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diff --git a/packaging/installer/methods/kubernetes.md b/packaging/installer/methods/kubernetes.md index 142c098b4..4dde3f407 100644 --- a/packaging/installer/methods/kubernetes.md +++ b/packaging/installer/methods/kubernetes.md @@ -1,112 +1,122 @@ -<!-- -title: "Deploy Kubernetes monitoring with Netdata" -description: "Deploy Netdata to monitor a Kubernetes cluster to monitor the health, performance, resource utilization, and application metrics of a Kubernetes cluster in real time." -custom_edit_url: "https://github.com/netdata/netdata/edit/master/packaging/installer/methods/kubernetes.md" -sidebar_label: "Deploy Kubernetes monitoring with Netdata" -learn_status: "Published" -learn_topic_type: "Tasks" -learn_rel_path: "Installation" ---> - -# Deploy Kubernetes monitoring with Netdata - -This document details how to install Netdata on an existing Kubernetes (k8s) cluster. By following these directions, you -will use Netdata's [Helm chart](https://github.com/netdata/helmchart) to create a Kubernetes monitoring deployment on -your cluster. - -The Helm chart installs one `parent` pod for storing metrics and managing alarm notifications, plus an additional +import Tabs from '@theme/Tabs'; +import TabItem from '@theme/TabItem'; + +# Install Netdata on Kubernetes + +This document details how to install Netdata on an existing Kubernetes (k8s) cluster, and connect it to Netdata Cloud. Read our [Kubernetes visualizations](https://github.com/netdata/netdata/blob/master/docs/cloud/visualize/kubernetes.md) documentation, to see what you will get. + +The [Netdata Helm chart](https://github.com/netdata/helmchart/blob/master/charts/netdata/README.md) installs one `parent` pod for storing metrics and managing alarm notifications, plus an additional `child` pod for every node in the cluster, responsible for collecting metrics from the node, Kubernetes control planes, pods/containers, and [supported application-specific metrics](https://github.com/netdata/helmchart#service-discovery-and-supported-services). +### Prerequisites + To deploy Kubernetes monitoring with Netdata, you need: -- A working cluster running Kubernetes v1.9 or newer. -- The [kubectl](https://kubernetes.io/docs/reference/kubectl/overview/) command line tool, within [one minor version +- A working cluster running Kubernetes v1.9 or newer. +- The [kubectl](https://kubernetes.io/docs/reference/kubectl/overview/) command line tool, within [one minor version difference](https://kubernetes.io/docs/tasks/tools/install-kubectl/#before-you-begin) of your cluster, on an administrative system. -- The [Helm package manager](https://helm.sh/) v3.0.0 or newer on the same administrative system. +- The [Helm package manager](https://helm.sh/) v3.0.0 or newer on the same administrative system. +- A Netdata Cloud account with a Space to connect the cluster to. -## Install the Netdata Helm chart +## Deploy Netdata on your Kubernetes Cluster -We recommend you install the Helm chart using our Helm repository. In the `helm install` command, replace `netdata` with -the release name of your choice. +First, you need to add the Netdata helm repository, and then install Netdata. +The installation process securely connects your Kubernetes cluster to stream metrics data to Netdata Cloud, enabling Kubernetes-specific visualizations like the health map and time-series composite charts. -```bash -helm repo add netdata https://netdata.github.io/helmchart/ -helm install netdata netdata/netdata -``` +<Tabs groupId="installation_type"> +<TabItem value="new_installations" label="New Installations"> -Run `kubectl get services` and `kubectl get pods` to confirm that your cluster now runs a `netdata` service, one -parent pod, and multiple child pods. +<h3> Install Netdata via the <code>helm install</code> command </h3> -You've now installed Netdata on your Kubernetes cluster. Next, it's time to opt-in and enable the powerful Kubernetes -dashboards available in Netdata Cloud. +#### Steps -## Connect your Kubernetes cluster to Netdata Cloud +1. Add the Netdata Helm chart repository by running: -To start [Kubernetes monitoring](https://github.com/netdata/netdata/blob/master/docs/cloud/visualize/kubernetes.md), you