freeleaps-ops/cluster/Guideline-For-Add-Node-To-FreeleapsK8sCluster.md

# 1. Create VM on Azure
Set key configurations according to the images below, other configurations can use default values
![img_1.png](asserts/img_1.png)
![img.png](asserts/img.png)
![img_2.png](asserts/img_12.png)
![img_4.png](asserts/img_4.png)

# 2. Login to New VM

After successfully adding a new VM on Azure, the new VM will have a Private IP

![img_5.png](asserts/img_5.png)

Login to new VM through Freeleaps bastion host

1. Login to Freeleaps bastion host
```commandline
ssh -o StrictHostKeyChecking=no -l xxxx@mathmast.com jumper.mathmast.com # Need to ask jet to add bastion host login permission and ask for SSH password

```
![img_6.png](asserts/img_6.png)

2. Login to new VM from Freeleaps bastion host

```commandline
ssh freeleaps@10.10.1.4 # Password is the one you set when adding the VM
```
![img_7.png](asserts/img_7.png)

# 3. Join New VM to Domain
> Joining domain is to ensure that you can login to the new VM using xxx@mathmast.com account

Domain joining process reference: https://learn.microsoft.com/zh-cn/entra/identity/domain-services/join-ubuntu-linux-vm

For uncertain configuration values, you can login to an already configured machine and refer to the configuration above

Key configuration values reference as follows

![img_8.png](asserts/img_8.png)

For the step below, you need to set a password for wwwadmin@MATHMAST.COM, use Freeleaps@2021 as the password
![img_9.png](asserts/img_9.png)

```commandline
# Login to new node using domain account
sudo ssh -l wwwadmin@mathmast.com 10.10.1.4
```
![img_11.png](asserts/img_11.png)

At this point, the new VM can be logged in using domain account

# 4. Add New Machine as K8s Node
> Need to execute on bastion host jumper.mathmast.com
Reference: [README.md](ansible/README.md)