Week 5 of Configuration Management Systems course.
Course material: https://terokarvinen.com/2022/palvelinten-hallinta-2022p2/
Environment: My Windows 10 PC with plenty of storage. VirtualBox VM running Debian 11 XFCE. VM has 4 GB of RAM and 40 GB of disk space.
Hello Windows Salt!
Objective: Write a Salt state that creates a file called “suolaikkuna.txt”.
I started by creating an init.sls file to a Salt project directory called hello-windows. (source)
> cd C:\users\valka\salt\hello-windows > New-Item -Path '.\init.sls' -ItemType File
In File Explorer, I opened init.sls in Notepad and wrote the instructions for creating the file.
I ran the Salt state with
salt-call. The flag
--file-root tells Salt to use the specified directory as root.
> salt-call --file-root=C:\Users\valka\salt --local state.apply hello-windows
I got an error. I forgot to add a colon to the Salt state.
# OLD C:/Users/valka/tmp/suolaikkuna.txt file.managed # NEW C:/Users/valka/tmp/suolaikkuna.txt: file.managed
I ran the state again. This time it was successful.
I checked that the file created was actually there.
No notes, no pen
Objective: Gather the Windows machines technical information to a text file. Optional: can you save them in JSON-format?
I used the
items state function from the
grains module to gather information. I wrote the information to a .txt file.
> salt-call --local grains.items > tech-info.txt
For the JSON format, I used
--out flag to specify the output as JSON. (source)
> salt-call --local grains.items --out=json > tech-info.txt
Knock knock. Is the TCP port open?
Objective: Find out if a port is open or closed. Try it on both Linux and Windows. Show an open and a closed port on both operating systems.
I installed netcat.
$ sudo apt-get update $ sudo apt-get install netcat
I tried connecting to ports 4505 and 4507. 4505 is a port used by Salt Master and port 4507 is, to my knowledge, not in use. (source: man nc, screenshots from the lecture, speedguide.net)
$ nc -vz 127.0.0.1 4505 Connection to 127.0.0.1 4505 port [tcp/*] succeeded! $ nc -vz 127.0.0.1 4507 nc: connect to 127.0.0.1 port 4507 (tcp) failed: Connection refused
tnc (Test-NetConnection) to connect to ports. (source: man tnc)
> tnc 127.0.0.1 -Port 4510 > tnc 127.0.0.1 -Port 4509
Port 4510 is commonly used by Microsoft Silverlight plugin which adds interactivity to browsers. (source). Port 4509 was not in use.
- Tero Karvinen: https://terokarvinen.com/2022/palvelinten-hallinta-2022p2/
- Ian Skur: https://blog.netwrix.com/2018/05/17/powershell-file-management/
- Salt project: https://docs.saltproject.io/en/latest/ref/output/all/salt.output.json_out.html
- man nc
- Screenshots from the lecture
- Speedguide: https://www.speedguide.net/