resolve bug ?

[Zeev Fisher]

Hi,

First , for some reason resolve doesn't do it's job ( i'm sure i tested 
it before and it worked. something in the configuration files for some 
reason confuse him.. )

I've added for test some garbage on resolv.conf and all it do  is 
putting it on the last line of the file ( it actually ignores 
EmptyResolvConf  = ( true ) )

address@hidden /]# cat /etc/resolv.conf
domain il.marvell.com
nameserver 10.4.5.10
nameserver 10.4.5.1
lsajdklgf


cfengine debugging doesn't say anything special. ( relevant part below )

I use version 2.1.7 and it happens on both Solaris and Linux.

I can't attach my complete set of config files for security reasons but 
i can include the first ( and relevant ) part cf.main ( you will see 
somehost1,2,3  instead real name for some variables )  :

    ###
    #
    # BEGIN cf.main
    #
    ###

    control:

       access    = ( root )        # Only root should run this

       domain    = ( il.marvell.com )

       sysadm    = ( address@hidden )
       smtpserver     = ( mail.il.marvell.com )  # used by cfexecd

       ChecksumDatabase = ( /var/cfengine/cache.db )

       ChecksumUpdates = ( on )

       EmptyResolvConf  = ( true )

       repository = ( /var/spool/cfengine )

       timezone  = ( IDT IST )

       sensiblesize  = ( 1000 )
       sensiblecount = ( 2 )
       editfilesize  = ( 20000 )

       #
       # If we undefine this with cfengine -N longjob
       # then we switch off all jobs labelled with this class
       #

       addclasses = ( longjob )

       #
       # Macros & constants are inherited downwards in imports
       # but are not passed up to parent files. Good idea to
       # define them all here
       #

       masterfiles = ( /unix_srv/sysconfig/files )

       actionsequence = ( checktimezone resolve directories files 
editfiles processes tidy disable
links mountall copy shellcommands )

       # Local MSIL variables

       PrimaryAdminHost = ( somehost1 )

       Yokneam::

               site = ( Yokneam )
               SecondaryAdminHost = ( somehost2 )

       Yokneam.Servers::

               gateway = ( 10.4.15.254 )

       Yokneam.Desktops::

               gateway = ( 10.4.23.254 )

       Lod::

               site = ( Lod )
               SecondaryAdminHost = ( somehost3 )

       Lod.Servers::

               gateway = ( 10.3.15.254 )

       Lod.Desktops::

               gateway = ( 10.3.23.254 )

       redhat_7_3::

               osver = ( 7.3 )

    ######################################################################

       ## there's a bug which swap the order of the resolver so on host 
gravity10 will be first , Z
eev 28/7 ##
       resolve:

       10.4.5.1
       10.4.5.10

    ######################################################################


Debugging info for relevant part :

(BuildClassEnvironment)
Actionsequence item resolve
GetLock(resolve,,time=1092544457), ExpireAfter=120, IfElapsed=1
GetLastLock()
CheckOldLock(lock.cfagent_conf.lnx81.resolve.)
Unable to find lock data lock.cfagent_conf.lnx81.resolve.
SetLock(lock.cfagent_conf.lnx81.resolve.)
PutLock(lock.cfagent_conf.lnx81.resolve.)
Unable to delete lock [lock.cfagent_conf.lnx81.resolve.]: DB_NOTFOUND: 
No matching key/data pair fou
nd
GetMacroValue(main,EmptyResolvConf)
ExpandVarstring(10.4.5.1)
ExpandVarstring(10.4.5.10)
ReleaseCurrentLock(lock.cfagent_conf.lnx81.resolve.)
PutLock(last.cfagent_conf.100.lnx81.resolve.)
LockLog(Lock removed normally )
Job start time set to Sun Aug 15 07:34:17 2004



The problem above lead to much more major problem - for some reason , if 
resolving doesn't work on the machine , the class which is based on IP 
range doesn't work and then cfengine terminate because it can't parse 
the variables based on such groups. The output is :

Looking for an input file /var/cfengine/inputs/cfagent.conf
Looking for an input file cf.groups
Looking for an input file cf.main
Looking for an input file cf.linux
cf:cfengine::/var/cfengine/inputs/cf.linux:123: faculty/site undefined 
variable
cf:cfengine::/var/cfengine/inputs/cf.linux:123: faculty/site undefined 
variable
cf:cfengine::/var/cfengine/inputs/cf.linux:127: faculty/site undefined 
variable
cf:cfengine::/var/cfengine/inputs/cf.linux:127: faculty/site undefined 
variable

which means that if i do mistake in resolv.conf , i can't fix it with 
cfengine ...

The relevant lines from cf.linux are :

123 : $(masterfiles)/$(site)/linux/all dest=/etc m=644 o=root g=root 
type=checksum include=auto.*
r=1 define=modified_autofs

127: directories:

On debugging mode i indeed see that it says that the host isn't in the 
IP range altough it's there ( the IP of the machine is 10.4.14.81 )

LVALUE Yokneam
HandleLVALUE(Yokneam) in action Groups:
EQUALS =
LEFTBRACK
RVAL-FUNCTION IPRange(10.4.12-21.1-255)
HandleFunctionObject(IPRange(10.4.12-21.1-255))
IsBuiltinFunction(IPRange(10.4.12-21.1-255))
IsBuiltinFunction: IPRange(10.4.12-21.1-255)
ExpandVarstring(10.4.12-21.1-255)
HandleFunction: IPRange(10.4.12-21.1-255)
Check ParsingIPRange(10.4.12-21.1-255)
Unequal
ExpandVarstring(XX_CF_opposite_any_XX)
HandleGroupRVal(XX_CF_opposite_any_XX) group (Yokneam), type=0
[No match of class XX_CF_opposite_any_XX]

If i fix resolv.conf and resolving works , the problem vanish and the 
debug looks like this :

LVALUE Yokneam
HandleLVALUE(Yokneam) in action Groups:
EQUALS =
LEFTBRACK
RVAL-FUNCTION IPRange(10.4.12-21.1-255)
HandleFunctionObject(IPRange(10.4.12-21.1-255))
IsBuiltinFunction(IPRange(10.4.12-21.1-255))
IsBuiltinFunction: IPRange(10.4.12-21.1-255)
ExpandVarstring(10.4.12-21.1-255)
HandleFunction: IPRange(10.4.12-21.1-255)
Check ParsingIPRange(10.4.12-21.1-255)
Matched octet 10 with 10
Matched octet 4 with 4
Matched octet 12-21 with 14
Matched octet 1-255 with 81
Matched IP range
ExpandVarstring(any)
HandleGroupRVal(any) group (Yokneam), type=0
AddClassToHeap(Yokneam)
RIGHTBRACK


Anyone has an idea ?


Thanks !


--
Zeev Fisher - Unix System Administrator
Marvell Semiconductor Israel Ltd
6 Hamada Street Mordot HaCarmel Industrial Park
Yokneam 20692 , ISRAEL
Email    -  address@hidden
Tel      -  + 972 4 9091402
Cell     -  + 972 54 995402
Fax      -  + 972 4 9091501
WWW Page:     http://www.marvell.com

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