Recent Web Posts from Tech Monger

Postgres ODBC with Mutual SSL in Informatica

2020-11-02T17:50:04.895595Z

Encryption has become security norm and communicating with databases on insecure network should not be an exception to this norm. In this tutorial we will learn how to connect to postgres database using ODBC connection which is configured to use 2 way SSL connection.

Script to Recover Web Application After Crash

2019-06-14T13:54:00.029529Z

So you have web application running in production but it goes down unexpectedly and you get midnight calls to take up application. In this post we will build simple script that will recover web application after server crash due to over resource utilization.

Solving Scrapy User timeout caused connection failure

2018-11-20T07:06:50.542649Z

If the website you are scraping is not responding to your requests then your spider would report failure due to request timeout and throw following error.

Custom Validation Messages with WTForms

2018-11-11T09:18:28.423182Z

While using WTF or Flask-WTF for the form validation you would often find yourself adding custom validation messages according to the requirement of your web application. You can always use WTF's ValidationError API however in this tutorial we will show you clever hack to add validation messages during page rendering. We will show example code with flask but you can use this method with any other framework which is using WTF for form validation.

Scrapy Random Fake User Agent Example

2018-10-19T19:16:03.373783Z

If sites you are crawling with scrapy dont respond to your request then you should use randomly generated user agent in your request. Scrapy Fake User Agent is one of the open source and useful extension which will help you evade bot detection programs easily.

Apache Configuration - Lets Encrypt SSL Certficates

2018-08-25T17:37:12.906153Z

If you have installed letsencrypt ssl certficate via cerbot client on apache webserver then certbot program must have made configuration changes on your apache webserver.

How to Auto Renew Let's Encrypt Certificates

2018-08-24T16:27:10.332985Z

If you have ever setup free ssl certificates provided by let's encrypt for your site then it is of utmost importance to auto renew certificates or else visitors will get greeted with nasty ssl security exception error. Let's encrypt SSL certificates will get expired after 90 Days of installation and you must renew it before it get expired. If you have installed certificates using certbot then it must have already created cronjob to auto renew certificates. For custom installation you can create similar cronjob too. Lets learn how certbot's auto renew job works.

Wordpress - Free Letsencrypt SSL Certficate

2018-08-25T17:40:16.171899Z

In this tutorial we will enable https on wordpress site. We will install letsencrypt ssl certificate using EFF's Certbot client. We will perform installation on wordpress vm hosted on google cloud. However you can follow the same steps for your self hosted wordpress setup.

Host Wordpress on Google Cloud for Free

2018-08-24T16:39:26.630317Z

In this article we will teach you on how to setup Wordpress on google cloud's f1 compute instance. F1 Instance will provide 744 free hours per month which is equivalent to free hosting. If you have google cloud credits then you can utilize those as well. You can also avail this free tire limit to host static website on google cloud.

Let's Encrypt - Free SSL Certificate for Google Cloud VM

2018-08-25T17:43:22.736552Z

In this tutorial we will make use of free ssl certificate provided by Lets Encrypt to make website secure by enabling HTTPS. We will install certificate provided by lets encrypt using EFF's certbot client.

Host Static Website on Google Cloud for Free

2018-08-23T09:00:05.989057Z

In this tutorial we will publish static website on google cloud for free. We will use f1 micro instance on google compute engine to get free hosting. Google provides 744 free hours per month for the f1 compute engine instance which will be same as one month of free hosting. We assume that you have working google account and have signed up for google cloud. Please follow these steps to host your static site on Google VM.