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

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

so the frontend has the information readily available.

Suggested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
---
 PVE/API2/Cluster.pm     | 12 ++++++++++++
 PVE/Service/pvestatd.pm | 11 +++++++++++
 2 files changed, 23 insertions(+)

diff --git a/PVE/API2/Cluster.pm b/PVE/API2/Cluster.pm
index 3b918e55..11d6aa3a 100644
--- a/PVE/API2/Cluster.pm
+++ b/PVE/API2/Cluster.pm
@@ -306,6 +306,11 @@ __PACKAGE__->register_method({
 		    type => 'string',
 		    optional => 1,
 		},
+		'cgroup-mode' => {
+		    description => "The cgroup mode the node operates under (when type == node).",
+		    type => 'integer',
+		    optional => 1,
+		},
 	    },
 	},
     },
@@ -410,10 +415,17 @@ __PACKAGE__->register_method({
 	    }
 	}
 
+	my $cgroup_modes = PVE::Cluster::get_node_kv("cgroup-mode");
+
 	if (!$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);
+
+		if (defined(my $mode = $cgroup_modes->{$node})) {
+		    $entry->{'cgroup-mode'} = int($mode);
+		}
+
 		push @$res, $entry;
 	    }
 	}
diff --git a/PVE/Service/pvestatd.pm b/PVE/Service/pvestatd.pm
index 7193388c..22173d63 100755
--- a/PVE/Service/pvestatd.pm
+++ b/PVE/Service/pvestatd.pm
@@ -122,6 +122,15 @@ my $generate_rrd_string = sub {
     return join(':', map { $_ // 'U' } @$data);
 };
 
+my $broadcast_cgroup_mode = sub {
+    my $cgroup_mode = eval { PVE::CGroup::cgroup_mode(); };
+    if (my $err = $@) {
+	syslog('err', "cgroup mode error: $err");
+    }
+
+    PVE::Cluster::broadcast_node_kv("cgroup-mode", $cgroup_mode);
+};
+
 sub update_node_status {
     my ($status_cfg) = @_;
 
@@ -151,6 +160,8 @@ sub update_node_status {
     # everything not free is considered to be used
     my $dused = $dinfo->{blocks} - $dinfo->{bfree};
 
+    $broadcast_cgroup_mode->();
+
     my $ctime = time();
 
     my $data = $generate_rrd_string->(
-- 
2.30.2