Re: [help] error to configure OVS

[Niky Riga]

Hi Amjad,

I am adding geni-users to the distribution. I saw that you also sent an
email to protogeni-users as well, when you need help you can just email
geni-users there is no reason for cross-posting.

I am not sure why you are getting this error. What is your slice name,
what machine (client-id) is giving you this error? Can you check the
availability of space by running 'df -k'?

Cheers,
Niky

Md. Amjad Hossain wrote:
> Hi ,
>
> I am trying to configure OVSs. One of the OVSs allowing only two ports
> to add while others allowing more than 2. I have installed same image
> for all OVSs.
>
> When I am running command on the machine showing error# ovs-vsctl
> add-port br0 eth3
> it shows following error:
>
> ovs-vsctl: transaction error: {"details":"writing transaction failed:
> /etc/openvswitch/conf.db: write failed","error":"I/O
> error","io-error":"No space left on device"}
>
>
> Any solution please?
>
> Regards
> Amjad

[Niky Riga]

Hmm I think that someone from Utah has to take a look to your node and
figure this out. It looks like your hard disk is full but you say that
the output is the same for all OVS hosts and in some of them the command
works so I am out of ideas.

Cheers,
niky

Md. Amjad Hossain wrote:
> Hello Niky,
>
> My slice name is "KernelOVS" and the client-id of the Machine is "VM-1".
> I am running OVS on "VM-0", " VM-1" and "VM-2". The output of " df-k"
> for all OVSs machines are same:
>
> root@vm-1:/etc/openvswitch# df -k
> Filesystem 1K-blocks Used
> Available Use% Mounted on
> /dev/xvda2 6104324 6104324
> 0 100% /
> udev 100632 4
> 100628 1% /dev
> tmpfs 48892 220
> 48672 1% /run
> none 5120 0
> 5120 0% /run/lock
> none 122228 0
> 122228 0% /run/shm
> 172.17.253.254:/q/proj/ch-geni-net 65353898 36836910
> 23288678 62% /proj/ch-geni-net
> 172.17.253.254:/share 27415734 4
> 25222472 1% /share
> 172.17.253.254:/q/groups/ch-geni-net/KENT-MMCSALE 65353898 36836910
> 23288678 62% /groups/ch-geni-net/KENT-MMCSALE
>
>
> Thanks

[Leigh Stoller]

> Hmm I think that someone from Utah has to take a look to your node and figure this out. It looks like your hard disk is full but you say that the output is the same for all OVS hosts and in some of them the command works so I am out of ideas.

Hi. I am not sure I see in the email what aggregate managers your slivers are on.
Can you provide that info please. Also an rspec would be handy.

Lbs

[Md. Amjad Hossain]

Hello Stoller,

I am using VMs from utah.geniracks.net. My RsPEC is attached.

Thanks

Amjad

[Leigh Stoller]

>> My slice name is "KernelOVS" and the client-id of the Machine is "VM-1".
>> I am running OVS on "VM-0", " VM-1" and "VM-2". The output of " df-k"
>> for all OVSs machines are same:

Hi. So here is what I did on one of your nodes:

vm> cd /
vm> du -s -h -x *

This indicated that /var had 3.5 gigs in it, which is quite unusual.
Drilling down into /var:

vm> cd /var
vm> du -s -h -x *

I see that all the space is in the logs directory. Drilling down another
level:

vm> cd /var/logs
vm> ls -lS | head -n 5
total 3620704
-rw-r--r-- 1 root root 3689521152 Jan 29 10:21 omf_rc.log
-rw-rw-r-- 1 root utmp 7716864 Jan 29 17:24 wtmp

We see that there is a giant log file. I have no idea what this log file or
what generates it, but I will not that you are running the Ubuntu1204GIMIOVS2
image, so someone who knows what is running inside this image will have to
say more.

Lbs

[Divyashri Bhat]

Hi Amjad,

What experiment are you trying to run on this image? Also could you please send us the file omf_rc.log

The path for that file on your node is:

/var/log/omf_rc.log.

