RedHat Linux 5 NetBackup client backups fail with a NetBackup Status Code 57 (client connection refused).

Article:TECH57385  |  Created: 2009-01-12  |  Updated: 2010-09-07  |  Article URL http://www.symantec.com/docs/TECH57385
Article Type
Technical Solution


Environment

Subject

Issue



RedHat Linux 5 NetBackup client backups fail with a NetBackup Status Code 57 (client connection refused).


Error



client connection refused


Solution



If the above error is encountered on backups attempted after initial client installation, a possible cause is that xinetd, the extended Internet services daemon, is not running.  xinetd is provided by the Linux operating system and acts as a listener for network applications like ftp and telnet.  In the case of NetBackup it is listening for incoming connections to bpcd and vnetd.

Run the following Linux RedHat command to verify that the xinetd package is installed:

rpm -qa | grep xinetd

If installed the output will look similar to:

xinetd-2.3.13-4.4E.1

If there is no output generated the xinetd package needs to be obtained from RedHat and installed on this client.

If the xinetd package is installed and the client is failing with a NetBackup Status Code 57 (client connection refused), check that xinetd is running by executing the following command:

ps -ef | grep xinetd

If running, the output looks similar to:

root      5040     1  0 11:41 ?        00:00:00 xinetd -stayalive -pidfile /var/run/xinetd.pid

If xinetd is installed and not running, the Redhat operating system will need to be configured so that xinetd is started each time the system boots.

Once xinetd is installed and running, the following commands can be used to verify that vnetd and bpcd are listening:

netstat -a | grep bpcd
netstat -a | grep vnetd

The output from these commands should show the following outputs, respectively:

# netstat -a | grep bpcd
tcp        0      0 *:bpcd                      *:*                         LISTEN
# netstat -a | grep vnetd
tcp        0      0 *:vnetd                     *:*                         LISTEN

If bpcd and vnetd are in a listen state and backups continue to fail, additional troubleshooting needs to be performed and may require contacting NetBackup support.  

Additional items to check:

Run the following command to verify the correct client binaries are installed:

cat /usr/openv/netbackup/bin/version

Compare the output from this command to the required NetBackup client binaries as indicated in VERITAS 6.x NetBackup (tm) Operating System Compatibility List (refer to the related documents below).

Run the following command to determine if iptables firewall rules might be blocking connectivity:

iptables -vL

 
If firewall rules are being applied the following document can be used to determine ports required for connectivity to a NetBackup client: VERITAS NetBackup (tm) 6.0 Port Usage Guide for Windows and UNIX Platforms  (refer to the related documents below).  For assistance with configuring iptables refer to RedHat documentation or contact RedHat support.
 

 

Supplemental Materials

Value57
Description

client connection refused



Legacy ID



297459


Article URL http://www.symantec.com/docs/TECH57385


Terms of use for this information are found in Legal Notices