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reseteo completo del cluster. CEPH con arbitro

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This commit is contained in:
Txavor
2025-08-29 17:36:52 +02:00
parent 4389c53a2c
commit dad001ae56
13 changed files with 693 additions and 263 deletions
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180
rook/cluster/ceph-cluster-final-final.yaml Normal file
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@@ -0,0 +1,180 @@
apiVersion: ceph.rook.io/v1
kind: CephCluster
metadata:
name: rook-ceph
namespace: rook-ceph
spec:
cephVersion:
image: quay.io/ceph/ceph:v18
cleanupPolicy:
wipeDevicesFromOtherClusters: true
sanitizeDisks:
method: quick
dataSource: zero
crashCollector: {}
csi:
cephfs: {}
readAffinity:
enabled: false
dashboard:
enabled: true
dataDirHostPath: /var/lib/rook
disruptionManagement: {}
external: {}
healthCheck:
daemonHealth:
mon: {}
osd: {}
status: {}
logCollector: {}
mgr:
count: 2
mon:
allowMultiplePerNode: false
count: 3
monitoring: {}
network:
multiClusterService: {}
placement:
mgr:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- site-a
- site-b
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: app
operator: In
values:
- rook-ceph-mgr
topologyKey: kubernetes.io/hostname
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mgr
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
mon:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- site-a
- site-b
- arbiter
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mon
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
security:
cephx:
csi: {}
daemon: {}
rbdMirrorPeer: {}
keyRotation:
enabled: false
kms: {}
storage:
flappingRestartIntervalHours: 0
migration: {}
nodes:
- devices:
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405
name: srvfkvm01
resources: {}
- devices:
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127eef88828273
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127f879197de32
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128081a076ba0c
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128114a93e33b9
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94300301281a7b1fc151a
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128235ba79d801
name: srvfkvm02
resources: {}
- devices:
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128aef3bb4e0ae
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b0e3d8bc1dc
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b2b3f446dd7
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b4440c2d027
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b5e42510c2a
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b7d442e592c
name: srvfkvm03
resources: {}
- devices:
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c003012887ebfca6752
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c0030128896e360075f
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288ac038600d4
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441
- config:
deviceClass: ssd
fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f
name: srvfkvm04
resources: {}
store: {}
useAllDevices: false

133
rook/cluster/ceph-cluster-final.yaml Normal file
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@@ -0,0 +1,133 @@
apiVersion: ceph.rook.io/v1
kind: CephCluster
metadata:
annotations: {}
finalizers:
- cephcluster.ceph.rook.io
name: rook-ceph
namespace: rook-ceph
spec:
cephVersion:
image: quay.io/ceph/ceph:v18
cleanupPolicy:
sanitizeDisks: {}
wipeDevicesFromOtherClusters: false
crashCollector: {}
csi:
cephfs: {}
readAffinity:
enabled: false
dashboard:
enabled: true
dataDirHostPath: /var/lib/rook
disruptionManagement: {}
external: {}
healthCheck:
daemonHealth:
mon: {}
osd: {}
status: {}
logCollector: {}
mgr:
count: 2
mon:
allowMultiplePerNode: false
count: 3
monitoring: {}
network:
multiClusterService: {}
placement:
mgr:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- site-a
- site-b
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: app
operator: In
values:
- rook-ceph-mgr
topologyKey: kubernetes.io/hostname
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mgr
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
mon:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- site-a
- site-b
- arbiter
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mon
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
security:
cephx:
csi: {}
daemon: {}
rbdMirrorPeer: {}
keyRotation:
enabled: false
kms: {}
storage:
flappingRestartIntervalHours: 0
migration: {}
nodes:
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405
name: srvfkvm01
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127eef88828273
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127f879197de32
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128081a076ba0c
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128114a93e33b9
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94300301281a7b1fc151a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128235ba79d801
name: srvfkvm02
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128aef3bb4e0ae
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b0e3d8bc1dc
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b2b3f446dd7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b4440c2d027
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b5e42510c2a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b7d442e592c
name: srvfkvm03
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c003012887ebfca6752
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c0030128896e360075f
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288ac038600d4
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f
name: srvfkvm04
resources: {}
store: {}
useAllDevices: false