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Regards,

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Graduate Student

University of Massachusetts, Amherst

E-mail: divyash...@gmail.com

[Niky Riga]

Just to clarify, Amhad only care about the OVS in this image, it is just
the one stable OVS image I had so far and shared it with him,
so probably he can shut off the gimi stuff (although it is still useful
to figure out why the logs are so big).

I will go back and work on an OVS-only image.

--niky

Divyashri Bhat wrote:
> Hi Amjad,
>
> What experiment are you trying to run on this image? Also could you
> please send us the file omf_rc.log
> The path for that file on your node is:
> /var/log/omf_rc.log.
>
>
> On Wed, Jan 29, 2014 at 6:21 PM, Md. Amjad Hossain <mhos...@kent.edu
> <mailto:mhos...@kent.edu>> wrote:
>
> Hello Stoller,
>

> I am using VMs from utah.geniracks.net <http://utah.geniracks.net>.

> My RsPEC is attached.
>
> Thanks
> Amjad
>
>
> On Wed, Jan 29, 2014 at 5:19 PM, Leigh Stoller <lbst...@gmail.com
> <mailto:lbst...@gmail.com>> wrote:
>
> > Hmm I think that someone from Utah has to take a look to your
> node and figure this out. It looks like your hard disk is full
> but you say that the output is the same for all OVS hosts and in
> some of them the command works so I am out of ideas.
>
> Hi. I am not sure I see in the email what aggregate managers
> your slivers are on.
> Can you provide that info please. Also an rspec would be handy.
>
> Lbs
>
>
>
>
>
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>
>
>
> --
> Regards,
> Divyashri Bhat
> Graduate Student
> University of Massachusetts, Amherst

> E-mail: divyash...@gmail.com <mailto:divyash...@gmail.com>

[Divyashri Bhat]

If this is the recent image we built during the winter camp, I can take a look.

The only thing I can think of now is the log messages that show up when there are no experiments running is the connection to the XMPP server but I cannot imagine this growing up to 3.1GB. Once he sends us the log file from the node, I will take a look.

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--
Regards,
Divyashri Bhat
Graduate Student
University of Massachusetts, Amherst

E-mail: divyash...@gmail.com <mailto:divyashri.bhat@gmail.com>

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[Leigh Stoller]

> If this is the recent image we built during the winter camp, I can take a look.
> The only thing I can think of now is the log messages that show up when there are no experiments running is the connection to the XMPP server but I cannot imagine this growing up to 3.1GB. Once he sends us the log file from the node, I will take a look.

Send him a public key so you can log in, don't transfer a 3.5 gig file.

Lbs

[Divyashri Bhat]

Thanks Leigh. Amjad would have to add my key to the portal under SSH keys. Is that correct?

Amjad, my public key is attached here. Could you add this key so that I can take a look at that file?

Thanks.

Lbs

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[Niky Riga]

The easiest way to do this at the moment is to directly edit his
authorized keys file.

Amjad open this file on the node ~/.ssh/authorized_keys and append in
the end the content of the file Divya sent you. Then please send to
Divya the login command you use to login to the nodes, i.e. :
* the username
* the hostname
* the port

--nik

> <mailto:geni-users%2Bunsu...@googlegroups.com>.

> For more options, visit https://groups.google.com/groups/opt_out.
>
>
>
>
> --
> Regards,
> Divyashri Bhat
> Graduate Student
> University of Massachusetts, Amherst

> E-mail: divyash...@gmail.com <mailto:divyash...@gmail.com>

[Md. Amjad Hossain]

Thanks Stoller.

I have opened that log file for all of the three machines where OVS is running. Log files in three machine contain same logs like follows. I have seen at beginning of the files, I don't know what is at the end.

logs: 

.

.

.

