I can't speak for details of ceph-ansible. I don't use it because from what I can see, ceph-ansible requires a lot more symmetry in the server farm than I have. It is, however, my understanding that cephadm is the preferred installation and management option these days and it certainly helped me to do the migration. The actual SNMP subsystem for Ceph is based on listening to Prometheus alerts and translating them into SNMP traps (https://github.com/maxwo/snmp_notifier). Should be fairly version- independent I'd think. If ceph-ansible doesn't support it, I expect than an ansible playbook to do the job would be relatively simple. Just as an alternative, since I don't use SNMP for Ceph, and I do use Nagios as my general systems monitor, I did a Nagios NRPE script that simply runs "ceph health" and looks for "OK", "WARN" or "ERROR" in the response, which translates to Nagios alert levels. If Nagios alerts me, I then go to the Ceph Control panel for details. Which I'd think is a lot less work than dissecting traps, though I can tolerate a 5-minute delay for polling on alerts here. Your Mileage May Vary. On Tue, 2023-12-19 at 08:10 +0000, Eugen Block wrote:
Hi,
I don't have an answer for the SNMP part, I guess you could just bring up your own snmp daemon and configure it to your needs. As for the orchestrator backend you have these three options (I don't know what "test_orchestrator" does but it doesn't sound like it should be used in production):
enum_allowed=['cephadm', 'rook', 'test_orchestrator'],
If you intend to use the orchestrator I suggest to move to cephadm (you can convert an existing cluster by following this guide: https://docs.ceph.com/en/latest/cephadm/adoption/). Although the orchestrator is "on" it requires a backend.
Regards, Eugen
Zitat von Lokendra Rathour <lokendrarathour@gmail.com>:
Hi Team, please help in the reference of the issue raised.
Best Regards, Lokendra
On Wed, Dec 13, 2023 at 2:33 PM Kushagr Gupta <kushagrguptasps.mun@gmail.com> wrote:
Hi Team,
*Environment:* We have deployed a ceph setup using ceph-ansible. Ceph-version: 18.2.0 OS: Almalinux 8.8 We have a 3 node-setup.
*Queries:*
1. Is SNMP supported for ceph-ansible?Is there some other way to setup SNMP gateway for the ceph cluster? 2. Do we have a procedure to set backend for ceph-orchestrator via ceph-ansible? Which backend to use? 3. Are there any CEPH MIB files which work independent of prometheus.
*Description:* We are trying to perform SNMP monitoring for the ceph cluster using the following link:
1. https://docs.ceph.com/en/quincy/cephadm/services/snmp-gateway/#:~:text=Ceph's%20SNMP%20integration%20focuses%20on,a%20designated%20SNMP%20management%20platform . 2. https://www.ibm.com/docs/en/storage-ceph/7?topic=traps-deploying-snmp-gatewa...
But when we try to follow the steps mentioned in the above link, we get the following error when we try to run any "ceph orch" we get the following error: "Error ENOENT: No orchestrator configured (try `ceph orch set backend`)"
After going through following links: 1. https://www.ibm.com/docs/en/storage-ceph/5?topic=operations-use-ceph-orchest... 2. https://forum.proxmox.com/threads/ceph-mgr-orchestrator-enabled-but-showing-... 3. https://docs.ceph.com/en/latest/mgr/orchestrator_modules/ I think since we have deployed the cluster using ceph-ansible, we can't use the ceph-orch commands. When we checked in the cluster, the following are the enabled modules: " [root@storagenode1 ~]# ceph mgr module ls MODULE balancer on (always on) crash on (always on) devicehealth on (always on) orchestrator on (always on) pg_autoscaler on (always on) progress on (always on) rbd_support on (always on) status on (always on) telemetry on (always on) volumes on (always on) alerts on iostat on nfs on prometheus on restful on dashboard - influx - insights - localpool - mds_autoscaler - mirroring - osd_perf_query - osd_support - rgw - selftest - snap_schedule - stats - telegraf - test_orchestrator - zabbix - [root@storagenode1 ~]# " As can be seen above, orchestrator is on.
Also, We were exploring more about snmp and as per the file: "/etc/prometheus/ceph/ceph_default_alerts.yml" on the ceph storage, the OIDs in the file represents the OID for ceph components via prometheus. For example: for the following OID: 1.3.6.1.4.1.50495.1.2.1.2.1 [root@storagenode3 ~]# snmpwalk -v 2c -c 209ijvfwer0df92jd -O e 10.0.1.36 1.3.6.1.4.1.50495.1.2.1.2.1 CEPH-MIB::promHealthStatusError = No Such Object available on this agent at this OID [root@storagenode3 ~]#
Kindly help us for the same.
Thanks and regards, Kushagra Gupta
-- ~ Lokendra skype: lokendrarathour _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
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