40
rook/cluster/ceph-cluster-inicial.yaml
View File

@@ -8,25 +8,50 @@ spec:
image: quay.io/ceph/ceph:v19.2.3
dataDirHostPath: /var/lib/rook
# Redes: pública por VLAN 40 (4.0), cluster por VLAN 30 (3.0)
network:
provider: host
addressRanges:
public:
- "192.168.4.0/24"
cluster:
- "192.168.4.0/24"
mgr:
count: 2
- "192.168.3.0/24"
mon:
count: 3
count: 5
allowMultiplePerNode: false
mgr:
count: 2
dashboard:
enabled: true
# Evita OSDs en el futuro nodo árbitro (cuando lo añadas)
placement:
# Permite programar en nodos con taint de control-plane
all:
tolerations:
- key: "node-role.kubernetes.io/control-plane"
operator: "Exists"
effect: "NoSchedule"
# MON: fija 1 por cada host 01–05 y evita colocalizar
mon:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values: ["srvfkvm01","srvfkvm02","srvfkvm03","srvfkvm04","srvfkvm05"]
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchLabels:
app: rook-ceph-mon
topologyKey: kubernetes.io/hostname
# OSD: solo en zonas de datos (evita árbitro)
osd:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
@@ -36,6 +61,7 @@ spec:
operator: In
values: ["site-a","site-b"]
# Preferencia de MGR (opcional)
mgr:
nodeAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
@@ -46,6 +72,9 @@ spec:
operator: In
values: ["srvfkvm01","srvfkvm04"]
cleanupPolicy:
wipeDevicesFromOtherClusters: true
storage:
useAllNodes: false
useAllDevices: false
@@ -85,3 +114,4 @@ spec:
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f

87
rook/cluster/ceph-cluster.yaml Normal file
View File

@@ -0,0 +1,87 @@
apiVersion: ceph.rook.io/v1
kind: CephCluster
metadata:
annotations: {}
finalizers:
- cephcluster.ceph.rook.io
name: rook-ceph
namespace: rook-ceph
spec:
cephVersion:
image: quay.io/ceph/ceph:v18
cleanupPolicy:
sanitizeDisks: {}
wipeDevicesFromOtherClusters: false
crashCollector: {}
csi:
cephfs: {}
readAffinity:
enabled: false
dashboard:
enabled: true
dataDirHostPath: /var/lib/rook
disruptionManagement: {}
external: {}
healthCheck:
daemonHealth:
mon: {}
osd: {}
status: {}
logCollector: {}
mgr:
count: 1
mon:
count: 3
monitoring: {}
network:
multiClusterService: {}
security:
cephx:
csi: {}
daemon: {}
rbdMirrorPeer: {}
keyRotation:
enabled: false
kms: {}
storage:
flappingRestartIntervalHours: 0
migration: {}
nodes:
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405
name: srvfkvm01
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127eef88828273
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127f879197de32
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128081a076ba0c
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128114a93e33b9
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94300301281a7b1fc151a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128235ba79d801
name: srvfkvm02
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128aef3bb4e0ae
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b0e3d8bc1dc
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b2b3f446dd7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b4440c2d027
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b5e42510c2a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b7d442e592c
name: srvfkvm03
resources: {}
- devices:
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c003012887ebfca6752
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c0030128896e360075f
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288ac038600d4
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f
name: srvfkvm04
resources: {}
store: {}
useAllDevices: false

