Configuring client limits for libvirt to avoid Denial of Service attacks

You can configure libvirt to control how many connected clients are permitted at a given time. This is done via the max_clients parameter in /etc/libvirt/libvirtd.conf, as a protection against DoS (Denial of Service) attacks from unauthenticated users.

However, when a large number of containers are started at once, or under otherwise heavy workloads, the limit of this ...