# any way to tell ptchecksum to skip a replica server

**URL:** <https://forums.percona.com/t/any-way-to-tell-ptchecksum-to-skip-a-replica-server/3883>\
**Category:** Percona Toolkit\
**Created:** [November 14, 2014, 1:15pm UTC](https://forums.percona.com/t/any-way-to-tell-ptchecksum-to-skip-a-replica-server/3883 "2014-11-14T13:15:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![epinc](https://avatars.discourse-cdn.com/v4/letter/e/bbe5ce/32.png) [@epinc](https://forums.percona.com/u/epinc)\
**Post date:** [November 14, 2014, 1:15pm UTC](https://forums.percona.com/t/any-way-to-tell-ptchecksum-to-skip-a-replica-server/3883/1 "2014-11-14T13:15:08Z")

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We have a replica we use for testing. We’d like to keep is from being checked by ptchecksum. I know we can limit what tables and what databases are checked, but I don’t see a way to skip a replica server? Is there?

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**Author:** ![scott.nemes](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/scott.nemes/32/5_2.png) [@scott.nemes](https://forums.percona.com/u/scott.nemes)\
**Post date:** [November 14, 2014, 4:12pm UTC](https://forums.percona.com/t/any-way-to-tell-ptchecksum-to-skip-a-replica-server/3883/2 "2014-11-14T16:12:08Z")

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Hi Epinc;

To only check certain slaves you can use the “dsn” recursion method:

[url][pt-table-checksum — Percona Toolkit Documentation](http://www.percona.com/doc/percona-toolkit/2.2/pt-table-checksum.html#cmdoption-pt-table-checksum--recursion-method%5B/url%5D)

The downside to this is that you need to specify all slaves to check, so if you have a large number of slaves or if they change frequently that could become burdensome. However this is the only method I know of to skip specific slaves.

-Scott

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**Author:** ![epinc](https://avatars.discourse-cdn.com/v4/letter/e/bbe5ce/32.png) [@epinc](https://forums.percona.com/u/epinc)\
**Post date:** [November 14, 2014, 7:25pm UTC](https://forums.percona.com/t/any-way-to-tell-ptchecksum-to-skip-a-replica-server/3883/3 "2014-11-14T19:25:57Z")

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Exactly what I need actually. Thanks!