Isolamento di Ultra-M e sostituzione del disco guasto dal cluster di memoria/cache - vEPC
Sommario
Introduzione
In questo documento vengono descritti i passaggi da eseguire per isolare e sostituire il disco OSD dal cluster di memoria cache/archiviazione ospitato su un sistema OSD (Object Storage Disk)-Compute in una configurazione Ultra-M.
Premesse
Ultra-M è una soluzione di base di pacchetti mobili preconfezionata e convalidata, progettata per semplificare l'installazione di VNF. OpenStack è Virtualized Infrastructure Manager (VIM) per Ultra-M ed è costituito dai seguenti tipi di nodi:
- Calcola
- OSD - Calcolo
- Controller
- Piattaforma OpenStack - Director (OSPD)
L'architettura di alto livello di Ultra-M e i componenti coinvolti sono illustrati in questa immagine:
Architettura UltraMQuesto documento è destinato al personale Cisco che ha familiarità con la piattaforma Cisco Ultra-M e descrive in dettaglio i passaggi richiesti da eseguire a livello di OpenStack al momento della sostituzione del server OSPD.
Abbreviazioni
| VNF | Funzione di rete virtuale |
| CF | Funzione di controllo |
| SF | Funzione di servizio |
| ESC | Elastic Service Controller |
| MOP | Metodo |
| OSD | Dischi Object Storage |
| HDD | Unità hard disk |
| SSD | Unità a stato solido |
| VIM | Virtual Infrastructure Manager |
| VM | Macchina virtuale |
| EM | Gestione elementi |
| UAS | Ultra Automation Services |
| UUID | Identificatore univoco universale |
Flusso di lavoro del piano di mobilità
Verifiche integrità prerequisiti
1. Utilizzare il comando Ceph-disk list per comprendere la mappatura dell'OSD su Journal e identificare il disco da isolare e sostituire.
[heat-admin@pod1-osd-compute-3 ~]$ sudo ceph-disk list
/dev/sda :
/dev/sda1 other, iso9660
/dev/sda2 other, xfs, mounted on /
/dev/sdb :
/dev/sdb1 ceph journal, for /dev/sdc1
/dev/sdb3 ceph journal, for /dev/sdd1
/dev/sdb2 ceph journal, for /dev/sde1
/dev/sdb4 ceph journal, for /dev/sdf1
/dev/sdc :
/dev/sdc1 ceph data, active, cluster ceph, osd.1, journal /dev/sdb1
/dev/sdd :
/dev/sdd1 ceph data, active, cluster ceph, osd.7, journal /dev/sdb3
/dev/sde :
/dev/sde1 ceph data, active, cluster ceph, osd.4, journal /dev/sdb2
/dev/sdf :
/dev/sdf1 ceph data, active, cluster ceph, osd.10, journal /dev/sdb4
2. Verificare l'integrità della cache e la mappatura della struttura OSD prima di procedere con l'isolamento del disco OSD identificato.
