Question: Is there a way (plugin or tool) to export the data from the database (or database itself) ? I'm looking for this feature as I need to migrate a DB from present host to another one.

Answer: 
From `1.5` onwards, the InfluxDB OSS backup utility provides a newer option which is much more convenient:

`-portable`: Generates backup files in the newer InfluxDB Enterprise-compatible format. Highly recommended for all InfluxDB OSS users

> 
> Export
> 
> 
> 

To back up everything:

```
influxd backup -portable <path-to-backup>

```

To backup only the myperf database:

```
influxd backup -portable -database myperf <path-to-backup>

```

> 
> Import
> 
> 
> 

To restore all databases found within the backup directory:

```
influxd restore -portable <path-to-backup>

```

To restore only the myperf database (myperf database must not exist):

```
influxd restore -portable -db myperf <path-to-backup>

```

Additional options include specifying `timestamp` , `shard` etc. See all the other supported options [here](https://docs.influxdata.com/influxdb/v1.7/administration/backup_and_restore/).
If You want to export in an readable format, the inspect command is to prefer.
To export the database with the name HomeData the command is:

```
sudo influx_inspect export -waldir /var/lib/influxdb/wal -datadir /var/lib/influxdb -out "influx_backup.db" -database HomeData

```

The parameters for -waldir and -datdir can be found in /etc/influxdb/influxdb.conf.

To import this file again, the command is:

```
influx -import -path=influx_backup.db

```