本文主要是介绍在 k8s（kubernetes）中使用 Loki 进行日志监控，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
安装helm环境
[root@hello ~/yaml]#
[root@hello ~/yaml]# curl https://baltocdn.com/helm/signing.asc | sudo apt-key add -
[root@hello ~/yaml]# sudo apt-get install apt-transport-https --yes
[root@hello ~/yaml]# echo "deb https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
deb https://baltocdn.com/helm/stable/debian/ all main
[root@hello ~/yaml]# sudo apt-get update
[root@hello ~/yaml]# sudo apt-get install helm
[root@hello ~/yaml]#添加安装下载源
[root@hello ~/yaml]# helm repo add loki https://grafana.github.io/loki/charts && helm repo update
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
"loki" has been added to your repositories
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "loki" chart repository
Update Complete. ⎈Happy Helming!⎈
[root@hello ~/yaml]#
[root@hello ~/yaml]#[root@hello ~/yaml]# helm pull loki/loki-stack
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
[root@hello ~/yaml]# ls
loki-stack-2.1.2.tgz nfs-storage.yaml nginx-ingress.yaml
[root@hello ~/yaml]# tar xf loki-stack-2.1.2.tgz
[root@hello ~/yaml]# ls
loki-stack loki-stack-2.1.2.tgz nfs-storage.yaml nginx-ingress.yaml安装loki日志系统
[root@hello ~/yaml]# helm install loki loki-stack/
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
WARNING: This chart is deprecated
W1203 07:31:04.751065 212245 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
W1203 07:31:04.754254 212245 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
W1203 07:31:04.833003 212245 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
W1203 07:31:04.833003 212245 warnings.go:70] policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+, unavailable in v1.25+
NAME: loki
LAST DEPLOYED: Fri Dec 3 07:31:04 2021
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
The Loki stack has been deployed to your cluster. Loki can now be added as a datasource in Grafana.See http://docs.grafana.org/features/datasources/loki/ for more detail.
[root@hello ~/yaml]#查看安装后是否完成
[root@hello ~/yaml]# helm list -A
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
loki default 1 2021-12-03 07:31:04.3324429 +0000 UTC deployed loki-stack-2.1.2 v2.0.0
[root@hello ~/yaml]#[root@hello ~/yaml]# kubectl get pod
NAME READY STATUS RESTARTS AGE
loki-0 0/1 Running 0 68s
loki-promtail-79tn8 1/1 Running 0 68s
loki-promtail-qzjjs 1/1 Running 0 68s
loki-promtail-zlt7p 1/1 Running 0 68s
nfs-client-provisioner-dc5789f74-jsrh7 1/1 Running 0 44m
[root@hello ~/yaml]#查看svc并修改类型
[root@hello ~/yaml]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.68.0.1 <none> 443/TCP 4h44m
loki ClusterIP 10.68.140.107 <none> 3100/TCP 2m58s
loki-headless ClusterIP None <none> 3100/TCP 2m58s
[root@hello ~/yaml]#将svc设置为 type: NodePort
[root@hello ~/yaml]# kubectl edit svc loki
service/loki edited
[root@hello ~/yaml]#
[root@hello ~/yaml]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.68.0.1 <none> 443/TCP 4h46m
loki NodePort 10.68.140.107 <none> 3100:31089/TCP 4m34s
loki-headless ClusterIP None <none> 3100/TCP 4m34s
[root@hello ~/yaml]#添加nginx应用
[root@hello ~/yaml]# vim nginx-app.yaml
[root@hello ~/yaml]# cat nginx-app.yaml
apiVersion: apps/v1
kind: Deployment
metadata:name: nginx
spec:selector:matchLabels:app: nginxreplicas: 1 template:metadata:labels:app: nginxspec:containers:- name: nginximage: nginx:1.7.9ports:- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:name: nginxlabels:app: nginxjobLabel: nginx
spec:ports:- name: nginxport: 80protocol: TCPselector:app: nginxtype: NodePort
[root@hello ~/yaml]#查看nginx的pod
[root@hello ~/yaml]# kubectl apply -f nginx-app.yaml
deployment.apps/nginx created
service/nginx created[root@hello ~/yaml]# kubectl get pod | grep nginx
nginx-5d59d67564-7fj4b 1/1 Running 0 29s
[root@hello ~/yaml]#测试访问
[root@hello ~/yaml]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.68.0.1 <none> 443/TCP 4h57m
loki NodePort 10.68.140.107 <none> 3100:31089/TCP 15m
loki-headless ClusterIP None <none> 3100/TCP 15m
nginx NodePort 10.68.150.95 <none> 80:31317/TCP 105s
[root@hello ~/yaml]#
[root@hello ~/yaml]# while true; do curl --silent --output /dev/null --write-out '%{http_code}' http://192.168.1.12:31317; sleep 1; echo; done在grafana中添加源
查看日志
添加面板
https://blog.csdn.net/qq_33921750
https://my.oschina.net/u/3981543
https://www.zhihu.com/people/chen-bu-yun-2
https://segmentfault.com/u/hppyvyv6/articles
https://juejin.cn/user/3315782802482007
https://space.bilibili.com/352476552/article
https://cloud.tencent.com/developer/column/93230
知乎、CSDN、开源中国、思否、掘金、哔哩哔哩、腾讯云
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