在K8s集群中部署Prometheus

一、版本要求结合上图选择release-0.9版本。二、下载资源2.1下载安装包github网站地址：https://github.com/prometheus-operator/kube-prometheus下载安装包：wget https://github.com/prometheus-operator/kube-prometheus/archive/refs/tags/v0.9.0.zip解

zhangfei_bk

2379人浏览 · 2021-11-26 15:32:48

zhangfei_bk · 2021-11-26 15:32:48 发布

一、版本要求

在这里插入图片描述
结合上图选择release-0.9版本。

二、下载资源

2.1下载安装包

github网站地址：https://github.com/prometheus-operator/kube-prometheus
下载安装包：

wget https://github.com/prometheus-operator/kube-prometheus/archive/refs/tags/v0.9.0.zip

解压：

unzip v0.9.0.zip

进入解压目录：

cd kube-prometheus-0.9.0

查看需要的镜像：

find ./manifests/ -type f |xargs grep 'image: '|sort|uniq|awk '{print $3}'|grep ^[a-zA-Z]|grep -Evw 'error|kubeRbacProxy'|sort -rn|uniq

[root@node2 kube-prometheus-0.9.0]# find ./manifests/ -type f |xargs grep 'image: '|sort|uniq|awk '{print $3}'|grep ^[a-zA-Z]|grep -Evw 'error|kubeRbacProxy'|sort -rn|uniq
quay.io/prometheus/prometheus:v2.29.1
quay.io/prometheus-operator/prometheus-operator:v0.49.0
quay.io/prometheus/node-exporter:v1.2.2
quay.io/prometheus/blackbox-exporter:v0.19.0
quay.io/prometheus/alertmanager:v0.22.2
quay.io/brancz/kube-rbac-proxy:v0.11.0
k8s.gcr.io/prometheus-adapter/prometheus-adapter:v0.9.0
k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.1.1
jimmidyson/configmap-reload:v0.5.0
grafana/grafana:8.1.1
[root@node2 kube-prometheus-0.9.0]#

2.2准备镜像（每个节点都操作一遍）

由于k8s.gcr.io下的国外镜像是无法直接下载的，所以需要提前准备一下。我把这两个镜像上传到了docker hub上面。
拉取这两个镜像：

docker pull zfhub/prometheus-adapter:v0.9.0
docker pull zfhub/kube-state-metrics:v2.1.1

给镜像打tag：

docker tag zfhub/prometheus-adapter:v0.9.0 k8s.gcr.io/prometheus-adapter/prometheus-adapter:v0.9.0
docker tag zfhub/kube-state-metrics:v2.1.1 k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.1.1

操作流程：

[root@node2 kube-prometheus-0.9.0]# docker pull zfhub/prometheus-adapter:v0.9.0
v0.9.0: Pulling from zfhub/prometheus-adapter
0d7d70899875: Pull complete
9101555ad5ba: Pull complete
Digest: sha256:2ffef2ecfa11f052de52a214ff17dc8209d168a9aeb9f3ab74c238308524caf4
Status: Downloaded newer image for zfhub/prometheus-adapter:v0.9.0
docker.io/zfhub/prometheus-adapter:v0.9.0
[root@node2 kube-prometheus-0.9.0]# docker pull zfhub/kube-state-metrics:v2.1.1
v2.1.1: Pulling from zfhub/kube-state-metrics
0d7d70899875: Already exists
782dbf431fc7: Pulling fs layer
v2.1.1: Pulling from zfhub/kube-state-metrics
0d7d70899875: Already exists
782dbf431fc7: Pull complete
Digest: sha256:102c4adb2e8935e8e9d09419fc06e6eedcb5c4a8529c9557ce40e0a4a437287e
Status: Downloaded newer image for zfhub/kube-state-metrics:v2.1.1
docker.io/zfhub/kube-state-metrics:v2.1.1
[root@node2 kube-prometheus-0.9.0]# docker tag zfhub/prometheus-adapter:v0.9.0 k8s.gcr.io/prometheus-adapter/prometheus-adapter:v0.9.0
[root@node2 kube-prometheus-0.9.0]# docker tag zfhub/kube-state-metrics:v2.1.1 k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.1.1
[root@node2 kube-prometheus-0.9.0]#

下载其它镜像：

docker pull quay.io/prometheus/prometheus:v2.29.1
docker pull quay.io/prometheus-operator/prometheus-operator:v0.49.0
docker pull quay.io/prometheus/node-exporter:v1.2.2
docker pull quay.io/prometheus/blackbox-exporter:v0.19.0
docker pull quay.io/prometheus/alertmanager:v0.22.2
docker pull quay.io/brancz/kube-rbac-proxy:v0.11.0
docker pull jimmidyson/configmap-reload:v0.5.0
docker pull grafana/grafana:8.1.1

三、创建所有服务

创建：

kubectl create -f manifests/setup
kubectl create -f manifests/

查看：

kubectl -n monitoring get all

[root@node2 kube-prometheus-0.9.0]# kubectl -n monitoring get all
NAME                                       READY   STATUS    RESTARTS   AGE
pod/alertmanager-main-0                    1/2     Running   0          51s
pod/alertmanager-main-1                    1/2     Running   0          50s
pod/alertmanager-main-2                    1/2     Running   0          49s
pod/blackbox-exporter-6798fb5bb4-62ng4     3/3     Running   0          51s
pod/grafana-7476b4c65b-9sf6g               1/1     Running   0          48s
pod/kube-state-metrics-74964b6cd4-j277l    3/3     Running   0          48s
pod/node-exporter-fg5g5                    2/2     Running   0          48s
pod/node-exporter-ft8w7                    2/2     Running   0          48s
pod/node-exporter-h66h5                    2/2     Running   0          48s
pod/prometheus-adapter-5b8db7955f-6wn2z    1/1     Running   0          47s
pod/prometheus-adapter-5b8db7955f-7nklc    1/1     Running   0          47s
pod/prometheus-k8s-0                       2/2     Running   0          44s
pod/prometheus-k8s-1                       2/2     Running   0          44s
pod/prometheus-operator-75d9b475d9-4n2cs   2/2     Running   0          65s

