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Fabric8's Kubernetes Client is using a generated model and DSL that has the exact same structure as as the JSON and YAML configuration. So in order to create a Service instance that looks like: { "kind": "Service", "apiVersion": "v1", "metadata": { "name": "myservice" }, "spec": { "ports":...	###Instruction: I am using fabric8.io to orchestrate application containers in Kubernetes. I am looking to create a Service that manages a pod with a certain label on a certain port. Is there a specific example of the API that does this. I couldnt find it in the examples https://github.com/fabric8io/kubernetes-client/...	I am using fabric8.io to orchestrate application containers in Kubernetes. I am looking to create a Service that manages a pod with a certain label on a certain port. Is there a specific example of the API that does this. I couldnt find it in the examples https://github.com/fabric8io/kubernetes-client/blob/master/kube...
In Kubernetes, each pod has an IP and within a pod there exists a so called infrastructure container, which is the first container that the Kubelet instantiates and it acquires the pod’s IP and sets up the network namespace. All the other containers in the pod then join the infra container’s network and IPC namespace. ...	###Instruction: I have known clearly about the usage of the docker option --net=container:NAME_or_ID, I also have read the source code of kubernetes about how to configure the container to use the network of InfraContainer, so I think the only work the process in container gcr.io/google_containers/pause:0.8.0 does is "...	I have known clearly about the usage of the docker option --net=container:NAME_or_ID, I also have read the source code of kubernetes about how to configure the container to use the network of InfraContainer, so I think the only work the process in container gcr.io/google_containers/pause:0.8.0 does is "pause", it will ...
ClusterIP can mean 2 things: a type of service which is only accessible within a Kubernetes cluster, or the internal ("virtual") IP of components within a Kubernetes cluster. Assuming you're asking about finding the internal IP of a cluster, it can be accessed in 3 ways (using the simple-nginx example): Via command li...	###Instruction: I have created a cluster of three nodes: one master, two minions. How to check the cluster IP in Kubernetes? Is it the IP of the master node? ### Response: ClusterIP can mean 2 things: a type of service which is only accessible within a Kubernetes cluster, or the internal ("virtual") IP of components ...	I have created a cluster of three nodes: one master, two minions. How to check the cluster IP in Kubernetes? Is it the IP of the master node?
Can you downgrade docker version to 1.7.2 first? I did the exact what you did above with docker 1.7.2, and everything works. $ curl 127.0.0.1:8080/ { "paths": [ "/api", "/api/v1", "/api/v1beta3", "/healthz", "/healthz/ping", "/logs/", "/metrics", "/resetMetrics", "/swagger-ui/", ...	###Instruction: I am following the Running Kubernetes locally via Docker guide and I am unable to get the master to start normally. Step One: Run etcd docker run --net=host -d gcr.io/google_containers/etcd:2.0.9 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data The etcd contai...	I am following the Running Kubernetes locally via Docker guide and I am unable to get the master to start normally. Step One: Run etcd docker run --net=host -d gcr.io/google_containers/etcd:2.0.9 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data The etcd container appears to s...
Where are you starting your cluster? I tried to reproduce this on GCE using both the 1.0.7 release and from HEAD and wasn't able to. Using the 1.0.7 release: $ kubectl get pods --namespace=kube-system NAME READY STATUS RESTARTS AGE elasticsearch-logging-v1-6x82b ...	###Instruction: I am trying to setup cluster logging following below link http://kubernetes.io/v1.0/docs/getting-started-guides/logging-elasticsearch.html my config-default.sh # Optional: Enable node logging. ENABLE_NODE_LOGGING=true LOGGING_DESTINATION=${LOGGING_DESTINATION:-elasticsearch} # Optional: When s...	I am trying to setup cluster logging following below link http://kubernetes.io/v1.0/docs/getting-started-guides/logging-elasticsearch.html my config-default.sh # Optional: Enable node logging. ENABLE_NODE_LOGGING=true LOGGING_DESTINATION=${LOGGING_DESTINATION:-elasticsearch} # Optional: When set to true, Elas...
