# \[FAIL\] Host key verification failed: Pumanew

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911>\
**Category:** Unified Model\
**Tags:** ARCHER2\
**Created:** [10 February 2023 14:48 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911 "2023-02-10T14:48:47Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![timmyf](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@timmyf](https://cms-helpdesk.ncas.ac.uk/u/timmyf)\
**Post date:** [10 February 2023 14:48 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911/1 "2023-02-10T14:48:47Z")

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Hi,  
The UM suite **u-cq224** which has been running smoothly when submitted earlier from **pumatest** is giving the following error while I try submitting the job now from **pumanew**. This is the first time I am attempting a UM suite submission after the migration to the pumanew.

* * *

[INFO] symlink: rose-conf/20230210T142832-run.version \<= log/rose-suite-run.version

[INFO] REGISTERED u-cq224 → /home/eartfr/cylc-run/u-cq224

**[FAIL]** rsync -a --exclude=.\* --timeout=1800 --rsh=ssh\ -oBatchMode=yes --exclude=2aea6b66-8a08-421b-a40b-0a9c8f2c973c --exclude=log/2aea6b66-8a08-421b-a40b-0a9c8f2c973c --exclude=share/2aea6b66-8a08-421b-a40b-0a9c8f2c973c --exclude=share/cycle/2aea6b66-8a08-421b-a40b-0a9c8f2c973c --exclude=work/2aea6b66-8a08-421b-a40b-0a9c8f2c973c --exclude=/.\* --exclude=/cylc-suite.db --exclude=/log --exclude=/log.\* --exclude=/state --exclude=/share --exclude=/work ./ [tfrancis@login.archer2.ac.uk](mailto:tfrancis@login.archer2.ac.uk):cylc-run/u-cq224 # return-code=255, stderr=

**[FAIL]** Host key verification failed.

**[FAIL]** rsync: connection unexpectedly closed (0 bytes received so far) [sender]

**[FAIL]** rsync error: unexplained error (code 255) at io.c(226) [sender=3.1.2]

* * *

My pumanew user name: **eartfr**  
My archer2 user name: **tfrancis**

best regards,  
Timmy

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**Author:** ![dcase](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/dcase/32/468_2.png) [@dcase](https://cms-helpdesk.ncas.ac.uk/u/dcase)\
**Post date:** [10 February 2023 15:08 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911/2 "2023-02-10T15:08:14Z")

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have you added your archerum key to the agent? (ssh-add ~/.ssh/id\_rsa\_archerum)

make sure you can run:  
ssh [tfrancis@login.archer2.ac.uk](mailto:tfrancis@login.archer2.ac.uk) ls  
and see the files on your /home drive on archer2. You should be able to do this without being queried for yes/no confirmation or giving a password

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**Author:** ![dcase](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/dcase/32/468_2.png) [@dcase](https://cms-helpdesk.ncas.ac.uk/u/dcase)\
**Post date:** [10 February 2023 16:07 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911/4 "2023-02-10T16:07:47Z")

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You can delete the offending lines of known\_hosts (probably fine to delete the whole file)

I’m not sure if you need a new key - if so you may need to wait until Monday as it’s a strike day. You may be able to get by by deleting the known\_hosts though, so give that a go.

Also - you may have to type ‘yes’ once - but as long as it goes through the 2nd time you should be fine

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\
**Post date:** [26 November 2023 15:53 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911/6 "2023-11-26T15:53:20Z")

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**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\
**Post date:** [27 November 2023 12:28 UTC](https://cms-helpdesk.ncas.ac.uk/t/fail-host-key-verification-failed-pumanew/911/7 "2023-11-27T12:28:46Z")

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