[heat-admin@pod1-osd-compute-3 ~]$ sudo ceph -s
cluster eb2bb192-b1c9-11e6-9205-525400330666
health HEALTH_OK
1 mons down, quorum 0,1 pod1-controller-0,pod1-controller-1
monmap e1: 3 mons at {pod1-controller-0=11.118.0.10:6789/0,pod1-controller-1=11.118.0.11:6789/0,pod1-controller-2=11.118.0.12:6789/0}
election epoch 28, quorum 0,1 pod1-controller-0,pod1-controller-1
osdmap e709: 12 osds: 12 up, 12 in
flags sortbitwise,require_jewel_osds
pgmap v941813: 704 pgs, 6 pools, 490 GB data, 163 kobjects
1470 GB used, 11922 GB / 13393 GB avail
704 active+clean
client io 58580 B/s wr, 0 op/s rd, 7 op/s wr
[heat-admin@pod1-osd-compute-3 ~]$ sudo ceph osd tree
ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY
-1 13.07996 root default
-2 4.35999 host pod1-osd-compute-0
0 1.09000 osd.0 up 1.00000 1.00000
3 1.09000 osd.3 up 1.00000 1.00000
6 1.09000 osd.6 up 1.00000 1.00000
9 1.09000 osd.9 up 1.00000 1.00000
-3 0 host pod1-osd-compute-1
-4 4.35999 host pod1-osd-compute-2
2 1.09000 osd.2 up 1.00000 1.00000
5 1.09000 osd.5 up 1.00000 1.00000
8 1.09000 osd.8 up 1.00000 1.00000
11 1.09000 osd.11 up 1.00000 1.00000
-5 4.35999 host pod1-osd-compute-3
1 1.09000 osd.1 up 1.00000 1.00000
4 1.09000 osd.4 up 1.00000 1.00000
7 1.09000 osd.7 up 1.00000 1.00000
10 1.09000 osd.10 up 1.00000 1.00000
Isolamento e rimozione del disco OSD difettoso dal cluster
1. Disabilitare e interrompere il processo OSD.
[heat-admin@pod1-osd-compute-3 ~]$ sudo systemctl disable ceph-osd@7
[heat-admin@pod1-osd-compute-3 ~]$ sudo systemctl stop ceph-osd@7
2. Contrassegnare l'OSD.
[heat-admin@pod1-osd-compute-3 ~]$ sudo su
[root@pod1-osd-compute-3 heat-admin]# ceph osd set noout
set noout
[root@pod1-osd-compute-3 heat-admin]# ceph osd set norebalance
set norebalance
[root@pod1-osd-compute-3 heat-admin]# ceph osd out 7
marked out osd.7.
3. Verificare che l'OSD sia contrassegnato e attendere che il ribilanciamento Ceph proceda.
[root@pod1-osd-compute-3 heat-admin]# watch -n1 ceph -s
95 active+undersized+degraded+remapped+wait_backfill
28 active+recovery_wait+degraded
2 active+undersized+degraded+remapped+backfilling
1 active+recovering+degraded
2 active+undersized+degraded+remapped+backfilling
1 active+recovering+degraded
2 active+undersized+degraded+remapped+backfilling
67 active+undersized+degraded+remapped+wait_backfill
3 active+undersized+degraded+remapped+backfilling
24 active+undersized+degraded+remapped+wait_backfill
22 active+undersized+degraded+remapped+wait_backfill
1 active+undersized+degraded+remapped+backfilling
8 active+undersized+degraded+remapped+wait_backfill
4. Rimuovere la chiave di autenticazione per l'OSD.
[root@pod1-osd-compute-3 heat-admin]# ceph auth del osd.7
updated
5. Verificare che i tasti per OSD.7 non siano elencati.
[root@pod1-osd-compute-3 heat-admin]# ceph auth list
installed auth entries:
osd.0
key: AQCgpB5blV9dNhAAzDN1SVdnuJyTN2f7PAdtFw==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.1
key: AQBdwyBbbuD6IBAAcvG+oQOz5vk62faOqv/CEw==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.10
key: AQCwwyBb7xvHJhAAZKPprXWT7UnvnAXBV9W2rg==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.11
key: AQDxpB5b9/rGFRAAkcCEkpSN1YZVDdeW+Bho7w==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.2
