ddclient hangs, can't kill

Ian_Hawdon · 04-17-2007, 01:43 PM

Hello, i use ddclient on my server to update a dynamic IP address. Sadly as my internet goes down often, ddclient is a vital part of my system.

ddclient can work for days updating my IP addresses with Dyndns.org and zoneedit.com

but sumtimes it just halts and wont update, even "killall ddclient" cant stop it

when i type "ps aux | grep ddclient" i get the following:

Code:

root   953  0.0  3.5  5652 4488 ?   S Apr16  0:17 ddclient - reading from members.dyndns.org port 80

The only way to get things working again is to log in via SSH and reboot.

Has anyone had this problem before, and if so, how can it be fixed?

I am using ddclient 3.7.1 and Slackware 10.2

tronayne · 04-18-2007, 07:41 AM

Have you tried, logged in as root, kill -9 PID (which will kill anything, usually)?

I have ddclient running (Slackware 11.0), and have not experienced what you describe; my internet connection does go away every so often, but not too or for long. Just for drill, though, does your rc.ddclient look something like this:

Code:

#!/bin/sh
#
# /etc/rc.d/rc.ddclient
#
# Start/stop/restart the ddclient
#
# To make ddclient start automatically at boot, make this
# file executable:  chmod 755 /etc/rc.d/rc.ddclient
#

case "$1" in
   'start')
      /usr/sbin/ddclient ;;
   'stop')
      kill `cat /var/run/ddclient.pid` ;;
   'restart')
      kill `cat /var/run/ddclient.pid`
      /usr/sbin/ddclient ;;
   *)
      echo "usage $0 start|stop|restart" ;;
esac

Have you tried different configurations in ddclient.conf (who knows if that has anything to do with anything but...).

Ian_Hawdon · 04-18-2007, 12:42 PM

ok:

Code:

root@server:/home/ian# kill -9 PID
bash: kill: PID: arguments must be process or job IDs

This is my custom made rc.ddclient file:

Code:

root@server:/etc/rc.d# vi rc.ddclient 
skipping 13 old session files
reading rc.ddclient

#!/bin/sh
#Start/stop/restart ddclient
#rc.ddclient by OP-EZY
#

ddclient_start() {
  if [ ! -r /etc/ddclient/ddclient.conf ]; then
    echo "/etc/ddclient.conf not found! Please, check configuration."
  fi
  if [ -r /etc/ddclient/ddclient.conf ]; then
    echo "Start ddclient..."
    /usr/sbin/ddclient
  fi
}

ddclient_stop() {
  killall ddclient
}

ddclient_restart() {
  ddclient_stop
  sleep 1
  ddclient_start
}

case "$1" in
'start')
  ddclient_start
  ;;
'stop')
  ddclient_stop
  ;;
'restart')
  ddclient_restart
  ;;
*)
  echo "usage $0 start|stop|restart"
esac
~                                                                                     
~

Should i use the one posted above?

almatic · 04-18-2007, 01:06 PM

instead 'killall ddclient' you could use this to be on the safe side.

kill -9 $(ps -A | grep ddclient | awk {'print $1'})

Ian_Hawdon · 04-18-2007, 02:11 PM

Quote:

Originally Posted by almatic

instead 'killall ddclient' you could use this to be on the safe side.

kill -9 $(ps -A | grep ddclient | awk {'print $1'})

Don't know if this has anything to do with anything, but if i "killall ddclient" when things are working, then it kills no problem.

I had the same problem with ddclient 3.6.3 as well, should i post my ddclient.conf file here too (obv. without my passwords!)

tronayne · 04-18-2007, 04:06 PM

Uh, "kill -9 PID" means the process identification number where

Code:

ps -A | grep ddclient | awk '{ print $1 }'

gives you that number (this is used in what's called a "sideways pipe" below).

All put together,

Code:

kill -9 $(ps -A | grep ddclient | awk '{ print $1 }')

executes the sideways pipe before executing the kill -9 part.

Thing is, kill -9 is a "sure kill" is is preferable to "killall" or some other form.

Note that ddclient stores the PID in a file (see the rc.ddclient provided above) so that the kill just reads the PID from the file in the sideways pipe (it's kill `cat /var/run/ddclient.pid` above).

The important thing is to have the PID available to kill the process; note that if you double start ddclient, you'll have more than one PID to kill...

Ian_Hawdon · 04-19-2007, 04:50 PM

ok, the "kill -9 $(ps -A | grep ddclient | awk '{ print $1 }')" command worked a treat, but is there any way to stop it hanging there in the first place?

here is my ddclient.conf file (without passwords!)

