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111 lines
3.5 KiB
111 lines
3.5 KiB
#!/usr/bin/env bash |
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################################################################### |
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#Script Name : k8s-backup.sh |
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#Description : backup k8s resources. |
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#Create Date : 2020-11-19 |
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#Author : lework |
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#Email : lework@yeah.net |
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################################################################### |
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# https://github.com/pieterlange/kube-backup/blob/master/entrypoint.sh |
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[[ -n $DEBUG ]] && set -x || true |
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set -o errtrace # Make sure any error trap is inherited |
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set -o nounset # Disallow expansion of unset variables |
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set -o pipefail # Use last non-zero exit code in a pipeline |
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###################################################################################################### |
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# environment configuration |
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###################################################################################################### |
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NAMESPACE="${NAMESPACE:-all}" |
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RESOURCES="${RESOURCES:-all}" |
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RESOURCES_PATH="/opt/k8s-backup_$(date +%s)" |
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###################################################################################################### |
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# function |
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###################################################################################################### |
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function get::resource() { |
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ns=$1 |
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if [[ "${RESOURCES}" == "all" ]]; then |
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RESOURCES=$(kubectl api-resources --verbs=list --namespaced -o name | grep -v "events.events.k8s.io" | grep -v "events" | sort |uniq) |
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fi |
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for r in ${RESOURCES}; do |
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echo "Resource:" $r |
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for l in $(kubectl -n ${ns} get --ignore-not-found ${r} -o jsonpath="{$.items[*].metadata.name}");do |
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kubectl -n ${ns} get --ignore-not-found ${r} ${l} -o yaml \ |
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| sed -n "/ managedFields:/{p; :a; N; / name: ${l}/!ba; s/.*\\n//}; p" \ |
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| sed -e 's/ uid:.*//g' \ |
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-e 's/ resourceVersion:.*//g' \ |
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-e 's/ selfLink:.*//g' \ |
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-e 's/ creationTimestamp:.*//g' \ |
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-e 's/ managedFields:.*//g' \ |
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-e '/^\s*$/d' > "$RESOURCES_PATH/${n}/${l}.${r}.yaml" |
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done |
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done |
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} |
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function get::namespace() { |
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if [[ "${RESOURCES}" == "all" ]]; then |
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NAMESPACE=$(kubectl get ns -o jsonpath="{$.items[*].metadata.name}") |
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fi |
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for n in ${NAMESPACE};do |
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echo "Namespace:" $n |
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[ -d "$RESOURCES_PATH/$n" ] || mkdir -p "$RESOURCES_PATH/$n" |
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kubectl get ns ${n} --ignore-not-found -o yaml \ |
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| sed -n "/ managedFields:/{p; :a; N; / name: ${n}/!ba; s/.*\\n//}; p" \ |
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| sed -e 's/ uid:.*//g' \ |
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-e 's/ resourceVersion:.*//g' \ |
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-e 's/ selfLink:.*//g' \ |
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-e 's/ creationTimestamp:.*//g' \ |
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-e 's/ managedFields:.*//g' \ |
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-e '/^\s*$/d' > "$RESOURCES_PATH/${n}/namespace.yaml" |
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get::resource $n |
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done |
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} |
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function help::usage { |
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# 使用帮助 |
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cat << EOF |
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backup k8s resource. |
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Usage: |
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$(basename $0) [flag] |
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Flag: |
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-ns,--namespace namespace, default: all |
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-r,--resource resource, default: all |
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-h,--help help info. |
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EOF |
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exit 1 |
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} |
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###################################################################################################### |
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# main |
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###################################################################################################### |
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while [ "${1:-}" != "" ]; do |
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case $1 in |
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-ns | --namespace ) shift |
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NAMESPACE=${1:-$NAMESPACE} |
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;; |
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-r | --resource ) shift |
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RESOURCES=${1:-$RESOURCES} |
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;; |
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-h | --help ) help::usage |
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;; |
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* ) help::usage |
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esac |
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shift |
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done |
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get::namespace |
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echo "File: ${RESOURCES_PATH}"
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