03-02-2010
How to stop monitoring of servers at the time of reboot through shell scripting?
We have number of servers which belongs to platforms Solaris, AIX,HP-UX and LINUX. Monitoring tool 'Patrol Agent' process run on the servers to check for the server health and communicate with the Patrol server through the port 5181. During scheduled reboot and maintenance of servers we do receive alarms/alerts due to the 'Connection Closed' for the nodes. Patrol agent Stop & Start process is automated through shell script during rebooting of the server. Hence we started receiving multiple requests from the users to bring the monitoring of servers into Maintenance mode which is a repeated process and very much time consuming.
So I am just thinking of trying to implement some automation process for keeping the servers in Maintenance mode throughout the time span while server is DOWN. Is there any process that we can implement on the servers through SHELL scripting so that the communication (through the TCP port) between the Patrol Server & Agent can be stopped just before executing the shutdown command and again resuming it as soon as the server is up and running? If so then we can consolidate and execute the new scripts which will stop FALSE alarming .
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LEARN ABOUT DEBIAN
ka-forwarder
KA-FORWARDER(8) AFS Command Reference KA-FORWARDER(8)
NAME
ka-forwarder - Forward AFS Authentication Server requests to another server
SYNOPSIS
ka-forwarder [-p <port>] <server>[/<port>] [...]
DESCRIPTION
ka-forwarder listens for requests for an AFS Authentication Server and forwards them to a remove fakeka server. fakeka is a server that
answers AFS Authentication Server protocol requests using a regular Kerberos KDC and is provided with some Kerberos 5 implementations.
fakeka has to run on the same host as the Kerberos KDC, however, and AFS clients send all native AFS authentication requests to the AFS
database servers. If you don't want to run your Kerberos KDCs and your AFS database servers on the same host, run ka-forwarder on the AFS
database servers and point it to fakeka running on the Kerberos KDCs.
ka-forwarder takes one or more servers to which to forward the requests. The default port on the remote server to which to forward the
command is 7004, but a different port can be specified by following the server name with a slash ("/") and the port number. If multiple
servers are given, ka-forwarder will send queries to each server in turn in a round-robin fashion.
CAUTIONS
Due to the way that ka-forwarder distinguishes from client requests and server responses, any messages from one of the servers to which ka-
forwarder is forwarding will be considered a reply rather than a command and will not be forwarded. This means that the servers running
fakeka will not be able to use native AFS authentication requests and rely on ka-forwarder to send the requests to the right server.
ka-forwarder does not background itself. It should either be run in the background via the shell, or run via the Basic OverSeer Server
(see bosserver(8)).
OPTIONS
-p <port>
By default, ka-forwarder listens to the standard AFS Authentication Server port (7004). To listen to a different port, specify it with
the -p option.
EXAMPLES
Forward AFS Authentication Server requests to the fakeka servers on kdc1.example.com and kdc2.example.com:
% ka-forwarder kdc1.example.com kdc2.example.com &
Note the "&" to tell the shell to run this command in the background.
PRIVILEGE REQUIRED
ka-forwarder only has to listen to port 7004 and therefore does not require any special privileges unless a privileged port is specified
with the -p option.
SEE ALSO
bosserver(8), fakeka(8), kaserver(8)
COPYRIGHT
Copyright 2006 Russ Allbery <rra@stanford.edu>
This documentation is covered by the IBM Public License Version 1.0. This man page was written by Russ Allbery for OpenAFS.
OpenAFS 2012-03-26 KA-FORWARDER(8)