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

[2014-01-28 01:53:26 -0700] WARN  OmfCommon::Comm::XMPP::Communicator: Disconnected... Last known state: initializing

[2014-01-28 01:53:26 -0700] INFO  OmfCommon::Comm::XMPP::Communicator: Connecting to 'localhost' ...

.

.

.

.

In my another slice the size of same log file is 764M and at the beginning of the file it contains same things as above. 

Someone please help.

[Alison Chan]

To look at the end you can use 'tail whatever.log'

Alison Chan, Kettering University
+1 909 278 7753
(sent from my tablet)

[Divyashri Bhat]

Amjad, could you please follow the steps Niky has mentioned above and allow me to login to any one of the nodes? If I can take a look at the entire log file, it may help me to figure out why these logs are so big. 

Also, since how long has your node been up and running (How old is your node)?

Thanks.

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[mhos...@kent.edu]

Hi Divyashri,

I have tried to follow the steps Niky sent me. But The file is not allowing me to append anything. I think we have to work in alternative way. I have added you public key in my profile. Here I have attached my one. Let me know if you need anything else. 

Regards

Amjad

[mhos...@kent.edu]

Nodes are running for last 2 days.

[Divyashri Bhat]

Hi Amjad,

Could you please send me the name of your Slice and Project? Also, could you add me to your slice? (I am not sure if this works after the resources have been reserved)

[Niky Riga]

mhos...@kent.edu

January 29, 2014 11:59 PM

Hi Divyashri,

I have tried to follow the steps Niky sent me. But The file is not allowing me to append anything.

Can you be more specific about what is the error you get?
What you have to do is:
  1. open the file  ~/.ssh/authorized_keys
  2. go to the end of the file
  3. paste in the end the contents of the file that Divya sent
  4. save the file

Can you tell me which of these steps if failing?

Thanks,
NIky

Divyashri Bhat

January 29, 2014 11:13 PM

Amjad, could you please follow the steps Niky has mentioned above and allow me to login to any one of the nodes? If I can take a look at the entire log file, it may help me to figure out why these logs are so big. 

Also, since how long has your node been up and running (How old is your node)?

Thanks.

--
Regards,

Divyashri Bhat

Graduate Student

University of Massachusetts, Amherst

E-mail: divyash...@gmail.com

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Md. Amjad Hossain

January 29, 2014 11:08 PM

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Leigh Stoller

January 29, 2014 7:26 PM

Hi. So here is what I did on one of your nodes:

vm> cd /
vm> du -s -h -x *

This indicated that /var had 3.5 gigs in it, which is quite unusual.
Drilling down into /var:

vm> cd /var
vm> du -s -h -x *

I see that all the space is in the logs directory. Drilling down another
level:

vm> cd /var/logs
vm> ls -lS | head -n 5
total 3620704
-rw-r--r-- 1 root root 3689521152 Jan 29 10:21 omf_rc.log
-rw-rw-r-- 1 root utmp 7716864 Jan 29 17:24 wtmp

We see that there is a giant log file. I have no idea what this log file or
what generates it, but I will not that you are running the Ubuntu1204GIMIOVS2
image, so someone who knows what is running inside this image will have to
say more.

Lbs

Niky Riga

January 29, 2014 4:44 PM

Hmm I think that someone from Utah has to take a look to your node and figure this out. It looks like your hard disk is full but you say that the output is the same for all OVS hosts and in some of them the command works so I am out of ideas.

Cheers,
niky

[Hussamuddin Nasir]

I am guessing its becasue the disk is full that any editor that he is trying to open up fails since they require to write a tmp file. I know for a fact that vim does this where in it opens up in read only mode due to the disk being full.

cheers,

Hussam
(Hussamuddin Nasir)

Netlab Operations Team 

-------------------------------------------------------------------
Laboratory for Adv. Networking  Phone  : (859)218-0059
James F Hardymon Building       Fax    : (859)323-3740
301 Rose Street, Rm 237         E-mail : na...@netlab.uky.edu
Lexington, KY 40506-0495        Web    : http://www.netlab.uky.edu

                        University of Kentucky
                        **********************
------------------------------------------------------------------- 

[Niky Riga]

Aw yes, stupid me, you are absolutely right.

