Deis workflow
[danger] Deis Workflow不再维护
Deis Workflow v2.18将是最后一个发行版本,后续不再维护和更新。 推荐使用 Helm 来管理Kubernetes应用。
Deis workflow是基于Kubernetes的PaaS管理平台,进一步简化了应用的打包、部署和服务发现。
Deis架构
Deis安装部署
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:
# install deis v2 (workflow)
curl -sSL http://deis.io/deis-cli/install-v2.sh | bash
mv deis /usr/local/bin/
# install helm
wget https://storage.googleapis.com/kubernetes-helm/helm-v2.2.1-linux-amd64.tar.gz
tar zxvf helm-v2.2.1-linux-amd64.tar.gz
mv linux-amd64/helm /usr/local/bin/
rm -rf linux-amd64 helm-v2.2.1-linux-amd64.tar.gz
helm init
# deploy helm components
helm repo add deis https://charts.deis.com/workflow
helm install deis/workflow --namespace deis
kubectl --namespace=deis get pods
Deis基本使用
注册用户并登录
deis register deis-controller.deis.svc.cluster.local
deis login deis-controller.deis.svc.cluster.local
deis perms:create newuser --admin
部署应用
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
)。
git clone https://github.com/deis/example-dockerfile-http.git
cd example-dockerfile-http
docker build -t deis/example-dockerfile-http .
docker push deis/example-dockerfile-http
# create app
deis create example-dockerfile-http --no-remote
# deploy app
deis pull deis/example-dockerfile-http:latest
# query application status
deis info
扩展应用
$ deis scale cmd=3
$ deis ps
=== example-dockerfile-http Processes
--- cmd:
example-dockerfile-http-cmd-4246296512-08124 up (v2)
example-dockerfile-http-cmd-4246296512-40lfv up (v2)
example-dockerfile-http-cmd-4246296512-fx3w3 up (v2)
也可以配置自动扩展
deis autoscale:set example-dockerfile-http --min=3 --max=8 --cpu-percent=75
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):
$ curl example-dockerfile-http.example-dockerfile-http.svc.cluster.local
Powered by Deis
域名和路由
# 注意设置CNMAE记录到原来的地址
deis domains:add hello.bacongobbler.com
dig hello.deisapp.com
deis routing:enable
这实际上是在deis-router的nginx配置中增加了 virtual hosts :
server {
listen 8080;
server_name ~^example-dockerfile-http\.(?<domain>.+)$;
server_name_in_redirect off;
port_in_redirect off;
set $app_name "example-dockerfile-http";
vhost_traffic_status_filter_by_set_key example-dockerfile-http application::*;
location / {
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Proto $access_scheme;
proxy_set_header X-Forwarded-Port $forwarded_port;
proxy_redirect off;
proxy_connect_timeout 30s;
proxy_send_timeout 1300s;
proxy_read_timeout 1300s;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_pass http://10.0.0.224:80;
}
}
server {
listen 8080;
server_name hello.bacongobbler.com;
server_name_in_redirect off;
port_in_redirect off;
set $app_name "example-dockerfile-http";
vhost_traffic_status_filter_by_set_key example-dockerfile-http application::*;
location / {
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Proto $access_scheme;
proxy_set_header X-Forwarded-Port $forwarded_port;
proxy_redirect off;
proxy_connect_timeout 30s;
proxy_send_timeout 1300s;
proxy_read_timeout 1300s;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_pass http://10.0.0.224:80;
}
}