Faile to start up server with ceph backend

Seafile Server
1

Following version 12.0 manual with setup_with_ceph

and having ceph conf in /etc/ceph/ceph.conf with ceph.client.admin.keyring
but still getting this error in /opt/seafile-data/seafile/logs/seafile.log

[2025-08-19 15:34:13] [INFO] seafile-session.c(86): fileserver: web_token_expire_time = 3600
[2025-08-19 15:34:13] [INFO] seafile-session.c(98): fileserver: max_index_processing_threads= 3
[2025-08-19 15:34:13] [INFO] seafile-session.c(111): fileserver: fixed_block_size = 8388608
[2025-08-19 15:34:13] [INFO] seafile-session.c(123): fileserver: max_indexing_threads = 1
[2025-08-19 15:34:13] [INFO] seafile-session.c(138): fileserver: put_head_commit_request_timeout = 10
[2025-08-19 15:34:13] [INFO] seafile-session.c(150): fileserver: skip_block_hash = 0
[2025-08-19 15:34:13] [INFO] ../common/seaf-utils.c(581): Use database Mysql
[2025-08-19 15:34:13] [WARNING] ../common/obj-backend-ceph.c(418): [Obj backend] Cannot read config file: No such file or directory
[2025-08-19 15:34:13] [WARNING] ../common/obj-backend-ceph.c(526): [Obj backend] Failed to init ceph: pool name is seafile-fs.
[2025-08-19 15:34:13] [WARNING] ../common/obj-store.c(112): [Object store] Failed to load backend for fs.
[2025-08-19 15:34:13] [WARNING] seaf-server.c(2045): Failed to create seafile session.
[2025-08-19 15:34:15] [INFO] seafile-session.c(86): fileserver: web_token_expire_time = 3600
[2025-08-19 15:34:15] [INFO] seafile-session.c(98): fileserver: max_index_processing_threads= 3
[2025-08-19 15:34:15] [INFO] seafile-session.c(111): fileserver: fixed_block_size = 8388608
[2025-08-19 15:34:15] [INFO] seafile-session.c(123): fileserver: max_indexing_threads = 1
[2025-08-19 15:34:15] [INFO] seafile-session.c(138): fileserver: put_head_commit_request_timeout = 10
[2025-08-19 15:34:15] [INFO] seafile-session.c(150): fileserver: skip_block_hash = 0
[2025-08-19 15:34:15] [INFO] ../common/seaf-utils.c(581): Use database Mysql
[2025-08-19 15:34:15] [WARNING] ../common/obj-backend-ceph.c(418): [Obj backend] Cannot read config file: No such file or directory
[2025-08-19 15:34:15] [WARNING] ../common/obj-backend-ceph.c(526): [Obj backend] Failed to init ceph: pool name is seafile-fs.
[2025-08-19 15:34:15] [WARNING] ../common/obj-store.c(112): [Object store] Failed to load backend for fs.
[2025-08-19 15:34:15] [WARNING] seaf-server.c(2045): Failed to create seafile session.
2

Do you use S3 Gateway of Ceph? If not, it is recommended to use the S3 interface of ceph.

3

Hi, Daniel !

Is there get any limitation have to using S3 service instead of self-host ceph server? Because we are much prefer not to rely external service.

4

Self-host ceph server also have S3 interface. The S3 interface of Seafile is well tested. We do not recommend to use the Rados interface of Ceph.