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QUESTION
I'm trying to deploy the ELK stack to my developing kubernetes cluster. It seems that I do everything as described in the tutorials, however, the pods keep failing with Java errors (see below). I will describe the whole process from installing the cluster until the error happens.
Step 1: Installing the cluster
...ANSWER
Answered 2021-May-26 at 05:06For the ELK stack to work you need all three PersistentVolumeClaim's to be bound as I recall. Instead of creating 1 30 GB of PV create 3 of the same size with the claims and then re-install. Other nodes have unmet dependincies.
Also please do not handle the volumes by hand. There are guidelines to deploy dynamic volums. Use OpenEBS for example. That way you wont need to worry about the pvc's. After giving the pv's if anything happens write again with your cluster installation process.
I was wrong obviously, in this particular problem, filesystems and cgroups take role and the main problem of this is an old problem. From 5.2.1 to 8.0.0. Reinstall the chart by pulling the chart. Edit values file and definitely change the container version. It should be fine or create another error log stack.
QUESTION
Installing grafana using helm charts, the deployment goes well and the grafana ui is up, needed to add an existence persistence volume, ran the below cmd:
...ANSWER
Answered 2021-May-23 at 05:42NFS turns on root_squash
mode by default which functionally disables uid 0 on clients as a superuser (maps those requests to some other UID/GID, usually 65534). You can disable this in your mount options, or use something other than NFS. I would recommend the latter, NFS is bad.
QUESTION
I searched for a solution to have confluentic-kafka work with ingress, and I reached this PR that did such implementation, but this PR isn't accepted (yet - the repository owner dropped and the repo doesn't exist any more).
So, I tried to implement something very simple as a proof of concept using as a reference this manual.
Currently I have ingress enabled:
...ANSWER
Answered 2021-May-19 at 14:11It worked only when I started my minikube without a driver (to be created on the storage of the machine and not as a VM) and specifying the 9.x ingress network ip (to get it I ran: ip a
):
QUESTION
I am working with https://github.com/prometheus-community/helm-charts and am running into some issues with a couple of regex queries are a part of our basic yaml deployments. The issue I'm having is specifically with the Node exporter part of the prometheus chart. I have configured this:
...ANSWER
Answered 2021-Apr-22 at 10:26With {
, you are beginning a YAML flow mapping. It typically contains comma-separated key-value pairs, though you can also, like in this example, give single values instead, which will make them a key with null
value.
In YAML, as soon as you enter a flow-style collection, all special flow-indicators cannot be used in plain scalars anymore. Special flow indicators are {}[],
. A plain scalar is a non-quoted textual value.
The first broken value is illegal because it contains [
and ]
. The second broken value is actually legal according to the specification, but quite some YAML implementations choke on it because ?
is also used as indicator for a mapping key.
You have several options:
- Quote the scalars. since none of them contain single quotes, enclosing each with single quotes will do the trick. Generally you can also double-quote them, but then you need to escape all double-quote characters and all backslashes in there which does not help readability.
QUESTION
So I installed kube-prometheus-stack
from this tutorial:
ANSWER
Answered 2021-Apr-16 at 17:02I'm have deployed version 7.3.5 of Grafana, and I only could achieve this by removing the login screen completely.
In the values.yaml
of your Grafana chart look for the grafana.ini
level. Then append the following config value pairs:
QUESTION
I have a react SPA (Single Page Application) and want to deploy it to a Kubernetes environment. For the sake of keeping it simple, assume the SPA is stand alone.
I've been told Bitnami's repo for Helm Charts are a good place to start to solve this problem. So my question is what Bitnami chart should I use to deploy a react SPA to a Kubernetes cluster? And where can I find the steps explained?
What I wantThe desired solution should be a Helm Chart that serves up static content. Typically app.js and index.html page, and other static content. And lets me specify the sub-directory to use as the contents of the website. In react, the build
subdirectory holds the website.
What I currently do is described below. I'm starting from a new app created by create-react-app
so that others could follow along and do this if needed to helm answer the question.
This assumes you have Docker, Kubernetes and helm installed (as well as node and npm for React).
The following commands do the following:
- Create a new React application
- Create a docker container for it.
- Build and test the SPA running in a local docker image .
- Create a helm chart to deploy the image to K8S.
- Configure the helm chart so it uses the docker image created in step 3.
- Using the helm CLI deploy the SPA app to the k8s cluster.
- Test the SPA running in k8s cluster.
ANSWER
Answered 2021-Apr-09 at 03:52A search for "What bitnami chart should I use to deploy a React SPA?" is what worked for me. See https://docs.bitnami.com/tutorials/deploy-react-application-kubernetes-helm/.
I'll summarize the steps below but this website should be around for a while.
The Binami ApproachStep 1: Build and test a custom Docker image Step 2: Publish the Docker image Step 3: Deploy the application on Kubernetes
Step 1: Build and test a custom Docker imageThe website provides a sample react app
QUESTION
I have installed kube-prometheus-stack as a dependency in my helm chart on a local Docker for Mac Kubernetes cluster v1.19.7.
The myrelease-name-prometheus-node-exporter service is failing with errors received from the node-exporter daemonset after installation of the helm chart for kube-prometheus-stack is installed. This is installed in a Docker Desktop for Mac Kubernetes Cluster environment.
release-name-prometheus-node-exporter daemonset error log
...ANSWER
Answered 2021-Apr-01 at 08:10This issue was solved recently. Here is more information: https://github.com/prometheus-community/helm-charts/issues/467 and here: https://github.com/prometheus-community/helm-charts/pull/757
Here is the solution (https://github.com/prometheus-community/helm-charts/issues/467#issuecomment-802642666):
[you need to] opt-out the rootfs host mount (preventing the crash). In order to do that you need to specify the following value in values.yaml file:
QUESTION
I am trying to deploy to the Azure Kubernetes cluster using Helm charts. While trying to execute following command:
helm install --namespace custom-namspace my-project ./my-project
I am getting following error:
...ANSWER
Answered 2021-Apr-01 at 07:47I tried to debug the helm chart using the following command:
QUESTION
I have installed kube-prometheus-stack as a dependency in my helm chart on a local docker for Mac Kubernetes cluster v1.19.7. I can view the default prometheus targets provided by the kube-prometheus-stack.
I have a python flask service that provides metrics which I can view successfully in the kubernetes cluster using kubectl port forward
.
However, I am unable to get these metrics displayed on the prometheus targets web interface.
The kube-prometheus-stack documentation states that Prometheus.io/scrape does not support annotation-based discovery of services. Instead the the reader is referred to the concept of ServiceMonitors
and PodMonitors
.
So, I have configured my service as follows:
...ANSWER
Answered 2021-Mar-30 at 17:33Prometheus custom resource definition has a field called serviceMonitorSelector
. Prometheus only listens to those matched serviceMonitor. In case of helm deployment it is your release name.
QUESTION
I've code to deploy a helm chart using pulumi
kubernetes.
I would like to patch the StatefulSet
(change serviceAccountName
) after deploying the chart. Chart doesn't come with an option to specify service account for StatefulSet
.
here's my code
...ANSWER
Answered 2021-Mar-25 at 14:15Pulumi has a powerful feature called Transformations which is exactly what you need here(Example). A transformation is a callback that gets invoked by the Pulumi runtime and can be used to modify resource input properties before the resource is created.
I've not tested the code but you should get the idea:
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