echo c > /proc/sysrq-trigger doesn't reboot the system

Question

I am trying to change a rails value with ajax and I am having trouble. Here is what I have so far.

ajax

$(button).click(function(){
        $.ajax({
           url: '/change_value',
           type: 'GET'
    })
});

Controller

def home
  @value = 0
end

def change_value
  @value = 1
end

routes

get '/change_value', to: 'static_pages#change_value'

Thank you for all the help.

Solution

I had the similar issue on Ubuntu 16.04. This set of commands helped me:

sudo -s
kdump-config load
kdump-config unload

Comments

[kajal ojha]

please paste your .js.erb file

[filbranden]

It's probably trying to boot the kdump kernel/initrd and freezing while doing so... To troubleshoot that, you probably need to look at the console attached to the machine to see where it is failing... Is this a machine to which you have physical access to? Or a virtual machine? Or do you somehow have access to a serial console (for example, if it's a server in a colocation)?

[Mr.SrJenea]

I have a physical access to it