title: Can kubernetes sidecar container send a unix signal to other container process?
body: <p>I wanted to understand if a sidecar container can send a unix signal to the main container process).</p>
  <p>The use-case is I have Nginx running as the main content serving app container and I want the sidecar container to receive Nginx config updates and reload Nginx by sending a signal. These two containers would be running in a single pod.</p>
  <p>PS: I don't have an environment to try this out but wanted to check if people have used such a pattern?</p>