[rancid] Re: F5 load balancer support

Lance rancid at gheek.net
Tue Jul 17 18:00:25 UTC 2007


Mike,

Looks really nice. I am guessing the bigip.conf or the other file is
what is displayed with "b list".

-Lance

> -------- Original Message --------
> Subject: RE: [rancid] Re: F5 load balancer support
> From: "Mike Ashcraft" <mashcraft at omniture.com>
> Date: Tue, July 17, 2007 10:49 am
> To: <sam at munzani.com>,  "Lance" <rancid at gheek.net>
> Cc: <rancid-discuss at shrubbery.net>
> 
> I have been on vacation for the last couple of weeks or I would have
> posted this sooner and possibly saved some of you a bit of effort. 
>  
> It sounds like Lance and Sam have put together a working f5rancid with
> basic functionality which Sam posted last night.  I have attached my
> f5rancid which I have been running for a few months.  Installation
> instructions are included as comments in the file.  This version uses
> clogin so that a separate f5login script is not required.
>  
> This version formats and processes the output to make it more usable.
> As far as what is captured, I based this on the F5 equivalent of a tech
> out.  It grabs a copy of all the configuration files, hardware
> configuration and software version as well as the timestamps and file
> sizes for SSL certs hosted on the device.  This facilitates rebuilding
> from scratch as quickly as possible if this is ever needed.  
>  
> I was able to resolve the bug I mentioned yesterday by increasing the
> clogin timeout.  On a small number of devices it failed to process the
> last few commands when running from cron but always worked properly from
> the command line on all devices [making it difficult to track down].   I
> mention this because it may be an appropriate fix for other intermittent
> problems sometimes discussed on this list.
>  
> Any feedback is appreciated.  I hope to get f5 support added to future
> releases of rancid.  
>  
> Thanks,
>  
> Mike
>  
>  
> 
> ________________________________
> 
> From: Sam Munzani [mailto:sam at munzani.com] 
> Sent: Monday, July 16, 2007 7:49 PM
> To: Lance
> Cc: Mike Ashcraft; rancid-discuss at shrubbery.net
> Subject: Re: [rancid] Re: F5 load balancer support
> 
> 
> Lance,
> 
> Thanks a lot for all your help. Pretty much you did all the work while I
> watched what you are doing :-)..
> 
> Attached are cleaned up files. In f5rancid file, I have left some basic
> functions(non platform specific) just in case we expand this script to
> do a lot more than just "b list" output. In rancid-fe, we defined a new
> device type "f5", f5login was copied from clogin and remarked some "term
> length" statements we don't need on F5.
> 
> All 3 files are attached and working great. Please be aware, we are not
> parsing anything at all. All its doing is basic function of running "b
> list" command and capturing its output. As I expand more on this, I will
> be sure to share with the audience here.
> 
> Again, thanks a lot for all your help today.
> 
> Regards,
> Sam
> 
> 
> 	I have helped Sam get a working f5rancid which requires a
> f5login (only
> 	because it doesn't recognize the prompt with a space and exit,
> unless
> 	you enter a return before the exit). He is cleaning up all the
> unused
> 	functions and will post it.
> 	
> 	Once John H. sends out his script I will look at it and see how
> it
> 	differs from the one I did with Sam. I will even help Sam get it
> working
> 	for his setup. We will let you know when it is all working.
> 	
> 	-lance
> 	
> 	  
> 
> 		-------- Original Message --------
> 		Subject: [rancid] Re: F5 load balancer support
> 		From: "Mike Ashcraft" <mashcraft at omniture.com>
> <mailto:mashcraft at omniture.com> 
> 		Date: Mon, July 16, 2007 11:48 am
> 		To: <sam at munzani.com> <mailto:sam at munzani.com> 
> 		Cc: rancid-discuss at shrubbery.net
> 		
> 		Sam,
> 		 
> 		I have a working f5rancid that I have been using for a
> number of months
> 		now.   I have one minor bug related to tracking
> installed SSL certs
> 		which you probably don't care about.  Other than that,
> it works great.
> 		 
> 		I did encounter and solve all the problems you have been
> discussing on
> 		the list.
> 		 
> 		Let me know if you are interested in trying what I have.
> I have tested
> 		it with Big-IP 9.1.2.  
> 		 
> 		Mike
> 		
> 		________________________________
> 		
> 		From: rancid-discuss-bounces at shrubbery.net
> 		[mailto:rancid-discuss-bounces at shrubbery.net] On Behalf
> Of Sam Munzani
> 		Sent: Monday, July 16, 2007 10:58 AM
> 		To: smunzani at comcast.net
> 		Cc: rancid-discuss at shrubbery.net
