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Thursday, 20. February 2020
Create config file for AWS command line tool

While creating amazon config file in a shell script, use cat with heredoc like this..

cat > myconfigfile.txt << "heredoc"
[default]
aws_access_key_id=XXX
aws_secret_access_key=XXX
region=us-east-1
heredoc

export AWS_CONFIG_FILE=./myconfigfile.txt

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setting colors in pandas

This is how to set the colors in pandas

mapper = {v: k for k, v in enumerate(colors.unique())}

ccolors.cat.reorder_categories(mapper).cat.codes

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Wednesday, 19. February 2020
log mysql output

tee output.txt
show global variables;
show engine innodb status\G
show full processlist;
show global status;
select sleep(60);
show engine innodb status\G
show full processlist;
show global status;
notee;

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Sunday, 16. February 2020
access AWS API gateway using python

Amazon API gateway allows us to host server-less API's those can talk to cloud or on-premises databases. Here is 5 lines of python code to use the API

from urllib.request import Request, urlopen

url='xxx.execute-api.ap-south-1.amazonaws.com'

q = Request(url)
q.add_header('uname', '472202986990')
data = urlopen(q).read().decode('UTF-8')

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Saturday, 15. February 2020
Using boto

In the bad old days, the glacier class used to have different layers.

import boto.glacier.layer2
l2 = boto.glacier.layer2.Layer2(aws_access_key_id='xxx', aws_secret_access_key='xxx')

Now the client is all you need!

import boto3
gc = boto3.client("glacier",
aws_access_key_id="xxx", aws_secret_access_key="xxx",)

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Thursday, 13. February 2020
backup mysql usersĀ 

3 steps to install perconal utility...

yum install perl-DBI perl-Data-Dumper perl-DBD-MySQL

wget percona.com/get/pt-show-grants

perl pt-show-grants -h 1.2.3.4 -uroot -pPasswd

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Steps to be used for generating AWS API gateway

a) Method Execution - Get Method Request - URL Query String Parameters - add a variable: cmnumber

b) Method Execution - Get Integration Request - Mapping Templates - Content-Type - application/json - Mapping template

{"mnumber": "$input.params('cmnumber')"}

"requestTemplates": {
"application/json": {
"querystring": "$input.params().querystring"
}
}

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Wednesday, 12. February 2020
apply colors to pandas

Here is how to change the color of negative values to red in pandas.

def color_negative_red(val):
color = 'red' if val < 0 else 'black'
return 'color: %s' % color

df = df.style.applymap(color_negative_red)

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Tuesday, 11. February 2020
change log file size in MySQL

Here are the steps to be followed while changing the log file size in mysql:

1) SET GLOBAL innodb_fast_shutdwn = 1;
2) Stop the mysqld server and check the end of the error log file to ensure that the shutdown was clean.
3) Move the existing log files to another location for extra safety.
4) Make the size change in the my.cnf and restart.

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Holidays in India

These are the common holidays celebrated in India (Mumbai) during 2016 - 17

08-April Friday Guddi Padwa
1-May Sunday Maharashtra Day
15-Aug Monday Independence Day
05-Sept Monday Ganesh Chaturthi
02-Oct Sunday Gandhi Jayanti
11-Oct Tuesday Dussehra
30-Oct Sunday Diwali
31-Oct Monday Lakshmi Pooja
25-Dec Sunday Christmas
26-Jan Thursday Republic Day
13-March Monday Holi


List FY 2013- 14
Gudi Padwa 11-Apr Thursday
Maharshtra Day 1-May Wednesday
Independence Day 15-Aug Thursday
Rakshabandhan 21-Aug Wednesday
Ganesh Chaturthi 9-Sep Monday
Gandhi Jayanti 2-Oct Wednesday
Dasera 14-Oct Monday
Laxmi Puja 3-Nov Sunday
New Year 4-Nov Monday
Bhai Duj 5-Nov Tuesday
Chirstmas 25-Dec Wednesday
Republic Day 26-Jan Sunday
Holi 17-Mar Monday
Gudi Padwa 31- Mar-2014 Monday

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Recent updates
Awesome! Thank you for posting
your simple and amazing steps. I followed it and enjoyed....
by masterdani2018 (2/25/20 11:46 AM)
Create config file for AWS
command line tool While creating amazon config file in a...
by shantanuo (2/20/20 6:00 AM)
setting colors in pandas This
is how to set the colors in pandas mapper =...
by shantanuo (2/20/20 5:53 AM)
log mysql output tee output.txt
show global variables; show engine innodb status\G show full processlist;...
by shantanuo (2/19/20 10:33 AM)
access AWS API gateway using
python Amazon API gateway allows us to host server-less API's...
by shantanuo (2/16/20 9:41 AM)
Using boto In the bad
old days, the glacier class used to have different layers....
by shantanuo (2/15/20 10:28 AM)
backup mysql usersĀ  3
steps to install perconal utility... yum install perl-DBI perl-Data-Dumper perl-DBD-MySQL wget...
by shantanuo (2/13/20 1:49 PM)
Steps to be used for
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by shantanuo (2/13/20 1:30 PM)
apply colors to pandas Here
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