Connexion
IP aliasing is nothing but associating more than one IP address to a network interface such as eth0. For example, using the following methods, you can add an IP alias on Amazon Linux 2.
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So like many solo developers, I am tight on resources, especially money-wise. I have two AWS EC2 VMs running as WireGuard VPN on Amazon Linux for personal usage, and another one is my dev machine with Python, PHP and stuff. These are tiny VMs with just 512MB ram. The main problem is my little VM powered by CentOS or Amazon Linux 2 runs out of memory when I run "sudo yum update". The BaseOS repo from RHEL and co is just too big. It requires a minimum of 3 GB ram. So I will also get a segfault when running out of memory as described here. I believe there is a dnf bug open in RHN. So I decided to take matters into my hands and add 8GB of swap space on Amazon Linux 2 EC2 / Lightsail VM running at AWS to fix issues.
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WireGuard is an open-source, free, modern, and fast VPN with state-of-the-art cryptography. It is like OpenSSH in simplicity and uses private and public keys. Hence, it is more straightforward as compared to IPSec and OpenVPN. Initially released for the Linux kernel, it works with other operating systems. This page explains how to install and set up WireGuard VPN on Amazon Linux EC2 or Lightsail server.
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Do you want to set or update the AWS EC2 or Lightsail hostname without a reboot when using Amazon Linux 2? Here is how to set or change the hostname on Amazon Linux 2 distribution using the ssh client.
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The AWS CLI is an essential tool for developers and sysadmin to automate and interact with AWS cloud services. It is an open-source tool built on the AWS SDL for Python. As a result, you no longer need to use AWS Management Console. Instead, you can use Linux terminal and commands for managing AWS resources. Let us see how to install AWS CLI on Linux using the command-line options.
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I already wrote about setting up wildcard Let’s Encrypt SSL/TLS with AWS Route53 DNS for Nginx or Apache. One of my clients decided to use Cloudflare CDN and DNS at some point. They changed their DNS to Cloudflare. Naturally, their wildcard certificate failed because it was using Route53 DNS authentication to issue the certificate. Let us see how to convert existing or expired TLS/SSL certification renewal from AWS Route53 to Cloudflare.
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The post How To Convert AWS Route53 to Cloudflare Let’s Encrypt DNS challenge with acme.sh appeared first on nixCraft.
While working with an application, I needed PHP 7.4 and 8.0 on Amazon Linux 2 EC2 and Lightsail instance. Here is how to install PHP version 7.2/7.3/7.4 or 8.0 on Amazon Linux 2 using the yum command.
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How do I install docker and docker-compose using the yum command on Amazon Linux 2 running on the EC2 or Lightsail cloud instance?
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I am a new Amazon Linux 2 EC2 instance user. My EC2 name was set to 'ip-172-26-7-134' during instance creation. But now, I would like to change the EC2 hostname to 'stats1'. Can you tell me how do I remove ip-172-26-7-134 and set it to stats1 on Amazon Linux 2? How do I change the Amazon Linux Lightsail or EC2 cloud server instance?
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The post How to Set or Change Hostname in Amazon Linux EC2 Instance appeared first on nixCraft.
How do I integrate and configure Amazon/AWS SES with Postfix running on my FreeBSD Unix server?
The post FreeBSD configure AWS SES with Postfix MTA appeared first on nixCraft.
How do I get a wildcard TLS/SSL certificate from Let’s Encrypt using acme.sh and AWS Route53? How can I set up wildcard Let’s Encrypt SSL with AWS Route53 for Nginx or Apache?
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When I install s3cmd package on my FreeBSD system and try to use the s3cmd command I get the following error:
ERROR: Test failed: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1091)
How do I fix this problem on FreeBSD Unix system?
The post ERROR: Test failed: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1091) appeared first on nixCraft.
How do I create a new MySQL user and grant permissions in AWS RDS cloud service from the Linux command line?
The post How to create MySQL user and grant permissions in AWS RDS appeared first on nixCraft.
How do I configure Amazon SES With Postfix mail server to send email under a CentOS/RHEL/Fedora/Ubuntu/Debian Linux server?
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I need to get public IPv4 address on current EC2 or Lightsail VM Linux/Unix instance. How do I find Public IP address AWS EC2 or Lightsail VM?
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How do I install Linux, nginx, MySQL, PHP (LEMP) stack on Amazon Linux AMI running on AWS?
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How do I set up a basic iptables firewall on Amazon Linux AMI running on EC2 or Lightsail instance?
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I am a new user of Amazon Linux AMI operating system. How do I install htop on Amazon Linux AMI using the yum command?
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How do I install mysql command for management Amazon RDS or Managed Databases for Amazon Lightsail on Amazon Linux AMI?
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I would like to update installed packages for security on Amazon Linux AMI server running in the cloud. How can I update my Amazon Linux AMI system using yum command?
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