He instalado un clúster ceph (quincy) que ya tiene 2 nodos y 4 OSD. Ahora agregué un tercer host que ejecuta Debian (bullseye) al clúster. El nuevo host se detecta correctamente y ejecuta un mom.
El problema es que no aparece ningún OSD en el nuevo host, incluso si hubiera 2 discos disponibles. Cuando ejecuto el comando en uno de mis nodos:
$ sudo ceph orch device ls
Sólo puedo ver los dispositivos de los otros nodos. Pero el nuevo nodo no aparece en la lista.
Pero lsblkmuestra los dos discos disponibles en el nuevo host:
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 1 476.9G 0 disk
sdb 8:16 1 476.9G 0 disk
├─sdb1 8:17 1 16G 0 part [SWAP]
├─sdb2 8:18 1 1G 0 part /boot
└─sdb3 8:19 1 459.9G 0 part /
sdc 8:32 1 476.9G 0 disk
También probé el ceph-volumecomando en el nuevo host. Pero tampoco este comando encontró ningún disco:
$ sudo cephadm ceph-volume inventory
Inferring fsid e79............
Device Path Size Device nodes rotates available Model name
Ya eliminé el nuevo host y lo instalé con un sistema operativo nuevo. Pero no puedo entender cuál puede ser la razón por la que ceph no encuentra ningún disco.
¿Es posible que Ceph no permita mezclar nodos con SSD/SATA y SSD/NVME?
El cephadm.logresultado durante la llamada ceph-volume inventoryparece no proporcionar ninguna información adicional:
2022-12-08 00:15:15,432 7fdca25ac740 DEBUG --------------------------------------------------------------------------------
cephadm ['ceph-volume', 'inventory']
2022-12-08 00:15:15,432 7fdca25ac740 DEBUG Using default config /etc/ceph/ceph.conf
2022-12-08 00:15:16,131 7fee4d4c8740 DEBUG --------------------------------------------------------------------------------
cephadm ['check-host']
2022-12-08 00:15:16,131 7fee4d4c8740 INFO docker (/usr/bin/docker) is present
2022-12-08 00:15:16,131 7fee4d4c8740 INFO systemctl is present
2022-12-08 00:15:16,131 7fee4d4c8740 INFO lvcreate is present
2022-12-08 00:15:16,176 7fee4d4c8740 INFO Unit ntp.service is enabled and running
2022-12-08 00:15:16,176 7fee4d4c8740 INFO Host looks OK
2022-12-08 00:15:16,444 7f370bfbf740 DEBUG --------------------------------------------------------------------------------
cephadm ['--image', 'quay.io/ceph/ceph@sha256:0560b16bec6e84345f29fb6693cd2430884e6efff16a95d5bdd0bb06d7661c45', 'ls']
2022-12-08 00:15:20,100 7fdca25ac740 INFO Inferring fsid 0f3cd66c-74e5-11ed-813b-901b0e95a162
2022-12-08 00:15:20,121 7fdca25ac740 DEBUG /usr/bin/docker: stdout quay.io/ceph/ceph@sha256:0560b16bec6e84345f29fb6693cd2430884e6efff16a95d5bdd0bb06d7661c45|cc65afd6173a|v17|2022-10-18 01:41:41 +0200 CEST
2022-12-08 00:15:22,253 7f6f2e30a740 DEBUG --------------------------------------------------------------------------------
cephadm ['gather-facts']
2022-12-08 00:15:22,482 7f82221ce740 DEBUG --------------------------------------------------------------------------------
cephadm ['--image', 'quay.io/ceph/ceph@sha256:0560b16bec6e84345f29fb6693cd2430884e6efff16a95d5bdd0bb06d7661c45', 'list-networks']
2022-12-08 00:15:24,261 7fdca25ac740 DEBUG Using container info for daemon 'mon'
2022-12-08 00:15:24,261 7fdca25ac740 INFO Using ceph image with id 'cc65afd6173a' and tag 'v17' created on 2022-10-18 01:41:41 +0200 CEST
quay.io/ceph/ceph@sha256:0560b16bec6e84345f29fb6693cd2430884e6efff16a95d5bdd0bb06d7661c45
ceph-volume.logproducción:
[2022-12-07 23:24:00,496][ceph_volume.main][INFO ] Running command: ceph-volume inventory
[2022-12-07 23:24:00,499][ceph_volume.util.system][INFO ] Executable lvs found on the host, will use /sbin/lvs
