Re: Very slow guest login

On Thu, Jan 17, 2019 at 10:58 PM Giacomo Trovato <giacomo-o6+VoJyZ4uJWk0Htik3J/[email protected]>
wrote:

> Hi Dashamir,
>
> could you please point me to how to modify the script so it can be
> executed by a cron job (during night)?
>
On /etc/cron.d/ create a file named `reset-guest-accounts` with a content
like this:
30 2 * * * root /usr/local/sbin/reset-guest-accounts.sh
Then create a script `/usr/local/sbin/reset-guest-accounts.sh` that does
the reset for all the users
and make it executable.
The script may be something like this:
```
#!/bin/bash
for user in $(ls /home/guest-accounts/); do
    cd /home/guest-accounts/$user/
    # . . . . .
    # reset commands
    # . . . . .
    cd -
done
```

Thank you very much!
>
> ---
>
> Giacomo Trovato
>
>
>
> Il 10/01/2019 14:12 Dashamir Hoxha ha scritto:
>
> On Thu, Jan 10, 2019 at 2:05 PM Dashamir Hoxha <[email protected]>
> wrote:
>
>> On Thu, Jan 10, 2019 at 1:27 PM Giacomo Trovato <giacomo-o6+VoJyZ4uJWk0Htik3J/[email protected]>
>> wrote:
>>
>>> Hi All,
>>>
>>> on my school laboratory with LTSP-MATE (server on ESXI) I've 21 fat
>>> clients that login as guest.
>>>
>> I just noticed that you are using a VMWare virtual machine. I don't know
> anything about its performance
> but a virtual machine with a virtual hard disk should be slower with disk
> operations than a real HDD.
> If you could attach a HDD to one of the 21 fat clients and make it a LTSP
> server instead, this may improve
> the performance a bit. It may be a lot of work, but this is just another
> idea.
>
>> I've the reset guest account script.
>>>
>>> The login is very slow when all the students login at the same time
>>> (also more than 5 minutes).
>>>
>>> I assume that's because the script copies at the same time all the home
>>> folders from the template.
>>>
>>> Is there any way to speedup the process?
>>>
>>> Perhaps executing the script at logout or with a chron job at night?
>>>
>> In my opinion, resetting on logout is not safe, because a client may shut
>> down abruptly,
>> without making a logout (for example if the power goes off). A nightly
>> reset with a cron job
>> is also not very safe, since there may be multiple login/logout during
>> the day.
>> It is up to you to decide whether these risks are acceptable for your
>> case, depending on your situation.
>>
>> Having said that, you may speed up a bit the process if you use `rsync`
>> for resetting, instead of `rm` and `cp`.
>>
>> Regards,
>> Dashamir
>>
>
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