Back up OpenSDN data¶

MOSK enables you to perform the automatic OpenSDN data backup using the tf-dbbackup-job cron job. Also, you can configure a remote NFS storage for OpenSDN data backups. For configuration details, refer to the OpenSDN database section in Reference Architecture.

This section provides instructions on how to back up the OpenSDN data manually if needed.

Manually back up OpenSDN data in JSON format¶

Disable the Neutron server that is used by OpenStack to communicate with the OpenSDN API:

Note

The database changes associated with northbound APIs must be stopped on all systems before performing any backup operations.
1. Scale the neutron-server deployment to 0 replicas:
```
kubectl -n openstack scale deploy neutron-server --replicas 0
```
2. Verify the number of replicas:
```
kubectl -n openstack get deploy neutron-server
```
  Example of a positive system response:
```
NAME             READY   UP-TO-DATE   AVAILABLE   AGE
neutron-server   0/0     0            0           6d22h
```

Join the OpenSDN API that is part of the config DaemonSet:

Obtain the tf-config pod:

kubectl -n tf get pod -l tungstenfabric=config

Example of a system response:

NAME              READY   STATUS    RESTARTS   AGE
tf-config-6ppvc   5/5     Running   0         5d4h
tf-config-rgqqq   5/5     Running   0         5d4h
tf-config-sb4kk   5/5     Running   0         5d4h

Join the Bash shell of one of the api container from the previous step:

kubectl -n tf exec -it tf-config-<hash> -c api -- bash

Example of a system response:

(config-api[hostname])[<USER>@<HOSTNAME> /]$

Inside the api container, change the directory to the Python config management packages:
```
cd /usr/lib/python3.6/site-packages/cfgm_common
```

Back up data using db_json_exim in JSON format:

python db_json_exim.py --export-to /tmp/db-dump.json

Verify the created dump:

cat /tmp/db-dump.json | python -m json.tool | less

Copy the backup from the container:

kubectl -n tf cp tf-config-<hash>:/tmp/db-dump.json <DESTINATION-PATH-FOR-BACKUP>

On the same config node, copy the contrail-api.conf file from the container to the host:

kubectl -n tf cp tf-config-<hash>:/etc/contrail/contrail-api.conf <DESTINATION-PATH-FOR-CONF>

Enable the Neutron server:

Scale the neutron-server deployment back to the desired number of replicas. Default is 3.

kubectl -n openstack scale deploy neutron-server --replicas <DESIRED-NUM-REPLICAS>

Verify the number of replicas:

kubectl -n openstack get deploy neutron-server

Example of a system response:

NAME             READY   UP-TO-DATE   AVAILABLE   AGE
neutron-server   3/3     3            3           6d23h

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Back up OpenSDN data¶

Manually back up OpenSDN data in JSON format¶