[pve-devel] [PATCH v3 manager 2/3] cluster resources: add cgroup-mode to node properties

[Fiona Ebner <f.ebner@proxmox.com>]

so the frontend has the information readily available.

Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---

Changes from v2:
    * Add it to the new 'static-info' kv instead of being standalone.
    * Fix params for get_node_kv() call (already in previous patch).

 PVE/API2/Cluster.pm     | 13 +++++++++++++
 PVE/Service/pvestatd.pm |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/PVE/API2/Cluster.pm b/PVE/API2/Cluster.pm
index 49e319a5..dc575d85 100644
--- a/PVE/API2/Cluster.pm
+++ b/PVE/API2/Cluster.pm
@@ -323,6 +323,11 @@ __PACKAGE__->register_method({
 		    optional => 1,
 		    minimum => 1,
 		},
+		'cgroup-mode' => {
+		    description => "The cgroup mode the node operates under (when type == node).",
+		    type => 'integer',
+		    optional => 1,
+		},
 	    },
 	},
     },
@@ -427,10 +432,18 @@ __PACKAGE__->register_method({
 	    }
 	}
 
+	my $static_node_info = PVE::Cluster::get_node_kv("static-info");
+
 	if (!$param->{type} || $param->{type} eq 'node') {
 	    foreach my $node (@$nodelist) {
 		my $can_audit = $rpcenv->check($authuser, "/nodes/$node", [ 'Sys.Audit' ], 1);
 		my $entry = PVE::API2Tools::extract_node_stats($node, $members, $rrd, !$can_audit);
+
+		my $info = eval { decode_json($static_node_info->{$node}); };
+		if (defined(my $mode = $info->{'cgroup-mode'})) {
+		    $entry->{'cgroup-mode'} = int($mode);
+		}
+
 		push @$res, $entry;
 	    }
 	}
diff --git a/PVE/Service/pvestatd.pm b/PVE/Service/pvestatd.pm
index eb0dc130..2515120c 100755
--- a/PVE/Service/pvestatd.pm
+++ b/PVE/Service/pvestatd.pm
@@ -126,17 +126,22 @@ my $generate_rrd_string = sub {
 my sub broadcast_static_node_info {
     my ($cpus, $memory) = @_;
 
+    my $cgroup_mode = eval { PVE::CGroup::cgroup_mode(); };
+    syslog('err', "cgroup mode error: $@") if $@;
+
     my $old = PVE::Cluster::get_node_kv('static-info', $nodename);
     $old = eval { decode_json($old->{$nodename}) } if defined($old->{$nodename});
 
     if (
 	!defined($old->{cpus}) || $old->{cpus} != $cpus
 	|| !defined($old->{memory}) || $old->{memory} != $memory
+	|| ($old->{'cgroup-mode'} // -1) != ($cgroup_mode // -1)
     ) {
 	my $info = {
 	    cpus => $cpus,
 	    memory => $memory,
 	};
+	$info->{'cgroup-mode'} = $cgroup_mode if defined($cgroup_mode);
 	PVE::Cluster::broadcast_node_kv('static-info', encode_json($info));
     }
 }
-- 
2.30.2