在easzlab部署的k8s集群安装kube-prometheus+rook-ceph
2022/9/13 6:54:44
本文主要是介绍在easzlab部署的k8s集群安装kube-prometheus+rook-ceph，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
一、k8s集群环境搭建
请参考：https://www.cnblogs.com/cyh00001/p/16520847.html
二、部署rook-ceph集群
2.1、环境需求：
easzlab-k8s-ceph-01 172.16.88.163 4vcpu 8G 3*100G easzlab-k8s-ceph-02 172.16.88.164 4vcpu 8G 3*100G easzlab-k8s-ceph-03 172.16.88.165 4vcpu 8G 3*100G
2.2、安装部署
root@easzlab-deploy:~# wget https://github.com/rook/rook/archive/refs/tags/v1.9.8.tar.gz root@easzlab-deploy:~# tar -xf v1.9.8.tar.gz root@easzlab-deploy:~# cd rook-1.9.8/deploy/examples/ root@easzlab-deploy:~/rook-1.9.8/deploy/examples# kubectl create -f crds.yaml -f common.yaml -f operator.yaml root@easzlab-deploy:~/rook-1.9.8/deploy/examples# kubectl create -f cluster.yaml root@easzlab-deploy:~/rook-1.9.8/deploy/examples# kubectl apply -f toolbox.yaml #安装ceph管理端 root@easzlab-deploy:~/rook-1.9.8/deploy/examples# kubectl apply -f dashboard-external-https.yam #通过svc映射端口到本地
注意：cluster.yml下mgr count数要调成1，默认是2，如果设为2，在安装ceph dashboard后，访问ceph dashboard会出错
2.3、安装完成后效果
root@easzlab-deploy:~# kubectl get pod -n rook-ceph NAME READY STATUS RESTARTS AGE csi-cephfsplugin-d2vrl 3/3 Running 6 (25h ago) 25d csi-cephfsplugin-f5pww 3/3 Running 3 (24d ago) 25d csi-cephfsplugin-fnhzm 3/3 Running 6 (25h ago) 25d csi-cephfsplugin-h6hx5 3/3 Running 3 (24d ago) 25d csi-cephfsplugin-kps24 3/3 Running 3 (24d ago) 25d csi-cephfsplugin-lp27f 3/3 Running 6 (25h ago) 25d csi-cephfsplugin-lqnrd 3/3 Running 3 (24d ago) 25d csi-cephfsplugin-provisioner-7b867fbd5f-66zqc 6/6 Running 6 (24d ago) 25d csi-cephfsplugin-provisioner-7b867fbd5f-6qp92 6/6 Running 6 (24d ago) 25d csi-cephfsplugin-xvvsc 3/3 Running 3 (24d ago) 25d csi-cephfsplugin-zhlhv 3/3 Running 3 (24d ago) 25d csi-rbdplugin-2lfch 3/3 Running 3 (24d ago) 25d csi-rbdplugin-47264 3/3 Running 3 (24d ago) 25d csi-rbdplugin-5bxrl 3/3 Running 6 (25h ago) 25d csi-rbdplugin-h7vz9 3/3 Running 3 (24d ago) 25d csi-rbdplugin-pnpdr 3/3 Running 3 (24d ago) 25d csi-rbdplugin-provisioner-59fc59c8ff-b8knh 6/6 Running 12 (25h ago) 25d csi-rbdplugin-provisioner-59fc59c8ff-v8cb8 6/6 Running 6 (24d ago) 25d csi-rbdplugin-rcbmb 3/3 Running 6 (25h ago) 25d csi-rbdplugin-rntvf 3/3 Running 3 (24d ago) 25d csi-rbdplugin-vvbqz 3/3 Running 6 (25h ago) 25d csi-rbdplugin-z9vs2 3/3 Running 3 (24d ago) 25d rook-ceph-crashcollector-172.16.88.157-67d49d4c7f-t5xvh 1/1 Running 0 24d rook-ceph-crashcollector-172.16.88.163-6d5c77d66-fc6ln 1/1 Running 2 (25h ago) 25d rook-ceph-crashcollector-172.16.88.164-b5685db67-dk9rb 1/1 Running 2 (25h ago) 25d rook-ceph-crashcollector-172.16.88.165-64d758974d-9w4gj 1/1 Running 2 (25h ago) 25d rook-ceph-mgr-a-799d564c7f-pf87c 1/1 Running 0 24d rook-ceph-mon-a-79c9599bcd-27tz7 1/1 Running 2 (25h ago) 25d rook-ceph-mon-b-7448c6ff79-mhtq7 1/1 Running 3 (25h ago) 25d rook-ceph-mon-c-659cb46b87-z5k9h 1/1 Running 1 (24d ago) 25d rook-ceph-operator-7f4cc48c84-b68kn 1/1 Running 3 (25h ago) 25d rook-ceph-osd-0-8699855f87-g9cvb 1/1 Running 2 (25h ago) 25d rook-ceph-osd-1-7df7bdb9dc-cgkbs 1/1 Running 2 (25h ago) 25d rook-ceph-osd-2-56897b8df-6hnp7 1/1 Running 2 (25h ago) 25d rook-ceph-osd-3-85f7b4c965-wrf5b 1/1 Running 2 (25h ago) 25d rook-ceph-osd-4-66d6ff6bc8-2wsfs 1/1 Running 2 (25h ago) 25d rook-ceph-osd-5-684f4bdcbd-wd922 1/1 Running 2 (25h ago) 25d rook-ceph-osd-6-db4b5699-bnf68 1/1 Running 2 (25h ago) 25d rook-ceph-osd-7-d6ccbb9c4-lj7hd 1/1 Running 2 (25h ago) 25d rook-ceph-osd-8-5dddc545c6-hblb8 1/1 Running 2 (25h ago) 25d rook-ceph-osd-prepare-172.16.88.157-hvrv2 0/1 Completed 0 5h6m rook-ceph-osd-prepare-172.16.88.158-jm2vg 0/1 Completed 0 5h6m rook-ceph-osd-prepare-172.16.88.159-9cnlk 0/1 Completed 0 5h6m rook-ceph-osd-prepare-172.16.88.163-7mmpn 0/1 Completed 0 5h6m rook-ceph-osd-prepare-172.16.88.164-xxz85 0/1 Completed 0 5h6m rook-ceph-osd-prepare-172.16.88.165-6x2tl 0/1 Completed 0 5h6m rook-ceph-tools-74f48bf875-q95x2 1/1 Running 1 (24d ago) 25d root@easzlab-deploy:~#
