# Pmm Agent username

**URL:** <https://forums.percona.com/t/pmm-agent-username/8820>\
**Category:** PMM 2.x\
**Tags:** mongodb\
**Created:** [January 18, 2021, 9:13am UTC](https://forums.percona.com/t/pmm-agent-username/8820 "2021-01-18T09:13:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![igal8183](https://avatars.discourse-cdn.com/v4/letter/i/9d8465/32.png) [@igal8183](https://forums.percona.com/u/igal8183)\
**Post date:** [January 18, 2021, 9:13am UTC](https://forums.percona.com/t/pmm-agent-username/8820/1 "2021-01-18T09:13:04Z")

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Hi,  
How can I know which username the pmm agent uses to connect to the MongoDB cluster?  
I “inherited” the system and need to check that out

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**Author:** ![Vadim\_Yalovets](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/vadim_yalovets/32/43_2.png) [@Vadim\_Yalovets](https://forums.percona.com/u/Vadim_Yalovets)\
**Post date:** [January 18, 2021, 10:47am UTC](https://forums.percona.com/t/pmm-agent-username/8820/2 "2021-01-18T10:47:49Z")

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Hi @igal8183 ,

Such information is stored in postgresql pmm-managed database on PMM server.

 ![Screenshot_20210118_124829](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/e/e867375c739958b8cf6a8b339983621133dfb978.png)

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<div class="post-metadata">

**Author:** ![igal8183](https://avatars.discourse-cdn.com/v4/letter/i/9d8465/32.png) [@igal8183](https://forums.percona.com/u/igal8183)\
**Post date:** [January 18, 2021, 11:31am UTC](https://forums.percona.com/t/pmm-agent-username/8820/3 "2021-01-18T11:31:23Z")

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> [@Vadim\_Yalovets](#):
>
> pmm-managed database

Thanks @Vadim_Yalovets  
Do you happen to know the default password for the postgres user?  
I’m trying to switch to this user but it prompts for a password

```
su postgres

```

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<div class="post-metadata">

**Author:** ![Vadim\_Yalovets](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/vadim_yalovets/32/43_2.png) [@Vadim\_Yalovets](https://forums.percona.com/u/Vadim_Yalovets)\
**Post date:** [January 18, 2021, 11:45am UTC](https://forums.percona.com/t/pmm-agent-username/8820/4 "2021-01-18T11:45:08Z")

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No password is required for it.  
 ![Screenshot_20210118_134407](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/a/a763797d21c02e490bb64523dd65222ef0dd5074.png)