The viewnode displays Kubernetes cluster nodes with their pods and containers.
It is very useful when you need to monitor multiple resources such as nodes, pods or containers in a dynamic environment like a CI/CD platform.
Usage:
viewnode [flags]
viewnode [command]
Available Commands:
help Help about any command
version Plugin Version
Flags:
-A, --all-namespaces use all namespaces
-b, --container-block-view format view of containers as a text block, otherwise inline
-h, --help help for viewnode
-n, --namespace string namespace to use
-f, --node-filter string show only nodes according to filter
-p, --pod-filter string show only pods according to filter
-c, --show-containers show containers in pod
-t, --show-pod-start-times show start times of pods
-r, --show-requests-and-limits show requests and limits for containers' cpu and memory (requires -c flag)
--show-running-only show running pods only
-v, --verbosity string defines log level (debug, info, warn, error, fatal, panic) (default "warning")
Use "viewnode [command] --help" for more information about a command.
Follow the instructions to install krew and then run the following command:
kubectl krew install viewnode
The plugin will be available as kubectl viewnode.
The viewnode is written in go, so just download the correct executable suitable for your platform from the releases and run it.
You can also download the source code from GitHub and compile it by running the following command:
make build
Showing nodes and pods:
$ viewnode
namespace: jenkins-onprem
8 pod(s) in total
0 unscheduled pod(s)
3 running node(s) with 8 scheduled pod(s):
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-8fws running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-341-ffkt5-2k64t (running)
* docker-in-the-cloud-86-822pd-d6p3d (running)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-b0np running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-338-3wc8r-n1t7z (running)
* docker-in-the-cloud-340-cms5r-pxxq7 (running)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-v1vr running 4 pod(s) (linux/amd64)
* docker-in-the-cloud-337-4c4lm-q3mtp (running)
* docker-in-the-cloud-339-4x9dq-0xd3q (running)
* docker-in-the-cloud-342-r5khq-9cx2w (running)
* liveness-test-4-boom (failed)
Showing nodes, pods and containers:
$ viewnode --show-containers
namespace: jenkins-onprem
8 pod(s) in total
0 unscheduled pod(s)
3 running node(s) with 8 scheduled pod(s):
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-8fws running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-341-ffkt5-2k64t (running) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-86-822pd-d6p3d (running) (3: default/running docker-daemon/running jnlp/terminated)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-b0np running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-338-3wc8r-n1t7z (running) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-340-cms5r-pxxq7 (running) (3: default/running docker-daemon/running jnlp/running)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-v1vr running 4 pod(s) (linux/amd64)
* docker-in-the-cloud-337-4c4lm-q3mtp (running) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-339-4x9dq-0xd3q (running) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-342-r5khq-9cx2w (running) (3: default/running docker-daemon/running jnlp/running)
* liveness-test-4-boom (failed) (3: dead-container/terminated liveness1/running liveness2/running)
Showing nodes and pods with their start times:
$ viewnode --show-pod-start-times
namespace: jenkins-onprem
8 pod(s) in total
0 unscheduled pod(s)
3 running node(s) with 8 scheduled pod(s):
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-8fws running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-341-ffkt5-2k64t (running/Thu Aug 26 09:36:04 CEST 2021)
* docker-in-the-cloud-86-822pd-d6p3d (running/Thu Aug 19 09:09:20 CEST 2021)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-b0np running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-338-3wc8r-n1t7z (running/Thu Aug 26 09:36:02 CEST 2021)
* docker-in-the-cloud-340-cms5r-pxxq7 (running/Thu Aug 26 09:36:04 CEST 2021)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-v1vr running 4 pod(s) (linux/amd64)
* docker-in-the-cloud-337-4c4lm-q3mtp (running/Thu Aug 26 09:35:36 CEST 2021)
* docker-in-the-cloud-339-4x9dq-0xd3q (running/Thu Aug 26 09:36:03 CEST 2021)
* docker-in-the-cloud-342-r5khq-9cx2w (running/Thu Aug 26 09:36:05 CEST 2021)
* liveness-test-4-boom (failed/Wed Aug 25 15:07:52 CEST 2021)
You can also combine show options:
$ viewnode --show-pod-start-times --show-containers
namespace: jenkins-onprem
8 pod(s) in total
0 unscheduled pod(s)
3 running node(s) with 8 scheduled pod(s):
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-8fws running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-341-ffkt5-2k64t (running/Thu Aug 26 09:36:04 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-86-822pd-d6p3d (running/Thu Aug 19 09:09:20 CEST 2021) (3: default/running docker-daemon/running jnlp/terminated)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-b0np running 2 pod(s) (linux/amd64)
* docker-in-the-cloud-338-3wc8r-n1t7z (running/Thu Aug 26 09:36:02 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-340-cms5r-pxxq7 (running/Thu Aug 26 09:36:04 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-v1vr running 4 pod(s) (linux/amd64)
* docker-in-the-cloud-337-4c4lm-q3mtp (running/Thu Aug 26 09:35:36 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-339-4x9dq-0xd3q (running/Thu Aug 26 09:36:03 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
* docker-in-the-cloud-342-r5khq-9cx2w (running/Thu Aug 26 09:36:05 CEST 2021) (3: default/running docker-daemon/running jnlp/running)
* liveness-test-4-boom (failed/Wed Aug 25 15:07:52 CEST 2021) (3: dead-container/terminated liveness1/running liveness2/running)
As well as filter nodes and pods:
$ viewnode --node-filter v1vr
namespace: jenkins-onprem
4 pod(s) in total
0 unscheduled pod(s)
1 running node(s) with 4 scheduled pod(s):
- gke-dcgsecigke001-dcgsecigke001-linux-1cd8c3b9-v1vr running 4 pod(s) (linux/amd64)
* docker-in-the-cloud-337-4c4lm-q3mtp (running)
* docker-in-the-cloud-339-4x9dq-0xd3q (running)
* docker-in-the-cloud-342-r5khq-9cx2w (running)
* liveness-test-4-boom (failed)
Very popular is combining viewnode with watch command e.g. watching all nodes, pods and containers every second can be configured as follows:
watch -n1 viewnode --show-pod-start-times --show-containers
The viewnode was tested against Google Cloud Platform and Amazon EKS with Kubernetes v1.19 and v1.20.
It should however work with any cloud platform supported by the client-go.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent