Office document conversion failed

Seafile Server
#1

Hi,
I use seafile pro 9.0.13 on Centos and the docker version of OnlyOffice for document preview. Until today everything worked. But now the preview fails with the message “Document convertion failed.”. The convert.log on the docker server show the following messages:

[2022-12-05 15:50:59,340] [DEBUG] root:187 _fetch_document_or_pdf start to fetch task <type: doc, id: 22a3f9c12f069ca624e945fbcabfc9dedacd0522>
172.18.0.1 - - [05/Dec/2022 15:50:59] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:01] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:03] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:06] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:09] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:12] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:15] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
172.18.0.1 - - [05/Dec/2022 15:51:18] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -
[2022-12-05 15:51:19,359] [WARNING] root:193 _fetch_document_or_pdf failed to fetch document of task <type: doc, id: 22a3f9c12f069ca624e945fbcabfc9dedacd0522> (https://my.seafile.server/seafhttp/files/1b2c019e-c4e6-45a1-a7f5-0075982ae07b/Drupal.doc): <urlopen error [Errno -3] Temporary failure in name resolution>
172.18.0.1 - - [05/Dec/2022 15:51:21] "GET /query-status?file_id=22a3f9c12f069ca624e945fbcabfc9dedacd0522&doctype=document HTTP/1.1" 200 -

Seems to be some kind of python nameservice error.
Any ideas?
Dirk

#2

Docker on Centos sucks. There is a problem with the default network that overlaps with our internal network. We switched from docker to podman. Now the preview works again.