177 lines
5.2 KiB
Markdown
177 lines
5.2 KiB
Markdown
# Kruise-tools
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kubectl plugin for OpenKruise
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[Kruise-tools](https://github.com/openkruise/kruise-tools) provides commandline tools for kruise features, such as `kubectl-kruise`, which is a standard plugin of `kubectl`.
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## Install
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### Install via Krew
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1. [Krew](https://krew.sigs.k8s.io/) itself is a kubectl plugin that is installed and updated via Krew (yes, Krew self-hosts).
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First, [install krew](https://krew.sigs.k8s.io/docs/user-guide/setup/install/).
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2. Run `kubectl krew install kruise` to install kruise plugin via Krew.
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3. Then you can use it with `kubectl-kruise` or `kubectl kruise`.
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```bash
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$ kubectl-kruise --help
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# or
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$ kubectl kruise --help
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```
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### Install manually
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1. You can simply download the binary from the [releases](https://github.com/openkruise/kruise-tools/releases) page. Currently `linux`, `darwin`(OS X), `windows` with `x86_64` and `arm64` are provided. If you are using some other systems or architectures, you have to download the source code and execute `make build` to build the binary.
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2. Extract and move it to system PATH.
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```bash
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$ tar xvf kubectl-kruise-darwin-amd64.tar.gz
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$ mv darwin-amd64/kubectl-kruise /usr/local/bin/
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```
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3. Then you can use it with `kubectl-kruise` or `kubectl kruise`.
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```bash
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$ kubectl-kruise --help
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# or
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$ kubectl kruise --help
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```
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## Upgrade
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### Upgrade via krew
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Run `kubectl krew upgrade kruise` to upgrade kruise plugin via Krew.
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### Upgrade manually
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Same to `install manually`.
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## Usage
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### expose
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Take a workload(e.g. deployment, cloneset), service or pod and expose it as a new Kubernetes Service.
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```bash
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$ kubectl kruise expose cloneset nginx --port=80 --target-port=8000
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```
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### scale
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Set a new size for a Deployment, ReplicaSet, CloneSet, or Advanced StatefulSet.
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```bash
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$ kubectl kruise scale --replicas=3 cloneset nginx
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```
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It equals to `kubectl scale --replicas=3 cloneset nginx`.
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### rollout
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Available commands: `history`, `pause`, `restart`, `resume`, `status`, `undo`, `approve`.
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```bash
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$ kubectl kruise rollout undo cloneset/nginx
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# built-in statefulsets
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$ kubectl kruise rollout status statefulsets/sts1
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# kruise statefulsets
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$ kubectl kruise rollout status statefulsets.apps.kruise.io/sts2
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# approve a kruise rollout resource named "rollout-demo" in "ns-demo" namespace
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$ kubectl-kruise rollout approve rollout-demo -n ns-demo`
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```
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### set
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Available commands: `env`, `image`, `resources`, `selector`, `serviceaccount`, `subject`.
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```bash
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$ kubectl kruise set env cloneset/nginx STORAGE_DIR=/local
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$ kubectl kruise set image cloneset/nginx busybox=busybox nginx=nginx:1.9.1
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```
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### migrate
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Currently it supports migrate from Deployment to CloneSet.
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```bash
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# Create an empty CloneSet from an existing Deployment.
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$ kubectl kruise migrate CloneSet --from Deployment -n default --dst-name deployment-name --create
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# Create a same replicas CloneSet from an existing Deployment.
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$ kubectl kruise migrate CloneSet --from Deployment -n default --dst-name deployment-name --create --copy
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# Migrate replicas from an existing Deployment to an existing CloneSet.
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$ kubectl-kruise migrate CloneSet --from Deployment -n default --src-name cloneset-name --dst-name deployment-name --replicas 10 --max-surge=2
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```
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### scaledown
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Scaledown a cloneset with selective Pods.
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```bash
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# Scale down 2 with selective pods
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$ kubectl kruise scaledown cloneset/nginx --pods pod-a,pod-b
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```
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It will decrease **replicas=replicas-2** of this cloneset and delete the specified pods.
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### exec
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Exec working sidecar container of pod when sidecarset is hot-upgrade.
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```bash
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# Get output from running 'date' command in working sidecar container from pod mypod
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kubectl kruise exec mypod -S sidecar-container -- date
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# Switch to raw terminal mode, sends stdin to 'bash' in working sidecar container from cloneset myclone
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# and sends stdout/stderr from 'bash' back to the client
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kubectl kruise exec clone/myclone -S sidecar-container -it -- bash
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```
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### TODO
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#### kubectl kruise migrate
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* [x] migrate [options]
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> kubectl-kruise migrate demo
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```bash
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kubectl kruise migrate CloneSet --from Deployment --src-name deployment-demo --dst-name cloneset-demo --create --copy
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```
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#### kubectl kruise rollout for CloneSet workload
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* [x] undo
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* [x] history
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* [x] status
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* [x] pause
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* [x] resume
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* [x] restart
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#### kubectl kruise rollout for Advanced StatefulSet
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* [x] undo
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* [x] history
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* [x] status
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* [x] restart
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#### kubectl kruise expose for CloneSet workload
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* [x] kubectl kruise expose cloneset demo-clone --port=80 --target-port=8000
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#### kubectl kruise set SUBCOMMAND [options] for CloneSet
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* [x] kubectl kruise set image cloneset/abc
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* [x] kubectl kruise set env cloneset/abc
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* [x] kubectl kruise set serviceaccount cloneset/abc
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* [x] kubectl kruise set resources cloneset/abc
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#### kubectl kruise set SUBCOMMAND [options] for Advanced StatefulSet
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* [x] kubectl kruise set image asts/abc
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* [x] kubectl kruise set env asts/abc
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* [x] kubectl kruise set serviceaccount asts/abc
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* [x] kubectl kruise set resources asts/abc
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#### kubectl kruise autoscale SUBCOMMAND [options]
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* [ ] kubectl kruise autoscale
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### Contributing
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We encourage you to help out by reporting issues, improving documentation, fixing bugs, or adding new features.
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