31
rook/cluster/inicio.yaml Normal file
View File

@@ -0,0 +1,31 @@
apiVersion: ceph.rook.io/v1
kind: CephCluster
metadata:
name: rook-ceph
namespace: rook-ceph
spec:
cephVersion:
# usa la misma versión que venías usando
image: quay.io/ceph/ceph:v18
dataDirHostPath: /var/lib/rook
mon:
count: 3
allowMultiplePerNode: false
mgr:
count: 1
dashboard:
enabled: true
crashCollector:
disable: false
storage:
useAllNodes: false
useAllDevices: false
nodes:
- name: srvfkvm01
devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405

4
rook/ingress/dashboard.yaml
View File

@@ -5,8 +5,8 @@ metadata:
namespace: rook-ceph
annotations:
cert-manager.io/cluster-issuer: letsencrypt-prod
nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
nginx.ingress.kubernetes.io/whitelist-source-range: "192.168.200.0/24,192.168.0.0/24,10.244.0.0/16,192.168.4.0/24"
nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
# nginx.ingress.kubernetes.io/whitelist-source-range: "192.168.200.0/24,192.168.0.0/24,10.244.0.0/16,192.168.4.0/24"
spec:
ingressClassName: nginx
tls:

9
rook/pools/ceph-blockpool-rbd-2x2.yaml
View File

@@ -1,9 +0,0 @@
apiVersion: ceph.rook.io/v1
kind: CephBlockPool
metadata:
name: rbd-2x2-sites
namespace: rook-ceph
spec:
failureDomain: zone
replicated:
size: 4

18
rook/pools/ceph-blockpool-rbd.yaml Normal file
View File

@@ -0,0 +1,18 @@
apiVersion: ceph.rook.io/v1
kind: CephBlockPool
metadata:
name: rbd-2x2-sites
namespace: rook-ceph
spec:
deviceClass: ssd
failureDomain: zone
replicated:
size: 4
replicasPerFailureDomain: 2
subFailureDomain: host
requireSafeReplicaSize: true
parameters:
pg_autoscale_mode: "on"
min_size: "2"
mirroring:
enabled: false

446
rook/readme.md
View File

@@ -1,60 +1,26 @@
# Despliegue de Rook‑Ceph en clúster **Kubernetes** (SUSE) con discos locales (Bluestore)
# Despliegue de **Rook‑Ceph** en Kubernetes (SUSE) con 2 zonas + **árbitro**
> Guía actualizada para un clúster **Kubernetes** (no K3s) en SUSE, con 4 nodos iniciales y **futura ampliación a stretch** con un quinto nodo **árbitro**. Discos locales (RAID/HBA), red de almacenamiento dedicada **VLAN 30 – 192.168.3.0/24**, y exposición del dashboard **vía Ingress NGINX** con TLS.
> Guía basada en el estado **actual** del clúster (A/B + *arbiter*), sin fase previa “sin árbitro”. Discos locales (Bluestore), distribución por **zona**, 3 MON (uno por zona) y 2 MGR (uno por site A y otro por site B). Pool RBD con **size=4** (2+2 por zona) y **min
> to**=2.
---
## 1) Requisitos previos
## 1) Topología y requisitos
* 4 nodos Kubernetes operativos: `srvfkvm01`, `srvfkvm02`, `srvfkvm03`, `srvfkvm04` (control-plane o mixtos)
* Cada nodo con **6 discos** dedicados (\~894 GB) para Ceph
* Acceso a Internet desde los nodos
* Red de almacenamiento dedicada **VLAN 30 – 192.168.3.0/24** (Ceph public/cluster)
* `kubectl` configurado y permisos de admin
* Nodos y zonas:
> **Nota de versiones**: ejemplos probados con Rook 1.17.x y Ceph v19.x (Squid) o v18.x (Reef). En los manifiestos se usa una imagen estable.
* **site-a**: `srvfkvm01`, `srvfkvm02`
* **site-b**: `srvfkvm03`, `srvfkvm04`
* **arbiter**: `srvfkvm05` *(sin OSDs)*
* Cada nodo de datos con **6 discos** dedicados a Ceph (usar rutas persistentes `/dev/disk/by-id/...`).
* Acceso a Internet desde los nodos. `kubectl` con permisos de admin.
* Versiones empleadas: **Rook v1.18.x**, **Ceph v18 (Reef)**.
> **Objetivo de resiliencia**: tolerar la caída completa de un site (A **o** B). El árbitro aloja MON (y opcionalmente MGR), **no** OSDs.
---
## 2) Preparar discos en SUSE (solo discos de datos)
Instala utilidades necesarias en **cada nodo**:
```bash
sudo zypper -n install gdisk util-linux
```
Limpieza segura **solo** de `sdb…sdg` (ajusta si difiere):
```bash
set -euo pipefail
DISKS=(sdb sdc sdd sde sdf sdg)
for d in "${DISKS[@]}"; do
echo ">>> /dev/$d"
sudo sgdisk --zap-all /dev/$d || true # limpia GPT/MBR
sudo wipefs -a /dev/$d || true # borra firmas FS/LVM
sudo blkdiscard -f /dev/$d || \ # TRIM (si soporta)
sudo dd if=/dev/zero of=/dev/$d bs=1M count=10 oflag=direct,dsync
done
```
Obtén las rutas **persistentes** *by‑id* para cada disco (en cada nodo):
```bash
for d in sdb sdc sdd sde sdf sdg; do
echo "=== $HOSTNAME -> $d ==="
ls -l /dev/disk/by-id/ | awk -v d="$d" '$NF ~ ("/" d "$") {print "/dev/disk/by-id/"$9}'
done
```
> **Usa siempre** `/dev/disk/by-id/...` en los manifiestos (campo `fullpath:`) para evitar cambios de letra.
---
## 3) Etiquetado de nodos por **site**
Vamos a distribuir por zonas lógicas desde el inicio (A/B). El árbitro llegará después.
## 2) Etiquetar nodos por **zona**
```bash
# SITE A
@@ -64,35 +30,72 @@ kubectl label node srvfkvm02 topology.kubernetes.io/zone=site-a --overwrite
# SITE B
kubectl label node srvfkvm03 topology.kubernetes.io/zone=site-b --overwrite
kubectl label node srvfkvm04 topology.kubernetes.io/zone=site-b --overwrite
```
> Cuando exista el nodo **árbitro**, se etiquetará como `topology.kubernetes.io/zone=arbiter`.
# ÁRBITRO
kubectl label node srvfkvm05 topology.kubernetes.io/zone=arbiter --overwrite
```
---
## 4) Instalar Rook (CRDs, comunes y operador)
## 3) Preparar discos (SUSE)
Instalar utilidades (en **cada nodo de datos**):
```bash
sudo zypper -n install gdisk util-linux
```
Limpiar de forma segura (ajusta IDs según cada host):
```bash
# Ejemplo genérico; usa *by-id* reales de cada nodo
for d in \
/dev/disk/by-id/wwn-...a \
/dev/disk/by-id/wwn-...b \
/dev/disk/by-id/wwn-...c \
/dev/disk/by-id/wwn-...d \
/dev/disk/by-id/wwn-...e \
/dev/disk/by-id/wwn-...f; do
echo ">>> $d"
sudo wipefs -a "$d" || true
