alert
Visor 'alert' command implementation.
Visor 'alert' command implementation.
+---------------------------------------------------------------------+
| alert | Generates email alerts for user-defined events. |
| | Node events and grid-wide events are defined via mnemonics. |
+---------------------------------------------------------------------+alert alert "-u {-id=|-a}" alert "-r {-t=} {- = } ... {- = }"
-u
Unregisters alert(s). Either '-a' flag or '-id' parameter is required.
Note that only one of the '-u' or '-r' is allowed.
If neither '-u' or '-r' provided - all alerts will be printed.
-a
When provided with '-u' - all alerts will be unregistered.
-id=<alert-id>
When provided with '-u' - alert with matching ID will be unregistered.
-r
Register new alert with mnemonic predicate(s).
Note that only one of the '-u' or '-r' is allowed.
If neither '-u' or '-r' provided - all alerts will be printed.
NOTE: Email settings can be specified in GridGain configu
Email notification will be sent for the alert only
provided mnemonic predicates evaluate to 'true'."
-t
Defines notification frequency in seconds. Default is 15 minutes.
This parameter can only appear with '-r'.
-
This defines a mnemonic for the metric that will be measured:
Grid-wide metrics (not node specific):
cc - Total number of available CPUs in the grid.
nc - Total number of nodes in the grid.
hc - Total number of physical hosts in the grid.
cl - Current average CPU load (in %) in the grid.
Per-node current metrics:
aj - Active jobs on the node.
cj - Cancelled jobs on the node.
tc - Thread count on the node.
ut - Up time on the node.
Note: can have 's', 'm', or 'h' suffix indicating
seconds, minutes, and hours. By default (no suffix provided)
value is assumed to be in milliseconds.
je - Job execute time on the node.
jw - Job wait time on the node.
wj - Waiting jobs count on the node.
rj - Rejected jobs count on the node.
hu - Heap memory used (in MB) on the node.
cd - Current CPU load on the node.
hm - Heap memory maximum (in MB) on the node.
),
Comparison part of the mnemonic predicate:
eq - Equal '=' to '' number.
neq - Not equal '!=' to '' number.
gt - Greater than '>' to '' number.
gte - Greater than or equal '>=' to '' number.
lt - Less than '<' to 'NN' number.
lte - Less than or equal '<=' to '' number.
NOTE: Email notification will be sent for the alert only when all
provided mnemonic predicates evaluate to 'true'. alert
Prints all currently registered alerts.
alert "-u -a"
Unregisters all currently registered alerts.
alert "-u -id=12345678"
Unregisters alert with provided ID.
alert "-r -t=900 -cc=gte4 -cl=gt50"
Notify every 15 min if grid has >= 4 CPUs and > 50% CPU load.
Companion object that does initialization of the command.
Overview
Visor 'alert' command implementation.
Help
+---------------------------------------------------------------------+ | alert | Generates email alerts for user-defined events. | | | Node events and grid-wide events are defined via mnemonics. | +---------------------------------------------------------------------+Specification
Arguments
-u Unregisters alert(s). Either '-a' flag or '-id' parameter is required. Note that only one of the '-u' or '-r' is allowed. If neither '-u' or '-r' provided - all alerts will be printed. -a When provided with '-u' - all alerts will be unregistered. -id=<alert-id> When provided with '-u' - alert with matching ID will be unregistered. -r Register new alert with mnemonic predicate(s). Note that only one of the '-u' or '-r' is allowed. If neither '-u' or '-r' provided - all alerts will be printed. -t Defines notification frequency in seconds. Default is 15 minutes. This parameter can only appear with '-r'. -ck=ek<num> This defines a mnemonic for the metric that will be measured: Grid-wide metrics (not node specific): -cc Total number of available CPUs in the grid. -nc Total number of nodes in the grid. -hc Total number of physical hosts in the grid. -cl Current average CPU load (in %) in the grid. Per-node current metrics: -aj Active jobs on the node. -cj Cancelled jobs on the node. -tc Thread count on the node. -it Idle time on the node. Note: <num> can have 's', 'm', or 'h' suffix indicating seconds, minutes, and hours. By default (no suffix provided) value is assumed to be in milliseconds. -ut Up time on the node. Note: <num> can have 's', 'm', or 'h' suffix indicating seconds, minutes, and hours. By default (no suffix provided) value is assumed to be in milliseconds. -je Job execute time on the node. -jw Job wait time on the node. -wj Waiting jobs count on the node. -rj Rejected jobs count on the node. -hu Heap memory used (in MB) on the node. -cd Current CPU load on the node. -hm Heap memory maximum (in MB) on the node. Comparison part of the mnemonic predicate: =eq<num> Equal '=' to '' number.
=neq<num> Not equal '!=' to '' number.
=gt<num> Greater than '>' to '' number.
=gte<num> Greater than or equal '>=' to '' number.
=lt<num> Less than '<' to 'NN' number.
=lte<num> Less than or equal '<=' to '' number.
NOTE: Email notification will be sent for the alert only when all
provided mnemonic predicates evaluate to 'true'.Examples
alert Prints all currently registered alerts. alert "-u -a" Unregisters all currently registered alerts. alert "-u -id=12345678" Unregisters alert with provided ID. alert "-r -t=900 -cc=gte4 -cl=gt50" Notify every 15 min if grid has >= 4 CPUs and > 50% CPU load.