added k3s metrics mappings for apps

METRICS.md

@@ -128,4 +128,13 @@ Both memeory statistics from TrueNAS are exported on the onside the physical mem
 |`zfs_prefetch_data_hits_rate`|`op` hit or miss type|`events/s`|Number of hits for the type of cache hit.|
 |`zfs_hash_elements`|`op` current, max|`elements`|Number of hash elements present and maximum.|
 |`zfs_hash_chains`|`op` current, max|`chains`|Number of hash chains present and maximum.|
-|`zfs_pool`|<ul><li>`pool` name of the pool</li><li>`state`</li></ul>|`boolean`|Shows the states of the pool with boolean indicating if they are active.|
+|`zfs_pool`|<ul><li>`pool` name of the pool</li><li>`state`</li></ul>|`boolean`|Shows the states of the pool with boolean indicating if they are active.|
+
+## k3s
+
+|Metric name|Labels|Unit|Description|
+|-----------|------|----|-----------|
+|`k3s_pod_cpu`|`pod` the pod name|`ms/ns`|A number that represents the cpu usage of the pod. (cpu time in ms or ns needs to be tested)|
+|`k3s_pod_mem`|`pod` the pod name|`bytes`|The number of bytes of memory this pod is using.|
+|`k3s_pod_net`|<ul><li>`pod` the pod name</li><li>`direction` the direction of network traffic</li></ul>|`bytes`|The number of bytes in/out of the pod over the network interface.|
+

graphite_mapping.conf

@@ -488,3 +488,32 @@ mappings:
     job: "truenas"
     instance: "${1}"
     op: "${2}"
+
+################################################
+# k3s mappings
+################################################
+
+- match: 'truenas\.(.*)\.k3s_stats\.k3s_pod_stats\.(.*)\.cpu'
+  match_type: "regex"
+  name: "k3s_pod_cpu"
+  labels:
+    job: "truenas"
+    instance: "${1}"
+    pod: "${2}"
+
+- match: 'truenas\.(.*)\.k3s_stats\.k3s_pod_stats\.(.*)\.mem'
+  match_type: "regex"
+  name: "k3s_pod_mem"
+  labels:
+    job: "truenas"
+    instance: "${1}"
+    pod: "${2}"
+
+- match: 'truenas\.(.*)\.k3s_stats\.k3s_pod_stats\.(.*)\.net\.(.*)'
+  match_type: "regex"
+  name: "k3s_pod_net"
+  labels:
+    job: "truenas"
+    instance: "${1}"
+    pod: "${2}"
+    direction: "${3}"