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Re: resolve bug ?
From: |
Mark . Burgess |
Subject: |
Re: resolve bug ? |
Date: |
Sun, 15 Aug 2004 07:36:54 +0200 (MEST) |
Well, it does what it says in the manual - removes old nameserver entries.
But I agree that it should remove everything.
M
On 15 Aug, Zeev Fisher wrote:
> 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 !
>
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Work: +47 22453272 Email: address@hidden
Fax : +47 22453205 WWW : http://www.iu.hio.no/~mark
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- resolve bug ?, Zeev Fisher, 2004/08/15
- Re: resolve bug ?,
Mark . Burgess <=