TMG:Automatic Text CDR Retrieval

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This procedure shows how to configure a Tmedia to send its CDR files to a remote server automatically and perform daily (or monthly) file archives.

Contents

Overview

The tbcopycdr script support the following features:

  • Move cdr files from TMG_CDR_DIR to TMG_TEMP_DIR
  • Send files to remote server
  • Move sucessfully sent files (rename to .sent.gz) from TMG_TEMP_DIR to TMG_ARCHIVE_DIR (ARCHIVE=true)
  • Rename sucessfully sent files (.sent.gz) in TMG_TEMP_DIR (ARCHIVE=false; ERASE_AFTER_SEND=false)
  • Delete sucessfully sent files from TMG_TEMP_DIR (ARCHIVE=false; ERASE_AFTER_SEND=true)
  • If a file failed to be sent to remote server, it is kept in TMG_TEMP_DIR until it is successfully sent


The tbarchivecdr script create a gzip tar archive with all gz files copied by tbcopycdr in TMG_ARCHIVE_DIR

  • Change directory to TMG_ARCHIVE_DIR
  • Create a temporary folder with the current date (ie. 2016-01-30)
  • Sleep for 90 second
  • Move all *.gz files and $TMG_TEMP_DIR/$LOG_FILE to this folder
  • Archive the folder in a gzipped tar file (cdr_2016_01_30_$hostname.tgz)

Install

Installation with access to internet

The tbcopycdr and tbarchivecdr scripts are included in the tb_tools packages 1.2-32.el7 (CentOS7) and 1.2-32.el5 (CentOS5). 

yum install tb_tools
yum list tb_tools
  tb_tools.noarch        1.2-32.el7.tb

Offline Install

If you don't have direct access to the repository from the Tmedia, you can manually install the package on your Tmedia.

1. Get the tb_tools rpm package from the repository.


2. Copy the rpm package to the Tmedia (using a sftp client) and install:

  • CentOS 7: 
yum --nogpgcheck localinstall tb_tools-1.2-32.el7.tb.noarch.rpm
  • CentOS 5: 
yum --nogpgcheck localinstall tb_tools-1.2-32.el5.noarch.rpm

Configuration

The script is configured with user variables.

  • CONFIG_FILE: Configuration file name and location. By default, it is set to /root/tbcopycdr.cfg 
CONFIG_FILE=/root/tbcopycdr.cfg

tbcopycdr.cfg file example: 

TMG_TEMP_DIR=/home/tbcopycdr
TMG_CDR_DIR=/lib/tb/toolpack/setup/12358/cdr_logs
ARCHIVE=true
TMG_ARCHIVE_DIR=/lib/tb/toolpack/setup/12358/cdr_archive
ARCHIVE_MAX_DAYS=180
REMOTE_HOST=192.168.101.170
REMOTE_PORT=22
REMOTE_DIR=/root/cdr_backups
REMOTE_USER=root

The configuration file can redefine any of the following user variables. To see the default variables: 

head -n 50 /usr/bin/tbcopycdr
  • TMG_CDR_DIR: Tmedia directory where the CDR are located. Default is /lib/tb/toolpack/setup/12358/cdr_logs 
TMG_CDR_DIR=/lib/tb/toolpack/setup/12358/cdr_logs
  • REMOTE_HOST : Remote hostname or Ip address. Remote host copy is disabled by default. 
REMOTE_HOST=10.10.10.10
  • REMOTE_PORT : Remote host ssh port. 
REMOTE_PORT=22
  • REMOTE_DIR : Remote directory where to copy the backup files (/root/backup by default) 
REMOTE_DIR=/root/backup
  • REMOTE_USER : Remote host login user. 
REMOTE_USER=root
  • CONNECT_TIMEOUT : scp connection timeout 
CONNECT_TIMEOUT=10
  • ARCHIVE: true or false. If set to true, move sucessfully sent files (rename to .sent.gz) from TMG_TEMP_DIR to TMG_ARCHIVE_DIR. Default is false. 
ARCHIVE=false
  • TMG_ARCHIVE_DIR: Directory where the cdrs are moved if ARCHIVE=true 
TMG_ARCHIVE_DIR=/lib/tb/toolpack/setup/12358/cdr_archive
  • ARCHIVE_MAX_DAYS: Define how many days archive file (.tgz) should be kept in TMG_ARCHIVE_DIR. This user variable is used by tbarchivecdr only. 
# Assign no value to disable
ARCHIVE_MAX_DAYS=
  • ERASE_AFTER_SEND: Take effect only if ARCHIVE is false. If ERASE_AFTER_SEND is true, erase file from TMG_TEMP_DIR, else, rename and keep files in working directory. 
ERASE_AFTER_SEND=false

Note: if you set ERASE_AFTER_SEND to false the CDR text file will be available in the /home/telcobridges/cdr/ directory and rename *.gz.already_send.

Remote Server Copy

You must create an SSH key pair and copy it to the remote server, if the remote server copy is configured. This will enable the Tmedia to copy the backup files to the remote host without asking for a password:

  • Connect to the Tmedia using SSH as root
  • Create Tmedia public/private dsa key pair 
ssh-keygen -t rsa

Note: Do not add a pass phrase, simply press enter until the key pair is generate.

  • Append the content of the public key to the remote host authorized keys

Tmedia public key location 

/root/.ssh/id_rsa.pub

Remote Host authorized keys location 

~/.ssh/authorized_keys

More details here: Password-less SSH

Troubleshooting

Test

  • Run the tbcopycdr script with the -v option 
tbcopycdr -v

If no error were seen on the shell, your configuration is correct. Also, you should have a hello_world.log file on the remote host.

Log File

Transfer results are written in $TMG_TEMP_DIR/$LOG_FILE

Schedule the Scripts

  • Create a new crontab on the Tmedia 
crontab -e
  • Add new line with the cron configuration

tbcopycdr:

Frequency Cron Configuration
Every 10 minutes */10 * * * * /usr/bin/tbcopycdr > /dev/null 2>&1
hourly (top of the hour) 0 * * * * /usr/bin/tbcopycdr > /dev/null 2>&1
daily (midnight) 0 0 * * * /usr/bin/tbcopycdr > /dev/null 2>&1

tbarchivecdr:

Frequency Cron Configuration
daily@23h59 59 23 * * * /usr/bin/tbarchivecdr > /dev/null 2>&1
weekly (sunday@23h59) 59 23 * 7 * /usr/bin/tbarchivecdr > /dev/null 2>&1

Cron table example for a cdr copy to an external server every 10 minutes with a daily archive of all the transmitted files: 

*/10 * * * * /usr/bin/tbcopycdr > /dev/null 2>&1
59 23 * * * /usr/bin/tbarchivecdr > /dev/null 2>&1
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