As @tim-hockin says, we do plan to have a way to partition the network. But, IMO, for systems with more moving parts, (which is where Kubernetes should really shine), I think it will be better to focus on application security. Taking your three-layer example, the PHP pod should be authorized to talk to the database...	###Instruction: TL;DR Kubernetes allows all containers to access all other containers on the entire cluster, this seems to greatly increase the security risks. How to mitigate? Unlike Docker, where one would usually only allow network connection between containers that need to communicate (via --link), each Pod on Kube...	TL;DR Kubernetes allows all containers to access all other containers on the entire cluster, this seems to greatly increase the security risks. How to mitigate? Unlike Docker, where one would usually only allow network connection between containers that need to communicate (via --link), each Pod on Kubernetes can acces...
The default service account for each namespace is created by the service account controller, which is a loop that is part of the kube-controller-manager binary. So, verify that binary is running, and check its logs for anything that suggests it can't create a service account, make sure you set the "--service-account-p...	###Instruction: I'm trying to get Kubernetes running on some local machines running CoreOS. I'm loosely following this guide. Everything seems to be up and running, and I'm able to connect to the api via kubectl. However, when I try to create a pod, I get this error: Pod "redis-master" is forbidden: Missing service ac...	I'm trying to get Kubernetes running on some local machines running CoreOS. I'm loosely following this guide. Everything seems to be up and running, and I'm able to connect to the api via kubectl. However, when I try to create a pod, I get this error: Pod "redis-master" is forbidden: Missing service account default/de...
Can you plot memory/working_set_bytes_guage instead of memory/usage_bytes_guage? The kube UI might be using working set which correlates with free. memory/usage includes pages that the kernel can reclaim on demand.	###Instruction: Kubernetes UI dashboard shows (this matches the free -m on this minion) Memory: 7.29 GB / 7.84 GB This overall memory usage gradually increasing over time. I am trying to get a view into this memory growth using Kubernetes/Grafana default dashboard for this metric: memory/usage_bytes_gauge. However, I s...	Kubernetes UI dashboard shows (this matches the free -m on this minion) Memory: 7.29 GB / 7.84 GB This overall memory usage gradually increasing over time. I am trying to get a view into this memory growth using Kubernetes/Grafana default dashboard for this metric: memory/usage_bytes_gauge. However, I see the following...
Once you're certain your client properly handles disconnections, you can use the following kube-apiserver flag to control how long apiserver lets the watches stay open: https://github.com/kubernetes/kubernetes/blob/release-1.1/docs/admin/kube-apiserver.md --min-request-timeout=1800: An optional field indicating the min...	###Instruction: After 30-45 minutes, chunked HTTP connection to API server is dropped: Transmission Control Protocol, Src Port: http-alt (8080), Dst Port: 55782 (55782), Seq: 751, Ack: 88, Len: 0 .... 0000 0001 0001 = Flags: 0x011 (FIN, ACK) This happens regardless of the activity level, i.e. it happens for connection...	After 30-45 minutes, chunked HTTP connection to API server is dropped: Transmission Control Protocol, Src Port: http-alt (8080), Dst Port: 55782 (55782), Seq: 751, Ack: 88, Len: 0 .... 0000 0001 0001 = Flags: 0x011 (FIN, ACK) This happens regardless of the activity level, i.e. it happens for connections that were idle...
Part 1: What you said about using kubedns to find heapster and querying that REST API is fine. You could also write a client interface that abstracts the interface to heapster -- that would help with unit testing. Take a look at this metrics client: https://github.com/kubernetes/kubernetes/blob/master/pkg/controller/po...	###Instruction: I would like to expand/shrink the number of kubelets being used by kubernetes cluster based on resource usage. I have been looking at the code and have some idea of how to implement it at a high level. I am stuck on 2 things: What will be a good way for accessing the cluster metrics (via Heapster)? Sho...	I would like to expand/shrink the number of kubelets being used by kubernetes cluster based on resource usage. I have been looking at the code and have some idea of how to implement it at a high level. I am stuck on 2 things: What will be a good way for accessing the cluster metrics (via Heapster)? Should I try to use...