Amjad can you send us the content of your /tmp directory?

ls -al /tmp

Also, while we try to debug this you can start in a slice and bring up
your setup. Divya can tell you how to stop the omf service so that this
log does not get that big in your new slice.

--niky

Hussamuddin Nasir wrote:
> I am guessing its becasue the disk is full that any editor that he is
> trying to open up fails since they require to write a tmp file. I know
> for a fact that vim does this where in it opens up in read only mode due
> to the disk being full.
>
> cheers,
>
> Hussam
> (Hussamuddin Nasir)
>
> Netlab Operations Team
>
> -------------------------------------------------------------------
> Laboratory for Adv. Networking Phone : (859)218-0059
> James F Hardymon Building Fax : (859)323-3740
> 301 Rose Street, Rm 237 E-mail :na...@netlab.uky.edu
> Lexington, KY 40506-0495 Web :http://www.netlab.uky.edu
>
> University of Kentucky
> **********************
> -------------------------------------------------------------------
>
> On 01/30/2014 03:07 PM, Niky Riga wrote:

>>> mhos...@kent.edu <mailto:mhos...@kent.edu>

>>> Divyashri Bhat <mailto:divyash...@gmail.com>

>>> January 29, 2014 11:13 PM
>>> Amjad, could you please follow the steps Niky has mentioned above and
>>> allow me to login to any one of the nodes? If I can take a look at
>>> the entire log file, it may help me to figure out why these logs are
>>> so big.
>>>
>>> Also, since how long has your node been up and running (How old is
>>> your node)?
>>>
>>> Thanks.
>>>
>>>
>>>
>>>
>>>
>>> --
>>> Regards,
>>> Divyashri Bhat
>>> Graduate Student
>>> University of Massachusetts, Amherst

>>> E-mail: divyash...@gmail.com <mailto:divyash...@gmail.com>

>>> --
>>> GENI Users is a community supported mailing list, so please help by
>>> responding to questions you know the answer to.
>>>
>>> If this is your first time posting a question to this list, please
>>> review
>>> http://groups.geni.net/geni/wiki/GENIExperimenter/CommunityMailingList
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "GENI Users" group.
>>> To unsubscribe from this group and stop receiving emails from it,
>>> send an email to geni-users+...@googlegroups.com.
>>> For more options, visit https://groups.google.com/groups/opt_out.

>>> Md. Amjad Hossain <mailto:mhos...@kent.edu>

>>> Leigh Stoller <mailto:lbst...@gmail.com>

>>> January 29, 2014 7:26 PM
>>>
>>> Hi. So here is what I did on one of your nodes:
>>>
>>> vm> cd /
>>> vm> du -s -h -x *
>>>
>>> This indicated that /var had 3.5 gigs in it, which is quite unusual.
>>> Drilling down into /var:
>>>
>>> vm> cd /var
>>> vm> du -s -h -x *
>>>
>>> I see that all the space is in the logs directory. Drilling down another
>>> level:
>>>
>>> vm> cd /var/logs
>>> vm> ls -lS | head -n 5
>>> total 3620704
>>> -rw-r--r-- 1 root root 3689521152 Jan 29 10:21 omf_rc.log
>>> -rw-rw-r-- 1 root utmp 7716864 Jan 29 17:24 wtmp
>>>
>>> We see that there is a giant log file. I have no idea what this log
>>> file or
>>> what generates it, but I will not that you are running the
>>> Ubuntu1204GIMIOVS2
>>> image, so someone who knows what is running inside this image will
>>> have to
>>> say more.
>>>
>>> Lbs
>>>

>>> Niky Riga <mailto:nr...@geni.net>

>>> January 29, 2014 4:44 PM
>>> Hmm I think that someone from Utah has to take a look to your node
>>> and figure this out. It looks like your hard disk is full but you say
>>> that the output is the same for all OVS hosts and in some of them the
>>> command works so I am out of ideas.
>>>
>>> Cheers,
>>> niky
>>>
>>>
>>>

>>> ------------------------------------------------------------------------

[mhos...@kent.edu]

Hi Niky,

I can write anything in the "authorized keys" file but it does not allow me to save. In fact I have lost the file's old content when I tried to save from a visual ssh terminal ( MobaXterm). 

