This Check is based on my mysql status check I created years ago. It now supports the Checkmk up to version 2.3 and not longer needs an agent plugin since it works as a subcheck for the normal Checkmk Mysql Monitoring. Monitored Vars:
Aborted_clients
Aborted_connects
Bytes_received
Bytes_sent
Compression
Connections
Created_tmp_disk_tables
Created_tmp_files
Created_tmp_tables
Innodb_buffer_pool_read_requests
Innodb_buffer_pool_reads
Innodb_buffer_pool_write_requests
Innodb_log_waits
Innodb_os_log_written
Innodb_row_lock_time
Innodb_row_lock_waits
Key_read_requests
Key_reads
Key_write_requests
Key_writes
Qcache_hits
Qcache_inserts
Qcache_low_mem_prunes
Qcache_lowmem_prunes
Qcache_not_cached
Queries
Questions
Select_full_join
Select_range_check
Slave_retried_transactions
Slave_running
Slow_launch_threads
Slow_queries
Sort_merge_passes
Table_locks_waited
Innodb_buffer_pool_pages_free
Qcache_free_memory
Qcache_free_blocks
Key_blocks_unused
Threads_cached
Open_tables
Open_files