This section explains registration of the error page response file necessary when using an HTTP error message response as an optional function of server failure monitoring of the server load balancer function.
The tenant user creates the error message file based on the business system to configure, and the infrastructure administrator registers this file in the NS Appliance.
Figure C.4 Registration Flow of Error Page Files
Registration of Error Page Files
Connect to the NS Appliance and store the error page file on the NS appliance.
Store the error page file of the NS appliance by transferring it to the NS appliance
Store the error page file on the FTP server beforehand.
Execute the following command:
copy src_uri [ username name [ password password ] ] [ dst_filename ]
Specify the file on the FTP server as the copy source, in order to copy it to the NS appliance.
ftp://IPv4 address of the FTP server/directory/filename
Specify the login ID for the FTP server using a character string containing between 1 and 64 characters.
Specify the password for the login ID for the FTP server using a character string containing between 1 and 64 characters.
According to the content of the error page response file, specify the following file name:
[Default Error Page Response File]
Specify the file name as "unmslb-default-slb.html".
[The error page response file used when distribution is not possible because all of the distribution target servers are in maintenance mode or in transition to maintenance mode]
Specify the file name as "unm-maintenance-slb.html".
[The error page response file used when distribution is not possible because all of the distribution target servers except the ones in maintenance mode or in transition to maintenance mode have failed]
Specify the file name as "unm-serverstop-slb.html".
[The error page response file used when distribution is not possible due to access limits, although there are distribution target servers which are not in in maintenance mode, not in transition to maintenance mode, have not failed or become overloaded]
Specify the file name as "unm-trafficlimit-slb.html".
Specify the file name as "Arbitrary_name-slb.html".
Information
Create an error page file based on the following points:
Specify a character string containing between 10 and 25 characters, including the extension.
The characters which can be used for the file name are A to Z, a to z, 0 to 9, and !#$%'`()_-~^\{}:+..
The character of the file name is case-sensitive.
Add "-slb.html" to the end of the file name.
Example: error-slb.html
Error page files must be HTML files.
A sample HTML of an error page file is shown below.
<HTML><HEAD><TITLE>Notice</TITLE></HEAD> <BODY> We apologize for any inconvenience. <BR> The server is currently congested, or undergoing periodic maintenance. <BR> For this reason, access is currently not possible. <BR> Sorry, but please wait a while and then try again. <BR> <BR> Periodic maintenance is performed every Monday, from 3:00 am to 5:00 am. <BR> </BODY> </HTML>
When using simple configuration mode, it is recommended to create error page response files using the following sample error page response files.
Default Error Page Response File
unmslb-default-slb.html
The error page response file used when distribution is not possible because all of the distribution target servers are in maintenance mode or in transition to maintenance mode
unm-maintenance-slb.html
The error page response file used when distribution is not possible because all of the distribution target servers except the ones in maintenance mode or in transition to maintenance mode have failed
unm-serverstop-slb.html
The error page response file used when distribution is not possible due to access limits, although there are distribution target servers which are not in in maintenance mode, not in transition to maintenance mode, have not failed or become overloaded
unm-trafficlimit-slb.html
The sample error page response files are registered in the following folder:
[Windows Manager]
Japanese file
Installation_folder\SVROR\Manager\etc\scripts\original\errorpage\ja
English file
Installation_folder\SVROR\Manager\etc\scripts\original\errorpage\en
[Linux Manager]
Japanese file
/etc/opt/FJSVrcvmr/scripts/original/errorpage/ja
English file
/etc/opt/FJSVrcvmr/scripts/original/errorpage/en
About the size of error page response files
For auto-configuration using simple configuration mode
Keep the file size at 250 KB or less.
For auto-configuration using user customization mode
Keep the file size at 1 MB or less.
Keep the total size of all of the error page response files registered with an NS Appliance at 50 MB or less.
