juju deployment tryout

This project creates a virtualbox VM, managed and provisioned by vagrant.

Prerequisites

This repository uses virtualbox and sets up juju in a vagrant controlled VM
Please note that juju can use other deployment types : k8s, openstack, local LXD, ...

• Vagrant from hashicorp
• virtualbox

Set up

vagrant up

Simply issue this single command to get everything setup :

• a linux VM (8GB ram / 2CPUs), managed by vagrant
• everything provisioned in that VM : juju, ...
• deploys charms to juju : mongodb, a nodejs app, sets up relations, ...

This may take some minutes to complete, as there is a lot of things to do :)

Once everything is up and running, you should be presented with such output, summarizing all what's been installed :

Model    Controller  Cloud/Region         Version  SLA          Timestamp
default  bliqtryout  localhost/localhost  2.9.16   unsupported  01:29:10Z

App       Version  Status  Scale  Charm     Store     Channel  Rev  OS      Message
mongodb   3.6.8    active      1  mongodb   charmhub  stable    64  ubuntu  Unit is ready
node-app           active      1  node-app  local                0  ubuntu  Nodejs service started

Unit         Workload  Agent  Machine  Public address  Ports                                    Message
mongodb/0*   active    idle   0        10.21.254.62    27017/tcp,27019/tcp,27021/tcp,28017/tcp  Unit is ready
node-app/0*  active    idle   1        10.21.254.80                                             Nodejs service started

Machine  State    DNS           Inst id        Series  AZ  Message
0        started  10.21.254.62  juju-434235-0  focal       Running
1        started  10.21.254.80  juju-434235-1  focal       Running

Relation provider    Requirer             Interface            Type     Message
mongodb:database     node-app:database    mongodb              regular  
mongodb:replica-set  mongodb:replica-set  mongodb-replica-set  peer   

Here is the IP address of our node-app, deployed from this repository.
In this example, my IP is 10.21.254.80. Find yours, as every deployment is different.

Use

Just log in to you VM

vagrant ssh

Then curl your service, using IP address found at the end of provisioning.
See this repository to learn more about deployed REST service.

# Eventually display services details and find IP address
juju status --relations

# Start a container with application app-one
curl --request POST http://10.21.254.80:4000/containers -H "Content-Type: application/json" -d '{"application":"app-one"}'

# Get list of running containers
curl 10.21.254.80:4000/containers

# Stop running containers wit application app-one
curl --request DELETE http://10.21.254.80:4000/containers -H "Content-Type: application/json" -d '{"application":"app-one"}'