> 		Subject: [rancid] Re: F5 load balancer support
> 		
> 		
> 		BTW, this is what I see in the log when I do rancid-run
> now. That means
> 		the f5rancid file(hacked copy of rancid) is still
> missing something.
> 		
> 		more nfl.20070716.114842
> 		starting: Mon Jul 16 11:48:42 CDT 2007
> 		
> 		
> 		
> 		Trying to get all of the configs.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 1.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 2.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 3.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 4.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		
> 		cvs diff: Diffing .
> 		cvs diff: Diffing configs
> 		nfl.20070716.114842 71%starting: Mon Jul 16 11:48:42 CDT
> 2007
> 		
> 		
> 		
> 		Trying to get all of the configs.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 1.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 2.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 3.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		=====================================
> 		Getting missed routers: round 4.
> 		test-f5-01: End of run not found
> 		-bash: write: command not found
> 		
> 		cvs diff: Diffing .
> 		cvs diff: Diffing configs
> 		cvs diff: cannot find configs/test-f5-01
> 		cvs commit: Examining .
> 		cvs commit: Examining configs
> 		cvs commit: Up-to-date check failed for
> `configs/test-f5-01'
> 		cvs [commit aborted]: correct above errors first!
> 		ls: test-f5-01: No such file or directory
> 		
> 		ending: Mon Jul 16 11:49:41 CDT 2007
> 		
> 		Thanks,
> 		Sam
> 		
> 		
> 			David,
> 			
> 			Thanks a lot for the tip. This worked well. Now
> f5login goes
> 		much more 
> 			cleaner and the "root" doesn't set sent again. I
> still have
> 		other issues 
> 			where rancid-run is backing up config properly
> but I am still 
> 			troubleshooting it.
> 			
> 			Now here is a question. What does "bldshgalsjd"
> mean and how
> 		does it do 
> 			this miracle?
> 			
> 			Thanks,
> 			Sam
> 			  
> 		
> 				Thanks for this tip, turns out that this
> is also the
> 		reason the
> 				username gets entered at a prompt on the
> cisco IPS
> 		devices. Since it's
> 				using SSH and therefore doesn't need a
> username prompt,
> 		solution was
> 				to simply add in .cloginrc:
> 				
> 				add userprompt ids* bldshgalsjd  (<-
> something that
> 		won't get sent 
> 				during login)
> 				
> 				Regards,
> 				
> 				David
> 				
> 				On 14/07/07, Lance <rancid at gheek.net>
> <mailto:rancid at gheek.net> 
> 		<mailto:rancid at gheek.net> <mailto:rancid at gheek.net>
> wrote:
> 				    
> 		
> 					Sam,
> 					
> 					Have you tried using telnet to
> login, if the f5
> 		has it enabled.
> 					You may also want to set auto
> enable in your
> 		.cloginrc for this device
> 					as it looks to clogin as you are
> already in a
> 		cisco equivalent equal to
> 					enable since your prompt has a #
> sign in it.
> 					
> 					Looking at your next email along
> with this one
> 		it looks like you are
> 					already in a cisco equivalent of
> enable after
> 		you login. f5login seems
> 					to be sending your username of
> root as a command
> 		after you get connected
> 					because it sees this line "Last
> login: Fri Jul
> 		13 14:38:03 2007 from
> 					172.24.100.12" and it matches on
> the word
> 		"Login". See below.
> 					
> 					"(Username|Login|login|user
> name):"? yes
> 					
> 					expect: set expect_out(0,string)
> "login:"
> 					
> 					expect: set expect_out(1,string)
> "login"
> 					
> 					expect: set expect_out(spawn_id)
> "exp4"
> 					
> 					expect: set expect_out(buffer) "
> \r\nLast
> 		login:"
> 					
> 					send: sending "root\r" to { exp4
> }
> 					
> 					expect: continuing expect
> 					
> 					You are just using a Cisco
> login/parsing script
> 		so it expects prompts
> 					from a Cisco device and in this
> case you have a
> 		*nix SSH banner that
> 					gets interrupted. I know you can
> use RANCID to
> 		backup *nix systems. So
> 					it knows how to understand
> connecting to a *nix
> 		system. You might want
> 					to try this email thread which
> asks about
> 		backing up Linux conifgs.
> 			
> 		
> "http://www.shrubbery.net/pipermail/rancid-discuss/2006-August/001649.ht
> 		ml"
> <http://www.shrubbery.net/pipermail/rancid-discuss/2006-August/001649.ht
> ml> 
> 		
> <http://www.shrubbery.net/pipermail/rancid-discuss/2006-August/001649.ht
> 		ml>
> <http://www.shrubbery.net/pipermail/rancid-discuss/2006-August/001649.ht
> ml>   
> 					
> 					Or you could modify the existing
> f5login like
> 		so.
> 					
> 					I think you have to use the
> carrot before the ()