NAME                            TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                      AGE
service/alertmanager-main       ClusterIP   10.1.122.158   <none>        9093/TCP                     52s
service/alertmanager-operated   ClusterIP   None           <none>        9093/TCP,9094/TCP,9094/UDP   52s
service/blackbox-exporter       ClusterIP   10.1.228.67    <none>        9115/TCP,19115/TCP           52s
service/grafana                 ClusterIP   10.1.164.198   <none>        3000/TCP                     49s
service/kube-state-metrics      ClusterIP   None           <none>        8443/TCP,9443/TCP            48s
service/node-exporter           ClusterIP   None           <none>        9100/TCP                     48s
service/prometheus-adapter      ClusterIP   10.1.152.248   <none>        443/TCP                      47s
service/prometheus-k8s          ClusterIP   10.1.61.120    <none>        9090/TCP                     46s
service/prometheus-operated     ClusterIP   None           <none>        9090/TCP                     45s
service/prometheus-operator     ClusterIP   None           <none>        8443/TCP                     65s

NAME                           DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR            AGE
daemonset.apps/node-exporter   3         3         3       3            3           kubernetes.io/os=linux   48s

NAME                                  READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/blackbox-exporter     1/1     1            1           52s
deployment.apps/grafana               1/1     1            1           49s
deployment.apps/kube-state-metrics    1/1     1            1           48s
deployment.apps/prometheus-adapter    2/2     2            2           47s
deployment.apps/prometheus-operator   1/1     1            1           65s

NAME                                             DESIRED   CURRENT   READY   AGE
replicaset.apps/blackbox-exporter-6798fb5bb4     1         1         1       52s
replicaset.apps/grafana-7476b4c65b               1         1         1       49s
replicaset.apps/kube-state-metrics-74964b6cd4    1         1         1       48s
replicaset.apps/prometheus-adapter-5b8db7955f    2         2         2       47s
replicaset.apps/prometheus-operator-75d9b475d9   1         1         1       65s

NAME                                 READY   AGE
statefulset.apps/alertmanager-main   0/3     52s
statefulset.apps/prometheus-k8s      2/2     45s
[root@node2 kube-prometheus-0.9.0]#

⚠️⚠️⚠️ 清空上面服务的命令：

kubectl delete -f manifests/
kubectl delete -f manifests/setup/

四、访问下prometheus的UI

修改下prometheus UI的service模式，便于我们访问

kubectl -n monitoring patch svc prometheus-k8s -p '{"spec":{"type":"NodePort"}}'

获取prometheus-k8s对应service的ip：

kubectl get svc prometheus-k8s -n monitoring

[root@node2 kube-prometheus-0.9.0]# kubectl get svc prometheus-k8s -n monitoring
NAME             TYPE       CLUSTER-IP    EXTERNAL-IP   PORT(S)          AGE
prometheus-k8s   NodePort   10.1.61.120   <none>        9090:32217/TCP   28m
[root@node2 kube-prometheus-0.9.0]#

访问http://node2(ip):32217(端口改成自己service对应的端口)：
在这里插入图片描述
点击Status下的Targets可以看到全部资源都处于UP状态，说明成功监控到了：

修改grafana服务的类型为nodeport用于前端访问：

kubectl -n monitoring patch svc grafana -p '{"spec":{"type":"NodePort"}}'

workflow@Slave2:/home/scidb/k8s_workplace/test/kube-prometheus-0.9.0$ kubectl -n monitoring patch svc grafana -p '{"spec":{"type":"NodePort"}}'
service/grafana patched
workflow@Slave2:/home/scidb/k8s_workplace/test/kube-prometheus-0.9.0$ kubectl get svc -n monitoring
NAME                    TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
alertmanager-main       ClusterIP   10.109.119.14    <none>        9093/TCP                     38m
alertmanager-operated   ClusterIP   None             <none>        9093/TCP,9094/TCP,9094/UDP   38m
blackbox-exporter       ClusterIP   10.96.210.40     <none>        9115/TCP,19115/TCP           38m
grafana                 NodePort    10.109.219.216   <none>        3000:31509/TCP               38m
kube-state-metrics      ClusterIP   None             <none>        8443/TCP,9443/TCP            38m
node-exporter           ClusterIP   None             <none>        9100/TCP                     38m
prometheus-adapter      ClusterIP   10.103.145.156   <none>        443/TCP                      38m
prometheus-k8s          NodePort    10.105.178.138   <none>        9090:31326/TCP               38m
prometheus-operated     ClusterIP   None             <none>        9090/TCP                     37m
prometheus-operator     ClusterIP   None             <none>        8443/TCP                     38m
workflow@Slave2:/home/scidb/k8s_workplace/test/kube-prometheus-0.9.0$

访问http://node2(ip):31509(端口改成自己service对应的端口)，账号名和密码都是admin：
在这里插入图片描述

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