README
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grchecker
grchecker - a program for monitoring a MySQL Group Replication cluster
If you want to see how your GR cluster is performing this program
may help. It currently behaves a little like vmstat in polling a
single server and then showing the state of the GR cluster.
To get an idea of current output take a look at: sample_output.2023-11-19.txt.
I intend to extend this later to poll all members and then check for cluster inconsistencies, indicating them appropriately.
Usage
Usage: grchecker <options> [<DSN>] [<interval>]
If no parameters are provided then it will try to read from the
MYSQL_DSN environment variable to determine the MySQL host to connect
to. The format to use is the github.com/go-sql-drivers/mysql
package's DSN format.
The polling interval is seconds and can be modified. The default value is 1 second.
Options:
--debug enable debug logging
--interval=<interval> collection interval in seconds. Default 1.
--dsn=<dsn> golang MySQL DSN to use to connect to a server.
Notes
This is very much work in progress. Current behaviour works on MySQL 8.0 but can collect MySQL 8.2+ GR table information too.
Contributing
Please file a PR at https://github.com/sjmudd/grchecker
Licensing
BSD 2-Clause License
Feedback
Feedback and patches welcome.
Simon J Mudd sjmudd@pobox.com
Documentation
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There is no documentation for this package.
Source Files