There is no command to do exactly what you asked. Here are some close matches. Be careful before running any of these commands. Make sure you are connected to the right cluster, if you use multiple clusters. Consider running. kubectl config view first. You can delete all the pods in a single namespace with this comma...	###Instruction: Upon looking at the docs, there is an API call to delete a single pod, but is there a way to delete all pods in all namespaces? ### Response: There is no command to do exactly what you asked. Here are some close matches. Be careful before running any of these commands. Make sure you are connected to t...	Upon looking at the docs, there is an API call to delete a single pod, but is there a way to delete all pods in all namespaces?
So it's the kubelet that actually creates the pods and talks to the docker daemon. If you do a docker ps -a on your nodes (as in not master) in your cluster, you'll see the containers in your pod running. So the workflow is run a kubectl command, that goes to the API server, which passes it to the controller, say tha...	###Instruction: I have a problem to understand the kubernetes workflow: So as I understand the flow: You have a master which contains etcd, api-server, controller manager and scheduler. You have nodes which contain pods (wich contain containers), kubelet and a proxy. The proxy is working as a basic proxy to make it pos...	I have a problem to understand the kubernetes workflow: So as I understand the flow: You have a master which contains etcd, api-server, controller manager and scheduler. You have nodes which contain pods (wich contain containers), kubelet and a proxy. The proxy is working as a basic proxy to make it possible for a serv...
I really don't understand your questions, but I can explain how flannel integrates with docker. Flannel is managing this file: # cat /usr/lib/systemd/system/docker.service.d/flannel.conf [Service] EnvironmentFile=-/run/flannel/docker Which is setting the docker service to use the values from /run/flannel/docker as env...	###Instruction: When Installing a Kubernetes Master Node via Docker, docker config bip and mtu for Run flannel. --bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU} What's are FLANNEL_SUBNET and FLANNEL_MTU variables? How to set ${FLANNEL_SUBNET} and ${FLANNEL_MTU}? ### Response: I really don't understand your questions, but ...	When Installing a Kubernetes Master Node via Docker, docker config bip and mtu for Run flannel. --bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU} What's are FLANNEL_SUBNET and FLANNEL_MTU variables? How to set ${FLANNEL_SUBNET} and ${FLANNEL_MTU}?
To have the master node access the cluster network, you can run flanneld and kube-proxy on the master node. This should give you the access you need. However, adding these components in the context of using the kube-up.sh method may be a little involved. Seems like you may have a few options while remaining mostly with...	###Instruction: I am trying to setup a small Kubernetes cluster using a VM (master) and 3 bare metal servers (all running Ubuntu 14.04). I am following the Kubernetes install tutorial for Ubuntu. Everything works fine if I use the 4 nodes (VM + servers) as minions. But when I try to use the VM as just a master, it cann...	I am trying to setup a small Kubernetes cluster using a VM (master) and 3 bare metal servers (all running Ubuntu 14.04). I am following the Kubernetes install tutorial for Ubuntu. Everything works fine if I use the 4 nodes (VM + servers) as minions. But when I try to use the VM as just a master, it cannot access the Fl...
In top command, your are looking at physical memory amount. in stats command, this also include the disk cached ram, so it's always bigger than the physical amount of ram. When you really need more RAM, the disk cached will be released for the application to use. In deed, the memmory usage is pulled via cgroup memory.u...	###Instruction: I'm running my rethinkdb container in Kubernetes cluster. Below is what I notice: Running top in the host which is CoreOS, rethinkdb process takes about 3Gb: $ top PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 981 root 20 0 53.9m 34.5m 20.9m S 15.6 0.4 115...	I'm running my rethinkdb container in Kubernetes cluster. Below is what I notice: Running top in the host which is CoreOS, rethinkdb process takes about 3Gb: $ top PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 981 root 20 0 53.9m 34.5m 20.9m S 15.6 0.4 1153:34 hyperkube 5...
