penctl

Langue: en

Autres versions - même langue

Version: 264932 (debian - 07/07/09)

Section: 1 (Commandes utilisateur)

Sommaire

NAME

penctl - control a running pen load balancer

SYNOPSIS

penctl host:port command

EXAMPLE

penctl lbhost:8888 roundrobin

Turns off client tracking on the load balancer running on lbhost.

DESCRIPTION

Penctl connects to the optional control socket on a pen load balancer. It reads commands from the command line, performs minimal syntax checking and sends them to pen. Replies, if any, are printed on stdout.

The program can also be used through the cgi script penctl.cgi, which allows pen to be controlled from any web browser.

OPTIONS

host:port
Specifies a control port where the load balancer listens for commands.

COMMANDS

acl N permit|deny sourceip [mask]
Adds an entry to access list N, where N is a number from 0 to 9. The source and mask addresses are in the usual dotted quad notation. If mask is omitted, it defaults to 255.255.255.255.
no acl N
Deletes all entries from access list N. The resulting access list permits all traffic.
ascii
Communication dumps in ascii format (cf option -a).
no ascii
Communication dumps in hex format.
blacklist
Return current blacklist time in seconds.
blacklist T
Set the blacklist time in seconds.
block
Do not make sockets nonblocking.
no block
Make sockets nonblocking.
client_acl N
Check connecting clients against access list N (default 0).
clients_max
Return max number of clients.
conn_max
Return max number of simultaneous connections.
control
Return address and port where pen listens for control connections.
control_acl
Check accesses to the control port against access list N (default 0).
debug
Return current debug level.
debug N
Set debug level to N.
delayed_forward
Always wait for the next round of the main loop before forwarding data. Normally pen tries to do that immediately.
no delayed_forward
Try to forward data immediately, to avoid the overhead of copying it to a temporary buffer and waiting for the next main loop round.
exit
Exit. Only available if pen was started with the -X option.
hash
Use a hash on the client IP address for initial server selection.
no hash
Do not use a hash.
http
Add X-Forwarded-For headers to http requests.
no http
Do not add X-Forwarded-For headers.
include FILE
Read commands from file.
listen
Return local address and port pen listens to for incoming client connections.
log
Show where pen is logging, if anywhere.
log FILE
Log to FILE.
mode
Write a summary of the current mode of operation. The listed modes are block, delayed_forward, hash, roundrobin, stubborn.
no log
Turn off logging.
pid
Return the process id of the running daemon
prio
Use the priority based algorithm.
no prio
Do not use the priority based algorithm.
recent [N]
Shows which clients have connected in the last N seconds (default 300).
roundrobin
Use round-robin server selection without client tracking
no roundrobin
server N [ acl A | address A | port P | max M | hard H | blacklist T | weight W | prio P ]
Change acl, address, port, weight, priority and/or max connections for server N, or blacklist it for T seconds.
servers
List address, port, weight, priority and max number of simultaneous connections for each remote server.
status
Print status information in html format.
stubborn
If the initial server selection is unavailable, close the client connection without trying another
no stubborn
timeout
Return current connect timeout in seconds.
timeout N
Set connect timeout to N seconds.
tracking N
Set tracking time, i.e. how long clients will be remembered. The default 0 will never expire clients based on time.
web_stats
Return file name of html status reports, if any.
web_stats FILE
Set the name of html status reports.
no web_stats
Do not generate html status reports.
weight
Use weight for server selection.
no weight
Do not use weight for server selection.
write [FILE]
Write the current configuration into a file which can be used to start pen. If FILE is omitted, the configuration is written into pen's original configuration file.

SEE ALSO

pen(1)

AUTHOR

Copyright (C) 2002-2008 Ulric Eriksson, <ulric@siag.nu>.