Step1: Install Docker :
http://unixadvice.blogspot.com/2017/06/
Step 2: Install Kubernetes :
http://unixadvice.blogspot.com/2017_07_06_archive.html
Step 3: Starting Minikube :
http://unixadvice.blogspot.com/2017_07_08_archive.html
Step 4:
Deploying your "microservice" made with Node.js
Install Node.js on your server
wget http://nodejs.org/dist/v0.10.30/node-v0.10.30.tar.gz
Extract the archive and move into the new directory by typing:
tar xzvf node-v* && cd node-v*
There are a few packages that we need to download from the CentOS repositories in order to compile the code. Use
yum to get these now:sudo yum install gcc gcc-c++
Now, we can configure and compile the software:
./configure
make
The compilation will take quite awhile (almost 40 Minutes). When it is finished, you can install the software onto your system by typing:
sudo make install
To check that the installation was successful, you can ask Node to display its version number:
node --version
v0.10.30[root@localhost node-v0.10.30]# node server.js
Received request for URL: /
Received request for URL: /favicon.ico
Go to this below link and you should be able to see : "Hello World"
http://localhost:8080/.
oot@localhost node-v0.10.30]#
[root@localhost node-v0.10.30]# vi Dockerfile
[root@localhost node-v0.10.30]# eval $(minikube docker-env)
[root@localhost node-v0.10.30]# docker build -t hello-node:v1 .
Sending build context to Docker daemon 139.8MB
Step 1 : FROM node:6.9.2
6.9.2: Pulling from library/node
75a822cd7888: Extracting [================================> ] 33.03MB/51.36MB
57de64c72267: Download complete
75a822cd7888: Extracting [================================> ] 33.55MB/51.36MBding [===============================================75a822cd7888: Extracting [=================================> ] 34.08MB/51.36MBB complete
871436ab7225: Downloading [=========
871436ab7225: Downloading [===============================================> ] 124.4MB/129.8MB
75a822cd7888: Pull complete
57de64c72267: Pull complete
4306be1e8943: Pull complete
871436ab7225: Pull complete
0110c26a367a: Pull complete
1f04fe713f1b: Pull complete
ac7c0b5fb553: Pull complete
Digest: sha256:2e95be60faf429d6c97d928c762cb36f1940f4456ce4bd33fbdc34de94a5e043
Status: Downloaded newer image for node:6.9.2
---> faaadb4aaf9b
Step 2 : EXPOSE 8080
---> Running in 2344d4a2b96b
---> 66fd396faf13
Removing intermediate container 2344d4a2b96b
Step 3 : COPY server.js .
---> 5d02c444af18
Removing intermediate container 90dd85314e64
Step 4 : CMD node server.js
---> Running in 2db4341976b8
---> 801fe2cdebe3
Removing intermediate container 2db4341976b8
Successfully built 801fe2cdebe3
[root@localhost node-v0.10.30]#
[root@localhost node-v0.10.30]# kubectl get deployments
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
hello-minikube 1 1 1 0 2d
hello-minikube2 1 1 1 1 2d
kubernetes-bootcamp 1 1 1 0 2d
mysql-minikube 1 1 1 0 12h
You have new mail in /var/spool/mail/root
[root@localhost node-v0.10.30]# kubectl run hello-node --image=hello-node:v1 --port=8080
deployment "hello-node" created
[root@localhost node-v0.10.30]#
[root@localhost node-v0.10.30]# kubectl get deployments
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
hello-minikube 1 1 1 0 2d
hello-minikube2 1 1 1 1 2d
hello-node 1 1 1 1 58s
kubernetes-bootcamp 1 1 1 0 2d
mysql-minikube 1 1 1 0 12h
[root@localhost node-v0.10.30]#
[root@localhost node-v0.10.30]# kubectl config view
apiVersion: v1
clusters:
- cluster:
certificate-authority: /root/.minikube/ca.crt
server: https://192.168.42.188:8443
name: minikube
contexts:
- context:
cluster: minikube
user: minikube
name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
user:
client-certificate: /root/.minikube/apiserver.crt
client-key: /root/.minikube/apiserver.key
[root@localhost node-v0.10.30
[root@localhost node-v0.10.30]# kubectl expose deployment hello-node --type=LoadBalancer
service "hello-node" exposed
[root@localhost node-v0.10.30]#
apiVersion: v1
clusters:
- cluster:
certificate-authority: /root/.minikube/ca.crt
server: https://192.168.42.188:8443
name: minikube
contexts:
- context:
cluster: minikube
user: minikube
name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
user:
client-certificate: /root/.minikube/apiserver.crt
client-key: /root/.minikube/apiserver.key
[root@localhost node-v0.10.30
[root@localhost node-v0.10.30]# kubectl expose deployment hello-node --type=LoadBalancer
service "hello-node" exposed
[root@localhost node-v0.10.30]#
[root@localhost node-v0.10.30]# kubectl get services
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
hello-minikube 10.0.0.103 8080:30904/TCP 2d
hello-minikube2 10.0.0.19 8080:30451/TCP 2d
hello-node 10.0.0.8 8080:30026/TCP 52s
kubernetes 10.0.0.1 443/TCP 2d
[root@localhost node-v0.10.30]# kubectl get services
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
hello-minikube 10.0.0.103 8080:30904/TCP 2d
hello-minikube2 10.0.0.19 8080:30451/TCP 2d
hello-node 10.0.0.8 8080:30026/TCP 1m
kubernetes 10.0.0.1 443/TCP 2d
[root@localhost node-v0.10.30]# minikube service hello-node
Opening kubernetes service default/hello-node in default browser...
START /bin/firefox "http://192.168.42.188:30026"
this above command will automatically launch the browser with the hello world program.
