###Overview
This is an atomicapp based on Nulecule specification. This is a 2-tier application based on Flask and redis. Every time you access the web page, a message is displayed which indicates the number of times the web page was accessed. And this counter is incremented upon each access.
###Prerequisites
The redis container has a volume mounted from the host system. At the moment we
are mounting /opt/redis on /redis in the redis container. This is mainly
for the sake of persistence, in that, even if a redis container/pod is killed
and started afresh, the count is stored. For this to work, we need to apply
below SELinux context on /opt/redis on the host:
$ sudo chcon -Rt svirt_sandbox_file_t /opt/redis
This app is based on CentOS 7 image.
###Usage
####Option 1 - Interactive
Run the image with below command. It'll use kubernetes as the default
provider. It will prompt for the parameters in Nulecule file that do not have
default values.
$ [sudo] atomic run dharmit/flask_redis
####Option 2 - Unattended
Create a new directory and in that, create a file called answers.conf with
below contents:
[flask]
flaskImage = dharmit/flask:latest
NODE_PORT = 31000
[redis]
redisImage = dharmit/redis:latest
redisPath = /opt/redis
[general]
namespace = default
provider = kubernetes
Now, from the directory containting answers.conf file, run the application:
$ [sudo] atomic run dharmit/flask_redis
####Option 3 - Install and Run
You can download the application, review the Nulecule file and edit
answerfile before running the application.
-
Download the app using
atomic run IMAGE --mode fetch:[sudo] atomic run dharmit/flask_redis --mode fetch -
Rename
answers.conf.sample:mv answers.conf.sample answers.conf -
Edit
answers.conf, review the files if desired and run:[sudo] atomic run dharmit/flask_redis
###Check the app
To check the app, open http://localhost:31000 in the
web browser. If you have chosen some other value for the environment variable
NODE_PORT, use that port instead of 31000.