must first -[connect](https://github.com/netdata/netdata/blob/master/claim/README.md) your Kubernetes cluster to [Netdata Cloud](https://app.netdata.cloud). The connection process securely -connects your Kubernetes cluster to stream metrics data to Netdata Cloud, enabling Kubernetes-specific visualizations -like the health map and time-series composite charts. + ```bash + helm repo add netdata https://netdata.github.io/helmchart/ + ``` -### New installations +2. To install Netdata using the `helm install` command, run: -First, find the script to run an `helm install` command. You can get it by clicking on your Space's dropdown, then **Manage your Space**. -Click the **Nodes** tab and select the environment your node is running, in this case **kubernetes**, to reveal the script for your Space in Netdata Cloud. You need the `TOKEN` -and `ROOM` values. + ```bash + helm install netdata netdata/netdata + ``` -The script should be similar to: + > ### Note + > + > If you plan to connect the node to Netdata Cloud, you can find the command with the right parameters by clicking the "Add Nodes" button in your Space's Nodes tab. -```bash -helm install netdata netdata/netdata --set parent.claiming.enabled="true" --set parent.claiming.token="TOKEN" --set parent.claiming.rooms="ROOM" --set child.claiming.enabled=true --set child.claiming.token="TOKEN" --set child.claiming.rooms="ROOM" -``` + For more installation options, please read our [Netdata Helm chart for Kubernetes](https://github.com/netdata/helmchart/blob/master/charts/netdata/README.md) reference. -### Existing installations +#### Expected Result -On an existing installation, you will need to override the configuration values by running the `helm upgrade` command and provide a file with the values to override. You can start with creating a file called `override.yml`. +Run `kubectl get services` and `kubectl get pods` to confirm that your cluster now runs a `netdata` service, one parent pod, and multiple child pods. -```bash -touch override.yml -``` +</TabItem> +<TabItem value="existing_installations" label="Existing Installations"> -Paste the following into your `override.yml` file, replacing instances of `ROOM` and `TOKEN` with those from the script from Netdata Cloud. These settings connect your `parent`/`child` nodes to Netdata Cloud and store more -metrics in the nodes' time-series databases. - -```yaml -parent: - claiming: - enabled: true - token: "TOKEN" - rooms: "ROOM" - -child: - claiming: - enabled: true - token: "TOKEN" - rooms: "ROOM" - configs: - netdata: - data: | - [global] - memory mode = ram - history = 3600 - [health] - enabled = no -``` +<h3> Connect an existing Netdata installation to Netdata Cloud </h3> -> ❗ These override settings, along with the Helm chart's defaults, will retain an hour's worth of metrics (`history = -> 3600`, or `3600 seconds`) on each child node. Based on your metrics retention needs, and the resources available on -> your cluster, you may want to increase the `history` setting. +On an existing installation, in order to connect it to Netdata Cloud you will need to override the configuration values by running the `helm upgrade` command and provide a file with the values to override. -Apply these new settings: +#### Steps -```bash -helm upgrade -f override.yml netdata netdata/netdata -``` +1. You can start with creating a file called `override.yml` -The cluster terminates the old pods and creates new ones with the proper persistence and connection configuration. You'll -see your nodes, containers, and pods appear in Netdata Cloud in a few seconds. + ```bash + touch override.yml + ``` + +2. Paste the following into your `override.yml` file. + + ```yaml + parent: + claiming: + enabled: true + token: YOUR_CLAIM_TOKEN + rooms: YOUR_ROOM_ID_A,YOUR_ROOM_ID_B + + child: + claiming: + enabled: true + token: YOUR_CLAIM_TOKEN + rooms: YOUR_ROOM_ID_A,YOUR_ROOM_ID_B + configs: + netdata: + data: | + [global] + memory mode = ram + history = 3600 + [health] + enabled = no + ``` + + > :bookmark_tabs: Note + > + > Make sure to replace `YOUR_CLAIM_TOKEN` with the claim token of your space, + > and `YOUR_ROOM_ID` with the ID of the room you are willing to connect to. + + These settings connect