[pve-devel] [PATCH pve-cluster 1/1] add pve2-metrics rrd (single metrics)

Alexandre Derumier aderumier at odiso.com
Wed May 25 08:52:12 CEST 2022


This create 1 single rrd for each metric

allowed paths:

pve2-metrics/vms/<vmid>/<metric>
pve2-metrics/nodes/<node>/<metric>
pve2-metrics/storages/<node>/<storage>/<metric>

Signed-off-by: Alexandre Derumier <aderumier at odiso.com>
---
 data/src/status.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/data/src/status.c b/data/src/status.c
index 9bceaeb..75ab89e 100644
--- a/data/src/status.c
+++ b/data/src/status.c
@@ -1097,6 +1097,23 @@ static const char *rrd_def_storage[] = {
 	NULL,
 };
 
+static const char *rrd_def_metric[] = {
+	"DS:metric:GAUGE:120:0:U",
+
+	"RRA:AVERAGE:0.5:1:70", // 1 min avg - one hour
+	"RRA:AVERAGE:0.5:30:70", // 30 min avg - one day
+	"RRA:AVERAGE:0.5:180:70", // 3 hour avg - one week
+	"RRA:AVERAGE:0.5:720:70", // 12 hour avg - one month
+	"RRA:AVERAGE:0.5:10080:70", // 7 day avg - ony year
+
+	"RRA:MAX:0.5:1:70", // 1 min max - one hour
+	"RRA:MAX:0.5:30:70", // 30 min max - one day
+	"RRA:MAX:0.5:180:70",  // 3 hour max - one week
+	"RRA:MAX:0.5:720:70", // 12 hour max - one month
+	"RRA:MAX:0.5:10080:70", // 7 day max - ony year
+	NULL,
+};
+
 #define RRDDIR "/var/lib/rrdcached/db"
 
 static void
@@ -1173,6 +1190,40 @@ update_rrd_data(
 			create_rrd_file(filename, argcount, rrd_def_node);
 		}
 
+	} else if ((strncmp(key, "pve2-metrics/", 13) == 0)) {
+		const char *path = key + 13;
+		char **pa = g_strsplit(path, "/", -1);
+
+		if (!pa[0] || !pa[1] || !pa[2] || strlen(pa[1]) < 1 || strlen(pa[2]) < 1) {
+			goto keyerror;
+		} else {
+			if (strcmp(pa[0], "vms") == 0 || strcmp(pa[0], "nodes") == 0) {
+				if (pa[3]) {
+					goto keyerror;
+				}
+			} else if (strcmp(pa[0], "storages") == 0) {
+				if (pa[4] || !pa[3] || strlen(pa[3]) < 1) {
+					goto keyerror;
+				}
+			} else {
+				goto keyerror;
+			}
+		}
+		g_strfreev(pa);
+
+
+		filename = g_strdup_printf(RRDDIR "/%s", key);
+
+		if (!g_file_test(filename, G_FILE_TEST_EXISTS)) {
+
+			char *dir = g_path_get_dirname(filename);
+			g_mkdir_with_parents(dir, 0755);
+			g_free(dir);
+
+			int argcount = sizeof(rrd_def_metric)/sizeof(void*) - 1;
+			create_rrd_file(filename, argcount, rrd_def_metric);
+		}
+
 	} else if ((strncmp(key, "pve2-vm/", 8) == 0) ||
 		   (strncmp(key, "pve2.3-vm/", 10) == 0)) {
 		const char *vmid;
-- 
2.30.2




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