[pve-devel] [PATCH cluster v4 13/15] api/cluster: add endpoint to GET cluster join information

[Thomas Lamprecht]

Returns all relevant information for joining this cluster over the
current connected node securely over the API, address, fingerprint,
totem config section and (not directly needed but possibly useful)
cluster configuration digest.

Signed-off-by: Thomas Lamprecht <t.lamprecht at proxmox.com>
---
 data/PVE/API2/ClusterConfig.pm | 53 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/data/PVE/API2/ClusterConfig.pm b/data/PVE/API2/ClusterConfig.pm
index 8c88a17..e44cd85 100644
--- a/data/PVE/API2/ClusterConfig.pm
+++ b/data/PVE/API2/ClusterConfig.pm
@@ -396,6 +396,59 @@ __PACKAGE__->register_method ({
     }});
 
 __PACKAGE__->register_method ({
+    name => 'join_info',
+    path => 'join',
+    method => 'GET',
+    description => "Get information needed to join this cluster over the connected node.",
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node', {
+		description => "The node for which the joinee gets the nodeinfo. ",
+		               #"Defaults to connected (current) node.",
+		default => "current connected node",
+		optional => 1,
+	    }),
+	},
+    },
+    returns => {
+	type => 'object',
+	additionalProperties => 0,
+	properties => {
+	    nodeinfo => {
+		type => 'object',
+		properties => {
+		    addr => { type => 'string', format => 'ip' },
+		    fp => get_standard_option('fingerprint-sha256'),
+		}
+	    },
+	    totem => { type => 'object' },
+	    config_digest => { type => 'string' },
+	},
+    },
+    code => sub {
+	my ($param) = @_;
+
+	my $nodename = $param->{node} // PVE::INotify::nodename();
+
+	PVE::Cluster::cfs_update(1);
+	my $conf = PVE::Cluster::cfs_read_file('corosync.conf');
+	my $totem_cfg = $conf->{main}->{totem} // {};
+	my $corosync_config_digest = $conf->{digest};
+
+	my $res = {
+	    nodeinfo => {
+		fp => PVE::Cluster::get_node_fingerprint($nodename),
+		addr => scalar(PVE::Cluster::remote_node_ip($nodename)),
+	    },
+	    totem => $totem_cfg,
+	    config_digest => $corosync_config_digest,
+	};
+
+	return $res;
+    }});
+
+__PACKAGE__->register_method ({
     name => 'join',
     path => 'join',
     method => 'POST',
-- 
2.11.0