kubeapp | Some commonly used kubernetes app
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kandi X-RAY | kubeapp Summary
Some commonly used kubernetes app ~~~
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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 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
We are currently using 2 Nodes, but we may need more in the future.
The StatefulSets is a mariadb-galera is current replica is at 2.
When we'll had a new Nodes we want the replica to be a 3, f we don't need it anymore and we delete it or a other Node we want it to be a 2.
In fact, if we have 3 Nodes we want 3 replica one on each Nodes.
I could use Pod Topology Spread Constraints but we'll have a bunch of "notScheduled" pods.
Is there a way to adapt the number of Replica automatically, every time a nodes is add or remove?
...ANSWER
Answered 2020-Oct-26 at 21:33You could use a Daemon Set https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/
Which will ensure there is one pod per node.
A DaemonSet ensures that all (or some) Nodes run a copy of a Pod. As nodes are added to the cluster, Pods are added to them. As nodes are removed from the cluster, those Pods are garbage collected. Deleting a DaemonSet will clean up the Pods it created.
Also, its not advised to run a database in anything else than a statefulset due to the pod identity concept as statefulsets have.
Due to all the database administration it is advisable to use any cloud provider managed databases or managing it, specially inside the cluster will incur in multiple issues
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No vulnerabilities reported
Install kubeapp
You can use kubeapp like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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