[Openstack] Two Neutron two interface DOWN

Andreas Scheuring scheuran at linux.vnet.ibm.com
Wed May 20 15:23:40 UTC 2015


Could you please provide the following data. Otherwise it's hard
debugging anything via mail: 


# Authenticate to your cloud [1] and then run the following command to
show all the details of your external network:
> neutron net-show home

#Run these commands to collect more information about your host setup

> ovs-vsctl show

> ip a

> ps -ax | grep neutron-

> cat /etc/neutron/plugin.ini

> cat /etc/neutron/plugins/ml2/ml2_conf.ini


[1] http://docs.openstack.org/cli-reference/content/cli_openrc.html



-- 
Andreas 
(irc: scheuran)


On Wed, 2015-05-20 at 22:30 +0800, Wilson Kwok wrote:
> Hello,
> 
> 
> Please see attached screenshot, you can see the instance can get DHCP
> from Neutron router, but still cannot ping router IP.
> 
> 
> Thanks
> 
> 2015-05-20 14:14 GMT+08:00 Andreas Scheuring
> <scheuran at linux.vnet.ibm.com>:
>         That's easy ;)
>         Just have a look at the console, it's saying
>         
>         user: cirros
>         password: cubswin:)
>         
>         That's working perfectly, unless you're not setting something
>         else with
>         cloud-init.
>         
>         --
>         Andreas
>         (irc: scheuran)
>         
>         
>         On Wed, 2015-05-20 at 09:06 +0800, Wilson Kwok wrote:
>         > Hi Andreas,
>         >
>         >
>         > Thanks for helping this newbie :D
>         >
>         >
>         > I don't know the password of the instance.
>         >
>         >
>         > Thanks
>         >
>         > 2015-05-20 4:12 GMT+08:00 Andreas Scheuring
>         > <scheuran at linux.vnet.ibm.com>:
>         >         Wilson,
>         >         you can at least access your instance using the vnc
>         console
>         >         you already
>         >         showed. If it's not working in the view you had
>         screenshoted,
>         >         use the
>         >         link saying "show console only" or something like
>         that. Then
>         >         you should
>         >         be able to log in to your instance. From there try
>         to ping
>         >         your internal
>         >         and external gateway and see how for you get...
>         >
>         >
>         >         The Security Group rules look fine!
>         >
>         >         But in order to find out the real issue, it would be
>         great if
>         >         you
>         >         collect the following data. Without that info it's
>         just
>         >         guessing...
>         >         Just paste it into the mail:
>         >
>         >
>         >         # Authenticate to your cloud [1] and then run the
>         following
>         >         command to
>         >         show all the details of your external network:
>         >         > neutron net-show home
>         >
>         >         #Run these commands to collect more information
>         about your
>         >         host setup
>         >
>         >         > ovs-vsctl show
>         >
>         >         > ip a
>         >
>         >         > ps -ax | grep neutron-
>         >
>         >         > cat /etc/neutron/plugin.ini
>         >
>         >         > cat /etc/neutron/plugins/ml2/ml2_conf.ini
>         >
>         >
>         >         [1]
>         >
>          http://docs.openstack.org/cli-reference/content/cli_openrc.html
>         >
>         >
>         >
>         >
>         >         --
>         >         Andreas
>         >         (irc: scheuran)
>         >
>         >
>         >         On Tue, 2015-05-19 at 20:42 +0800, Wilson Kwok
>         wrote:
>         >         > Also attached ifconfig to you.
>         >         >
>         >         > 2015-05-19 20:35 GMT+08:00 Wilson Kwok
>         <leiw324 at gmail.com>:
>         >         >         And the security group for this instance,
>         please see
>         >         attached.
>         >         >
>         >         >         2015-05-19 20:33 GMT+08:00 Wilson Kwok
>         >         <leiw324 at gmail.com>:
>         >         >                 Hi Andreas,
>         >         >
>         >         >
>         >         >                 The instance created (Please see
>         attached
>         >         >                 console.jpg), and it floating ip
>         is
>         >         172.28.0.201
>         >         >                 (Please see attached floating
>         IP.jpg),
>         >         inside of my
>         >         >                 home PC can't ping 172.28.0.201,
>         so I can't
>         >         use
>         >         >                 keypair to access this instance,
>         any idea ?
>         >         >
>         >         >
>         >         >                 Thanks
>         >         >
>         >         >
>         >         >                 2015-05-19 14:24 GMT+08:00 Andreas
>         Scheuring
>         >         >                 <scheuran at linux.vnet.ibm.com>:
>         >         >                         Hi Wilson,
>         >         >                         don't get hung up on the
>         port state
>         >         for now,
>         >         >                         let's focus on on your
>         >         >                         "ping" test that is not
>         working.
>         >         >
>         >         >                         I had a brief look at the
>         pictures
>         >         you
>         >         >                         attached. The first thing
>         that
>         >         >                         caught my attention is
>         that your
>         >         instance is
>         >         >                         shut off. So no chance to
>         >         >                         ping it anyhow!
>         >         >
>         >         >                         If it's still not working
>         with a
>         >         running
>         >         >                         instance. Check your
>         security
>         >         >                         groups setup. The Security
>         Group
>         >         attached to
>         >         >                         your instance needs a rule
