Облачная экосистема

Итак, создадим образ:

essh@kubernetes-master:~/node-cluster$ cat app/server.js

const http = require('http');

const server = http.createServer(function(request, response) {

response.writeHead(200, {"Content-Type": "text/plain"});

response.end(`Nodejs_cluster is working! My host is ${process.env.HOSTNAME}`);

});

server.listen(80);

essh@kubernetes-master:~/node-cluster$ cat Dockerfile

FROM node:12

WORKDIR /usr/src/

ADD .

/app /usr/src/

RUN npm install

EXPOSE 3000

ENTRYPOINT ["node", "server.js"]

essh@kubernetes-master:~/node-cluster$ sudo docker image build -t nodejs_cluster .

Sending build context to Docker daemon 257.4MB

Step 1/6 : FROM node:12

––> b074182f4154

Step 2/6 : WORKDIR /usr/src/

––> Using cache

––> 06666b54afba

Step 3/6 : ADD ./app /usr/src/

––> Using cache

––> 13fa01953b4a

Step 4/6 : RUN npm install

––> Using cache

––> dd074632659c

Step 5/6 : EXPOSE 3000

––> Using cache

––> ba3b7745b8e3

Step 6/6 : ENTRYPOINT ["node", "server.

js"]

––> Using cache

––> a957fa7a1efa

Successfully built a957fa7a1efa

Successfully tagged nodejs_cluster:latest

essh@kubernetes-master:~/node-cluster$ sudo docker images | grep nodejs_cluster

nodejs_cluster latest a957fa7a1efa 26 minutes ago 906MB

Теперь положим наш образ в реестр GCP, а не Docker Hub, потому что мы получаем сразу приватный репозиторий с которому автоматом есть доступ у наших сервисов:

essh@kubernetes-master:~/node-cluster$ IMAGE_ID="nodejs_cluster"

essh@kubernetes-master:~/node-cluster$ sudo docker tag $IMAGE_ID:latest gcr.

io/$PROJECT_ID/$IMAGE_ID:latest

essh@kubernetes-master:~/node-cluster$ sudo docker images | grep nodejs_cluster

nodejs_cluster latest a957fa7a1efa 26 minutes ago 906MB

gcr.

io/node-cluster-243923/nodejs_cluster latest a957fa7a1efa 26 minutes ago 906MB

essh@kubernetes-master:~/node-cluster$ gcloud auth configure-docker

gcloud credential helpers already registered correctly.

essh@kubernetes-master:~/node-cluster$ docker push gcr.io/$PROJECT_ID/$IMAGE_ID:latest

The push refers to repository [gcr.