Ceph RestAPI monitoring with squid

Thank you, do you mind sharing your whole command result with `--debug` added at the end. Remember to run it as centreon-engine `su - centreon-engine` and remove any confidential info.

Sure !

Here’s what I get : 
 

su - centreon-engine
$ /usr/lib/centreon/plugins//centreon_ceph_restapi.pl --plugin=apps::ceph::restapi::plugin --mode=osd --hostname='my_IP' --port='8443' --proto='https' --api-username='centreon' --api-password='my_valid_api_password' --insecure --warning-osd-detected='' --critical-osd-detected='' --warning-osd-online='' --critical-osd-online='' --warning-osd-online-prct='' --critical-osd-online-prct='' --warning-osd-participating='' --critical-osd-participating='' --warning-osd-participating-prct='' --critical-osd-participating-prct='' --debug

UNKNOWN: 405 Method Not Allowed
== Info:   Trying my_IP...
== Info: Connected to my_IP (my_IP) port 8443 (#0)
== Info: ALPN: offers h2,http/1.1
== Info: TLSv1.3 (OUT), TLS handshake, Client hello (1):
== Info: TLSv1.3 (IN), TLS handshake, Server hello (2):
== Info: TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
== Info: TLSv1.3 (IN), TLS handshake, Certificate (11):
== Info: TLSv1.3 (IN), TLS handshake, CERT verify (15):
== Info: TLSv1.3 (IN), TLS handshake, Finished (20):
== Info: TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
== Info: TLSv1.3 (OUT), TLS handshake, Finished (20):
== Info: SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
== Info: ALPN: server did not agree on a protocol. Uses default.
== Info: Server certificate:
== Info:  subject: O=IT; CN=ceph-restful
== Info:  start date: Sep 29 07:44:20 2025 GMT
== Info:  expire date: Sep 27 07:44:20 2035 GMT
== Info:  issuer: O=IT; CN=ceph-restful
== Info:  SSL certificate verify result: self-signed certificate (18), continuing anyway.
== Info: using HTTP/1.x
=> Send header: POST /api/auth HTTP/1.1
Host: my_IP:8443
Accept: application/vnd.ceph.api.v1.0+json
Content-Type: application/json
Content-Length: 73

=> Send data: {"username":"centreon","password":"my_valid_api_password"}
== Info: TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
== Info: TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
== Info: old SSL session ID is stale, removing
== Info: HTTP 1.0, assume close after body
=> Recv header: HTTP/1.0 405 Method Not Allowed
=> Recv header: Server: Werkzeug/3.1.3 Python/3.13.5
=> Recv header: Date: Mon, 29 Sep 2025 13:21:31 GMT
=> Recv header: Allow: GET
=> Recv header: Content-Length: 77
=> Recv header: Content-Type: text/plain; charset=UTF-8
=> Recv header: Connection: close
=> Recv header:
=> Recv data: 405 Method Not Allowed

The method POST is not allowed for this resource.


== Info: Closing connection 0
== Info: TLSv1.3 (OUT), TLS alert, close notify (256):
$

Hello,

Is the IP Address you are requesting is the Ceph Dashboard’s address?

It seems the API Centreon use for it’s plugin is the API provided by the Ceph Dashboard module

https://docs.ceph.com/en/latest/mgr/ceph_api/#introduction

Hope it helps

Aah, so one needs to configure the dashboard ceph module, not the restful one.

With ceph as used/embedded in Proxmox, that’s a little bit not-immediately-obvious. With some additional information I could get it to work and I’ll leave those pointers here for posterity:

https://forum.proxmox.com/threads/nautilus-activating-ceph-dashboard.85961/

https://forum.proxmox.com/threads/solved-ceph-dashboard-cause-ceph-manager-fail-to-start.119444/