It looks like your problem is with making sure the corresponding security group is open to ssh from whichever nodes you'd like to connect from. Make sure it's open to the public IP or the private IP, depending on which you're connecting from. For the right ssh key to use: it'll be whichever one you setup when spinning ...	###Instruction: The quickstart mentions a few times that, "You should be able to ssh into any node in your cluster ..." (e.g., http://kubernetes.io/v1.0/docs/user-guide/connecting-applications.html#environment-variables). I have tried as described below but I am getting timed out. I used export KUBERNETES_PROVIDER=aws...	The quickstart mentions a few times that, "You should be able to ssh into any node in your cluster ..." (e.g., http://kubernetes.io/v1.0/docs/user-guide/connecting-applications.html#environment-variables). I have tried as described below but I am getting timed out. I used export KUBERNETES_PROVIDER=aws; curl -sS https...
The problem was with the networking and kube2sky not accessing the API, so couldn't get the services. Changing the docker run for the master from, --config=/etc/kubernetes/manifests to --config=/etc/kubernetes/manifests-multi Then in the skydns-rc.yaml the for kube2sky as well as setting the domain, set the host IP a...	###Instruction: I am trying to prepare a dev environment for my team, so we can develop, stage and deploy with the same (or near same) environment. Getting a Kubernetes Cluster running locally via http://kubernetes.io/v1.0/docs/getting-started-guides/docker.html was nice and simple. I could then use kubectl to start th...	I am trying to prepare a dev environment for my team, so we can develop, stage and deploy with the same (or near same) environment. Getting a Kubernetes Cluster running locally via http://kubernetes.io/v1.0/docs/getting-started-guides/docker.html was nice and simple. I could then use kubectl to start the pods and servi...
That token has no explicit permissions. If you run with any authorization mode other than AllowAll, you will find that account cannot do anything with the API. If you want to stop injecting API tokens, you can remove the service account admission controller from the list (in apiserver options). If you want to stop ge...	###Instruction: Kubernetes automatically places a token and certificate in /var/run/secrets/kubernetes.io/serviceaccount of each running container in a pod. This token allows access to the the API Server from any container. Is it possible to either prevent this directory from being added to a container or specify a se...	Kubernetes automatically places a token and certificate in /var/run/secrets/kubernetes.io/serviceaccount of each running container in a pod. This token allows access to the the API Server from any container. Is it possible to either prevent this directory from being added to a container or specify a service account th...
Rolling update just scales down one replicationController and scales up another one. Therefore, it deletes the old pods and make new pods, at a controlled rate. So, if the new replication controller json file has different env vars and the same image, then the new pods will have that too. In fact, even if you don't...	###Instruction: Background: We're currently using a continuous delivery pipeline and at the end of the pipeline we deploy the generated Docker image to some server(s) together with the latest application configuration (set as environment variables when starting the Docker container). The continuous delivery build numbe...	Background: We're currently using a continuous delivery pipeline and at the end of the pipeline we deploy the generated Docker image to some server(s) together with the latest application configuration (set as environment variables when starting the Docker container). The continuous delivery build number is used as ver...
With @rwehner's help, I was finally able to figure it out. Checking the kubelet log revealed: Output: mount.nfs: rpc.statd is not running but is required for remote locking. As soon as I got rpcbind running, the mount worked.	###Instruction: I'm trying to mount an external nfs share in a Replication Controller. When I create the replication controller, the pod is pending. Getting the details on the pod, I get these events: Events: FirstSeen LastSeen Count From SubobjectPath Reason Message Thu, ...	I'm trying to mount an external nfs share in a Replication Controller. When I create the replication controller, the pod is pending. Getting the details on the pod, I get these events: Events: FirstSeen LastSeen Count From SubobjectPath Reason Message Thu, 05 Nov 2015 11:2...