key: AQCppB5btekoNBAAACoWpDz0VL9bZfyIygDpBQ==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.3
key: AQC4pB5bBaUlORAAhi3KPzetwvWhYGnerAkAsg==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.4
key: AQB1wyBbvMIQLRAAXefFVnZxMX6lVtObQt9KoA==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.5
key: AQDBpB5buKHqOhAAW1Q861qoYqW6fAYHlOxsLg==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.6
key: AQDQpB5b1BveFxAAfCLM3tvDUSnYneutyTmaEg==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.8
key: AQDZpB5bd4nlGRAAkkzbmGPnEDAWV0dUhrhE6w==
caps: [mon] allow profile osd
caps: [osd] allow *
osd.9
key: AQDopB5bKCZPGBAAfYtp1GLA7QIi/YxJa8O1yw==
caps: [mon] allow profile osd
caps: [osd] allow *
client.admin
key: AQDpmx5bAAAAABAA3hLK8O2tGgaAK+X2Lly5Aw==
caps: [mds] allow *
caps: [mon] allow *
caps: [osd] allow *
client.bootstrap-mds
key: AQBDpB5bjR1GJhAAB6CKKxXulve9WIiC6ZGXgA==
caps: [mon] allow profile bootstrap-mds
client.bootstrap-osd
key: AQDpmx5bAAAAABAA3hLK8O2tGgaAK+X2Lly5Aw==
caps: [mon] allow profile bootstrap-osd
client.bootstrap-rgw
key: AQBDpB5b7OWXHBAAlATmBAOX/QWW+2mLxPqlkQ==
caps: [mon] allow profile bootstrap-rgw
client.openstack
key: AQDpmx5bAAAAABAAULxfs9cYG1wkSVTjrtiaDg==
caps: [mon] allow r
caps: [osd] allow class-read object_prefix rbd_children, allow rwx pool=volumes, allow rwx pool=backups, allow rwx pool=vms, allow rwx pool=images, allow rwx pool=metrics
7. Rimuovere l'OSD dal cluster.
[root@pod1-osd-compute-3 heat-admin]# ceph osd rm 7
removed osd.7
8. Smontare il disco OSD da sostituire.
[root@pod1-osd-compute-3 heat-admin]# umount /var/lib/ceph/osd/ceph-7
9. Annullare la noscrub e la profonscrub.
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset noscrub
unset noscrub
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset nodeep-scrub
unset nodeep-scrub
10. Verificare lo stato di salute di Ceph e attendere che health-ok e tutti i PG tornino ad attivo+pulito.
[root@pod1-osd-compute-3 heat-admin]# ceph -s
cluster eb2bb192-b1c9-11e6-9205-525400330666
health HEALTH_WARN
28 pgs backfill_wait
4 pgs backfilling
5 pgs degraded
5 pgs recovery_wait
83 pgs stuck unclean
recovery 1697/516881 objects degraded (0.328%)
recovery 76428/516881 objects misplaced (14.786%)
noout,norebalance,sortbitwise,require_jewel_osds flag(s) set
1 mons down, quorum 0,1 pod1-controller-0,pod1-controller-1
monmap e1: 3 mons at {pod1-controller-0=11.118.0.10:6789/0,pod1-controller-1=11.118.0.11:6789/0,pod1-controller-2=11.118.0.12:6789/0}
election epoch 28, quorum 0,1 pod1-controller-0,pod1-controller-1
osdmap e877: 11 osds: 11 up, 11 in; 193 remapped pgs
flags noout,norebalance,sortbitwise,require_jewel_osds
pgmap v942974: 704 pgs, 6 pools, 490 GB data, 163 kobjects
1470 GB used, 10806 GB / 12277 GB avail
1697/516881 objects degraded (0.328%)
76428/516881 objects misplaced (14.786%)
511 active+clean
156 active+remapped
28 active+remapped+wait_backfill
5 active+recovery_wait+degraded+remapped
4 active+remapped+backfilling
client io 331 kB/s wr, 0 op/s rd, 56 op/s wr
Sostituire il disco OSD e creare un nuovo disco virtuale
1. Rimuovere l'unità difettosa e sostituirla con una nuova unità: Guida all'installazione e all'assistenza del server Cisco UCS C240 M4.
2. Verificare l'accesso a CIMC dell'OSD-Compute e controllare lo slot in cui l'OSD viene sostituito e mostrato in buono stato.
