Uly.me

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add

Wheel Group

Here’s an alternate way to give Linux users sudo access by adding them to the wheel group. Most Linux systems come with the wheel group already predefined. By adding users to the wheel group, they now have the ability to sudo and run root commands. The wheel group is in the sudoers file for Redhat, Centos, Debian and Ubuntu.

usermod -aG wheel username

AWS IAM Tag User

Here’s how to add tags to an existing user.

aws iam tag-user \
--user-name ulysses \
--tags "Key"="dept","Value"="it" "Key"="role","Value"="admin"

Tags with identical keys are overwritten. New keys are added.

GCP ILB Issue Targets Not Healthy

I ran into an issue with Google Compute Engine TCP internal load balancer. The targets are unhealthy although all configs were correct installed. At one time the targets were working, but somehow they became unhealthy. In the end, 3 things needed to be checked.

  1. Make sure GCP’s guest environment is installed.
  2. Add the internal load balancer VIP address to the network properties.
  3. Add route via cmd. “route ADD VIP MASK 255.255.255.255”

You will need to change the server’s IP from DHCP to static to add ILB VIP.

Windows Route Add

Here’s how to add a route in Windows. Open CMD as Administrator.

route add 10.10.10.10 mask 255.255.255.0 10.10.10.254

To make it persistent, add -p.

route add 10.10.10.10 mask 255.255.255.0 10.10.10.254

To display. Specifies IP 4 only.

route print -4

GCP Create Filestore

GCP Cloud Filestore is a managed file storage service for applications that require a filesystem interface and a shared filesystem for data. Filestore gives users a simple, native experience for standing up managed Network Attached Storage (NAS) with their Google Compute Engine and Kubernetes Engine instances.

With that said, let’s build one.

gcloud filestore instances create nfs-server \
  --project=[PROJECT_ID] \
  --zone=us-central1-c \
  --tier=STANDARD \
  --file-share=name="vol1",capacity=1TB \
  --network=name="default"

How to mount the filestore on clients.

sudo apt-get -y update
sudo apt-get -y install nfs-common
sudo mkdir /mnt/test
sudo mount 10.0.0.2:/vol1 /mnt/test
sudo chmod go+rw /mnt/test

Increase capacity to 3TB.

gcloud filestore instances update nfs-server 
  --project=myproject 
  --zone=us-central1-c 
  --file-share=name="vol1",capacity=3TB

AWS CLI Add User

Here’s how to add an AWS user using the CLI.

aws iam create-user --user-name john.doe \
--tags Key='Name',Value='John Doe' Key='Role',Value='Admin'

Create an access key for the user.

aws iam create-access-key --user-name john.doe