>         >         >                         like this in order to ping
>         your
>         >         guest from
>         >         >                         outside:
>         >         >                         Ingress - CIDR 0.0.0.0/0 -
>         icmp
>         >         >
>         >         >
>         >         >                         And if you still have
>         problems, we
>         >         need to
>         >         >                         have a look at your setup.
>         >         >                         Please provide the
>         following
>         >         information to
>         >         >                         allow further debugging. I
>         >         >                         assume you configured your
>         cloud
>         >         with
>         >         >                         Openvswitch...
>         >         >
>         >         >
>         >         >
>         >         >                         From your Controller Node:
>         >         >
>         >         >                         # Authenticate to your
>         cloud [1] and
>         >         then run
>         >         >                         the following command to
>         >         >                         show all the details of
>         your
>         >         external network:
>         >         >                         > neutron net-show home
>         >         >
>         >         >                         #Run these commands to
>         collect more
>         >         >                         information about your
>         host setup
>         >         >
>         >         >                         > ovs-vsctl show
>         >         >
>         >         >                         > ip a
>         >         >
>         >         >                         > ps -ax | grep neutron-
>         >         >
>         >         >                         >
>         cat /etc/neutron/plugin.ini
>         >         >
>         >         >                         >
>         >         cat /etc/neutron/plugins/ml2/ml2_conf.ini
>         >         >
>         >         >
>         >         >                         [1]
>         >         >
>         >
>         http://docs.openstack.org/cli-reference/content/cli_openrc.html
>         >         >
>         >         >
>         >         >
>         >         >                         --
>         >         >                         Andreas
>         >         >                         (irc: scheuran)
>         >         >
>         >         >
>         >         >                         On Mon, 2015-05-18 at
>         22:38 +0800,
>         >         Wilson Kwok
>         >         >                         wrote:
>         >         >                         > Anyone can help ?
>         >         >                         >
>         >         >                         > 2015-05-18 0:03 GMT
>         +08:00 Wilson
>         >         Kwok
>         >         >                         <leiw324 at gmail.com>:
>         >         >                         >         Hello all,
>         >         >                         >
>         >         >                         >
>         >         >                         >         I have Neutron
>         router of
>         >         two
>         >         >                         interfaces DOWN problem,
>         below is
>         >         >                         >         my home lab
>         simple diagram
>         >         and
>         >         >                         attached the Network
>         Topology:
>         >         >                         >
>         >         >                         >
>         >         >                         >         Home Subnet =
>         >         172.28.0.0/16
>         >         >                         >
>         >         >                         >
>         >         >                         >         Openstack host
>         computer =
>         >         >                         172.28.0.150
>         >         >                         >
>         >         >                         >
>         >         >                         >         I created
>         Neutron home
>         >         network =
>         >         >                         172.28.0.0/16
>         >         >                         >
>         >         >                         >
>         >         >                         >         Neutron router =
>         extneral
>         >         >                         gateway(DOWN):
>         172.28.0.200 and
>         >         >                         >         internat
>         gateway(DOWN):
>         >         192.168.0.1
>         >         >                         >
>         >         >                         >
>         >         >                         >         I created
>         Neutron instance
>         >         network =
>         >         >                         192.168.0.0/24
>         >         >                         >
>         >         >                         >
>         >         >                         >         Is my network
>         settings
>         >         problem? and
>         >         >                         I already assigned
>         >         >                         >         Floating IP for
>         instance
>         >         that wanna
>         >         >                         Openstack host computer
>         >         >                         >         can ping
>         instance, what
>         >         can I do?
>         >         >                         >
>         >         >                         >
>         >         >                         >         Thanks
>         >         >                         >
>         >         >                         >
>         >         >                         >
>         >         >
>         >         >                         >
>         >         >
>         >          _______________________________________________
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>         >         >
>         >         >
>         >         >
>         >         >
>         >
>         >
>         >
>         >
>         
>         
> 
> 





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