Can anyone know Is there a way to execute a script when chromecast is turned on?
Any startup Url can be configured anywhere?
No, there is no such a thing for chromecast
I wouldn't say this it's not possible, it just won't be easy or robust. For instance, you could create a DHCP reservation for your Chromecast on your DHCP server (likely a home router). Then you could write a script that would ping that IP continuously, then when it get's a response a script would be ran.
Related
I have the following problem: I am using sensu to monitor some raspberry pis. Im using standalone checks which works just fine. Now sometimes it might happen that one of the pis lost its wifi connection or just gets restarted manual and dhcp fails or for some other reason has no internet connection. The idea is to let the pi check it self for a internet connection and if the check fails it should solve the problem by it self like restarting wifi or reboot the pi.
Of course a simple bash script with a cronjob should do the job but I want to do the check with sensu. The problem is obvious if the check fails i don't have a internet connection and therefore can't send the check result to the sensu server.
Long story short ;) is it possible to implement something like the remediation feature just on the client? So that a handler on the client it self starts the script which should resolve the problem.
I don't think this is possible. Standalone checks are scheduled by the client but the check result us still published to the server. The result is then handled by the handler which resides on the server.
You could write a standalone "check" plugin which monitors the wifi and if it is off then it will turn it on. It isn't using a handler though.
I don't have my own web server. Is it possible to write a bot that will fill out a webpage form without a server? If not, can I use my localhost to do it? What are my [free] options?
It is indeed possible, you can just run the bot using your own machine as a server, as long as it has an internet connection. The only catch with this is that you'll obviously have to keep your machine on and connected to keep the bot running.
I'm not exactly sure what your trying to do, but you can use XAMPP to host a local server on your computer.
I have one Batch job on one server which is intern calling the service on the other server.
The issue is-(we suspect)the batch job is unable to call the service,but we are not very sure.
How to ensure that service is not getting called from the network point of view.
we checked telnet between the two servers which is fine.
Is this the only way to troubleshoot?
note: we can not do the code level changes now.
You could make use of tools like wireshark or
tcpdump to capture the network traffic and see that your script is indeed sending o/g requests.
I have written a small client server socket application. It is a proof of concept for some socket programming that I want to apply to a much bigger project.
For the moment I want to user wireshark to analyse the traffic that goes between them. They are both running on my local machine.
I have installed a loopback interface, and have tried to use wireshark with it.
No joy. Any ideas?
I have successfully analysed traffic between my machine and other machines no problems.
I have had a look here,
http://wiki.wireshark.org/CaptureSetup/Loopback
And I am not using the address 127.0.0.1 which they mention saying you can't capture traffic on 127.0.0.1
Thanks.
You might try creating a virtual machine to run your application and using wireshark on it.
Save yourself some grief and download Microsoft Network Monitor.
As good as Wireshark is on Unixen, Windows is a "special" case :)
I am writing a script that powers on a system via network. And then i need to run a few commands on the other host. How do I know whether the system has powered on?
My programming language is Perl and the target host is RHEL5.
Is there any kernel interrupt or network boot information that indicates the system has powered on and the os has loaded?
[In a different scenario] I was also wondering just in case if i just switch on my Machine manually. when is it exactly said to have powered on. and when is the OS is supposed to have booted completely for a network related operation such as executing a network command there. What if the system is on DHCP how would a remote system then search for this machine [i guess it is possible via mac address. but if i am wrong ].
If I have missed out any info please feel free to ask me. If you have any suggestions to make the task easier please surface them :)
thanx
imkin
Well, I'd say the system is booted when it can perform the request you've made of it. That is, the sshd daemon is running. That's booted sufficiently for your purposes (I assume - substitute for whatever daemon you really need).
So, I'd send the power-on signal, and check back every 15-30 seconds to see if I could connect. If I've failed to connect within whatever is a reasonable time for that machine (2 minutes or 5 minutes or whatever), then I'd send an alert to the IT support team. Well, I'd send it to myself first, and only once I've investigated a few failures or so and found them to all be legitimate would I start sending it directly to IT.
DHCP is kind of a different question. You'd have to start learning about broadcasting, or having a daemon on that machine "call home" during boot to register its current IP address. And it would have to "call home" every time a DHCP renewal changed its IP address. This is decidedly more convoluted. Try to avoid DHCP on such server machines if at all possible.
On the rebooting machine you can install a script in your crontab with the special #reboot assertion (see man 5 crontab). That script could send a notification of some kind to the other machine, notifying it that it's up now.
I think checking for sshd sounds like a good approach.
As for the DHCP problem: if the other computer is on the same subnet you can look it up by MAC address using Net::ARP.
How about adding a script to the remote machine which gets run on startup to have it tell you when it is ready.