Not out of the box (at the time of this writing), but the Kubernetes Ingress api is evolving to support internal loadbalancers. Note the following: Kubernetes Services are round robin loadbalanced by default. You can deploy something like the service loadbalancer [1] and access your services on the ClusterIP of the l...	###Instruction: Currently testing out Kubernetes 1.0.7 on AWS and it creates an external load balancer just fine but I want to know if its possible to create an internal load balancer that is only accessible within the internal subnet. ### Response: Not out of the box (at the time of this writing), but the Kubernete...	Currently testing out Kubernetes 1.0.7 on AWS and it creates an external load balancer just fine but I want to know if its possible to create an internal load balancer that is only accessible within the internal subnet.
The template in the ReplicationControllerSpec defines the template for a Pod that the ReplicationController will create, but since it's an abstract template, it doesn't make sense for it to have a creation time. Once the ReplicationController creates a pod, the CreationTimestamp will be set to the time the Pod was crea...	###Instruction: What does it mean when the creationTimestamp for the template is null? "template": { "metadata": { "creationTimestamp": null, "labels": { "name": "kube-template" } }, ### Response: The template in the ReplicationControllerSpec defin...	What does it mean when the creationTimestamp for the template is null? "template": { "metadata": { "creationTimestamp": null, "labels": { "name": "kube-template" } },
Passing the devices to the container is not currently supported in Kubernetes. This issue is tracked in https://github.com/kubernetes/kubernetes/issues/5607	###Instruction: Or to put it another way, what can I do in kubernetes so that the container is run with the equivalent of --device=/dev/tty10, as an example. Otherwise accessing a device like that gives an error. [root@87eb47e75ed4 /]# echo foo >> /dev/tty10 bash: /dev/tty10: Operation not permitted I haven't found a ...	Or to put it another way, what can I do in kubernetes so that the container is run with the equivalent of --device=/dev/tty10, as an example. Otherwise accessing a device like that gives an error. [root@87eb47e75ed4 /]# echo foo >> /dev/tty10 bash: /dev/tty10: Operation not permitted I haven't found a way currently to...
The DNS name for services is as follow: {service-name}.{namespace}.svc.cluster.local. Assuming you configured kubectl to work with your cluster you should be able to get your service and namespace details by the following the steps below. Get your namespace $ kubectl get namespaces NAME LABELS STATUS defaul...	###Instruction: From the kubernetes docs I see that there is a DNS based service discovery mechanism. Does Google Container Engine support this. If so, what's the format of DNS name to discover a service running inside Container Engine. I couldn't find the relevant information in the Container Engine docs. ### Respons...	From the kubernetes docs I see that there is a DNS based service discovery mechanism. Does Google Container Engine support this. If so, what's the format of DNS name to discover a service running inside Container Engine. I couldn't find the relevant information in the Container Engine docs.
From: https://github.com/kubernetes/kubernetes/pull/12717/files This function func ReadDockerConfigFile() (cfg DockerConfig, err error) is used to parse config which is stored in: GetPreferredDockercfgPath() + "/config.json" workingDirPath + "/config.json" $HOME/.docker/config.json /.docker/config.json GetPreferredDoc...	###Instruction: I am attempting to pull private docker images from Docker Hub. Error: image orgname/imagename:latest not found The info I am seeing on the internet... http://kubernetes.io/v1.0/docs/user-guide/images.html#using-a-private-registry https://github.com/kubernetes/kubernetes/issues/7954 Leads me to beli...	I am attempting to pull private docker images from Docker Hub. Error: image orgname/imagename:latest not found The info I am seeing on the internet... http://kubernetes.io/v1.0/docs/user-guide/images.html#using-a-private-registry https://github.com/kubernetes/kubernetes/issues/7954 Leads me to believe I should be ...