[2022-12-07 23:24:00,499][ceph_volume.process][INFO ] Running command: nsenter --mount=/rootfs/proc/1/ns/mnt --ipc=/rootfs/proc/1/ns/ipc --net=/rootfs/proc/1/ns/net --uts=/rootfs/proc/1/ns/uts /sbin/lvs --noheadings --readonly --separator=";" -a --units=b --nosuffix -S -o lv_tags,lv_path,lv_name,vg_name,lv_uuid,lv_size
[2022-12-07 23:24:00,560][ceph_volume.process][INFO ] Running command: /usr/bin/lsblk -P -o NAME,KNAME,PKNAME,MAJ:MIN,FSTYPE,MOUNTPOINT,LABEL,UUID,RO,RM,MODEL,SIZE,STATE,OWNER,GROUP,MODE,ALIGNMENT,PHY-SEC,LOG-SEC,ROTA,SCHED,TYPE,DISC-ALN,DISC-GRAN,DISC-MAX,DISC-ZERO,PKNAME,PARTLABEL
[2022-12-07 23:24:00,569][ceph_volume.process][INFO ] stdout NAME="sda" KNAME="sda" PKNAME="" MAJ:MIN="8:0" FSTYPE="" MOUNTPOINT="" LABEL="" UUID="" RO="0" RM="1" MODEL="Crucial_CT500MX2" SIZE="465.8G" STATE="running" OWNER="root" GROUP="disk" MODE="brw-rw----" ALIGNMENT="0" PHY-SEC="4096" LOG-SEC="512" ROTA="0" SCHED="mq-deadline" TYPE="disk" DISC-ALN="0" DISC-GRAN="4K" DISC-MAX="2G" DISC-ZERO="0" PKNAME="" PARTLABEL=""
[2022-12-07 23:24:00,570][ceph_volume.process][INFO ] stdout NAME="sda1" KNAME="sda1" PKNAME="sda" MAJ:MIN="8:1" FSTYPE="swap" MOUNTPOINT="[SWAP]" LABEL="" UUID="51f95805-2d5f-4cba-a885-775a0c19ad53" RO="0" RM="1" MODEL="" SIZE="32G" STATE="" OWNER="root" GROUP="disk" MODE="brw-rw----" ALIGNMENT="0" PHY-SEC="4096" LOG-SEC="512" ROTA="0" SCHED="mq-deadline" TYPE="part" DISC-ALN="0" DISC-GRAN="4K" DISC-MAX="2G" DISC-ZERO="0" PKNAME="sda" PARTLABEL=""
[2022-12-07 23:24:00,570][ceph_volume.process][INFO ] stdout NAME="sda2" KNAME="sda2" PKNAME="sda" MAJ:MIN="8:2" FSTYPE="ext3" MOUNTPOINT="/rootfs/boot" LABEL="" UUID="676438b6-3214-4c05-bc6b-94bd7a88c26f" RO="0" RM="1" MODEL="" SIZE="1G" STATE="" OWNER="root" GROUP="disk" MODE="brw-rw----" ALIGNMENT="0" PHY-SEC="4096" LOG-SEC="512" ROTA="0" SCHED="mq-deadline" TYPE="part" DISC-ALN="0" DISC-GRAN="4K" DISC-MAX="2G" DISC-ZERO="0" PKNAME="sda" PARTLABEL=""
[2022-12-07 23:24:00,570][ceph_volume.process][INFO ] stdout NAME="sda3" KNAME="sda3" PKNAME="sda" MAJ:MIN="8:3" FSTYPE="ext4" MOUNTPOINT="/rootfs" LABEL="" UUID="a251c9b0-a91c-4768-bd42-5730e032ce58" RO="0" RM="1" MODEL="" SIZE="432.8G" STATE="" OWNER="root" GROUP="disk" MODE="brw-rw----" ALIGNMENT="0" PHY-SEC="4096" LOG-SEC="512" ROTA="0" SCHED="mq-deadline" TYPE="part" DISC-ALN="0" DISC-GRAN="4K" DISC-MAX="2G" DISC-ZERO="0" PKNAME="sda" PARTLABEL=""
[2022-12-07 23:24:00,570][ceph_volume.process][INFO ] stdout NAME="sdb" KNAME="sdb" PKNAME="" MAJ:MIN="8:16" FSTYPE="" MOUNTPOINT="" LABEL="" UUID="" RO="0" RM="1" MODEL="Crucial_CT500MX2" SIZE="465.8G" STATE="running" OWNER="root" GROUP="disk" MODE="brw-rw----" ALIGNMENT="0" PHY-SEC="4096" LOG-SEC="512" ROTA="0" SCHED="mq-deadline" TYPE="disk" DISC-ALN="0" DISC-GRAN="4K" DISC-MAX="2G" DISC-ZERO="0" PKNAME="" PARTLABEL=""
[2022-12-07 23:24:00,573][ceph_volume.util.system][INFO ] Executable pvs found on the host, will use /sbin/pvs
[2022-12-07 23:24:00,573][ceph_volume.process][INFO ] Running command: nsenter --mount=/rootfs/proc/1/ns/mnt --ipc=/rootfs/proc/1/ns/ipc --net=/rootfs/proc/1/ns/net --uts=/rootfs/proc/1/ns/uts /sbin/pvs --noheadings --readonly --units=b --nosuffix --separator=";" -o pv_name,vg_name,pv_count,lv_count,vg_attr,vg_extent_count,vg_free_count,vg_extent_size
Respuesta1
Después de buscar durante un tiempo y no poder detectar los dispositivos SAS en mi nodo, logré activar mi disco duro como OSD agregándolos manualmente con los siguientes comandos:
cephadm shell
ceph orch daemon add osd --method raw host1:/dev/sda