1、安装 dapr

一、linux 离线安装

1. 安装 docker [官网]

   # 1、Run the following command to uninstall all conflicting packages:
   $ for pkg in docker.io docker-doc docker-compose \
     docker-compose-v2 podman-docker containerd runc; \
     do sudo apt-get remove $pkg; done
   
   # 2、Set up Docker's apt repository.
   # Add Docker's official GPG key:
   $ sudo apt-get update
   $ sudo apt-get install ca-certificates curl
   $ sudo install -m 0755 -d /etc/apt/keyrings
   $ sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
   $ sudo chmod a+r /etc/apt/keyrings/docker.asc
   
   # 3、Add the repository to Apt sources:
   $ echo \
    "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
    https://download.docker.com/linux/ubuntu \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
    sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
   
   # apt update
   $ sudo apt-get update
   
   # 4、Install the Docker packages.
   $ sudo apt-get install docker-ce docker-ce-cli \
     containerd.io docker-buildx-plugin docker-compose-plugin
   
   # 5、run docker
   $ sudo service docker start
   

2. 安装 dapr

   1、下载 dapr 离线包 [官网]

   # 切换root用户
   $ sudo -i
   
   # 转到根目录
   $ cd /root/
   
   # 下载离线包
   $ wget https://github.com/dapr/installer-bundle/releases/download/v1.13.0/daprbundle_linux_amd64.tar.gz
   

   2、解压

   $ tar -zvxf daprbundle_linux_amd64.tar.gz
   

   3、拷贝 dapr 至 /usr/local/bin

   # 转到解压文件夹
   $ cd daprbundle
   
   # 复制 dapr 文件
   $ cp /root/daprbundle/dapr /usr/local/bin
   

   3、初始化 dapr

   $ dapr init --from-dir .
   

   4、运行 dapr_zipkin 容器

   $ docker run --name "dapr_zipkin" --restart always -d -p 9411:9411 openzipkin/zipkin
   

   5、运行 dapr_redis 容器

   $ docker run --name "dapr_redis" --restart always -d -p 6379:6379 redislabs/rejson
   

   6、初始化 slim（可省略）

   $ dapr init --slim --from-dir .
   

3. 运行 dapr sidecar [官网]

   # 运行 sidecar
   $ dapr run --app-id myapp --dapr-http-port 3500 --log-level debug
   
   # 设置缓存
   $ curl -X POST -H "Content-Type: application/json" -d '[{ "key": "name", "value": "Bruce Wayne"}]' http://localhost:3500/v1.0/state/statestore -v
   
   # 获取缓存
   $curl http://localhost:3500/v1.0/state/statestore/name 
   

4. 卸载 dapr

   # 卸载 dapr
   $ dapr uninstall
   
   # 删除容器
   $ docker rm -f dapr_redis dapr_zipkin
   
   $ 删除 dapr 文件
   $ rm /usr/local/bin/dapr
   
   $ 删除文件夹
   $ rm -rf /root/daprbundle daprbundle_linux_amd64.tar.gz
   

二、错误&解决

1. 缓存设置

   $ curl -X POST -H "Content-Type: application/json" -d '[{ "key": "name", "value": "Bruce Wayne"}]' http://localhost:3500/v1.0/state/statestore -v
   

   1、错误日志 myapp

   DEBU[0003] api error: code = FailedPrecondition desc = state store statestore is not configured  app_id=myapp instance=root scope=dapr.runtime.http type=log ver=1.13.0
   

   2、错误响应

   {"errorCode":"ERR_STATE_STORE_NOT_CONFIGURED","message":"state store statestore is not configured","details":[{"@type":"type.googleapis.com/google.rpc.ErrorInfo","domain":"dapr.io","metadata":{"appID":"myapp"},"reason":"DAPR_STATE_NOT_CONFIGURED"}]}
   

   3、解决 [参考]

   # 创建statestore配置
   $ touch /root/.dapr/components/statestore.yaml
   
   # 打开配置
   $ vi /root/.dapr/components/statestore.yaml
   
   # 写入配置[参考](https://docs.dapr.io/getting-started/quickstarts/statemanagement-quickstart/#step-3-view-the-order-processor-outputs)
   apiVersion: dapr.io/v1alpha1
   kind: Component
   metadata:
     name: statestore
   spec:
     type: state.redis
     version: v1
     metadata:
     - name: redisHost
       value: localhost:6379
     - name: redisPassword
       value: ""
     - name: actorStateStore
       value: "true"
   

2. 待续

三、参考

1. [官网]