How To Allow AWS IAM Users EBS Snapshot Create And Delete Access

Author: , July 29th, 2021

SUMMARY: Needed to create an AWS IAM Policy to allow a user access to create and delete EBS snapshots. This script also needed to be able to list volumes:

How To Fix aws Command Error “You must specify a region”

Author: , July 29th, 2021

I was getting error “You must specify a region” when running any aws CLI command. The fix: Using the aws command:

which will automatically add the following to the file ~/.aws/config:

You many simply edit the ~/.aws/config file yourself and append the same thing:

How To Allow IAM Users AWS CDN Read/Write Access For W3 Total Cache

Author: , July 28th, 2021

SUMMARY: Needed to create an AWS IAM Policy to allow a user access to two buckets and their associated CDN’s in WordPress W3 Total Cache

How To Fix Email Service Unavailable Delivery Issues with IPv6 on Amazon Linux

Author: , July 16th, 2021

PROBLEM: Email delivery to Google was failing with a “Service Unavailable” error:

Note that the network address for the destination is shown as IPv6! That is the root cause of the issue: 1. Sendmail is sending mail from the IPv6 address instead of the IPv4 address 2. Google rejects IPv6 senders without proper reverse […]

How To Convert from AWS Instance Family t2 to t3 with Enhanced Networking on Amazon Linux 1

Author: , June 10th, 2021

I wanted to change instance type from t2 to t3, but got an error when i went to start the instance:

I found this AWS docs page: Below are the steps I need to follow on AWS Linux 1. Summary Steps Pre-flight tests on t2 modinfo ena -> see “ERROR: modinfo: could not […]

How To Expand an NVMe EBS Volumes After a Disk Resize on Amazon Linux

Author: , February 19th, 2021

First, use lsblk to see the raw partitions:

Note how the partition at 259:1 is only 20GB, while the entire disk at 259:0 is 40GB. A partition resize is required in this case.

For an EXT4 filesystem, use the resize2fs command instead:

For more information, please visit the AMW Docs:

How To Fix “IOError: [Errno 10] No child processes” When Running the aws CLI Command from Perl WWW-REST-Apid

Author: , December 3rd, 2020

Problem While running the aws cli command from a Perl async command inside apid, I go the following error:

Solution The issue turned out to be a bug in Python2.7, so I upgraded to Python3.4, then uninstalled and re-installed the aws cli software so that it used the proper Python34 version. Procedure […]

How To Install MySQL 8.0 on AWS Linux 2

Author: , November 18th, 2020

How To Upgrade Certbot, Python and PIP on AWS Linux 1

Author: , May 6th, 2020

I ran letsencrypt-auto renew and got the following error:

The solution in this article gave me the answer:

Turns out Python was old at version 2.7, so did the following also:

Also had to change the cron job script to call certbot directly instead of letsencrypt-auto : vi /root/

How To Downgrade PIP After Upgrade on Amazon Linux

Author: , March 25th, 2020

I tried upgrading pip when prompted to do so: sudo pip install –upgrade pip This worked, but removed the system install in /usr/bin/pip and replaced it with /usr/local/bin/pip – NOT GOOD! The solution is as follows: