Gadget sigsnoop

sigsnoop traces all signals sent on the system.

The following parameters are supported:

failed: Trace only failed signal sending (default to false).
signal: Which particular signal to trace (default to all).
pid: Which particular pid to trace (default to all).
kill-only: Trace only signals sent by the kill syscall (default to false).

Example CR

apiVersion: gadget.kinvolk.io/v1alpha1
kind: Trace
metadata:
  name: sigsnoop
  namespace: gadget
spec:
  node: ubuntu-hirsute
  gadget: sigsnoop
  runMode: Manual
  outputMode: Stream
  filter:
    namespace: default

Operations

start

Start sigsnoop gadget

$ kubectl annotate -n gadget trace/sigsnoop \
    gadget.kinvolk.io/operation=start

stop

Stop sigsnoop gadget

$ kubectl annotate -n gadget trace/sigsnoop \
    gadget.kinvolk.io/operation=stop

Output Modes

Stream