Stopping the Neo4j docker image in order to restore from a backup
neo4j docker installation, the
neo4j-admin restore requires the neo4j service to be stopped as one can’t do a restore on a running database. Subsequently, running as a docker image, stopping neo4j server could be done using a
Ctrl-C (from within the docker terminal) or
docker stop <container id> from a separate terminal window. However, it would terminate the container itself as the container is simply an instance of the neo4j application. In such case, a restore using
./neo4j-admin restore would not be a workable option.
Following is a workaround to doing a
neo4-admin restore in docker:
Get the container name by executing
Backup neo4j by executing
docker exec --interactive --tty <container id> bin/neo4j-admin backupreplacing <container id> with the id fetched as above.
Prior to restore, the neo4j instance needs to be stopped. If executing from the same terminal as the docker process, use
Ctrl-Cwhich will stop the neo4j docker container process. Else, if neo4j container was created indicating --dettach, then
Ctrl-Cwon’t work and one would need to stop the container via a docker cmd from a separate terminal. To do this from a separate terminal, execute
docker stop <container id>
Replace the graph.db folder with that from the backup created earlier.
Start container and it should come up with the restored db.
$ docker run \ --publish=7474:7474 --publish=7687:7687 \ --volume=$HOME/neo4j/data:/data \ --volume=$HOME/neo4j/logs:/logs \ neo4j:3.3.0
Alternatively, one can specify
--dbms.active_database=new.db as a startup option as
$ docker run \ --publish=7474:7474 --publish=7687:7687 \ --volume=$HOME/neo4j/data:/data \ --volume=$HOME/neo4j/logs:/logs \ --dbms.active_database=new.db neo4j:3.3.0`
Following are a few items noticed as part of the testing:
At the time of writing this KB, neo4j Community Edition doesn’t support online backups. Enterprise version can be installed using
--neo4j:3.3.0-enterpriseinstead of the
--neo4j:3.3.0(which by default will install Community edition.
For a docker setup, the /data, /conf and /logs directories specified at the container spin-up, are persistent to disk. Replacing graph.db on a running instance will continue showing the un-restored version of the database, unless the neo4j instance is restarted.
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