Vegetable planting Schedule – Karachi, Pakistan

English Name	Urdu Name	Sowing Time	Rows X Rows(inch)	Plants X Plants(inch)	Yield/Plant	First Harvest
Arum	اروی	Feb – March	24	18		180 – 200 days
Bitter Gourd	کریلہ	Feb – March, June – July	36	12	3 kg
Bottle Gourd	کدو	Feb – March, June – July, October	36	18	4 kg
Brinjal	بینگن	Feb – March, June, Nov	30	18	2 kg	60 -70 days
Broccoli		Aug –Nov	24	12	0.75 kg	60 -80 days
Cabbage	بند گوبھی	Aug – Nov	24	12	0.75 kg	60 -100 days
Carrot	گاجر	Sep – Oct	18	2	130 gm	60 -80 days
Cauliflower	پھول گوبھی	June – Oct	24	12	850 gm	60 -80 days
Celery		Sep – Oct	12	4	100 gm	100 – 120 days
Coriander	دھنیا	July _ Nov, Feb -April				45 -50 days
Cucumber	کھیرا	Feb – July	36	18	2.5 kg	50-70 days
Fenugreek	میتھی	Sept – Oct
Garlic	لہسن	Sept – Oct	8	4	50 gm
Ginger	ادرک	Feb – March	12	8
Hot Peppers	مرچ	Sept – Oct, Feb.	30	18	1.5 kg	50-60 days
Lettuce	سلاد پتہ	Sept – Oct	12	6
Mint	پودینہ	July – Nov, Feb -April				45-50 days
Mustard	سرسوں	Sept – Oct
Okra	بھنڈی	Feb – March, June- July	24	18	1 kg	70-90 days
Onion	پیاز	Feb-March, Sep – Oct	12	4	100 gm	150-180 days
Peas	مٹر	mid Sep-mid Nov	24	2	600 gm	50-75 days
Potato	آلو	Feb-March, Sep – Oct	24	8	1 kg	110 -150 days
Radish	مولی	July – Nov, Feb-March	18	2	120 gm	30-60 days
Spinach	پالک	June – Nov				50-80 days
Sponge gourd	توری	Feb – April, June – July	36	18	2.5 kg	60-70 days
Sweet Peppers	شملہ مرچ	Oct – Nov, February	30	18	1 kg	50-60 days
Sweet Potato	شکر قندی	Feb – March	36	18	700 gm	140-150 days
Tinda Gourd	ٹینڈا	March –April, June- July	36	18	1 kg	50-60 days
Tomato	ٹماٹر	Feb – March, Sep – Nov	30	18	2.5 kg	60-70 days
Turmeric	ہلدی	March –April, June- July	36		1 kg
Turnip	شلجم	Aug – Nov	24	3	150 gm	60-90 days

How to automatically assign Elastic Ip to AWS EC2 instances

TL;DR

Install aws-ec2-assign-elastic-ip on the target instance – make it part of the AMI.

pip install aws-ec2-assign-elastic-ip

Add the following script in user data section

#!/bin/bash
/usr/local/bin/aws-ec2-assign-elastic-ip --access-key ACCESS_KEY --secret-key SECRET_KEY --valid-ips IP

Details

For those who are interested in how this all works, lets spent some time understanding the different terminologies.

So what is Elastic Ip and why do we need one?

As per Amazon’s documentation – http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html

An Elastic IP address is a static IPv4 address designed for dynamic cloud computing. An Elastic IP address is associated with your AWS account. With an Elastic IP address, you can mask the failure of an instance or software by rapidly remapping the address to another instance in your account.

An Elastic IP address is a public IPv4 address, which is reachable from the Internet. If your instance does not have a public IPv4 address, you can associate an Elastic IP address with your instance to enable communication with the Internet; for example, to connect to your instance from your local computer.

So an Elastic IP is part of the Amazon’s account and can be assigned at will to EC2 instances. One of the use cases where I needed an Elastic Ip was hosting an application on EC2 Spot Instances. As you can imagine there is no guarantee for how long the spot instance will remain alive, a new instance would have a new IP assigned to it making it really difficult to share the connection credentials to customer.

There were two solutions to the problem

1. Use a service like DynDNS
2. Use Elastic IP – a static IP that I can assign to the new Spot Instance that comes up when my bid is same or above the current spot instance pricing.

So I configured everything and got stuck at how can I assign the Elastic IP address to my instance automatically (or as soon as the machine is up) After some searching I came across a python module named aws-ec2-assign-elastic-ip, it is a command line idempotent utility that can assign an Elastic IP from the passed in pool of IPs to the machine running the command.

This utility can easily be installed using pip

pip install aws-ec2-assign-elastic-ip

We are going to use the user data field, which is available in advanced configurations of EC2 instance to put in a cloud-init script.

Here is the script that does the trick

#!/bin/bash
/usr/local/bin/aws-ec2-assign-elastic-ip --access-key ACCESS_KEY --secret-key SECRET_KEY --valid-ips IP

Notice the full path to the utility, this makes the script more robust as it doesn’t matter whether it is part of PATH or not.