# Cabecera 100MiB
sudo dd if=/dev/zero of="$d" bs=1M count=100 oflag=direct,dsync || true
# Cola 100MiB
real=$(readlink -f "$d"); dev=$(basename "$real")
sz=$(cat /sys/class/block/$dev/size); tail=$((100*1024*1024/512)); seek=$((sz - tail)); ((seek<0)) && seek=0
sudo dd if=/dev/zero of="$real" bs=512 seek="$seek" count="$tail" oflag=direct,dsync || true
sudo partprobe "$real" || true; sudo udevadm settle || true
done
```
> **Consejo**: guarda las rutas *by‑id* exactas de cada nodo; son las que se usarán en el `CephCluster`.
---
## 4) Instalar Rook (CRDs + operador)
```bash
kubectl create namespace rook-ceph || true
# Clonar repo oficial (opcional para tener toolbox/ejemplos)
git clone https://github.com/rook/rook.git
cd rook/deploy/examples
# CRDs + common + operator (Rook v1.18.x)
kubectl apply -f https://raw.githubusercontent.com/rook/rook/v1.18.0/deploy/examples/crds.yaml \
-f https://raw.githubusercontent.com/rook/rook/v1.18.0/deploy/examples/common.yaml \
-f https://raw.githubusercontent.com/rook/rook/v1.18.0/deploy/examples/operator.yaml
kubectl apply -f crds.yaml -f common.yaml -f operator.yaml
```
Comprueba el operador:
```bash
kubectl -n rook-ceph get pods | grep operator
```
> **Toolbox** (útil para diagnosticar):
>
> ```bash
> kubectl -n rook-ceph apply -f https://raw.githubusercontent.com/rook/rook/v1.18.0/deploy/examples/toolbox.yaml
> ```
---
## 5) CephCluster – 4 nodos, discos *by‑id*, red de storage (VLAN 30)
## 5) Manifiesto **CephCluster** (A/B + árbitro, OSDs solo en A/B)
Archivo `cluster/ceph-cluster.yaml`:
Archivo `cluster/ceph-cluster.yaml` **adaptado a tu entorno actual**:
```yaml
apiVersion: ceph.rook.io/v1
@@ -102,72 +105,103 @@ metadata:
namespace: rook-ceph
spec:
cephVersion:
image: quay.io/ceph/ceph:v19.2.3 # estable (puedes usar v18.2.x si prefieres)
image: quay.io/ceph/ceph:v18
dataDirHostPath: /var/lib/rook
# Red: usamos hostNetworking y restringimos a VLAN de storage
network:
provider: host
addressRanges:
public:
- "192.168.3.0/24"
cluster:
- "192.168.3.0/24"
dashboard:
enabled: true
mgr:
count: 2
mon:
count: 3
allowMultiplePerNode: false
dashboard:
enabled: true
# No queremos OSDs en el futuro nodo árbitro
placement:
osd:
# MGR repartidos entre site-a y site-b
mgr:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values: ["site-a", "site-b"]
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values: ["site-a","site-b"]
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: app
operator: In
values: ["rook-ceph-mgr"]
topologyKey: kubernetes.io/hostname
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mgr
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
# MON uno por zona (site-a, site-b, arbiter)
mon:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values: ["site-a","site-b","arbiter"]
topologySpreadConstraints:
- labelSelector:
matchLabels:
app: rook-ceph-mon
maxSkew: 1
topologyKey: topology.kubernetes.io/zone
whenUnsatisfiable: DoNotSchedule
security:
cephx:
csi: {}
daemon: {}
rbdMirrorPeer: {}
storage:
useAllNodes: false
useAllDevices: false
nodes:
- name: srvfkvm01
devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5bb177a1716, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5dc196bd3a7, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d5f81b10f7ef, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d6151cca8afd, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d62f1e5e9699, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94b003012d64f204b2405, config: {deviceClass: ssd}}
- name: srvfkvm02
devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127eef88828273
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127f879197de32
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128081a076ba0c
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128114a93e33b9
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94300301281a7b1fc151a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128235ba79d801
