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Technologies and tools:

• Haproxy
  • Proxy setup
• nginx
  • Proxy setup
• Dockerfile
  • Install the npm

HAPROXY is to Create Proxy Server

Create the Stack:

• Deploy the Stack by specifying the stack file and name of our stack

# docker swarm init --advertise-addr <IP-Address>
# docker stack deploy -c docker-stack.yml node

#### OutPut
Creating network node_nodenet
Creating service node_proxy
Creating service node_app

List the Services in the Stack:

# docker stack ps node

OutPut

ID            NAME          IMAGE                       NODE                   DESIRED STATE  CURRENT STATE           ERROR  PORTS
lyxcfgstvtd1  node_app.1    shariftest/testswarm:04     localhost.localdomain  Running        Running 40 seconds ago
ywxbm3m1o1dk  node_proxy.1  dockercloud/haproxy:latest  localhost.localdomain  Running        Running 42 seconds ago
o89n77szaehv  node_app.2    shariftest/testswarm:04     localhost.localdomain  Running        Running 40 seconds ago
utpw6giks83n  node_app.3    shariftest/testswarm:04     localhost.localdomain  Running        Running 40 seconds ago

Scaling:

Scale our Application down to 5 replica's

# docker service scale node-app=5

Cleanup:

Remove the Stack:

#docker stack rm node 

Removing service node_proxy
Removing service node_app
Removing network node_nodenet

nginx is to Create Proxy Server

Create the Stack: Deploy the Stack by specifying the stack file and name of our stack

# docker swarm init --advertise-addr <IP-Address>
# docker stack deploy -c docker-stack.yml node

OutPut

Creating network node_nodenet
Creating service node_proxy
Creating service node_app

List the Services in the Stack:

# docker stack ps  node

OutPut:

ID            NAME          IMAGE                    NODE                   DESIRED STATE  CURRENT STATE             ERROR  PORTS
1qxrg2hazypi  node_proxy.1  nginx:latest             localhost.localdomain  Running        Preparing 12 seconds ago
wsqwy8ti7ksm  node_app.1    shariftest/testswarm:04  localhost.localdomain  Running        Running 13 seconds ago

Scaling:

• Scale our Application down to 5 replica's

# docker service scale node-app=5

Cleanup: Remove the Stack

# docker stack rm node

OutPut:

Removing service node_proxy
Removing service node_app
Removing network node_nodenet