3. Creare un'unità virtuale per un nuovo disco rigido, deve essere un nuovo disco rigido senza metadati.
4. Verificare che il disco appena aggiunto sia nello stato Non configurato come valido.
Storage > Controller RAID modulare SAS Cisco 12G (SLOT-HBA) > Informazioni unità fisica
5. Selezionare l'opzione Crea unità virtuale da unità fisiche inutilizzate per creare il DVD.
Storage > Controller RAID modulare SAS Cisco 12G (SLOT-HBA)
6. Utilizzare Physical Drive 9 per creare un nuovo DVD e denominarlo OSD3.
Storage > Controller RAID modulare SAS Cisco 12G (SLOT-HBA) > Informazioni controller > Crea unità virtuale da unità fisiche inutilizzate
Storage > Controller RAID modulare SAS Cisco 12G (SLOT-HBA) > Informazioni controller > Crea unità virtuale da unità fisiche inutilizzate
7. Abilitare IPMI over LAN: Admin > Communication Services > Communication Services.
Abilitare IPMI over LAN: Amministrazione > Servizi di comunicazione > Servizi di comunicazione
8. Disabilitare l'HyperThreading: Compute > BIOS > Conimage BIOS > Advanced > Processor Configuration.
Disabilita hyperthreading: Compute > BIOS > Configure BIOS > Advanced > Processor Configuration
Aggiungere nuovamente l'OSD al cluster
1. Dopo aver sostituito un nuovo disco, eseguire partprobe per individuare il nuovo dispositivo.
[root@pod1-osd-compute-3 heat-admin]# partprobe
[root@pod1-osd-compute-3 heat-admin]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 278.5G 0 disk
|
-sda1 8:1 0 1M 0 part
-sda2 8:2 0 278.5G 0 part /
sdb 8:16 0 446.1G 0 disk
|
-sdb1 8:17 0 107G 0 part
-sdb2 8:18 0 107G 0 part
-sdb3 8:19 0 107G 0 part
-sdb4 8:20 0 107G 0 part
sdc 8:32 0 1.1T 0 disk
|
-sdc1 8:33 0 1.1T 0 part /var/lib/ceph/osd/ceph-1
sdd 8:48 0 1.1T 0 disk
|
-sdd1 8:49 0 1.1T 0 part
sde 8:64 0 1.1T 0 disk
|
-sde1 8:65 0 1.1T 0 part /var/lib/ceph/osd/ceph-4
sdf 8:80 0 1.1T 0 disk
|
-sdf1 8:81 0 1.1T 0 part /var/lib/ceph/osd/ceph-10
2. Individuare un dispositivo disponibile sul server.
[root@pod1-osd-compute-3 heat-admin]# fdisk -l
Disk /dev/sda: 299.0 GB, 298999349248 bytes, 583983104 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000b5e87
Device Boot Start End Blocks Id System
/dev/sda1 2048 4095 1024 83 Linux
/dev/sda2 * 4096 583983070 291989487+ 83 Linux
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdb: 479.0 GB, 478998953984 bytes, 935544832 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 224462847 107G unknown ceph journal
2 224462848 448923647 107G unknown ceph journal
3 448923648 673384447 107G unknown ceph journal
4 673384448 897845247 107G unknown ceph journal
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdd: 1199.0 GB, 1198999470080 bytes, 2341795840 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 2341795806 1.1T unknown ceph data
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 1199.0 GB, 1198999470080 bytes, 2341795840 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 2341795806 1.1T unknown ceph data
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sde: 1199.0 GB, 1198999470080 bytes, 2341795840 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 2341795806 1.1T unknown ceph data
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdf: 1199.0 GB, 1198999470080 bytes, 2341795840 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