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127eef88828273, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030127f879197de32, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128081a076ba0c, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128114a93e33b9, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d94300301281a7b1fc151a, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9430030128235ba79d801, config: {deviceClass: ssd}}
- name: srvfkvm03
devices:
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128aef3bb4e0ae
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b0e3d8bc1dc
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b2b3f446dd7
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b4440c2d027
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b5e42510c2a
- fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b7d442e592c
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128aef3bb4e0ae, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b0e3d8bc1dc, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b2b3f446dd7, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b4440c2d027, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b5e42510c2a, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x64cd98f036d9510030128b7d442e592c, config: {deviceClass: ssd}}
- name: srvfkvm04
devices:
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c003012887ebfca6752
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c0030128896e360075f
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288ac038600d4
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441
- fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c003012887ebfca6752, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c0030128896e360075f, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288ac038600d4, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288c62acb6efc, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288e456c6d441, config: {deviceClass: ssd}}
- { fullpath: /dev/disk/by-id/wwn-0x6ec2a72037894c00301288f976534b4f, config: {deviceClass: ssd}}
```
Aplicar y verificar:
@@ -177,13 +211,20 @@ kubectl apply -f cluster/ceph-cluster.yaml
kubectl -n rook-ceph get pods
```
> Instala el **toolbox** para diagnósticos: `kubectl -n rook-ceph apply -f rook/deploy/examples/toolbox.yaml`
> **Nota**: los MON deberían quedar uno en `site-a`, otro en `site-b` y otro en `arbiter`; los MGR en `site-a` y `site-b`. Los OSDs solo en A/B.
---
## 6) Pool RBD inicial (replica **4** sobre **hosts**) + StorageClass
## 6) Activar **Orchestrator** (backend Rook)
> Con 2 sites (A/B) y **sin** árbitro, **no** uses `failureDomain: zone` con `size: 4` o las PGs quedarán *undersized*. Empezamos con **`host`** y, cuando activemos **stretch**, pasaremos a `zone`.
```bash
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph orch set backend rook
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph orch status
```
---
## 7) Pool **RBD** 2×2 por **zona** + StorageClass
`pools/ceph-blockpool-rbd.yaml`:
@@ -194,9 +235,16 @@ metadata:
name: rbd-2x2-sites
namespace: rook-ceph
spec:
failureDomain: host
deviceClass: ssd
failureDomain: zone
replicated:
size: 4
size: 4 # 2 por site (A/B)
minSize: 2
replicasPerFailureDomain: 2
subFailureDomain: host
requireSafeReplicaSize: true
parameters:
pg_autoscale_mode: "on"
```
`storageclasses/rbd.yaml`:
@@ -226,47 +274,25 @@ allowVolumeExpansion: true
mountOptions: ["discard"]
```
Aplicar:
Aplicar y comprobar:
```bash
kubectl apply -f pools/ceph-blockpool-rbd.yaml
kubectl apply -f storageclasses/rbd.yaml
kubectl get sc
# Verificaciones rápidas
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd pool get rbd-2x2-sites size
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd pool get rbd-2x2-sites min_size
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph osd crush rule dump rbd-2x2-sites -f json-pretty
```
