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Monyog Disk Space Mom Working

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This topic contains 1 reply, has 0 voices, and was last updated by  anup_fc 1 year, 8 months ago.

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  • #13505

    anup_fc
    Participant

    How does MONYog MOM calculates Disk space free for all the mounted partitions.

     

    I am more interested towards  MONyog.System.Disk.sys_disk_free_innodb MOM .

     

    How does MOnyog calcualtes ? how does monyog system MOM finds out the current Data directory or Innodb directory for Disk monitoring ?

     

    How can i change those function and what will  MONyog.System.Disk.sys_disk_free_innodb function will return ?

     

  • #35670

    Ankush
    Participant
    MONyog calculates the volume usage by executing ‘df’ command on the target machine. MONyog gets the information about data directory(and the volume where it resides) from 3 different system variables: basedir, tmpdir and innodb_data_home_dir.

    MONyog.System.Disk.sys_disk_free_innodb returns the amount of free space which is left on the volume where InnoDB data resides.

    For more info on other MOMs related to disk monitoring, please refer: http://monyogkb.webyog.com/article/108-monyog-object-model 

    You can use the other MOMs to create a new monitor or change the behaviour of an existing monitor but you cannot add any extra MOM.

  • #35671

    anup_fc
    Participant

    OK our Innodb data resides on some other mounts not on base dir location and our innodb-data-home_dir is empty .In this case it should look for datadir variable.

    Does monyog checks datadir variable to find out the right data directory? because its always innodb_data_home_dir always in datadir .

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