# Start End Size Type Name
1 2048 2341795806 1.1T unknown ceph data
[root@pod1-osd-compute-3 heat-admin]#
3. Utilizzare l'elenco dei dischi di cache per identificare la mappa della partizione del disco del journal.
[root@pod1-osd-compute-3 heat-admin]# ceph-disk list
/dev/sda :
/dev/sda1 other, iso9660
/dev/sda2 other, xfs, mounted on /
/dev/sdb :
/dev/sdb1 ceph journal, for /dev/sdc1
/dev/sdb3 ceph journal
/dev/sdb2 ceph journal, for /dev/sde1
/dev/sdb4 ceph journal, for /dev/sdf1
/dev/sdc :
/dev/sdc1 ceph data, active, cluster ceph, osd.1, journal /dev/sdb1
/dev/sdd :
/dev/sdd1 other, xfs
/dev/sde :
/dev/sde1 ceph data, active, cluster ceph, osd.4, journal /dev/sdb2
/dev/sdf :
/dev/sdf1 ceph data, active, cluster ceph, osd.10, journal /dev/sdb4
4. Creare il disco di cache e aggiungerlo nuovamente al cluster.
[root@pod1-osd-compute-3 heat-admin]# ceph-disk --setuser ceph --setgroup ceph prepare --fs-type xfs /dev/sdd /dev/sdb3
prepare_device: OSD will not be hot-swappable if journal is not the same device as the osd data
Creating new GPT entries.
The operation has completed successfully.
meta-data=/dev/sdd1 isize=2048 agcount=4, agsize=73181055 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=292724219, imaxpct=5
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=142931, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.
#####Hint###
where - sdd is new drive added as OSD
where – sdb3 is journal disk partition number
mapping is sdc1 for sdc, sdd1 for sdd, sde1 for sde
sdf1 for sdf (and so on)
5. Attivare i Ceph-disk e annullare l'impostazione dei flag noscrub e nodeep-scrub.
[root@pod1-osd-compute-3 heat-admin]# ceph-disk activate-all
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset noout
unset noout
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset norebalance
unset norebalance
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset noscrub
unset noscrub
[root@pod1-osd-compute-3 heat-admin]# ceph osd unset nodeep-scrub
unset nodeep-scrub
6. Attendere il completamento del ribilanciamento e verificare che lo stato di salute di Ceph e OSD tree sia corretto.
[root@pod1-osd-compute-3 heat-admin]# watch -n 3 ceph -s
[heat-admin@pod1-osd-compute-3 ~]$ sudo ceph -s
cluster eb2bb192-b1c9-11e6-9205-525400330666
health HEALTH_OK
1 mons down, quorum 0,1 pod1-controller-0,pod1-controller-1
monmap e1: 3 mons at {pod1-controller-0=11.118.0.10:6789/0,pod1-controller-1=11.118.0.11:6789/0,pod1-controller-2=11.118.0.12:6789/0}
election epoch 28, quorum 0,1 pod1-controller-0,pod1-controller-1
osdmap e709: 12 osds: 12 up, 12 in
flags sortbitwise,require_jewel_osds
pgmap v941813: 704 pgs, 6 pools, 490 GB data, 163 kobjects
1470 GB used, 11922 GB / 13393 GB avail
704 active+clean
client io 58580 B/s wr, 0 op/s rd, 7 op/s wr
[heat-admin@pod1-osd-compute-3 ~]$ sudo ceph osd tree
ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY
-1 13.07996 root default
-2 4.35999 host pod1-osd-compute-0
0 1.09000 osd.0 up 1.00000 1.00000
3 1.09000 osd.3 up 1.00000 1.00000
6 1.09000 osd.6 up 1.00000 1.00000
9 1.09000 osd.9 up 1.00000 1.00000
-4 4.35999 host pod1-osd-compute-2
2 1.09000 osd.2 up 1.00000 1.00000
5 1.09000 osd.5 up 1.00000 1.00000
8 1.09000 osd.8 up 1.00000 1.00000
11 1.09000 osd.11 up 1.00000 1.00000
-5 4.35999 host pod1-osd-compute-3
1 1.09000 osd.1 up 1.00000 1.00000
4 1.09000 osd.4 up 1.00000 1.00000
7 1.09000 osd.7 up 1.00000 1.00000
10 1.09000 osd.10 up 1.00000 1.00000
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