Tl;Dr: Watch this space for Kubernetes 1.2 Till now Kubernetes has only supported L4 loadbalancing. This means the GCE/GKE loadbalancer opens up a tcp connection and just sends traffic to your backend, which is responsible for terminating ssl. As of Kubernetes 1.1, Kubernetes has an "Ingress" resource, but it's current...	###Instruction: Background: I'm pretty new to the Google's Cloud platform so I want to make sure that I'm not is missing anything obvious. We're experimenting with GKE and Kubernetes and we'd like to expose some services over https. I've read the documentation for http(s) load-balancing which seem to suggest that you ...	Background: I'm pretty new to the Google's Cloud platform so I want to make sure that I'm not is missing anything obvious. We're experimenting with GKE and Kubernetes and we'd like to expose some services over https. I've read the documentation for http(s) load-balancing which seem to suggest that you should maintain ...
use the latest kubernetes and pass the params --proxy-mode=iptables to kube-proxy start command, HDFS cluster works now	###Instruction: I deployed kubernetes with flanneld.service enabled in coreos. And then I started hdfs namenode and datanode via kubernetes replication-controller. I also created kubernetes service for namenode. The namenode service ip is 10.100.220.223, while the pod ip of namenode is 10.20.96.4. In my case, one namen...	I deployed kubernetes with flanneld.service enabled in coreos. And then I started hdfs namenode and datanode via kubernetes replication-controller. I also created kubernetes service for namenode. The namenode service ip is 10.100.220.223, while the pod ip of namenode is 10.20.96.4. In my case, one namenode and one data...
Flocker is supported in Kubernetes release 1.1. A Flocker dataset can be referenced from a PersistentVolume or directly from a Pod volume. http://kubernetes.io/v1.1/examples/flocker/ http://kubernetes.io/v1.1/docs/api-reference/v1/definitions.html#_v1_persistentvolume	###Instruction: Kubernetes volume support flocker? If support flocker volume, give an example about using flocker volume? Thanks! ### Response: Flocker is supported in Kubernetes release 1.1. A Flocker dataset can be referenced from a PersistentVolume or directly from a Pod volume. http://kubernetes.io/v1.1/example...	Kubernetes volume support flocker? If support flocker volume, give an example about using flocker volume? Thanks!
"kubectl describe pod busybox" or "kubectl get pod busybox -o yaml" output could be useful. Since you didn't specify, I assume that the busybox pod was created in the default namespace, and that no resource requirements nor nodeSelectors were specified. In many cluster setups, including vagrant, we create a LimitRange...	###Instruction: I have a picture below of my mac. K8S Cluster(on VirtualBox, 1master, 2workers) OS Ubuntu 15.04 K8S version 1.1.1 When I try to create a pod "busybox.yaml" it goes to pending status. How can I resolve it? I pasted the online status below for understanding with a picture (kubectl describe node). Sta...	I have a picture below of my mac. K8S Cluster(on VirtualBox, 1master, 2workers) OS Ubuntu 15.04 K8S version 1.1.1 When I try to create a pod "busybox.yaml" it goes to pending status. How can I resolve it? I pasted the online status below for understanding with a picture (kubectl describe node). Status kubectl get ...
I noted your use case in the feature request for exposing secrets as environment variables: https://github.com/kubernetes/kubernetes/issues/4710 It's mainly the quoting that makes this tricky in shell. The following worked for me interactively and should work in a script, but additional quoting would be needed if speci...	###Instruction: Update: Kubernetes supports adding secrets directly to environment variables now. See pod example on github Original post: I've been using files created by Kubernetes Secrets to store sensitive configs, but I always end up writing an extra layer into the containers or overriding the CMD to get the cont...	Update: Kubernetes supports adding secrets directly to environment variables now. See pod example on github Original post: I've been using files created by Kubernetes Secrets to store sensitive configs, but I always end up writing an extra layer into the containers or overriding the CMD to get the contents of the secr...
