# can't add arbiter

**URL:** <https://forums.percona.com/t/cant-add-arbiter/4707>\
**Category:** Percona Server for MongoDB\
**Created:** [February 8, 2016, 10:50am UTC](https://forums.percona.com/t/cant-add-arbiter/4707 "2016-02-08T10:50:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pocket5s](https://avatars.discourse-cdn.com/v4/letter/p/5f9b8f/32.png) [@pocket5s](https://forums.percona.com/u/pocket5s)\
**Post date:** [February 8, 2016, 10:50am UTC](https://forums.percona.com/t/cant-add-arbiter/4707/1 "2016-02-08T10:50:21Z")

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Trying to add an arbiter to a cluster and when I do I get this response:

{  
“ok” : 0,  
“errmsg” : “PerconaFT: internal error code 28: unknown ft error”,  
“code” : 1  
}

---

<div class="post-metadata">

**Author:** ![luis.contreras](https://avatars.discourse-cdn.com/v4/letter/l/df705f/32.png) [@luis.contreras](https://forums.percona.com/u/luis.contreras)\
**Post date:** [February 11, 2016, 7:52am UTC](https://forums.percona.com/t/cant-add-arbiter/4707/2 "2016-02-11T07:52:20Z")

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Hi Pocket5s,

Could post your config file ? and log files ?