[rancid] Unable to figure out "end of run not found"

Wed Jun 19 21:01:40 UTC 2019

iirc:
; is to seperate commands and wil execute the whole command string without checking the return value of the previous command
&& will do the same, but if previous command returns not null (you can check the return code of the previous command with "echo $?") it will end the command list.

the syntax is question "NOPIPE=yes" will set the environment variable NOPIPE but only for the context of the command that's executed.
appending ; between NOPIPE=yes & the command will _NOT_ do what you expect; it will execute and empty cmd with nopipe env set to yes, then execute your command with default envvars.

you can compare:

AHHA=aha env | grep -i aha
output -> AHHA=aha
AHHA=aha; env | grep -i aha
output -> nothing

export with set the envvar for your current session:
env  | grep -i nop
-> output nothing
export NOPIPE=yes
env  | grep -i nop
output ->NOPIPE=yes

all examples done in bash instead of my preferred zsh. if you use csh/tcsh or fish i would guess you know what you're doing and can adapt the config to work.

bottom line, this is correct for most bourne shell derivatives:
NOPIPE=yes rancid -d -t <type> <devicename>

here's the catch, if you run rancid from cron you will either need to uncomment the NOPIPE line in yr rancid.conf or add them to your crontab entry.

side note:
the next rancid version will most likely change this behaviour:
https://github.com/haussli/rancid/commit/94318333c8f0d746abdd22cf4430636a394def8f

// nick

From: Rancid-discuss [mailto:rancid-discuss-bounces at shrubbery.net] On Behalf Of Gauthier, Chris
Sent: Tuesday, June 18, 2019 00:10
To: Piegorsch, Weylin William <weylin at bu.edu>; Michael Newton <mnewton at pofp.com>; Vacheslav Zouhairy <m_zouhairy at skno.by>
Cc: rancid-discuss at shrubbery.net
Subject: Re: [rancid] Unable to figure out "end of run not found"

Interesting.  I thought it would get mixed up into the value of the variable…. I’m not an expert programmer at all, but thought I needed to use the ; to separate the commands appropriately.  But, my expertise on shell variables is a tad (understatement, really) limited.  So, I shall defer! :)

Cheers,
Chris

Chris

Gauthier

 Senior Network Engineer

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From: "Piegorsch, Weylin William" <weylin at bu.edu>
Date: Monday, June 17, 2019 at 2:05 PM
To: "Gauthier, Chris" <cgauthier at comscore.com>, Michael Newton <mnewton at pofp.com>, Vacheslav Zouhairy <m_zouhairy at skno.by>
Cc: "rancid-discuss at shrubbery.net" <rancid-discuss at shrubbery.net>
Subject: Re: [rancid] Unable to figure out "end of run not found"

I actually don't use the semicolon. Not sure if this is bash specific, sh specific, or posix general, but without the semicolon it sets the global environment variable only for the duration of that command following the variable definition, and unset it upon returning control to the cli. See also your "export" comment, which has correlating implications regarding environment vs namespace vs scope.
But I'm not an experienced programmer, and don't pretend to grok the various nuances, benefits, and pitfalls known by those who actually know what they're doing, so if using the semicolon is better I all ears.
weylin
Sent from Outlook on my 'Droid

________________________________
From: Gauthier, Chris <cgauthier at comscore.com>
Sent: Monday, June 17, 2019 4:22:02 PM
To: Piegorsch, Weylin William; Michael Newton; Vacheslav Zouhairy
Cc: rancid-discuss at shrubbery.net
Subject: Re: [rancid] Unable to figure out "end of run not found"

Don’t forget the ; between the NOPIPE=yes and the rest of the command!  :-)

Some flavors of linux also want you to use the export command..

Chris

Gauthier

 Senior Network Engineer

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Comscore

t +1 (503) 331-2704<tel:(503)%20331-2704>

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cgauthier at comscore.com<mailto:cgauthier at comscore.com>

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From: Rancid-discuss <rancid-discuss-bounces at shrubbery.net> on behalf of "Piegorsch, Weylin William" <weylin at bu.edu>
Date: Saturday, June 15, 2019 at 7:52 AM
To: Michael Newton <mnewton at pofp.com>, Vacheslav Zouhairy <m_zouhairy at skno.by>
Cc: "rancid-discuss at shrubbery.net" <rancid-discuss at shrubbery.net>
Subject: Re: [rancid] Unable to figure out "end of run not found"

> So this got me looking for how to do debug output per-host

If you’re using Linux, the command is:

NOPIPE=yes rancid -d -t <type> <devicename>

This will generate two files:
.new
.raw

.new is the parsed output
.raw is pure log of the session (ie, it even captures non-printing characters).  I believe it’s only dumped if you set both NOPIPE and -d.

I’ve used the .raw output on many occasions.  At the moment I’m even troubleshooting a device CPU issue that rancid tripped on that I wouldn’t have found but for this; “clogin -c<command-set> <device>” was even working fine.

weylin

From: Michael Newton <mnewton at pofp.com>
Date: Monday, June 10, 2019 at 11:25 AM
To: Vacheslav Zouhairy <m_zouhairy at skno.by>
Cc: <rancid-discuss at shrubbery.net>
Subject: Re: [rancid] Unable to figure out "end of run not found"

No, there is not. But I guess you're thinking maybe the login doesn't work because of heavy traffic.

So this got me looking for how to do debug output per-host. There doesn't seem to be, but that got me to this posting: https://www.shrubbery.net/pipermail/rancid-discuss/2015-October/008742.html<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.shrubbery.net%2fpipermail%2francid-discuss%2f2015-October%2f008742.html&c=E,1,ekhutmoeYC8nJjY5ygYIWeZtgfLUg9xzHFGeBIFHMUPKVuB2mZH94N3eF_QgXs0jXOsAB3OfrKr8A5kG_gIC11YP5eAWNrT_fRatYLjW22bodf8oDA,,&typo=1> And that made me notice that my router.db entry was corrupt (wrong device type.)

So, typical user error. Thanks for (indirectly) getting me in the right direction though!

Mike

On Mon, 10 Jun 2019 at 00:22, Vacheslav Zouhairy <m_zouhairy at skno.by<mailto:m_zouhairy at skno.by>> wrote:
Is there any bandwidth hog on those switches by any chance?

On Fri, 2019-06-07 at 18:16 -0600, Michael Newton wrote:
> Hi all, we manage about 200-300 Brocade ICX switches across a number
> of locations. All but two are being successfully polled. The two in
> question (same firmware and a similar config to the others)
> consistently show "end of run not found" when run as part of the cron
> job. But, when run manually for troubleshooting, everything seems to
> work.
>
> `sudo -u rancid flogin switchname` works fine and logs me into the
> switch.
>
> `sudo -u rancid flogin -c 'show version;show clock' switchname`
> likewise works fine. Logs in, runs the commands, and logs out.
>
> `sudo -u rancid rancid -t foundry -d switchname` runs through
> everything perfectly. The switchname.new<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fswitchname.new&c=E,1,u3rpkaeqsecxvPWZllacfnG3P4NxiddLWnK7ixyuOtuFx2zmxUrFwYjeq9HWP2sZvfaFig4pKtv5uTsr3_jwUdFVXEsoBKXQM0w6j_Zu1A,,&typo=1> file has the expected
> output.
>
> Yet the log for the automated process consistently shows this:
>
> switchname: End of run not found
> end
>
> Is there anything else I can do to troubleshoot this? Thanks in
> advance!
>
> Mike
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