Divya please try to login VM-0 or VM-2 because I have lost the content of " authorized_keys" file in  VM-1.

Here is the content of tmp directory:

vm-2:~% ls -al /tmp

total 20

drwxrwxrwt  4 root root 4096 Jan 30 15:17 .

drwxr-xr-x 36 root root 4096 Jan  8 14:19 ..

drwxrwxrwt  2 root root 4096 Jan 28 01:54 .ICE-unix

-rw-r--r--  1 root root 1642 Jan 28 01:54 ntp.conf.new

drwxrwxrwt  2 root root 4096 Jan 28 01:54 .X11-unix

I will try to load the Rspec in another slice.

Thanks

[mhos...@kent.edu]

HI Divya,

I have sent you invitation to join the project I am working in. The project name is KENT-MMCSALE and Slice name is KernelOVS. Accept the invitation, then I will be able to add you in my slice. But the problem is, probably you will not be able to access the resources already reserved using Flack. Because I have seen following text in the page where I tried to add you in my project/slice: 

Slice members will be able to login to resources reserved in the future if:

• The resources were reserved directly through the portal (by clicking Add Resources on the slice page), and
• The slice member has uploaded an ssh public key.

Problem is with first point. I have reserved resources using Flack.

Now we can do what Niky said. I will reserve same resources in another new slice. You just tell me how to stop OMF service.

Thanks 

[mhos...@kent.edu]

Hi all,

I found that the log file in var directory increasing continuously. In my another slice, last night ( 11:PM) I found the size of log file 754 but now its 2.2Gb. I didn't run any experiment from last night. 

Thanks

[Jeanne Ohren]

You can stop the OMF service by executing this command on each of your nodes:

sudo service omf_rc stop

This should stop the log file from growing any further.

--Jeanne

-- 
Jeanne Ohren
Software Engineer
Raytheon BBN Technologies
Office: 952.545.5726
Cell: 612.963.0395
Jabber: joh...@j.ir.bbn.com

[Niky Riga]

Hi Divya,
As you are looking into this keep in mind that there are no boot scripts
executed when this image boots. So although there are the gimi stuff
installed gimiboot is not installed and run.

Cheers,
Niky

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[Divyashri Bhat]

Hi Amjad,

As I suspected this problem has come up because the resource controller client is not connected to the correct XMPP server because the config file has not been changed. This config file is changed in the postboot script.

When you use GIMI enabled images with InstaGENI, kindly add the following postboot script to your request RSpec to avoid the RC logs filling up.

 <services>

      <execute command="sudo cp /gimibot/gimibot.sh /gimibot/postboot_script.sh /; chmod +x /gimibot.sh; chmod +x /postboot_script.sh; sudo sh /postboot_script.sh" shell="sh"/>

      <install install_path="/" url="http://emmy9.casa.umass.edu/GEC-17/gimibot_omf6.tar.gz"/>

   </services>

In the current resource if you are not interested in using GIMI services you could stop the Resource Controller by running 

sudo stop omf_rc

as Jeanne suggested.  To free up space you could delete the contents of /var/log/omf_rc.log after you execute the above command.

If you would like to use GIMI for measurements, here is a link to an introductory tutorial,

http://groups.geni.net/geni/wiki/GEC18Agenda/GettingStartedWithGENI_III_GIMI/Procedure

Really sorry about the inconvenience this has caused you.

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[mhos...@kent.edu]

Thanks Divya. In my experiment I don't need to use GIMI now. So, I will work just stopping the omf service.

Thanks all.

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