157 lines
4.3 KiB
Markdown
157 lines
4.3 KiB
Markdown
# Deis workflow
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## Deis架构
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## Deis安装部署
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首先需要部署一套kubernetes（比如minikube，GKE等，记得启用`KUBE_ENABLE_CLUSTER_DNS=true`），并配置好本机的kubectl客户端，然后运行以下脚本安装deis：
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```sh
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# install deis v2 (workflow)
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curl -sSL http://deis.io/deis-cli/install-v2.sh | bash
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mv deis /usr/local/bin/
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# install helm
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wget https://storage.googleapis.com/kubernetes-helm/helm-v2.2.1-linux-amd64.tar.gz
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tar zxvf helm-v2.2.1-linux-amd64.tar.gz
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mv linux-amd64/helm /usr/local/bin/
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rm -rf linux-amd64 helm-v2.2.1-linux-amd64.tar.gz
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helm init
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# deploy helm components
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helm repo add deis https://charts.deis.com/workflow
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helm install deis/workflow --namespace deis
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kubectl --namespace=deis get pods
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```
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## Deis基本使用
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### 注册用户并登录
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```sh
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deis register deis-controller.deis.svc.cluster.local
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deis login deis-controller.deis.svc.cluster.local
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deis perms:create newuser --admin
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```
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### 部署应用
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**注意，deis的大部分操作命令都需要在应用的目录中（即下面的`example-dockerfile-http`）。**
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```sh
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git clone https://github.com/deis/example-dockerfile-http.git
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cd example-dockerfile-http
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docker build -t deis/example-dockerfile-http .
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docker push deis/example-dockerfile-http
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# create app
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deis create example-dockerfile-http --no-remote
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# deploy app
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deis pull deis/example-dockerfile-http:latest
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# query application status
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deis info
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```
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扩展应用
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```sh
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$ deis scale cmd=3
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$ deis ps
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=== example-dockerfile-http Processes
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--- cmd:
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example-dockerfile-http-cmd-4246296512-08124 up (v2)
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example-dockerfile-http-cmd-4246296512-40lfv up (v2)
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example-dockerfile-http-cmd-4246296512-fx3w3 up (v2)
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```
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也可以配置自动扩展
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```sh
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deis autoscale:set example-dockerfile-http --min=3 --max=8 --cpu-percent=75
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```
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这样，就可以通过Kubernetes的DNS来访问应用了（配置了外网负载均衡后，还可以通过负载均衡来访问服务）：
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```sh
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$ curl example-dockerfile-http.example-dockerfile-http.svc.cluster.local
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Powered by Deis
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```
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### 域名和路由
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```sh
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# 注意设置CNMAE记录到原来的地址
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deis domains:add hello.bacongobbler.com
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dig hello.deisapp.com
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deis routing:enable
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```
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这实际上是在deis-router的nginx配置中增加了 virtual hosts ：
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```
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server {
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listen 8080;
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server_name ~^example-dockerfile-http\.(?<domain>.+)$;
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server_name_in_redirect off;
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port_in_redirect off;
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set $app_name "example-dockerfile-http";
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vhost_traffic_status_filter_by_set_key example-dockerfile-http application::*;
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location / {
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proxy_buffering off;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $remote_addr;
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proxy_set_header X-Forwarded-Proto $access_scheme;
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proxy_set_header X-Forwarded-Port $forwarded_port;
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proxy_redirect off;
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proxy_connect_timeout 30s;
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proxy_send_timeout 1300s;
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proxy_read_timeout 1300s;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_pass http://10.0.0.224:80;
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}
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}
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server {
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listen 8080;
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server_name hello.bacongobbler.com;
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server_name_in_redirect off;
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port_in_redirect off;
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set $app_name "example-dockerfile-http";
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vhost_traffic_status_filter_by_set_key example-dockerfile-http application::*;
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location / {
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proxy_buffering off;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $remote_addr;
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proxy_set_header X-Forwarded-Proto $access_scheme;
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proxy_set_header X-Forwarded-Port $forwarded_port;
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proxy_redirect off;
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proxy_connect_timeout 30s;
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proxy_send_timeout 1300s;
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proxy_read_timeout 1300s;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_pass http://10.0.0.224:80;
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}
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}
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```
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### 参考文档
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- https://github.com/deis/workflow
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- https://deis.com/workflow/
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