health: remove ram_in_swap alarm (#10789)

health/health.d/swap.conf

@@ -15,18 +15,6 @@
     info: the amount of memory swapped in the last 30 minutes, as a percentage of the system RAM
       to: sysadmin
 
-   alarm: ram_in_swap
-      on: system.swap
-      os: linux
-   hosts: *
-    calc: $used * 100 / ( $system.ram.used + $system.ram.cached + $system.ram.free )
-   units: % of RAM
-   every: 10s
-    warn: $this > (($status >= $WARNING)  ? (40) : (50))
-   delay: up 30s down 15m multiplier 1.5 max 1h
-    info: the swap memory used, as a percentage of the system RAM
-      to: sysadmin
-
    alarm: used_swap
       on: system.swap
       os: linux freebsd

web/api/exporters/shell/README.md

@@ -38,14 +38,12 @@ echo ${NETDATA_SYSTEM_CPU_VISIBLETOTAL}
 
 # what about alarms?
 set | grep "^NETDATA_ALARM_SYSTEM_SWAP_"
-NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS=CRITICAL
-NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_VALUE=53
 NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS=CLEAR
 NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_VALUE=51
 
-# let's get the current status of the alarm 'ram in swap'
+# let's get the current status of the alarm 'used swap'
-echo ${NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS}
+echo ${NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS}
-CRITICAL
+CLEAR
 
 # is it fast?
 time curl -s 'http://localhost:19999/api/v1/allmetrics' >/dev/null