Digging into this a bit more, it looks like the libvirtd.service file needs to be changed to enable the tcp listener instead of using the /etc/default/libvirtd config file. Would be nice if the service had the tcp option (commented out by default)
My changes were to Remove $libvirtd_opts because any setting here causes the service to fail at startup. Add Wants=libvirtd-tcp.socket and Also=libvirtd-tcp.socket [Unit] Description=Virtualization daemon Requires=virtlogd.socket Requires=virtlockd.socket # Use Wants instead of Requires so that users # can disable these three .socket units to revert # to a traditional non-activation deployment setup Wants=libvirtd.socket Wants=libvirtd-ro.socket Wants=libvirtd-tcp.socket Wants=libvirtd-admin.socket Wants=systemd-machined.service Before=libvirt-guests.service After=network.target After=dbus.service After=iscsid.service After=apparmor.service After=local-fs.target After=remote-fs.target After=systemd-logind.service After=systemd-machined.service After=xencommons.service Conflicts=xendomains.service Documentation=man:libvirtd(8) Documentation=https://libvirt.org [Service] Type=notify EnvironmentFile=-/etc/default/libvirtd ExecStart=/usr/sbin/libvirtd $libvirtd_opts #ExecStart=/usr/sbin/libvirtd -l -d ExecReload=/bin/kill -HUP $MAINPID KillMode=process Restart=on-failure # At least 1 FD per guest, often 2 (eg qemu monitor + qemu agent). # eg if we want to support 4096 guests, we'll typically need 8192 FDs # If changing this, also consider virtlogd.service & virtlockd.service # limits which are also related to number of guests LimitNOFILE=8192 # The cgroups pids controller can limit the number of tasks started by # the daemon, which can limit the number of domains for some hypervisors. # A conservative default of 8 tasks per guest results in a TasksMax of # 32k to support 4096 guests. TasksMax=32768 # With cgroups v2 there is no devices controller anymore, we have to use # eBPF to control access to devices. In order to do that we create a eBPF # hash MAP which locks memory. The default map size for 64 devices together # with program takes 12k per guest. After rounding up we will get 64M to # support 4096 guests. LimitMEMLOCK=64M [Install] WantedBy=multi-user.target Also=virtlockd.socket Also=virtlogd.socket Also=libvirtd.socket Also=libvirtd-ro.socket Also=libvirtd-tcp.socket -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1960937 Title: Libvirtd on 20.04 does not listen on port 16509 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1960937/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
