Had a hard time finding material, so here to share for other folks who are looking.
Click on the link NCA 6.5 EXAM QUESTIONS pdf file.
Category Archives: Technology
The nightmare of folder and sizes in Unix systems
Finally found a nice tool to work with folder and sizes on unix systems, it’s called ncdu:
apt list --installed | grep ncdu
ncdu/bionic,now 1.12-1 amd64 [installed]To list folder sizes just use
ncdu /example_folder/example_folderYou can exclude folders with the follwoing comand:
ncdu /example --exlude /example --exclude /example The output looks very nice and easy to understand:
ncdu 1.12 ~ Use the arrow keys to navigate, press ? for help
--- /example -------------------------------------------------------------------------------------------------------------------------------------------------
449.5 GiB [##########] /example
276.3 GiB [###### ] /example
241.9 GiB [##### ] /example
100.0 KiB [ ] /.Trash-96407336
4.0 KiB [ ] README
Its possible to navigate with the arrow keys to subfolder and etc.
Nutanix CE Edition installation issues on old DELL Servers
Writing down some issues I found during the installation of the Nutanix Community Edition on old Dell 715 and 630 Servers.
Since the controllers of this Servers does not support IT mode or Pass through I had to configure them all as RAID 0.
After that it is necessary to cancel the installation Window because the Disks are only recognized as HDDs.
To cancel the install window press Shift + R and the screen session is terminated.
After that execute the following commands in order to define the SSD disks:
killall screen
#choose the drive letters which are the SSDs on your system and execute the following command for each drive.
echo 0 > /sys/block/sd?/queue/rotationalRestart the installation with the following command:
./ce_installer && screen -rMicrostack on Ubuntu 20.04
#Install Microstack
sudo snap install microstack --beta --devmode
#Microstack
#Start with Access to LVM for attached volumes
sudo microstack init --auto --control --setup-loop-based-cinder-lvm-backend --loop-device-file-size 100
# Disable
sudo snap disable microstack
# Enable
sudo snap enable microstack
#launch new Vm instance using CentOS image and VM size 2
microstack.launch --flavor 2 CentOS --name Check_MK_TEST
#Configure this on the Host so the VMs have access to the internet
sudo iptables -t nat -A POSTROUTING -s 10.20.20.1/24 ! -d 10.20.20.1/24 -j MASQUERADE
sudo sysctl net.ipv4.ip_forward=1
sudo iptables -I FORWARD -s 10.20.20.1/24 -j ACCEPT
sudo iptables -I FORWARD -d 10.20.20.1/24 -j ACCEPT
sudo iptables -L -v -n --line-numbers
sudo iptables -L -v -n -t nat --line-numbers
#Get Admin password
sudo snap get microstack config.credentials.keystone-passwordInfrastructure as Code
Have been following this guide try-iac-ebook to know more about the latest tools to manage an Infrastructure as Code (IaC).
Most tools used currently:
-Terraform
-Ansible
-Puppet
-Salt
In order to follow the examples i have created a Linode account and they offered me 100€ to spend in 2 months, which is really enough to try all the examples.
Has been a rich experience.