Scratches

Blinded by Science!

SELinux Tips

Updating SELinux Permissions for Nginx ngx_modsecurity_module.so: failed to map segment from shared object: Permission Denied After installing a module in Nginx, /var/log/nginx/error.log can show ...

Posted by Scratches on June 10, 2022

Vim Tips

Open a second file within same window -ESC- :e $filename Switch back to previous buffer (‘file’) -ESC- :bn

Posted by Scratches on June 9, 2022

Jenkins Tips

Backup jobs directories with subdirectories but not builds directories tar zcvf jenkins-backup-jobs.tar.gz --exclude "builds" /var/tmp/jenkins/jobs/ Extract archive to /opt/jenkins/, stripping...

Posted by Scratches on June 7, 2022

Git Tips

Git’s HEAD pointer For me, the key to understanding how git works came when I grasped that the HEAD notation is similar to a window that can slide over a set of commits. The window can be moved to ...

Posted by Scratches on June 6, 2022

Get Size of S3 Buckets with Boto3

Get Size of S3 Buckets with Boto3 https://www.slsmk.com/getting-the-size-of-an-s3-bucket-using-boto3-for-aws/ import boto3 import datetime now = datetime.datetime.now() cw = boto3.client('cloudw...

Posted by Scratches on June 5, 2022

Curl Tips

Send ‘Host’ header to localhost with a custom value curl --header "Host: example.com localhost"

Posted by Scratches on June 4, 2022

AWS Patch Management

AWS Patch Management with SSM Use Patch Manager to patch different SSM-supported OSes. Create a patch baseline and see how it can help maintain and patch a multi-platform infrastructure. Obser...

Posted by Scratches on June 2, 2022

Use AWS CLI to build a VPC with a Bastion

Create VPC aws ec2 create-vpc --cidr-block $VPC_CIDR --tag-specifications 'ResourceType=vpc,Tags=[{Key="Name",Value="TOOLS_VPC"}]' Create Subnets aws ec2 create-subnet --availability-zone us-west...

Posted by Scratches on June 1, 2022

Resolve JavaScript error 'cannot add EventListener of null'

this was causing an error ‘cannot add EventListener of null’, until I moved the script tag in index.html to after the element I was listening for document.getElementById("submit").addEventListener...

Posted by Scratches on July 26, 2021

Combine Two Json API responses into a dict of lists

Take json response for ‘apps’ and combine it with json response for ‘branches’ Makes dictionary of app names, each with a list of app branches in a list def create_dict_appid_to_branches(): SV...

Posted by Scratches on July 22, 2021