三、创建ceph 存储类，为k8s集群提供动态存储
3.1、创建ceph存储类
vim hdd-sc.yaml
apiVersion: ceph.rook.io/v1
kind: CephBlockPool
metadata:
name: hdd-rook-ceph-block
namespace: rook-ceph
spec:
failureDomain: host
replicated:
size: 2
deviceClass: hdd
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: hdd-rook-ceph-block
provisioner: rook-ceph.rbd.csi.ceph.com
parameters:
clusterID: rook-ceph
pool: hdd-rook-ceph-block
imageFormat: "2"
imageFeatures: layering
csi.storage.k8s.io/provisioner-secret-name: rook-csi-rbd-provisioner
csi.storage.k8s.io/provisioner-secret-namespace: rook-ceph
csi.storage.k8s.io/node-stage-secret-name: rook-csi-rbd-node
csi.storage.k8s.io/node-stage-secret-namespace: rook-ceph
csi.storage.k8s.io/fstype: xfs
reclaimPolicy: Delete
kubectl apply -f hdd-sc.yaml
root@easzlab-deploy:~# kubectl get sc -A NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE hdd-rook-ceph-block rook-ceph.rbd.csi.ceph.com Delete Immediate false 20d root@easzlab-deploy:~#
3.2、访问ceph dashboard
3.3、admin账号密码获取
root@easzlab-deploy:~# kubectl -n rook-ceph get secret rook-ceph-dashboard-password -o jsonpath="{['data']['password']}" | base64 --decode && echo
`-E9G!a&s]#jsLK~7Ni_
root@easzlab-deploy:~#
四、安装kube-prometheus
4.1、下载项目包
注意版本要求
wget https://github.com/prometheus-operator/kube-prometheus/archive/refs/tags/v0.11.0.tar.gz root@easzlab-deploy:~# tar -xf v0.11.0.tar.gz root@easzlab-deploy:~# cd kube-prometheus-0.11.0/
4.2、对grafana、prometheus、altermanger做持久化存储
创建grafana存储pvc
cat grafana-storage-pvc.yaml
apiVersion: v1
kind: Namespace
metadata:
labels:
kubernetes.io/metadata.name: monitoring
name: monitoring
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: grafana-storage
namespace: monitoring
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 100Gi
storageClassName: hdd-rook-ceph-block
kubectl apply -f grafana-storage-pvc.yaml
4.3、在grafana-deployment.yaml增加存储类
vim manifests/grafana-deployment.yaml
。。。。。。。 149 serviceAccountName: grafana 150 volumes: 151 - name: grafana-storage 152 persistentVolumeClaim: 153 claimName: grafana-storage 154 - name: grafana-datasources 155 secret: 156 secretName: grafana-datasources 157 - configMap: 158 name: grafana-dashboards 159 name: grafana-dashboards 160 - emptyDir: 161 medium: Memory 。。。。。。。。
vim manifests/prometheus-prometheus.yaml
1 apiVersion: monitoring.coreos.com/v1
2 kind: Prometheus
3 metadata:
4 labels:
5 app.kubernetes.io/component: prometheus
6 app.kubernetes.io/instance: k8s
7 app.kubernetes.io/name: prometheus
8 app.kubernetes.io/part-of: kube-prometheus
9 app.kubernetes.io/version: 2.36.1
10 name: k8s
11 namespace: monitoring
12 spec:
13 alerting:
14 alertmanagers:
15 - apiVersion: v2
16 name: alertmanager-main
17 namespace: monitoring
18 port: web
19 enableFeatures: []
20 externalLabels: {}
21 image: quay.io/prometheus/prometheus:v2.36.1
22 nodeSelector:
23 kubernetes.io/os: linux
24 podMetadata:
25 labels:
26 app.kubernetes.io/component: prometheus
27 app.kubernetes.io/instance: k8s
