Uly.me

cloud engineer

Terraform AWS S3

How to create S3 bucket via Terraform.

erraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
    }
  }
}
 
provider "aws" {
  profile = "default"
  region  = "us-east-1"
}
 
resource "aws_s3_bucket" "bucket" {
  bucket = "my-ulysses-bucket"
  acl    = "private"
 
  tags = {
    Name        = "My Ulysses bucket"
    Environment = "Dev"
  }
}
 
resource "aws_s3_bucket_public_access_block" "example" {
  bucket = aws_s3_bucket.bucket.id
  block_public_acls = true
  block_public_policy = true
  ignore_public_acls = true
  restrict_public_buckets = true
}

Wiki SSL Certificate Location

Here’s where the Wiki keeps its SSL certificate keys.

/etc/pki/tls/certs/yourdomain.crt
/etc/pki/tls/private/yourdomain.key

In some cases, SSL needs to be converted so it doesn’t prompt you for a password if you restart Apache.

Conversion

openssl rsa -in /etc/pki/tls/private/yourdomain.key.new -out /etc/pki/tls/private/yourdomain.key.new_no_pass

RPM Updates the last month

Here’s the software packages updated the last month.

rpm -qa --last | grep -w "$(date --date='1 month ago' +'%b %Y')"

Result

python-perf-3.10.0-1160.42.2.el7.x86_64       Mon 04 Oct 2021 02:16:16 AM UTC
openldap-2.4.44-24.el7_9.x86_64               Mon 04 Oct 2021 02:16:12 AM UTC
kpartx-0.4.9-135.el7_9.x86_64                 Mon 04 Oct 2021 02:16:09 AM UTC
kernel-tools-libs-3.10.0-1160.42.2.el7.x86_64 Mon 04 Oct 2021 02:16:05 AM UTC
kernel-tools-3.10.0-1160.42.2.el7.x86_64      Mon 04 Oct 2021 02:16:05 AM UTC
kernel-3.10.0-1160.42.2.el7.x86_64            Mon 04 Oct 2021 02:14:41 AM UTC
virt-what-1.18-4.el7_9.1.x86_64               Mon 04 Oct 2021 01:03:22 AM UTC
bind-export-libs-9.11.4-26.P2.el7_9.7.x86_64  Mon 04 Oct 2021 01:03:22 AM UTC
# ... truncated output

Remove an environment variable

How to remove an environment variable in Linux.

unset AWS_PROFILE

You can run env to validate if variable is still present.

env

Create Local Yum Repo

Here’s how to create a local yum repo.

Install Apache.

sudo yum install httpd
sudo systemctl start httpd
sudo systemctl enable httpd
sudo systemctl status httpd

Install the repo packages.

sudo yum install createrepo yum-utils

Create repo directories.

sudo mkdir /var/www/html/{baseos,extras,appstream,epel}

Sync the repos.

sudo yum reposync -p=/var/www/html --repoid=baseos --download-metadata
sudo yum reposync -p=/var/www/html --repoid=extras --download-metadata
sudo yum reposync -p=/var/www/html --repoid=appstream --download-metadata
sudo yum reposync -p=/var/www/html --repoid=epel --download-metadata

Create a new repo.

sudo createrepo /var/www/html/

Setup a local repo.

sudo nano /etc/yum.repos.d/local.repo

Contents of local.repo.

local-base]
name=Yum Local Base
baseurl=http://10.10.0.20:80/base
enabled=1
gpgcheck=0
[local-extras]
name=Yum Local Extras
baseurl=http://10.10.0.20:80/extras
enabled=1
gpgcheck=0
[local-appstream]
name=Yum Local Appstream
baseurl=http://10.10.0.20:80/appstream
enabled=1
gpgcheck=0
[local-epel]
name=Yum Local Epel
baseurl=http://10.10.0.20:80/epel
enabled=1
gpgcheck=0

Confirm new repo is in the repolist.

sudo yum repolist