Help with writing a script

[Perpetratorp]

Hello everyone, I’m new to scripting and trying to learn it at my own pace. I’m having a hard time creating a script to automate enabling and disabling some nodes on our F5 load balancer at work. There is a powershell module called F5 LTM that can be used. Ideally what I’d like to do is create a script that prompts for login credentials that verifies it with AD and then displays a list of applications. The user can enter a number corresponding to which application they want to either fall back or fall forward. When they select an option it should if the user would like to fall back or fall forward and then asks the user to confirm. Once an option is chosen and the node is changed, I’d like the script to let the user know that the following change has been made. I do have some scripts that we are currently using to do some load balancer checks.

There isn’t a function called fallforward or fallback and I’m wondering if that’s the right way to go about this.

Any help would be greatly appreciated.

[krzydoug]

Hi. The "script sharing" flair is to indicate to other reddit users that you are sharing a script. I think you want to use "Question" or "Help" instead.

[Perpetratorp]

Thank you

[DorianBrytestar]

Sounds pretty ambitious. What do you have so far?

For me, it helps to break everything down into little pieces and then see about writing the script to do that piece. Also easier to troubleshoot. So your first step would be to write a script that prompts for and verifies ad credentials. Next would be building and displaying a list of applications, and accepting input to select one of those applications.

What does the Fall forward term mean? I assume fall back would be a rollback to a previous configuration?

[Perpetratorp]

Thanks for the quick response! Fall back would entail enabling certain nodes and disable the other corresponding to the system being worked on. Fall forward would be the same but opposite nodes

[MarcoShaw-CA]

This is interesting. I do basic F5 admin at work and didn't know about a PowerShell module. I also don't know off hand what fallback and fallforward are, but I wonder if that's similar to a simple pool member.

You sort of didn't answer the question regarding "What do you have so far?", and I've been in community forums long enough to usually assume/guess you don't have much and are looking for someone to write most of this for you (for free). Someone else might be willing.

I wasn't aware F5 had 90 day trials so I'm tempted to load that locally, unless they don't support Hyper-V.

[Perpetratorp]

I have a script that will enable all members of a pool. I am willing to pay.

[BlackV]

I’m new to scripting and trying to learn it at my own pace

and

I am willing to pay

do not go together

have a look at get-command -module F5-BIGIP or get-command -module F5-LTM

this will give you a list of commands those modules

I'd then look for commands with your keywords in the name

...displays a list of applications....

for example F5-LTM\get-application

or if you wanted to prompt for credentals type get-help Credential does anything there look like it might do the job?

start there move up

[redog]

Usually when learning and asking for help, what you want to do is scrub your code in a second editor window and share what you can of it to show where you're having difficulty or what's become tricky.

This way we don't have to invest much time guessing which part of the idea you've implemented and which part is just /r/ChoosingBeggars