Categories
Unix

How to start a httpd service when rebooting linux ?

How to make sure your service starts when you server reboot? It is practical so you do not have to ssh into your machine everytime you want to start your web server. Find below the command used for that effect

sudo chkconfig --levels 0123456 httpd on

Here explanation of levels

0   Halt
1   Single-User mode
2   Multi-user mode console logins only (without networking)
3   Multi-User mode, console logins only
4   Not used/User-definable
5   Multi-User mode, with display manager as well as console logins (X11)
6   Reboot

Make it happen – Automate things become a senior software engineer

Categories
General

How to Force/change default homepage of Laravel Nova ?

To Force the redirect of Laravel Nova I proceeded with modifications

#1 – Remove the default route definition

routes/web.php
routes/web.php

#2 – Address the ‘/nova’ path to just ‘/’

config/nova.php
config/nova.php
Categories
Technical

How to check the Health Status of your servers for free ?

It has been on my mind for a long time … How to get notified when one of my web properties go down . I found this amazing free website tool called UPTIME ROBOT – Get notified for free and stay on the top of your business

https://uptimerobot.com/

uptimerobot
uptimerobot moniotor server health

Categories
Laravel

How to force Laravel to return SSL connection calls ?

It has been a pretty long day as I was struggling to get a Laravel application to return SSL or HTTPS connections. I was put in this situation because the SysOp team of my company placed the laravel app behind a loadbalancer accepting SSL connections but converting these connection to HTTP.

It seems trivial but it did mess with the laravel application that relies on the incoming protocol to define login/logout url pages for instances

After messing up and discovering TrustProxies I found an easy solution with

Here is my solution , open the file app/Providers/AppServiceProvider.php

And add the following line URL::forceScheme('https');

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\URL;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
      URL::forceScheme('https');
    }
}
Categories
Nginx

How to configure your Nginx Virtual Host ?

Hi team, here is what to add in your nginx configuration file to resolve the desired virtual host name

 server_name example.com www.example.com;
Categories
BEST PHP CODE PHP

How to address the undefined function yaml_parse_file ?

Here are the steps when you encounter the error below, it means that the yaml library is missing as it is not native to php per say

undefined function yaml_parse_file

Install YAML library for PHP when you see the error below

yum search yaml

First step is to install yaml via pecl

pecl install yaml-2.0.0

Second step is to create the following file

/etc/php/conf.d/ext-yaml.ini

And add the following line

echo "extension=yaml.so"

Then restart php server

service php-fpm restart
Categories
BEST PHP CODE PHP

How to setup a CRON JOB for apache/httpd to restart automatically ?


Very helpful website top figure out crontab sequence

https://crontab.guru/#0_0_*_*_*

Every 30 minutes 

/etc/crontab

  */30  *  *  *  *       root /etc/init.d/httpd restart > /dev/null 2>&1

  */30  *  *  *  *       root /etc/init.d/mysql restart > /dev/null 2>&1

Every hour

/etc/crontab

  0  *  *  *  *       root /etc/init.d/httpd restart > /dev/null 2>&1

Every minute

/etc/crontab

  *  *  *  *  *       root /etc/init.d/httpd restart > /dev/null 2>&1

Check logs 

tail n- 200  /var/log/cron

tail n- 200  /var/log/messages

Plus link here regarding dev/null 2>&1

————————————————————————

Categories
Satori Architect

How to update BCC Architect Software ?

If you are confronted with the following issue with BCC Architect, the best solution is to take the latest updates available on their website https://portal.bccsoftware.com/

Error: 404 ISSUE WriteMailDatToZip MRE1=92 -2147220468 SaveReport failed to save the file “0106A220” for report 364. (error 8004040c)

Download on this page

Categories
Programming

How to Recognize Worthy Programming Tasks ?

Nowadays, IT departments have been jam-packed with a lot of nonsense and therefore a lot of Jira tickets, if you see what I mean. Here is a way to quickly assess the necessity of a task or a project to be executed. It is important to raise these questions during preliminary meetings. Once the project is launched, it will be difficult to backpedal according to my experience. Also great find in this tweet great ideas on how to tackle this question https://twitter.com/sebdedeyne/status/1271370141683638273

  • Is it going to fix something ?
  • Can we afford to break what’s already working ?
  • Do we really need to make that change ?
  • Is it going to improve performance ?

Here are the most critical questions :

  • How will this make users/customer live better ?
  • How is it going to make our developers lives better ?

Although these questions above may seem rational and logical, they can easily and will be easily swept away by some great irresponsible political bluffer developer/manager mentioning the security of a system or application. The word is dropped : Security. The winning argument, the selling point to any individual and to any of our dear IT companies, FEAR.

Although most of our infrastructure are covered with firewalls, proxies, CDN and heavy monitoring systems – I have seen Fear win the argument even if the chance of its occurring was inexistent

David Raleche

Categories
AWS AWS SQS javascript

How to setup Serverless AWS ?

For starter with AWS, Serverless Framework CLI is a must. Build your entire infrastructure in seconds !

What does AWS mean ? Amazon Web Service.

What does AWS provide ?  provides on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered pay-as-you-go basis such as hosting web server

What is Serverless framework CLI ? . A single configuration file allows you to list your functions and define the endpoints that they’re subscribed to. It provides structure, automation and best practices out-of-the-box, allowing you to focus on building sophisticated, event-driven, serverless architectures, comprised of functions and events. The Serverless Framework CLI is the simplest way to develop infinitely scalable, pay-per-execution serverless applications.

  • Big plus is the serverless.yaml creating the above structure in seconds

I built an architecture SQS, DLQ, SNS and Lambda with serverless and it is fantastic for deployment and quick development. This framework made the whole development experience smooth

What is SQS ? Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. 

What is DLQ ? You can now set a dead-letter queue (DLQ) to an Amazon Simple Notification Service (SNS) subscription to capture undeliverable messages. Amazon SNS DLQs make your application more resilient and durable by storing messages in case your subscription endpoint becomes unreachable.

What is SNS ? Amazon SNS is a fully managed pub/sub messaging service. You can use Amazon SNS topics to decouple message publishers and subscribers, and simultaneously distribute messages to multiple endpoints, such as Amazon SQS queues, AWS Lambda functions, HTTP endpoints, email addresses, and mobile devices (SMS text messages and mobile push notifications).

What is Lambda ? AWS Lambda is a serverless compute service that runs your code in response to events and automatically manages the underlying compute resources for you. 

See below some useful Links

— Tutorial to quick start with serverless —

https://www.serverless.com/framework/docs/providers/aws/guide/quick-start/

David Raleche