You can do this a few ways, one is keep doing what you're doing in a single file, another is to use labels to specify which environment's config to use, and the other is use namespaces. I personally recommend namespaces, this way you can have separate .yml files for each environment that potentially spins up the same ...	###Instruction: We are moving our ruby microservices to kubernetes and we used to hold environment specific configuration in the config/application.yml. With kubernetes, you can create environment specific files for each service, e.g. config/kubernetes/production.yml etc. While kubernetes pod configuration file is abl...	We are moving our ruby microservices to kubernetes and we used to hold environment specific configuration in the config/application.yml. With kubernetes, you can create environment specific files for each service, e.g. config/kubernetes/production.yml etc. While kubernetes pod configuration file is able to hold enviro...
I finally solved the problem. In the yaml files describing the Replication Controllers, I was using keyring: in the volume section: keyring: "ceph.client.admin.keyring" After I generated a Ceph secret and changed the yaml files to use secretRef: secretRef: name: "ceph-secret" Kubernetes was able to map and mount t...	###Instruction: I am setting up a small Kubernetes cluster using a VM (master) and 3 bare metal servers (all running Ubuntu 14.04). I followed the Kubernetes install tutorial for Ubuntu. Each bare metal server also has 2T of disk space exported using Ceph 0.94.5. Everything is working fine, but when I try to start a Re...	I am setting up a small Kubernetes cluster using a VM (master) and 3 bare metal servers (all running Ubuntu 14.04). I followed the Kubernetes install tutorial for Ubuntu. Each bare metal server also has 2T of disk space exported using Ceph 0.94.5. Everything is working fine, but when I try to start a Replication Contro...
Currently, Google Cloud Platform Networks only support IPv4, so connecting to IPv6 addresses from GKE is not possible.	###Instruction: Background I'd like to connect Wordpress docker container to a Google Could SQL instance. By default Google Cloud SQL only expose an IPv6 address and preferably I'd like to connect Wordpress to this address but I can't find a way to do so (see my other stackoverflow post for details). Question I'd like ...	Background I'd like to connect Wordpress docker container to a Google Could SQL instance. By default Google Cloud SQL only expose an IPv6 address and preferably I'd like to connect Wordpress to this address but I can't find a way to do so (see my other stackoverflow post for details). Question I'd like to know if it's ...
The issue is that your client (kubectl) doesn't support the new ingress resource because it hasn't been updated to 1.1 yet. This is mentioned in the Google Container Engine release notes: The packaged kubectl is version 1.0.7, consequently new Kubernetes 1.1 APIs like autoscaling will not be available via kubectl un...	###Instruction: I'd like to try out the new Ingress resource available in Kubernetes 1.1 in Google Container Engine (GKE). But when I try to create for example the following resource: apiVersion: extensions/v1beta1 kind: Ingress metadata: name: test-ingress spec: backend: serviceName: testsvc servicePort: ...	I'd like to try out the new Ingress resource available in Kubernetes 1.1 in Google Container Engine (GKE). But when I try to create for example the following resource: apiVersion: extensions/v1beta1 kind: Ingress metadata: name: test-ingress spec: backend: serviceName: testsvc servicePort: 80 using: $ ku...
The warning is so that folks don't assume that using emptyDir provides a persistent storage layer. An emptyDir volume will persist as long as the pod is running on the same host. But if the host is replaced or it's disk becomes corrupted, then all data would be lost. Using network mounted storage is one way to work aro...	###Instruction: In the Kubernetes example of Elasticsearch production deployment, there is a warning about using emptyDir, and advises to "be adapted according to your storage needs", which is linked to the documentation of persistent storage on Kubernetes. Is it better to use a persistent storage, which is an external...	In the Kubernetes example of Elasticsearch production deployment, there is a warning about using emptyDir, and advises to "be adapted according to your storage needs", which is linked to the documentation of persistent storage on Kubernetes. Is it better to use a persistent storage, which is an external storage for the...
