On an EC2 instance with an EBS volume of 200GB I right-clicked the volume and chose to ‘Modify Volume’, then set a new size for the disk. On the OS (RHEL 7.6) you can check that the new size of the disk is visible with: fdisk -l lsblk Then increase the partition with: growpart /dev/nvme0n1… Read more »
Posts By: jonny
Reboot Linux Server
On a server where normal reboot commands such as ‘shutdown -r now’ are not working and if you don’t have access to an iDrac or similar the following worked: echo 1 > /proc/sys/kernel/sysrq echo b > /proc/sysrq-trigger
iptables: direct traffic from one port to an alternate port
Requirement was to run a process on a server on a new port but the original port was hard-coded into the client so we needed to redirect all traffic bound for the original port to the new port. First check the IP Forwarding is enabled. sysctl net.ipv4.ip_forward if IP forwarding is not enabled then: echo… Read more »
Accessing iDRAC 6 with IE Compatibility Mode
Had difficulty accessing an old iDRAC 6 interface with a more recent release of a web browser. Some of the drac interface shows but you get 404 error messages. The solution was accessing it via the compatability mode on IE: Then add the address of the iDRAC interface:
Bash to Python – Playing with CSV
In the past I have been too willing to use bash scripts for grepping and awking CSV files. The code snippet below is a starter for doing similar with python and while far from perfect, demonstrates calling another system command and manipulating strings:
Laravel Passport Oauth
With a basic CRUD Laravel app containing API routes I wanted to protect the API behind Oauth. So I followed the instructions on the Laravel documentation and a great video by Andre Madarang on Youtube. After following the steps of requiring passport in composer, migrating and adding the routes I was testing the oauth endpoints… Read more »
Rename Files with Python
Simple wee python script for renaming files in a directory. I had a bunch of mp4 files that had a reference code at the end rather than the front so renaming to put the reference code at the front would keep them in order e.g. myfile-m6-03.mp4 to become 6-03-myfile-m6-03.mp4 #!/usr/bin/env python from os import rename… Read more »
Offline PluralSight Videos
I wanted to watch a PluralSight course while on a flight without internet access. This might well be against the PluralSight terms and conditions so I don’t recommend doing this. I used a recent version of youtube-dl and used a recent version of python via conda: conda create -n python37 python=3.7 anaconda conda env listconda… Read more »
Installing Vault with Zookeeper
Hashicorp Vault supports several backends for secret storage. I was creating a test Vault to play with PKI certificate generation and started with installing Zookeeper After download the Vault binary and extracting it to /usr/local/sbin/vault, I created a config file at /etc/vault/config.hcl vi /etc/vault/config.hcl storage “zookeeper” { address = “127.0.0.1:2181” path = “vault/” }listener “tcp”… Read more »
Terraform with VMWare
I didn’t find much in the way of examples online for using Terraform against VMWare. So here is the .tf config that worked for me: provider “vsphere” { user = “jonny@dev” password = “CHANGEME!” vsphere_server = “192.168.1.2” allow_unverified_ssl = true }data “vsphere_datacenter” “dc” { name = “ESX Lab” }data “vsphere_datastore” “datastore” { name = “netapp002-svm001-vmaggr01-datastore001″… Read more »
