如何从kubernetes获取部署日志 [英] how to get logs of deployment from kubernetes
问题描述
我正在kubernetes集群(v1.15.2)中创建一个influxdb部署，这是我的yaml文件:
apiVersion:extensions/v1beta1种类:部署元数据:名称:Monitoring-influxdb命名空间:kube-system规格:复制品:1模板:元数据:标签:任务:监控k8s-app:influxdb规格:容器:-名称:influxdb图片:registry.cn-hangzhou.aliyuncs.com/google_containers/heapster-influxdb-amd64:v1.5.2volumeMounts:-mountPath:/数据名称:influxdb-storage数量:-名称:influxdb-storageemptyDir:{}---apiVersion:v1种类:服务元数据:标签:任务:监控#用作集群附件(https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)#如果不将其用作插件，则应注释掉此行.kubernetes.io/cluster-service:true"kubernetes.io/名称:monitoring-influxdb名称:Monitoring-influxdb命名空间:kube-system规格:端口:-端口:8086targetPort:8086选择器:k8s-app:influxdb 这是广告连播状态:
$ kubectl获取部署-n kube-system姓名可用年龄coredns 1/1 1 1 163dkubernetes-dashboard 1/1 1 1 164d监控格拉芬娜0/1 0 0 12mMonitoring-Influxdb 0/1 0 0 11m 现在我正在等待30分钟，仍然没有pod avaliabe，如何从命令行检查部署日志?我现在无法访问kubernetes仪表板.我仅搜索命令来获取pod日志，但是现在没有pod avaliabe.我已经尝试在node中添加标签:
kubectl标签节点azshara-k8s03 k8s-app = influxdb 这是我的部署描述内容:
$ kubectl描述部署监视-influxdb -n kube-system名称:monitoring-influxdb命名空间:kube-systemCreationTimestamp:星期三，2020年3月4日11:15:52 +0800标签:k8s-app = influxdb任务=监控注释:kubectl.kubernetes.io/last-applied-configuration:{"apiVersion":"extensions/v1beta1"，"kind":"Deployment"，"metadata":{"annotations":{}，"name":"monitoring-influxdb"，"namespace":"kube-system"...选择器:k8s-app = influxdb，任务=监控副本:1个所需|0更新|共0个|0可用|0不可用策略类型:RollingUpdateMinReadySeconds:0RollingUpdateStrategy:1个最大不可用，1个最大喘振Pod模板:标签:k8s-app = influxdb任务=监控容器:influxdb:图片:registry.cn-hangzhou.aliyuncs.com/google_containers/heapster-influxdb-amd64:v1.5.2端口:< none>主机端口:< none>环境:< none>坐骑:/influxdb-storage(rw)中的数据卷数:influxdb存储:类型:EmptyDir(共享容器寿命的临时目录)中等的:SizeLimit:< unset>OldReplicaSets:< none>NewReplicaSet:< none>事件:< none> 这是获取日志的另一种方法:
$ kubectl -n kube系统日志-f部署/监视-influxdb错误:等待条件超时 此命令没有输出:
kubectl日志--selector k8s-app = influxdb 在kube-system命名空间中有我所有的pod:
〜/Library/Mobile Documents/com〜apple〜CloudDocs/Document/k8s/work/heapster/heapster-deployment⌚11:57:40$ kubectl get pods -n kube-system名称就绪状态重启年龄coredns-569fd64d84-5q5pj 1/1运行中0 46hkubernetes-dashboard-6466b68b-z6z78 1/1正在运行0 11htraefik-ingress-controller-hx4xd 1/1正在运行0 11h 您可以尝试 kubectl describe deploy monitoring-influxdb 以获得部署的一些高级视图，也许这里有一些信息./p>
有关更详细的日志，请先获取吊舱: kubectl获取po 然后，请求Pod日志: kubectl日志< pod-name>
I am create a influxdb deployment in kubernetes cluster(v1.15.2),this is my yaml file:
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: monitoring-influxdb
namespace: kube-system
spec:
replicas: 1
template:
metadata:
labels:
task: monitoring
k8s-app: influxdb
spec:
containers:
- name: influxdb
image: registry.cn-hangzhou.aliyuncs.com/google_containers/heapster-influxdb-amd64:v1.5.2
volumeMounts:
- mountPath: /data
name: influxdb-storage
volumes:
- name: influxdb-storage
emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
labels:
task: monitoring
# For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
# If you are NOT using this as an addon, you should comment out this line.
kubernetes.io/cluster-service: 'true'
kubernetes.io/name: monitoring-influxdb
name: monitoring-influxdb
namespace: kube-system
spec:
ports:
- port: 8086
targetPort: 8086
selector:
k8s-app: influxdb
and this is the pod status:
$ kubectl get deployment -n kube-system
NAME READY UP-TO-DATE AVAILABLE AGE
coredns 1/1 1 1 163d
kubernetes-dashboard 1/1 1 1 164d
monitoring-grafana 0/1 0 0 12m
monitoring-influxdb 0/1 0 0 11m
now I am waiting 30minites there is still no pod avaliabe,how to check the deployment log from command line? I could not access the kubernetes dashboard now.I am searching only command to get pod log,but now there is no pod avaliabe.I already tried to add label in node:
kubectl label nodes azshara-k8s03 k8s-app=influxdb
This is my deployment describe content:
$ kubectl describe deployments monitoring-influxdb -n kube-system
Name: monitoring-influxdb
Namespace: kube-system
CreationTimestamp: Wed, 04 Mar 2020 11:15:52 +0800
Labels: k8s-app=influxdb
task=monitoring
Annotations: kubectl.kubernetes.io/last-applied-configuration:
{"apiVersion":"extensions/v1beta1","kind":"Deployment","metadata":{"annotations":{},"name":"monitoring-influxdb","namespace":"kube-system"...
Selector: k8s-app=influxdb,task=monitoring
Replicas: 1 desired | 0 updated | 0 total | 0 available | 0 unavailable
StrategyType: RollingUpdate
MinReadySeconds: 0
RollingUpdateStrategy: 1 max unavailable, 1 max surge
Pod Template:
Labels: k8s-app=influxdb
task=monitoring
Containers:
influxdb:
Image: registry.cn-hangzhou.aliyuncs.com/google_containers/heapster-influxdb-amd64:v1.5.2
Port: <none>
Host Port: <none>
Environment: <none>
Mounts:
/data from influxdb-storage (rw)
Volumes:
influxdb-storage:
Type: EmptyDir (a temporary directory that shares a pod's lifetime)
Medium:
SizeLimit: <unset>
OldReplicaSets: <none>
NewReplicaSet: <none>
Events: <none>
this is another way to get logs:
$ kubectl -n kube-system logs -f deployment/monitoring-influxdb
error: timed out waiting for the condition
there is no output for this command:
kubectl logs --selector k8s-app=influxdb
there is all my pod in kube-system namespace:
~/Library/Mobile Documents/com~apple~CloudDocs/Document/k8s/work/heapster/heapster-deployment ⌚ 11:57:40
$ kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-569fd64d84-5q5pj 1/1 Running 0 46h
kubernetes-dashboard-6466b68b-z6z78 1/1 Running 0 11h
traefik-ingress-controller-hx4xd 1/1 Running 0 11h
You can try kubectl describe deploy monitoring-influxdb to get some high-level view of the deployment, maybe some information here.
For more detailed logs, first get the pods: kubectl get po
Then, request the pod logs: kubectl logs <pod-name>
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