mountpath:/logs
volumes:
-name:app-logs Emptudir
: {}
View Log kubectl logs 5. Configuration management of Pod
The Kubernetes v1.2 version provides a unified cluster configuration management solution –configmap. 5.1. Configmap: Configuration management for container applications
Usage Scenario: Live as an environment variable within a container. Set startup parameters for the container start
host) must be assigned.
Storage can specify multiple shared volume for pod. All containers in the pod have access to the shared volume. Volume can also be used to persist storage resources in the pod to prevent file loss after a container restart.
Using PodsI usually divide the
ResourcesTwo kinds of resources can be shared in pods: network and storage.(1) NetworkEach pod will be assigned a unique IP address. All containers in the pod share network space, including IP addresses and ports. Containers inside the pod can communicate with each other using localhost. When a container in the pod co
, where 6.109 is a private library#KUBELET_POD_INFRA_CONTAINER = "--pod-infra-container-image=registry.access.redhat.com/rhel7/pod-infrastructure: Latest "kubelet_pod_infra_container="--pod-infra-container-image=192.168.6.109:5000/pod-infrastructure:latest "3. Start related servicessystemctl Start kube-apiserver kube-c
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Article, where the information may have evolved or changed.
All the places involved in storage are very prone to "pits", Kubernetes is no exception.
First, the cause of the problem
The problem began yesterday by upgrading the operation of a stateful service. The pod under the service is mounted with a persistent Volume provided with Ceph RBD. The p
This is a creation in
Article, where the information may have evolved or changed.
Kubernetes cluster has been set up, has been running very stable. Previous concerns have focused more on installation, configuration, and component debugging, and some of the minutiae has been overlooked. The settings for the time zone in the pod are one of them. I'm going to try to solve this problem today.
First, the problem
"Editor's words" The Kubernetes Scheduler dispatches the pod to the work node according to a specific algorithm and strategy. By default, the Kubernetes scheduler can meet most of the requirements, such as scheduling pods to run on resource-rich nodes, or scheduling pod dispersal to different nodes to make cluster node
Pod is the most basic deployment dispatch unit in Kubernetes, and it can contain container, which logically represents an instance of a certain application. For example, a Web site application is built from the front end, back end, and database, and these three components will run in their respective containers, so we can create a pod containing three container.
Kubernetes How to manage pods using Replicationcontroller, Replica Set, deployment53746273The pod is literally a pod, and we can think of the container as a bean in a pod, and one or more closely related beans wrapped together as pods (a pod). In the k8s we do not directly m
Recently started to study kubernetes, the operation of the container, the discovery has been in the containercreating state, sad a reminder, just started to encounter a bit of trouble, the following talk about how to find the problem and solve theTo run the container command:KUBECTL-F Create Redis.yamlKubectl Get pod RedisNAME Ready STATUS RestartsREDIS-MASTER-6JGSL 0/1 containercreating 0 12sAlways in cont
You need to remove the following pod, but you cannot delete it using the following command: KUBECTL delete pod kong-rc-2364486572-3hgpk
Looking at this instance's information, we found that the container was running on kubernetes node, but now that node is down.
So now that node is down, it's time to just remove node.
After node deletion, the
The pod is a container group, so let's create a pod now, just like Dockerfile.VI Nginx-pod.yaml (to pay great attention to the space, usually two spaces)Add to:Apiversion:v1Kind:podMetadataName:nginx1SpecContainers-NAME:NGINX1Image:docker.io/nginxPorts-containerport:9001Start podKubectl create-f Nginx-pod.yamlUse get Pods to view650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/88/89/wKioL1f7Tn_RJA
label $ kubectl label pod JDK-94bcfc779-fs2cl app=dev# Modifying Labels--overwrite$ kubectl label pod JDK-94bcfc779-fs2cl app=test--overwriteTag Selector
Equivalent relationship Tag Selector: =, = =,! = (Kubectl get pods-l App=test,app=dev)
Collection Relationship Tag Selector: Key in (V1,V2,V3), key notin (V1,V2,V3)! KEY (Kubectl get Pods-l "app in (Test,dev)")
Many resources support inl
Reference: http://kubernetes.kansea.com/docs/hellonode/Now you should be able to access this via this address service : Http://EXTERNAL_IP: 8080 or runcurl http://EXTERNAL_IP:8080If you are accessing a new Web service through a browser or CURL, you should see some running logs:kubectl logs One of the great features of Kubernetes is that he can easily expand your application. Suppose you suddenly need to add your app; you just need to tell deployment
[TOC]1. Exception information: Failed to pull image "spark:0.1": rpc Error:code = Unknown desc = Repository Docker.io/spark not found:does not E Xist or no pull access2. Exception information: Error from Server (badrequest): Container ' Xej ' in pod ' XEJ-545694F448-JTMBF ' is waiting to start:trying and Faili Ng to pull image3. Exception information: Starting container process caused \ "process_linux.go:286:decoding sync type from init pipe caused \
Log restrictions can be done through Docker option, but first change the log-driver to Json-file mode# cat/etc/sysconfig/docker OPTIONS='--log-opt max-size=50m--log-opt max-file=5' Empty log through# cat/dev/null >/var/lib/docker/containers/container_id/container_id-/dev/null > $ (Docker inspect--format='{. LogPath}}' container_id)The default log is stored under/var/lib/docker/containers/Kubernetes pod lo
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