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Added argument substitution to monitor scripts

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Markus Makela
2015-11-11 16:52:24 +02:00
parent 466224b316
commit 2d600868f5
10 changed files with 161 additions and 184 deletions
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47
Documentation/Monitors/NDB-Cluster-Monitor.md
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@ -54,49 +54,6 @@ This parameter controls the timeout for reading from a monitored server. It is i
backend_read_timeout=2
```
## MySQL Cluster Monitor optional parameters
These are optional parameters specific to the MySQL Cluster Monitor.
### `script`
This script will be executed when a server changes its state. The parameter should be an absolute path to the script or it should be in the executable path. The user which is used to run MaxScale should have execution rights to the file itself and the directory it resides in.
```
script=/home/user/script.sh
```
This script will be called with the following command line arguments.
```
<name of the script> --event=<event type> --initiator=<server whose state changed> --nodelist=<list of all servers>
```
### `events`
A list of event names which cause the script to be executed. If this option is not defined, all events cause the script to be executed. The list must contain a comma separated list of event names.
```
events=master_down,slave_down
```
## Script events
Here is a table of all possible event types and their descriptions that the MySQL Cluster monitor can be called with.
Event Name|Description
----------|----------
master_down|A Master server has gone down
master_up|A Master server has come up
slave_down|A Slave server has gone down
slave_up|A Slave server has come up
server_down|A server with no assigned role has gone down
server_up|A server with no assigned role has come up
ndb_down|A MySQL Cluster node has gone down
ndb_up|A MySQL Cluster node has come up
lost_master|A server lost Master status
lost_slave|A server lost Slave status
lost_ndb|A MySQL Cluster node lost node membership
new_master|A new Master was detected
new_slave|A new Slave was detected
new_ndb|A new MySQL Cluster node was found
### Common Monitor Parameters
For a list of optional parameters that all monitors support, read the [Monitor Common](Monitor-Common.md) document.