def METHOD_NAME(self):
    if self.released: return
    self.released = True
    for p in self.processes:
        if p.released: continue
        try:
            p.kill()
            p.wait()
        except:
            pass
        finally:
            p.METHOD_NAME()
    for name, db in self.ipdbs.items(): db.METHOD_NAME()
    for ns in self.namespaces: ns.remove()