Code:

######################################################################
##
## $Id: sample-etc_ddclient.conf 2 2006-05-22 19:37:19Z wimpunk $
##
## Define default global variables with lines like:
##      var=value [, var=value]*
## These values will be used for each following host unless overridden
## with a local variable definition.
##
## Define local variables for one or more hosts with:
##      var=value [, var=value]* host.and.domain[,host2.and.domain...]
##
## Lines can be continued on the following line by ending the line
## with a \
##
##
## Warning: not all supported routers or dynamic DNS services
##          are mentioned here.
##
######################################################################
daemon=300                              # check every 300 seconds
syslog=yes                              # log update msgs to syslog
mail=root                               # mail all msgs to root
mail-failure=root                       # mail failed update msgs to root
pid=/var/run/ddclient.pid               # record PID in file.
#ssl=yes                                        # use ssl-support.  Works with
                                        # ssl-library
#
#use=watchguard-soho,        fw=192.168.111.1:80        # via Watchguard's SOHO
FW
#use=netopia-r910,           fw=192.168.111.1:80        # via Netopia R910 FW
#use=smc-barricade,          fw=192.168.123.254:80      # via SMC's Barricade FW
#use=netgear-rt3xx,          fw=192.168.0.1:80          # via Netgear's internet
 FW
#use=linksys-wrt854g,         fw=192.168.1.1:80         # via Linksys's internet
 FW
#use=maxgate-ugate3x00,      fw=192.168.0.1:80          # via MaxGate's UGATE-3x
00  FW
#use=elsa-lancom-dsl10,      fw=10.0.0.254:80           # via ELSA LanCom DSL/10
 DSL Router
#use=elsa-lancom-dsl10-ch01, fw=10.0.0.254:80           # via ELSA LanCom DSL/10
 DSL Router
#use=elsa-lancom-dsl10-ch02, fw=10.0.0.254:80           # via ELSA LanCom DSL/10
 DSL Router
#use=alcatel-stp,            fw=10.0.0.138:80           # via Alcatel Speed Touc
h Pro
#use=xsense-aero,            fw=192.168.1.1:80          # via Xsense Aero Router
#use=allnet-1298,            fw=192.168.1.1:80          # via AllNet 1298 DSL Ro
uter
#use=3com-oc-remote812,      fw=192.168.0.254:80        # via 3com OfficeConnect
 Remote 812
#use=e-tech,                 fw=192.168.1.1:80          # via E-tech Router
#use=cayman-3220h,           fw=192.168.0.1:1080        # via Cayman 3220-H DSL
Router
#
fw-login=*****,             fw-password=********                # FW login and p
assword
#
## To obtain an IP address from FW status page (using fw-login, fw-password)
use=fw, fw=192.168.1.1/Status_Router.asp, fw-skip='IP Address:' # found after IP
 Address
#
## To obtain an IP address from Web status page (using the proxy if defined)
#use=web, web=checkip.dyndns.org/, web-skip='IP Address' # found after IP Addres
s
#
#use=ip,                     ip=127.0.0.1       # via static IP's
#use=if,                     if=eth0            # via interfaces
#use=web                                        # via web
#
#protocol=dyndns2                               # default protocol
#proxy=fasthttp.sympatico.ca:80                 # default proxy
#server=members.dyndns.org                      # default server
#server=members.dyndns.org:8245                 # default server (bypassing prox
ies)

login=*****                                     # default login
password=********                               # default password
#mx=mx.for.your.host                            # default MX
backupmx=no                             # host is primary MX?
wildcard=no                             # add wildcard CNAME?

##
## dyndns.org dynamic addresses
##
## (supports variables: wildcard,mx,backupmx)
##
server=members.dyndns.org,              \
protocol=dyndns2                        \
<-------MY DOMAINS------->

##
## dyndns.org static addresses
##
## (supports variables: wildcard,mx,backupmx)
##
# static=yes,                           \
# server=members.dyndns.org,            \
# protocol=dyndns2                      \
# your-static-host.dyndns.org

##
##
## dyndns.org custom addresses
##
## (supports variables: wildcard,mx,backupmx)
##
# custom=yes,                           \
# server=members.dyndns.org,            \
# protocol=dyndns2                      \
# your-domain.top-level,your-other-domain.top-level

##
## ZoneEdit (zoneedit.com)
##
server=www.zoneedit.com,                \
protocol=zoneedit1,                     \
login=*********,                          \
password=********                       \
<-------MY DOMAINS------->

##
## EasyDNS (easydns.com)
##
# server=members.easydns.com,           \
# protocol=easydns,                     \
# login=your-easydns-login,             \
# password=your-easydns-password        \
# your.any.domain,your-2nd.any.domain

##
## Hammernode (hn.org) dynamic addresses
##
# server=dup.hn.org,                    \
# protocol=hammernode1,                 \
# login=your-hn-login,                  \
# password=your-hn-password             \
# your-hn-host.hn.org,your-2nd-hn-host.hn.org

##
## dslreports.com dynamic-host monitoring
##
# server=members.dslreports.com         \
# protocol=dslreports1,                 \
# login=dslreports-login,               \
# password=dslreports-password          \
# dslreports-unique-id

##
## OrgDNS.org account-configuration
##
# use=web, web=members.orgdns.org/nic/ip
# server=www.orgdns.org                 \
# protocol=dyndns2                      \
# login=yourLoginName                   \
# password=yourPassword                 \
# yourSubdomain.orgdns.org

##
## dnspark.com
## (supports variables: mx, mxpri)
##
# use=web, web=ipdetect.dnspark.com, web-skip='Current Address:'
# protocol=dnspark,                     \
# server=www.dnspark.com,               \
# your-host.dnspark.com

##
## NameCheap (namecheap.com)
##
# protocol=namecheap,                           \
# server=dynamicdns.park-your-domain.com,       \
# login=my-namecheap.com-login,                 \
# password=my-namecheap.com-password            \