your `parent`/`child` nodes to Netdata Cloud and store more metrics in the nodes' time-series databases. + + > :bookmark_tabs: Info + > + > These override settings, along with the Helm chart's defaults, will retain an hour's worth of metrics (`history = 3600`, or `3600 seconds`) on each child node. Based on your metrics retention needs, and the resources available on your cluster, you may want to increase the `history` setting. + +3. To apply these new settings, run: + + ```bash + helm upgrade -f override.yml netdata netdata/netdata + ``` + +#### Expected Result + +The cluster terminates the old pods and creates new ones with the proper persistence and connection configuration. You'll see your nodes, containers, and pods appear in Netdata Cloud in a few seconds. + +</TabItem> +</Tabs>  @@ -119,8 +129,7 @@ in Netdata, in addition to more guides and resources. Read up on the various configuration options in the [Helm chart documentation](https://github.com/netdata/helmchart#configuration) if you need to tweak your Kubernetes monitoring. -Your first option is to create an `override.yml` file, if you haven't created one already for -[connect](#connect-your-kubernetes-cluster-to-netdata-cloud), then apply the new configuration to your cluster with `helm +Your first option is to create an `override.yml` file, if you haven't created one already upon [deploying](#deploy-netdata-on-your-kubernetes-cluster), then apply the new configuration to your cluster with `helm upgrade`. ```bash @@ -140,8 +149,7 @@ Netdata's [service discovery](https://github.com/netdata/agent-service-discovery of the Helm chart installation, finds what services are running in a cluster's containers and automatically collects service-level metrics from them. -Service discovery supports [popular applications](https://github.com/netdata/helmchart#applications) and [Prometheus -endpoints](https://github.com/netdata/helmchart#prometheus-endpoints). +Service discovery supports [popular applications](https://github.com/netdata/helmchart#applications) and [Prometheus endpoints](https://github.com/netdata/helmchart#prometheus-endpoints). If your cluster runs services on non-default ports or uses non-default names, you may need to configure service discovery to start collecting metrics from your services. You have to edit the default ConfigMap that is shipped with @@ -153,8 +161,7 @@ First, copy the default file to your administrative system. curl https://raw.githubusercontent.com/netdata/helmchart/master/charts/netdata/sdconfig/child.yml -o child.yml ``` -Edit the new `child.yml` file according to your needs. See the [Helm chart -configuration](https://github.com/netdata/helmchart#configuration) and the file itself for details. +Edit the new `child.yml` file according to your needs. See the [Helm chart configuration](https://github.com/netdata/helmchart#configuration) and the file itself for details. You can then run `helm upgrade` with the `--set-file` argument to use your configured `child.yml` file instead of the default, changing the path if you copied it elsewhere. @@ -184,18 +191,10 @@ helm upgrade netdata netdata/netdata ## What's next? -[Start Kubernetes monitoring](https://github.com/netdata/netdata/blob/master/docs/cloud/visualize/kubernetes.md) in Netdata Cloud, which -comes with meaningful visualizations out of the box. - -Read our guide, [_Kubernetes monitoring with Netdata: Overview and -visualizations_](https://github.com/netdata/netdata/blob/master/docs/guides/monitor/kubernetes-k8s-netdata.md), for a complete walkthrough of Netdata's Kubernetes -monitoring capabilities, including a health map of every container in your infrastructure, aggregated resource -utilization metrics, and application metrics. +[Start Kubernetes monitoring](https://github.com/netdata/netdata/blob/master/docs/cloud/visualize/kubernetes.md) in Netdata Cloud, which comes with meaningful visualizations out of the box. ### Related reference documentation - [Netdata Cloud · Kubernetes monitoring](https://github.com/netdata/netdata/blob/master/docs/cloud/visualize/kubernetes.md) - [Netdata Helm chart](https://github.com/netdata/helmchart) - [Netdata service discovery](https://github.com/netdata/agent-service-discovery/) - - |