37 lines
1.1 KiB
Markdown
37 lines
1.1 KiB
Markdown
# Configuring the Galera Monitor
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This document describes how to configure a Galera cluster monitor.
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## Configuring the Monitor
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Define the monitor that monitors the servers.
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```
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[Galera-Monitor]
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type=monitor
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module=galeramon
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servers=dbserv1, dbserv2, dbserv3
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user=monitor_user
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password=my_password
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monitor_interval=2000ms
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```
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The mandatory parameters are the object type, the monitor module to use, the
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list of servers to monitor and the username and password to use when connecting
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to the servers. The `monitor_interval` parameter controls for how long
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the monitor waits between each monitoring loop.
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This monitor module will assign one node within the Galera Cluster as the
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current master and other nodes as slave. Only those nodes that are active
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members of the cluster are considered when making the choice of master node. The
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master node will be the node with the lowest value of `wsrep_local_index`.
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## Monitor User
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The monitor user does not require any special grants to monitor a Galera
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cluster. To create a user for the monitor, execute the following SQL.
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```
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CREATE USER 'monitor_user'@'%' IDENTIFIED BY 'my_password';
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```
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