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policy-etcd-backup.yaml
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policy-etcd-backup.yaml
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apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
name: policy-etcd-backup
annotations:
policy.open-cluster-management.io/categories: NIST SP 800-53
policy.open-cluster-management.io/controls: CM Configuration Management
policy.open-cluster-management.io/standards: CM-2 Baseline Configuration
spec:
disabled: false
policy-templates:
- objectDefinition:
apiVersion: policy.open-cluster-management.io/v1
kind: ConfigurationPolicy
metadata:
name: policy-etcd-backup
spec:
namespaceSelector:
include:
- default
object-templates:
- complianceType: musthave
objectDefinition:
apiVersion: v1
kind: ServiceAccount
metadata:
name: approver
- complianceType: musthave
objectDefinition:
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: cluster-admin-approver-sa-crb
roleRef:
name: cluster-admin
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
subjects:
- name: approver
kind: ServiceAccount
- complianceType: musthave
objectDefinition:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: etcd-backup
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 20Gi
- complianceType: musthave
objectDefinition:
apiVersion: v1
data:
etcd-backup.sh: |+
DATE=$(date +%Y%m%dT%H%M%S)
/usr/local/bin/etcd-snapshot-backup-disconnected.sh /assets/backup
if [ $? -eq 0 ]; then
mkdir /etcd-backup/${DATE}
cp -r /assets/backup/* /etcd-backup/${DATE}/
echo 'Copied backup files to PVC mount point.'
exit 0
fi
echo "Backup attempts failed. Please FIX !!!"
exit 1
etcd-snapshot-backup-disconnected.sh: |+
set -o errexit
set -o pipefail
set -o errtrace
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root"
exit 1
fi
function usage {
echo 'Path to backup dir required: ./cluster-backup.sh <path-to-backup-dir>'
exit 1
}
if [ -z "$1" ] || [ -f "$1" ]; then
usage
fi
if [ ! -d "$1" ]; then
mkdir -p $1
fi
function backup_latest_kube_static_resources {
RESOURCES=("$@")
LATEST_RESOURCE_DIRS=()
for RESOURCE in "${RESOURCES[@]}"; do
LATEST_RESOURCE=$(ls -trd "${CONFIG_FILE_DIR}"/static-pod-resources/${RESOURCE}-[0-9]* | tail -1) || true
if [ -z "$LATEST_RESOURCE" ]; then
echo "error finding static-pod-resource ${RESOURCE}"
exit 1
fi
echo "found latest ${RESOURCE}: ${LATEST_RESOURCE}"
LATEST_RESOURCE_DIRS+=("${LATEST_RESOURCE#${CONFIG_FILE_DIR}/}")
done
tar -cpzf $BACKUP_TAR_FILE -C ${CONFIG_FILE_DIR} "${LATEST_RESOURCE_DIRS[@]}"
}
BACKUP_DIR="$1"
DATESTRING=$(date "+%F_%H%M%S")
BACKUP_TAR_FILE=${BACKUP_DIR}/static_kuberesources_${DATESTRING}.tar.gz
SNAPSHOT_FILE="${BACKUP_DIR}/snapshot_${DATESTRING}.db"
BACKUP_RESOURCE_LIST=("kube-apiserver-pod" "kube-controller-manager-pod" "kube-scheduler-pod" "etcd-pod")
trap "rm -f ${BACKUP_TAR_FILE} ${SNAPSHOT_FILE}" ERR
source /etc/kubernetes/static-pod-resources/etcd-certs/configmaps/etcd-scripts/etcd.env
source /etc/kubernetes/static-pod-resources/etcd-certs/configmaps/etcd-scripts/etcd-common-tools
if [ ! -f "$ETCDCTL_CACERT" ] && [ ! -d "${CONFIG_FILE_DIR}/static-pod-certs" ]; then
ln -s ${CONFIG_FILE_DIR}/static-pod-resources/etcd-certs ${CONFIG_FILE_DIR}/static-pod-certs
fi
backup_latest_kube_static_resources "${BACKUP_RESOURCE_LIST[@]}"
etcdctl snapshot save ${SNAPSHOT_FILE}
echo "snapshot db and kube resources are successfully saved to ${BACKUP_DIR}"
kind: ConfigMap
metadata:
name: etcd-backup-script
- complianceType: musthave
objectDefinition:
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: cronjob-etcd-backup
labels:
purpose: etcd-backup
spec:
concurrencyPolicy: Forbid
jobTemplate:
spec:
backoffLimit: 0
template:
spec:
activeDeadlineSeconds: 200
containers:
- name: etcd-backup
command:
- /bin/sh
- "-c"
- >-
/usr/local/bin/etcd-backup.sh && ls -1
/etcd-backup/* | sort -r | tail -n +6 | xargs
rm -rf > /dev/null 2>&1
env: null
image: >-
quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:6a2378154881e6f9a4638f41242518d850e19b0d7d9ef74a2be55b87f4625e87
imagePullPolicy: IfNotPresent
resources:
requests:
cpu: 300m
memory: 250Mi
securityContext:
privileged: true
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: FallbackToLogsOnError
volumeMounts:
- name: certs
mountPath: /etc/ssl/etcd/
- name: conf
mountPath: /etc/etcd/
- name: kubeconfig
mountPath: /etc/kubernetes/
- name: etcd-backup-script
mountPath: /usr/local/bin/etcd-backup.sh
subPath: etcd-backup.sh
- name: etcd-backup-script
mountPath: >-
/usr/local/bin/etcd-snapshot-backup-disconnected.sh
subPath: etcd-snapshot-backup-disconnected.sh
- name: etcd-backup
mountPath: /etcd-backup
- name: scripts
mountPath: /usr/local/bin
hostNetwork: true
nodeSelector:
node-role.kubernetes.io/master: ""
restartPolicy: Never
serviceAccount: approver
serviceAccountName: approver
tolerations:
- effect: NoSchedule
operator: Exists
- effect: NoExecute
operator: Exists
volumes:
- name: certs
hostPath:
path: >-
/etc/kubernetes/static-pod-resources/etcd-member
type: ""
- name: conf
hostPath:
path: /etc/etcd
type: ""
- name: kubeconfig
hostPath:
path: /etc/kubernetes
type: ""
- name: scripts
hostPath:
path: /usr/local/bin
type: ""
- name: etcd-backup
persistentVolumeClaim:
claimName: etcd-backup
- name: etcd-backup-script
configMap:
name: etcd-backup-script
defaultMode: 493
schedule: "0 */6 * * *"
startingDeadlineSeconds: 200
suspend: false
remediationAction: inform
severity: low
remediationAction: inform