# Using dnl\_backup\_tool

## CDR Management

Assuming you are using the default installation path, then you can find the configuration in the following file:

```

/opt/denovo/dnl_backup_tool/conf/dnl_backup_tool.conf
```

The following fields let you configure how many days you want to keep CDRs in local disk.

{% code title=" " %}

```bash
basepath	/opt/denovo/dnl_softswitch/cdr/

# Compress CDR all data older than this value (in days)
# Default: 0 - do not compress .cdr files
keep_cdr	3

# Remove all archives older than this value (in days)
# Default: 0 - do not remove old archives
keep_archives	10


```

{% endcode %}

Within the same config file, you can setup Google cloud storage as follows:

```bash
### Gcloud configuration


# Authentication type (service, oauth2)
# Default: service
gcloud_type		service

# (M) Bucket to use
gcloud_backup_bucket	your_bucket_name

# (M) Authorization methods
#
# Service account:
#   - set gcs_auth_type to SERVICE
#   - provide path to JSON keyfile in *gcs_keyfile_path
#
# OAuth2:
#   - set gcs_auth_type to OAUTH2
#   - specify client email, secret and refresh token 
#
gcloud_key_file		/opt/denovo/dnl_backup_tool/conf/tokyo-bird-344444-7c1c6325c412.json
#gcloud_key_file		/opt/denovo/dnl_backup_tool/conf/ytel-powersips.json
gcloud_email		your_google_cloud_account
gcloud_secret		RkLYIe3k5tfffhJbi96Kut
gcloud_token		1/7jrRTfff7ZFkTp9u4sA1f0595t7__SmLS7oXP
```

If you prefer to use FTP for your cold storage, then you can setup the following parameters:

```bash
### (S)FTP configuration


# (M) Server URL
ftp_url		your_ftp_ip_or_host

# Server port
# Default: 21 - FTP, 22 - SFTP
ftp_port	21

# (M) Path to the CDR directory on the server
ftp_backup_dir	/fto_path/switch1

# Use relative paths in QUOT commands instead of absolute
# Default: false
ftp_use_relative_paths	false

# (M) Authorization methods
#
# FTP:
#   - By login/password pair:
#     set *ftp_user, and *ftp_password if required
#     leave *netrc_path empty
#
#   - Using system settings:
#     provide path to .netrc file in *netrc_path
#
#   - Anonymous:
#     set *ftp_user to "anonymous" and leave *ftp_pass empty
#
# SFTP:
#   - By login/password pair:
#     set *ftp_user and *ftp_pass values
#
#   - Using SSH keys:
#     set *pubkey_path, *privkey_path, and *passphrase if required
#     leave *ftp_user and *ftp_pass empty
#
ftp_user	your_ftp_username
ftp_password	your_ftp_password 


```

After you make changes to this config file, you must restart the switch to make it effective.  Here is the command to restart Class 4 backup tool:

```
systemctl restart dnl_backup_tool
```

When setup correctly, you should see CDRs being pushed to your Google Cloud bucket like below:

![](/files/-MYTRFwJSAEQVDABBlfy)


---

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