How-To Manual Redis Restore

instanceNamespace='mynamespace'
# get the repository password
export RESTIC_PASSWORD=$(kubectl -n "${instanceNamespace}" get secrets k8up-repository-password -o jsonpath='{.data.password}' | base64 -d)

# get the s3 credentials
export AWS_ACCESS_KEY_ID=$( kubectl -n "${instanceNamespace}" get secrets backup-bucket-credentials -o jsonpath='{.data.AWS_ACCESS_KEY_ID}' | base64 -d)
export AWS_SECRET_ACCESS_KEY=$(kubectl -n "${instanceNamespace}" get secrets backup-bucket-credentials -o jsonpath='{.data.AWS_SECRET_ACCESS_KEY}' | base64 -d)
bucket=$(kubectl -n "${instanceNamespace}" get secrets backup-bucket-credentials -o jsonpath='{.data.BUCKET_NAME}' | base64 -d)
endpoint=$(kubectl -n "${instanceNamespace}" get secrets backup-bucket-credentials -o jsonpath='{.data.ENDPOINT_URL}' | base64 -d)
export RESTIC_REPOSITORY="s3:${endpoint}/${bucket}"

restic snapshots
repository 5a0b7f47 opened (version 2, compression level auto)
created new cache in /Users/simonbeck/Library/Caches/restic
ID        Time                 Host                              Tags        Paths
------------------------------------------------------------------------------------------------------------------------
8699508e  2023-06-16 09:27:08  vshn-redis-redis-app1-prod-x94wt              /vshn-redis-redis-app1-prod-x94wt-redis.tar
------------------------------------------------------------------------------------------------------------------------
1 snapshots

# restore the tar file locally
# take the snapshot ID and the filename from the list above
id=8699508e
filename=/vshn-redis-redis-app1-prod-x94wt-redis.tar
restic dump "${id}" "${filename}" > ~/Desktop/restore.tar

# extract the tar file
cd ~/Desktop
tar xvf restore.tar

# scale down instance
kubectl -n "${instanceNamespace}" scale statefulset redis-master --replicas 0

# create a temp restore pod
cat <<EOF | kubectl apply -f -
apiVersion: batch/v1
kind: Job
metadata:
  name: restic
  namespace: "$instanceNamespace"
  labels:
    run: restic

spec:
  template:
    spec:
      restartPolicy: Never
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: redis-data-redis-master-0
      containers:
        - name: restic
          image: ghcr.io/k8up-io/k8up:master
          command:
            - bash
            - -c
            - |
              rm -rf /data/*
              restic dump "${id}" ${filename} > /data/restore.tar
              cd /data
              tar xvf restore.tar
              mv data/* .
              rmdir data
              rm restore.tar
          env:
            - name: AWS_ACCESS_KEY_ID
              value: "${AWS_ACCESS_KEY_ID}"
            - name: AWS_SECRET_ACCESS_KEY
              value: ${AWS_SECRET_ACCESS_KEY}
            - name: RESTIC_PASSWORD
              value: "${RESTIC_PASSWORD}"
            - name: RESTIC_REPOSITORY
              value: "${RESTIC_REPOSITORY}"
          volumeMounts:
            - name: data
              mountPath: /data
EOF

# Delete the job once it succeeded
kubectl -n "${instanceNamespace}" delete job restic

# Scale instance back up
kubectl -n "${instanceNamespace}" scale statefulset redis-master --replicas 1