I started a bash shell inside the container and executed my command instead and that turned out to work: command: ["/bin/bash", "-c", "PID=`pidof java` && kill -SIGTERM $PID && while ps -p $PID > /dev/null; do sleep 1; done;"] Without /bin/bash I couldn't get it working.	###Instruction: I've read the docs on graceful termination of a pod in Kubernetes but I'm not quite sure how to map my specific use case of shutting down a Java process gracefully. What I want to do is to run the following bash command as a part of the termination process: $ kill -SIGTERM `pidof java` I've tried this:...	I've read the docs on graceful termination of a pod in Kubernetes but I'm not quite sure how to map my specific use case of shutting down a Java process gracefully. What I want to do is to run the following bash command as a part of the termination process: $ kill -SIGTERM `pidof java` I've tried this: ... lifecyc...
As of Kubernetes v1.1, you can now implement a Horizontal Pod Autoscaler: http://kubernetes.io/v1.1/docs/user-guide/horizontal-pod-autoscaler.html	###Instruction: I'm developing a Docker-based web service, where each subscriber has private access to their own Docker container running in the cloud, exposing port 443. I've used nginx-proxy/docker-gen successfully to serve multiple Docker containers from the same VM, with just port 443 exposed to the public net. Thi...	I'm developing a Docker-based web service, where each subscriber has private access to their own Docker container running in the cloud, exposing port 443. I've used nginx-proxy/docker-gen successfully to serve multiple Docker containers from the same VM, with just port 443 exposed to the public net. This works fine ......
Firstly, please see https://github.com/kubernetes/kubernetes/issues/11793#issuecomment-150410114 if you haven't already. I guess I can kill and restart pod using a mechanism similar to that used by kubectl delete and create but I am unable to get all the required pod and node lists. I would suggest writing a control ...	###Instruction: I want to implement a rescheduler like functionality which basically kills pods if it decides that the pods could be rescheduled in a better way (based on requiring less number of nodes/fitting etc). Till now I have created a new kubectl command which I want to run whenever I want to reschedule. I have ...	I want to implement a rescheduler like functionality which basically kills pods if it decides that the pods could be rescheduled in a better way (based on requiring less number of nodes/fitting etc). Till now I have created a new kubectl command which I want to run whenever I want to reschedule. I have also looked at t...
It appears that you can't currently set a ulimit but it is an open issue: https://github.com/kubernetes/kubernetes/issues/3595	###Instruction: How do I set ulimit for containers in Kubernetes? (specifically ulimit -u) ### Response: It appears that you can't currently set a ulimit but it is an open issue: https://github.com/kubernetes/kubernetes/issues/3595	How do I set ulimit for containers in Kubernetes? (specifically ulimit -u)
I found the Solution， the reason is the version of kube-apiserver,kube-controller-manager and kube-scheduler does not match with the kubelet. the detail: https://github.com/kubernetes/kubernetes/issues/17154	###Instruction: I create a kubernetes cluster to test. but cannot create rc. I got errorreason: 'failedScheduling' no nodes available to schedule pods: I1112 04:24:34.626614 6 factory.go:214] About to try and schedule pod my-nginx-63t4p I1112 04:24:34.626635 6 scheduler.go:127] Failed to schedule: &{{ } {my...	I create a kubernetes cluster to test. but cannot create rc. I got errorreason: 'failedScheduling' no nodes available to schedule pods: I1112 04:24:34.626614 6 factory.go:214] About to try and schedule pod my-nginx-63t4p I1112 04:24:34.626635 6 scheduler.go:127] Failed to schedule: &{{ } {my-nginx-63t4p my-...