Fleet
Fleet is a container management and deployment engine designed to offer users more control on the local cluster and constant monitoring through GitOps
Quick start
Getting to know Fleet
- Youtube videos
- GitOps The Planet (E4) - GitOps at Edge - January 4, 2023
- Using Fleet to Manage Clusters at Scale - November 21, 2020
Install Fleet objects in your Kubernetes cluster
# sets version
FLEET_VERSION=0.3.9
# (optional) views objects that will be created
helm template fleet-crd https://github.com/rancher/fleet/releases/download/v${FLEET_VERSION}/fleet-crd-${FLEET_VERSION}.tgz > temp/fleet-crd.yaml
helm template -n cattle-fleet-system fleet https://github.com/rancher/fleet/releases/download/v${FLEET_VERSION}/fleet-${FLEET_VERSION}.tgz > temp/fleet.yaml
# installs
helm -n cattle-fleet-system install --create-namespace --wait fleet-crd https://github.com/rancher/fleet/releases/download/v${FLEET_VERSION}/fleet-crd-${FLEET_VERSION}.tgz
helm -n cattle-fleet-system install --create-namespace --wait fleet https://github.com/rancher/fleet/releases/download/v${FLEET_VERSION}/fleet-${FLEET_VERSION}.tgz
# makes sure all containers are running fine
kubectl get all -n cattle-fleet-system
Use examples repo (or your own) to deploy your first applications
# creates sample namespace
kubectl create namespace fleet-sample
# creates or updates the sample gitrepo
kubectl apply -f samples/gitrepo-guestbook-sample.yaml -n fleet-sample
# views fleet action
kubectl get fleet -n fleet-sample
Configuration
Samples
Alternatives
| Name | Model |
|---|---|
| ArgoCD | Push |
| Fleet | Pull |
| Flux | Pull |
Limitations
Helm chart dependencies
- tgz files in charts folder (coming from
helm dependency update) must be added to git to be picked up by Fleet (see issue #250)
Helm chart with objects on multiple namespaces
- You may encounter the issue
Error while running post render on files: invalid cluster scoped object [name=* kind=PodSecurityPolicy apiVersion=policy/v1beta1] found, consider using "defaultNamespace", not "namespace" in fleet.yaml
Modified GitRepos
Troubleshoot
Fleet Kubernetes objects
| Kind | Name |
|---|---|
| bundles.fleet.cattle.io | CustomResourceDefinition |
| bundledeployments.fleet.cattle.io | CustomResourceDefinition |
| bundlenamespacemappings.fleet.cattle.io | CustomResourceDefinition |
| clustergroups.fleet.cattle.io | CustomResourceDefinition |
| clusters.fleet.cattle.io | CustomResourceDefinition |
| clusterregistrationtokens.fleet.cattle.io | CustomResourceDefinition |
| gitrepos.fleet.cattle.io | CustomResourceDefinition |
| clusterregistrations.fleet.cattle.io | CustomResourceDefinition |
| gitreporestrictions.fleet.cattle.io | CustomResourceDefinition |
| contents.fleet.cattle.io | CustomResourceDefinition |
| imagescans.fleet.cattle.io | CustomResourceDefinition |
| gitjobs.gitjob.cattle.io | CustomResourceDefinition |
| gitjob | ServiceAccount |
| fleet-controller | ServiceAccount |
| fleet-controller-bootstrap | ServiceAccount |
| fleet-controller | ConfigMap |
| gitjob | ClusterRole |
| fleet-controller | ClusterRole |
| fleet-controller-bootstrap | ClusterRole |
| gitjob-binding | ClusterRoleBinding |
| fleet-controller | ClusterRoleBinding |
| fleet-controller-bootstrap | ClusterRoleBinding |
| fleet-controller | Role |
| fleet-controller | RoleBinding |
| gitjob | Service |
| gitjob | Deployment |
| fleet-controller | Deployment |
Git token expired
- If you manage the GitRepo from Rancher UI and create new git credential, save twice the UI