.sh -O - | /bin/bash

方式2 二进制方式手动安装
从https://github.com/dapr/cli/releases下载Dapr脚手架,并解压后放入/usr/local/bin目录

tar -xzvf dapr_linux_amd64.tar.gz

mv dapr /usr/local/bin

3.Dapr初始化

在Dapr1和Dapr2两台虚机上初始化,不依赖Docker的情况下课通过指定--slim选项来启动

dapr init --slim

初始化好之后查看~/.dapr文件夹下的文件夹与文件,其中bin文件夹存放着daprd,dashboard,placement三个可执行文件

[root@localhost ~]# ll ~/.dapr
总用量 4
drwxrwxrwx 3 root root  64 10月 15 10:37 bin
drwxrwxrwx 2 root root  29 10月 15 15:33 components
-rw-r--r-- 1 root root 224 10月 15 18:34 config.yaml
[root@localhost ~]# ll ~/.dapr/bin/
总用量 135632
-rwxrwxrwx 1 root root 94117888 10月 15 11:08 daprd
-rwxrwxrwx 1 root root 30007296 10月 15 11:08 dashboard
-rwxrwxrwx 1 root root 14761984 10月 15 11:07 placement
drwxr-xr-x 3 root root       18 10月 15 11:08 web

4.部署项目

我们仍然采用之前的FrontEnd和BackEnd项目,在Dapr1与Dapr2两台机器上分别部署BackEnd,使其实现负载

 发布FrontEnd和BackEnd,选择完全发布模式,这样我们不需要安装dotnet core运行时即可直接运行FrontEnd与BackeEnd,并选择linux-x64目标运行时

 发布完成后,将BackEnd上传到Dapr1和Dapr2两台机器动;将FrontEnd上传到Dapr2

5.运行BackEnd和FrontEnd

Dapr1上和Dapr2上启动BackEnd

chmod 777 /usr/local/src/backend/BackEnd
dapr run --dapr-http-port 3511 --app-port 5000 --app-id backend  /usr/local/src/backend/BackEnd

Dapr2上启动FrontEnd

chmod 777 /usr/local/src/frontend/FrontEnd
dapr run --dapr-http-port 3501 --app-port 5001  --app-id frontend  /usr/local/src/frontend/FrontEnd

6.调用FrontEnd接口Dapr/ip验证

发现每次调用获取的ip不一致,已经通过mDNS实现负载

 

7.自定义组件

我们在Dapr1和Dapr2两台机器上的~/.dapr/components文件夹中分别新建文件statestore.yaml

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: statestore
spec:
  type: state.redis
  version: v1
  metadata:
  - name: redisHost
    value: 192.168.43.102:6379
  - name: redisPassword
    value: "123456"
  - name: actorStateStore
    value: "true"

重新启动FrontEnd,调用api/State接口,发现组件设置成功

8.Actors使用

因为我们初始化时指定了--slim选项,这种模式下placement需要我们手动启动,我们启动FrontEnd中的~/.dapr/bin/placement

[root@localhost ~]# ~/.dapr/bin/placement
INFO[0000] starting Dapr Placement Service -- version 1.4.3 -- commit a8ee30180e1183e2a2e4d00c283448af6d73d0d0  instance=localhost.localdomain scope=dapr.placement type=log ver=unknown
INFO[0000] log level set to: info                        instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0000] metrics server started on :9090/              instance=localhost.localdomain scope=dapr.metrics type=log ver=1.4.3
INFO[0000] Raft server is starting on 127.0.0.1:8201...  instance=localhost.localdomain scope=dapr.placement.raft type=log ver=1.4.3
INFO[0000] placement service started on port 50005       instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0000] Healthz server is listening on :8080          instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0001] cluster leadership acquired                   instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0001] leader is established.                        instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0004] Start disseminating tables. memberUpdateCount: 1, streams: 1, targets: 1, table generation: 1  instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3
INFO[0004] Completed dissemination. memberUpdateCount: 1, streams: 1, targets: 1, table generation: 1  instance=localhost.localdomain scope=dapr.placement type=log ver=1.4.3

重新启动FrontEnd与BackEnd,并调用api/ActorsClient/123,Actors环境启动成功

9.Consul名字解析组件

前面的负载我们使用了mDNS,官方还为我们提供了Consul名字解析组件,我们新建一个虚拟机Consul(192.168.43.133)来安装Consul

1.下载
wget https://releases.hashicorp.com/consul/1.3.0/consul_1.3.0_linux_amd64.zip
2.解压
unzip  consul_1.3.0_linux_amd64.zip
3.拷贝到/usr/local/bin
mv consul /usr/local/bin
4.验证
consul
5.启动
consul agent -dev -ui -node=consul-dev -client=192.168.43.133
6.访问192.168.43.133:8500

 

 下面修改Dapr1和Dapr2机器上的~/.dapr/config.yaml配置,让其使用Consul来解析名字

apiVersion: dapr.io/v1alpha1
kind: Configuration
metadata:
  name: daprConfig
spec:
  nameResolution:
    component: "consul"
    configuration:
      client:
        address: "192.168.43.133:8500"
      selfRegister: true

重启FrontEnd与BackEnd并调用api/Dapr/ip接口,发现只能调用到后启动的BackEnd,无法实现负载

 

 针对这个问题我向dapr官方提了issue,静等回复

https://github.com/dapr/components-contrib/issues/1199

posted on 2021-10-17 10:57  chester·chen  阅读(2285)  评论(2编辑  收藏  举报