allow deleting of container hostname

since we allow to create a container without hostname
(we are using localhost by default then) and hostname
is marked optional in the JSONSchema of the config
we should be able to delete the hostname

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
index 79882032acfbd148b3bc9cf66735dc0a1d0c8386..cfe952f2fe168c1816e08243316d2cac1204fc55 100644 (file)
--- a/src/PVE/LXC/Config.pm
+++ b/src/PVE/LXC/Config.pm
@@ -766,8 +766,10 @@ sub update_pct_config {
                next;
            }
 
-           if ($opt eq 'hostname' || $opt eq 'memory' || $opt eq 'rootfs') {
+           if ($opt eq 'memory' || $opt eq 'rootfs') {
                die "unable to delete required option '$opt'\n";
+           } elsif ($opt eq 'hostname') {
+               delete $conf->{$opt};
            } elsif ($opt eq 'swap') {
                delete $conf->{$opt};
                PVE::LXC::write_cgroup_value("memory", $vmid,