Metric plugins - mackerel-plugin-mssql

mackerel-plugin-mssql is a plugin that posts Microsoft SQL Server information as a metric.

SQL Server versions supported by the plugin

Post counter values for SQL Server objects.

Information about the memory buffers used by SQL Server. Get information on Buffer Manager object.

Metric Display Name	Metric Name	Diff	Stacked	Description
Cache Hit Ratio	mssql.buffer_cache_hit_ratio		✓	Percentage of pages found in the buffer cache without reading from disk
Page Life Expectancy	mssql.buffer_page_life_expectancy	✓	✓	Number of seconds a page remains in the buffer pool without referenced
Checkpoint Pages	mssql.buffer_checkpoint_pages		✓	Number of pages flushed to disk per second by a checkpoint or other operation that require all dirty pages to be flushed

Information on SQL Server usage. Get information on SQL Statistics object and General Statistics object.

Metric Display Name	Metric Name	Diff	Stacked	Description
Batch Requests	mssql.stats_batch_requests	✓	✓	Number of Transact-SQL command batches received per second
SQL Compilations	mssql.stats_sql_compilations	✓	✓	SQL compiles per second
SQL Re-Compilations	mssql.stats_sql_recompilations	✓	✓	Number of statement recompilations per second
Connections	mssql.stats_connections		✓	Number of users currently connected to SQL Server
Lock Waits	mssql.stats_lock_waits		✓	Number of waits for the File IO Provider lock per second
Procs Blocked	mssql.stats_procs_blocked		✓	Number of processes currently blocked

Metric Display Name	Metric Name	Diff	Stacked	Description
Page Splits	mssql.access_page_splits	✓	✓	Number of page splits that occurred per second as a result of index page overflow.

Option	Description	Default
-metric-key-prefix	Specifies the prefix of the metric name	mssql
-instance	Specify the instance name as either SQLSERVER or SQLEXPRESS. Other names are not supported.	SQLSERVER
-tempfile	Specify the destination file path for tempfile

The tempfile is created by default under C:\Windows\Temp in the format mackerel-plugin-mssql-<hash string>.

The following is an example configuration for an instance name of SQLEXPRESS.

[plugin.metrics.mssql]
command = ["mackerel-plugin-mssql", "-instance", "SQLEXPRESS"]