28 app.kubernetes.io/name: prometheus
29 app.kubernetes.io/part-of: kube-prometheus
30 app.kubernetes.io/version: 2.36.1
31 podMonitorNamespaceSelector: {}
32 podMonitorSelector: {}
33 probeNamespaceSelector: {}
34 probeSelector: {}
35 replicas: 2
36 resources:
37 requests:
38 memory: 400Mi
39 ruleNamespaceSelector: {}
40 ruleSelector: {}
41 securityContext:
42 fsGroup: 2000
43 runAsNonRoot: true
44 runAsUser: 1000
45 serviceAccountName: prometheus-k8s
46 serviceMonitorNamespaceSelector: {}
47 serviceMonitorSelector: {}
48 version: 2.36.1
49 storage:
50 volumeClaimTemplate:
51 spec:
52 storageClassName: hdd-rook-ceph-block
53 accessModes: ["ReadWriteOnce"]
54 resources:
55 requests:
56 storage: 100Gi
57 # retention: 1y
vim manifests/alertmanager-alertmanager.yaml
1 apiVersion: monitoring.coreos.com/v1
2 kind: Alertmanager
3 metadata:
4 labels:
5 app.kubernetes.io/component: alert-router
6 app.kubernetes.io/instance: main
7 app.kubernetes.io/name: alertmanager
8 app.kubernetes.io/part-of: kube-prometheus
9 app.kubernetes.io/version: 0.24.0
10 name: main
11 namespace: monitoring
12 spec:
13 image: quay.io/prometheus/alertmanager:v0.24.0
14 nodeSelector:
15 kubernetes.io/os: linux
16 podMetadata:
17 labels:
18 app.kubernetes.io/component: alert-router
19 app.kubernetes.io/instance: main
20 app.kubernetes.io/name: alertmanager
21 app.kubernetes.io/part-of: kube-prometheus
22 app.kubernetes.io/version: 0.24.0
23 replicas: 3
24 resources:
25 limits:
26 cpu: 100m
27 memory: 100Mi
28 requests:
29 cpu: 4m
30 memory: 100Mi
31 securityContext:
32 fsGroup: 2000
33 runAsNonRoot: true
34 runAsUser: 1000
35 serviceAccountName: alertmanager-main
36 version: 0.24.0
37 storage:
38 volumeClaimTemplate:
39 spec:
40 storageClassName: hdd-rook-ceph-block
41 accessModes: ["ReadWriteOnce"]
42 resources:
43 requests:
44 storage: 100Gi
4.4、安装kube-prometheues
root@easzlab-deploy:~/kube-prometheus-0.11.0# kubectl create -f manifests/setup/
root@easzlab-deploy:~/kube-prometheus-0.11.0# kubectl create -f manifests/
4.5、取消grafana-networkPolicy限制，否则无法通过NodePort本地方访问grafana dashboard界面，有必要也可以取消prometheus、alertmanager
root@easzlab-deploy:~/kube-prometheus-0.11.0# kubectl delete -f manifests/grafana-networkPolicy.yaml
4.6、设置grafana svc NodePort
root@easzlab-deploy:~/kube-prometheus-0.11.0# kubectl edit svc -n monitoring grafana
# Please edit the object below. Lines beginning with a '#' will be ignored,
# and an empty file will abort the edit. If an error occurs while saving this file will be
# reopened with the relevant failures.
#
apiVersion: v1
kind: Service
metadata:
creationTimestamp: "2022-09-11T03:38:54Z"
labels:
app.kubernetes.io/component: grafana
app.kubernetes.io/name: grafana
app.kubernetes.io/part-of: kube-prometheus
app.kubernetes.io/version: 8.5.5
name: grafana
namespace: monitoring
resourceVersion: "9243318"
uid: 03d092f5-1714-421a-a179-130defc2c8d1
spec:
clusterIP: 10.100.119.155
clusterIPs:
- 10.100.119.155
externalTrafficPolicy: Cluster
internalTrafficPolicy: Cluster
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack
ports:
- name: http
port: 3000
protocol: TCP
targetPort: http
selector:
app.kubernetes.io/component: grafana
app.kubernetes.io/name: grafana
app.kubernetes.io/part-of: kube-prometheus
sessionAffinity: None
type: NodePort
status:
loadBalancer: {}
4.7、访问grafana dashboard页面
4.8、自定义或者导入监控模板
官方模板地址：https://grafana.com/grafana/dashboards/
找到合适的监控模板，复制模板id
在grafana界面导入该模板
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