> 		to work. I haven't
> 					checked this as I am at home and
> not on a UNIX
> 		system right now. Sorry
> 					to lazy to check it out right
> now. You might
> 		want to uncomment the line
> 					below 3. and comment out the
> line below 2. and
> 		see if that works. This
> 					is the only point in the code
> that I see it look
> 		for login in any line.
> 					If that doesn't work send me
> back the debug and
> 		I will see what I can
> 					do. I am sure some people that
> use expect more
> 		often then I can probably
> 					quickly tell you what to use as
> syntax there.
> 					
> 					# Figure out prompts
> 					   set u_prompt [find userprompt
> $router
> 					if { "$u_prompt" == "" } {
> 					       #1. ORIGINAL
> 					       #set u_prompt
> 		"^(Username|Login|login|user name):"
> 					       #2. Modified to read for
> a line beginning
> 		with 
> 					Username,Login,login, or
> 					user name.
> 					       set u_prompt
> "^(Username|Login|login|user
> 		name):"
> 					       #3. Modified to read for
> a line beginning
> 		with Login or login. 
> 					but I
> 					may be wrong
> 					       #set u_prompt
> 		"^(Username|^Login|^login|user name):"
> 					   } else {
> 					       set u_prompt [join
> [lindex $u_prompt 0]
> 		""]
> 					
> 					
> 					Let me know if this works for
> you.
> 					
> 					-Lance
> 					
> 					      
> 		
> 						-------- Original
> Message --------
> 						Subject: Re: [rancid]
> F5 load balancer
> 		support
> 						From: Sam Munzani 
> <smunzani at comcast.net> <mailto:smunzani at comcast.net> 
> 		<mailto:smunzani at comcast.net>
> <mailto:smunzani at comcast.net>  
> 						Date: Fri, July 13, 2007
> 2:30 pm
> 						To: Lance 
> <rancid at gheek.net> <mailto:rancid at gheek.net> 
> 		<mailto:rancid at gheek.net> <mailto:rancid at gheek.net>  
> 						Cc: 
> rancid-discuss at shrubbery.net
> 						
> 						Lance,
> 						
> 						F5 login works fine with
> a minor error.
> 						
> 						$ f5login test-f5-01
> 						test-f5-01
> 						spawn ssh -c 3des -x -l
> root test-f5-01
> 						Password:
> 						Last login: Fri Jul 13
> 14:26:28 2007
> 		from 172.24.100.12
> 						root
> 						[root at test-f5-01:Active]
> config # root
> 						-bash: root: command not
> found
> 						[root at test-f5-01:Active]
> config #
> 						[root at test-f5-01:Active]
> config #
> 						[root at test-f5-01:Active]
> config #
> 						
> 						I don't know how to
> debug otherwise I
> 		would turn on debug too. If you
> 						can provide some hints
> on debug, I would
> 		appreciate it.
> 						
> 						Thanks,
> 						Sam
> 						        
> 		
> 						What error(s) do you get
> when you try to
> 		run your f5rancid?
> 						
> 						Where does it fail if
> you debug your
> 		f5login?
> 						
> 						
> 						-lance
> 						
> 						
> 						          
> 		
> 						-------- Original
> Message --------
> 						Subject: [rancid]  F5
> load balancer
> 		support
> 						From: Sam Munzani 
> <smunzani at comcast.net> <mailto:smunzani at comcast.net> 
> 		<mailto:smunzani at comcast.net>
> <mailto:smunzani at comcast.net>  
> 						Date: Fri, July 13, 2007
> 12:45 pm
> 						To: 
> rancid-discuss at shrubbery.net
> 						
> 						Hi,
> 						
> 						Did anybody happened to
> hack one of
> 		Cisco scripts to support 
> 						            
> 		
> 					BigIP F5
> 					      
> 		
> 						boxes? It should be
> pretty simple. All I
> 		want to do is login and
> 						            
> 		
> 						type "b
> 						        
> 		
> 						list" which is
> equivalent of "show run"
> 		on cisco.
> 						
> 						However for some reason
> things not
> 		working. All I did was copied
> 						            
> 		
> 						clogin
> 						        
> 		
> 						to f5login, copied
> rancid to f5rancid
> 		and added following to
> 						            
> 		
> 						rancid-fe.
> 						        
> 		
> 						elsif ($vendor =~
> /^f5$/i)
> 		{ exec('f5rancid', 
> 						            
> 		
> 					$router); }
> 					      
> 		
> 						Then modified f5 rancid
> file and kept
> 		only one command in list of
> 						commands "b list".
> 						
> 						For some reason its not
> working. I can
> 		post my configs here if
> 						            
> 		
> 						somebody
> 						        
> 		
> 						like to see them.
> 						
> 						Thanks,
> 						Sam
> 			
> 		_______________________________________________
> 						Rancid-discuss mailing
> list
> 						
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> 			
> 		
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> 		
> 						
> 						          
> 		
> 	
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