k8s-exporter.sh

#!/bin/bash

echo "listing namespaces"

BACKUP_PATH=backup
NAMESPACES=$(kubectl get namespace | awk '{print $1}' | tail -n +2)

# RESOURCES="$(kubectl api-resources \
#                  --namespaced \
#                  --verbs list \
#                  -o name \
#            | tr '\n' ,)"
RESOURCES="configmaps,endpoints,events,limitranges,persistentvolumeclaims,podtemplates,replicationcontrollers,resourcequotas,secrets,serviceaccounts,services,challenges.acme.cert-manager.io,orders.acme.cert-manager.io,controllerrevisions.apps,daemonsets.apps,deployments.apps,replicasets.apps,statefulsets.apps,horizontalpodautoscalers.autoscaling,cronjobs.batch,jobs.batch,certificaterequests.cert-manager.io,certificates.cert-manager.io,issuers.cert-manager.io,leases.coordination.k8s.io,endpointslices.discovery.k8s.io,events.events.k8s.io,ingresses.extensions,pods.metrics.k8s.io,ingresses.networking.k8s.io,networkpolicies.networking.k8s.io,poddisruptionbudgets.policy,rolebindings.rbac.authorization.k8s.io,roles.rbac.authorization.k8s.io,securitygrouppolicies.vpcresources.k8s.aws"


mkdir -p $BACKUP_PATH
rm -f $BACKUP_PATH/*.yml

for ns in $NAMESPACES
do
    of="${BACKUP_PATH}/${ns}.yml"
    echo "exporting namespace ${ns} to file ${of}"
    kubectl get ${RESOURCES} -n ${ns} -o yaml > ${of}
done