1 files changed, 46 insertions, 0 deletions
diff --git a/conf.d/health.d/memcached.conf b/conf.d/health.d/memcached.conf
new file mode 100644
index 000000000..05ff14711
--- /dev/null
+++ b/conf.d/health.d/memcached.conf
@@ -0,0 +1,46 @@
+
+# make sure memcached is running
+
+template: memcached_last_collected_secs
+      on: memcached.cache
+    calc: $now - $last_collected_t
+   every: 10s
+    warn: $this > ( 5 * $update_every)
+    crit: $this > (10 * $update_every)
+   units: seconds ago
+    info: number of seconds since the last successful data collection
+
+
+# detect if memcached cache is full
+
+template: cache_full_pcent
+      on: memcached.cache
+    calc: $used * 100 / ($used + $available)
+   every: 10s
+    warn: $this > 80
+    crit: $this > 90
+   units: %
+    info: current cache memory usage
+
+
+# find the rate memcached cache is filling
+
+template: cache_fill_rate
+      on: memcached.cache
+  lookup: max -1s at -30m unaligned of available
+    calc: ($this - $available) / ($now - $after)
+   every: 15s
+   units: KB/s
+    info: average rate the cache fills up (positive), or frees up (negative) space, for the last 30 minutes
+
+
+# find the hours remaining until memcached cache is full
+
+template: cache_full_after_hours
+      on: memcached.cache
+    calc: $available / $cache_fill_rate / 3600
+   every: 10s
+    warn: $this > 0 and $this < 48
+    crit: $this > 0 and $this < 24
+   units: hours
+    info: estimated time the cache will run out of space, if the system continues to add data with the rate of the last 30 minutes