> Si creaste el pool inicialmente con `failureDomain: zone` y ves `active+undersized`, crea y asigna una **CRUSH rule** a host:
>
> ```bash
> kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc '
> set -e
> ceph osd crush rule create-replicated rbd-4x-host default host || true
> ceph osd pool set rbd-2x2-sites crush_rule rbd-4x-host
> ceph osd pool get rbd-2x2-sites crush_rule
> '
> ```
> La regla CRUSH generada elige **zona** y luego **host** (2 réplicas por zona). Con OSDs solo en A/B, el árbitro **no** aloja datos.
---
## 7) Marcar OSDs como **SSD** (si Ceph los detecta como HDD por el HBA)
## 8) Dashboard por **Ingress** (opcional)
```bash
# Desde el toolbox
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc '
for id in $(ceph osd ls); do ceph osd crush rm-device-class osd.$id || true; done
for id in $(ceph osd ls); do ceph osd crush set-device-class ssd osd.$id; done
ceph osd tree | egrep "zone|host|osd."
'
```
> Si más adelante creas un pool **solo‑SSD**, añade `spec.deviceClass: ssd` al `CephBlockPool`.
---
## 8) Dashboard por **Ingress** (NGINX) en `ceph.c2et.net`
> El dashboard del MGR escucha por defecto en **HTTP 7000**. Hacemos **TLS en el Ingress** (cert‑manager) y **HTTP** hacia el backend.
`ingress/dashboard.yaml`:
`ingress/dashboard.yaml` (backend HTTP:7000):
```yaml
apiVersion: networking.k8s.io/v1
@@ -275,15 +301,11 @@ metadata:
name: ceph-dashboard
namespace: rook-ceph
annotations:
cert-manager.io/cluster-issuer: letsencrypt-prod
nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
spec:
ingressClassName: nginx
tls:
- hosts: ["ceph.c2et.net"]
secretName: ceph-dashboard-tls
rules:
- host: ceph.c2et.net
- host: ceph.example.local
http:
paths:
- path: /
@@ -295,27 +317,24 @@ spec:
number: 7000
```
Credenciales:
Contraseña admin:
```bash
# Usuario por defecto
admin
# Contraseña generada
kubectl -n rook-ceph get secret rook-ceph-dashboard-password -o jsonpath="{.data.password}" | base64 -d; echo
# Cambiar contraseña (ejemplo)
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc \
'echo -n "MiNuevaPass" | ceph dashboard ac-user-set-password admin -i -'
kubectl -n rook-ceph get secret rook-ceph-dashboard-password -o jsonpath='{.data.password}' | base64 -d; echo
```
> Si prefieres **HTTPS 8443** también hacia el backend, habilita TLS en el dashboard de Ceph y cambia el Ingress a `backend-protocol: "HTTPS"` y puerto `8443` (y opcionalmente `proxy-ssl-verify: "off"`).
Crear usuario admin.c3s (el otro suele resetear la pass):
```bash
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc \
'echo -n "Pozuelo12345" | ceph dashboard ac-user-create admin.c3s administrator -i - && ceph dashboard ac-user-list'
```
---
## 9) Prueba rápida de PVC
## 9) Prueba de StorageClass (PVC + Pod)
`tests/pvc-test.yaml`:
`tests/pvc.yaml`:
```yaml
apiVersion: v1
@@ -330,7 +349,7 @@ spec:
storageClassName: ceph-rbd
```
`tests/pod-test.yaml`:
`tests/pod.yaml`:
```yaml
apiVersion: v1
@@ -351,97 +370,42 @@ spec:
claimName: test-rbd
```
Aplicar y verificar:
```bash
kubectl apply -f tests/pvc-test.yaml
kubectl apply -f tests/pod-test.yaml
kubectl apply -f tests/pvc.yaml
kubectl apply -f tests/pod.yaml
kubectl exec -it rbd-tester -- sh -c 'df -h /data && dd if=/dev/zero of=/data/test.bin bs=1M count=100 && ls -lh /data'
```
---
## 10) **Ampliación futura**: modo **Stretch** con **árbitro** (2 sites + arbiter)
Objetivo: supervivencia a la caída completa de un site y distribución **2+2** de réplicas entre `site-a` y `site-b`.
1. **Añade el nodo árbitro** y etiqueta:
## 10) Guardar manifiestos exactos desde el clúster
```bash
kubectl label node <NODO_ARBITRO> topology.kubernetes.io/zone=arbiter --overwrite
```
# CephCluster “limpio” sin campos efímeros
kubectl -n rook-ceph get cephcluster rook-ceph -o yaml --show-managed-fields=false \
| yq 'del(.metadata.creationTimestamp,.metadata.generation,.metadata.resourceVersion,.metadata.uid,.status)' \
> ceph-cluster-export.yaml
2. **Actualiza el CephCluster** a stretch (5 MON):
