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    • Stingray Service Gateway - Traffic Management and Analysis SystemStingray Service Gateway by VAS ExpertsSSG componentsFastDPI (DPI, BNG, NAT functions)AdministrationDatabase administration

    Database administration

    UDR (built-in database, user data repository) is used for permanent storage of data on services and policing settings for the subscribers.

    List of database tables

    Table Purpose
    bindings login and address binding
    bindings_multi login and address binding for multu-subscribers (with several IPs)
    policing Subscriber policing setting
    profile_names Names of profiles
    profiles Profiles of services and policing
    services Subscriber services setting
    vchannel_policing Channel policing setting
    ip_props BRAS subscriber properties

    Activating the built-in database

    UDR activation is required to support dynamic IPs and subscribers with several IPs.

    UDR is activated by the configuration parameter in /etc/dpi/fastdpi.conf file. 

    udr=1

    The created database is located in the /var/db/dpi directory

    You can make a copy of the database without stopping the DPI with a backup command 
    mdb_copy/var/db/dpi./DB

    and handle further manipulations in the copied database.

    Enlarging the DB

    By default, the database size is limited to 1GB. If you have more than 1 million policing profiles, you will need to increase the default size: 

    udr_size=2147483648

    will set the DB size of 2GB.

    The built-in database does not require administration and is fault tolerant. However, in rare cases, damage to the embedded database occurred. In this case, one of the following options is possible.

    Database recovery with data transfer

    Stop the fastDPI 

    service fastdpi stop

    Run the script 

    rm -rf /var/db/dpi.recover/*
mkdir -p /var/db/dpi.recover/tmp
for table in $(mdb_dump -l /var/db/dpi); do
mdb_dump -f /var/db/dpi.recover/tmp/dump.$table.load -s $table /var/db/dpi
mdb_load -f /var/db/dpi.recover/tmp/dump.$table.load /var/db/dpi.recover
done
rm /var/db/dpi/lock.mdb
mv /var/db/dpi/data.mdb /var/db/dpi.recover/data.mdb.backup
cp -f /var/db/dpi.recover/data.mdb /var/db/dpi/

    Start the fastDPI 

    service fastdpi start

    Deleting a database and reloading data back from an external source (billing, etc.)

    Stop the fastDPI 

    service fastdpi stop

    Delete the DB 

    /bin/rm /var/db/dpi/*

    Start the fastDPI 

    service fastdpi start

    Reload all the settings into the database using own scripts.

    Experimental Section

    Restoring a database to the fdpi_ctrl command format

    Stop the fastDPI 

    service fastdpi stop

    Run the script 

    mdb_dump -p -a -f dump.sh /var/db/dpi
/bin/rm /var/db/dpi/*

    Start the fastDPI 

    service fastdpi start

    Run the script 

    chmod +x dump.sh
./dump.sh

    Restoring certain tables to the fdpi_ctrl command format

    Stop the fastDPI 

    service fastdpi stop

    Run the script 

    for table in $(mdb_dump -l /var/db/dpi); do
mdb_dump -p -f dump.$table.sh -s $table /var/db/dpi
done
/bin/rm /var/db/dpi/*

    Start the fastDPI 

    service fastdpi start

    Choose and run the scripts you need, for example 

    chmod +x dump.bindings.sh
./dump.bindings.sh