```yaml
# parche del CephCluster (fragmento spec)
mon:
count: 5
allowMultiplePerNode: false
stretchCluster:
failureDomainLabel: topology.kubernetes.io/zone
subFailureDomain: host
zones:
- name: arbiter
arbiter: true
- name: site-a
- name: site-b
```
> Mantén `placement.osd` restringido a `site-a`/`site-b` para no crear OSDs en el árbitro.
3. **(Opcional recomendado)** Cambia el `CephBlockPool` para que el *failure domain* vuelva a **`zone`** con `size: 4` (2 por zona). Si prefieres asegurar la regla, crea una CRUSH rule específica y asígnala al pool.
```bash
# Ejemplo: regla por zona
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc '
set -e
# Crea regla "rbd-4x-zone" (elige leaves de tipo zone)
ceph osd crush rule create-replicated rbd-4x-zone default zone || true
# Asigna la regla al pool y ajusta size
ceph osd pool set rbd-2x2-sites crush_rule rbd-4x-zone
ceph osd pool set rbd-2x2-sites size 4
ceph osd pool get rbd-2x2-sites crush_rule
'
```
> Tras el cambio a `zone`, Ceph reubica PGs para cumplir **2+2** entre `site-a` y `site-b`. Hazlo en ventana si ya hay mucho dato.
---
## 11) Troubleshooting rápido
* **PGs `active+undersized` con pool size=4**: ocurre si la regla CRUSH elige `zone` y solo hay 2 zonas (sin stretch). Solución: usa `failureDomain: host` o asigna una regla a `host` (sección 6) hasta activar stretch.
* **Ingress 503** al abrir el dashboard: el Service `rook-ceph-mgr-dashboard` usa **puerto 7000** (HTTP). Ajusta Ingress a `backend-protocol: "HTTP"` y puerto `7000`.
* **Cert TLS no emite**: revisa ClusterIssuer, DNS público hacia el Ingress y que el solver HTTP‑01 use `class: nginx`. Evita redirecciones que interfieran `/.well-known/acme-challenge/`.
---
## 12) Apéndice – Comandos útiles
Estado general:
```bash
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph -s
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph osd tree
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph df
```
Ver pools y reglas:
```bash
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph osd pool ls detail
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph osd pool get rbd-2x2-sites crush_rule
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- ceph osd crush rule dump rbd-4x-host
```
Dashboard:
```bash
kubectl -n rook-ceph get secret rook-ceph-dashboard-password -o jsonpath="{.data.password}" | base64 -d; echo
kubectl -n rook-ceph exec -it deploy/rook-ceph-tools -- bash -lc 'echo -n "NuevaPass" | ceph dashboard ac-user-set-password admin -i -'
# Pool y StorageClass
kubectl -n rook-ceph get cephblockpool rbd-2x2-sites -o yaml > ceph-blockpool-export.yaml
kubectl get sc ceph-rbd -o yaml > storageclass-rbd-export.yaml
```
---
> **Resumen**: despliegas Rook‑Ceph con red de almacenamiento dedicada, discos por **by‑id**, pool RBD **size 4** sobre **host** para evitar PGs undersized sin árbitro, dashboard por **Ingress** (TLS en NGINX, backend HTTP:7000) y, cuando añadas el **árbitro**, pasas el clúster a **stretch** y el pool a **`failureDomain: zone`** con **2+2** por site.
## 11) Troubleshooting breve
* **MON no se reprograma** tras borrar uno: el operador necesita que el **quórum** quede seguro. Revisa `rook-ceph-mon-endpoints`, `deployment/rook-ceph-mon-*` y `op-mon` en logs del operador.
* **OSDs detectados como HDD** vía HBA: puedes forzar `deviceClass: ssd` por disco (como en el `CephCluster`) o, ya desplegado, ajustar con `ceph osd crush set-device-class ssd osd.N`.
* **Dashboard “Orchestrator is not available”**:
```bash
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph orch set backend rook
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- ceph orch status
```
---
### Fin
Con esto dispones de un despliegue Rook‑Ceph alineado con la realidad actual: 2 zonas de datos + árbitro, 3 MON (uno por zona), 2 MGR (A/B), OSDs solo en A/B, y un pool RBD con réplicas **2+2** por zona. ¡Listo para producción y ampliaciones futuras!