Re: [Rdo-list] networking issues on JUNO redhead openstack.

Monday, 12 January 2015

HI Marius

I cannot run tcpdump on the VM’  as it appear it doenst have the package ? I have the same
problem on the 3 images that I have instances (cirros, suse , redhat) I am assuming
something was not right on the network for tenant ?

Can you help me . Is is possible if I send you my LYNC share  so that I can show the
screen ?

Also I don’t see any router in Tenant (demo user) network ? Is that required like below
point 3
I am reading all these from redhat ? Is there something that is not correct in my
configuration?

  *   I can create an instance, but cannot SSH or ping it
     *   1) Verify that traffic to port 22 and ICMP traffic of any type (-1:-1) is allowed
in the default security groupIn the dashboard, in the Project tab, under "Access and
Security", check the rules which are active on the security group you are using with
your instances (typically "default"). You should see a rule allowing traffic to
port 22 over tcp from all hosts, and a port enabling icmp traffic of all types (-1). If
you don't, create the necessary rules, and try again.

     *   2) Verify that you can ping and SSH the host where the instance is runningFrom
the host where you are attempting to connect to your instance, verify that network traffic
is being correctly routed to the compute node in question.

     *   3) Ensure that the router is correctly created, that the internal subnet and
external subnet are attached to it, and that it can route traffic from your IP to the
instance IPIf your VM is in the 192.168.1.x subnet, and the host from which you are trying
to connect is in the 192.168.0.x subnet, then you will need to have a route from one to
the other. Ensure that the subnet 192.168.1.x and 192.168.0.x are both added to a router
which you create in Neutron

     *   4) Check that you can ping an instance from inside its network namespace.If you
are using network namespaces, then each VLAN will have its own namespace, and entities
inside that namespace will be invisible from outside. You can check whether you can ping
an instance from inside the namespace by first finding the namespace identifier, and then
using the iproute toolset to execute a "ping" inside that namespace:

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 6:01 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Well neutron uses iptables to implement the security groups so I'm not sure what's
the result of removing the iptables rules from the openstack host. Since the ssh
connection to 10.48.146.115 was getting a connection refused I would have checked first
the VM to see if any packets reach its interface. You could do that by 'tcpdump -i
{interface_name}' inside the VM.

On Sat, Jan 10, 2015 at 2:44 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
By the way, My openstack host is : REDHAT7 ? Do you think is there any settings on sshd
preventing to connet to VM (to check to see this VM’’ ssh ? )

I did checked and making sure iptables off on the openstack host ?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 5:31 PM

To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

I did verified on the VM.,

No fiewall enable (this is suse create with SUSE Studio)
SSH is listening on the VM and I can ssh to the local host

[cid:3DBCBF54-A0DD-43A7-A793-4E902C409617]

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 5:23 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

I see that you get a 'connection refused' message which means that the VM
responds. Is the ssh service running on the VM or is there any firewall on the VM that
might prevent connectivity? You could run tcpdump inside the VM to see if any of your
packets reach it.

On Sat, Jan 10, 2015 at 2:18 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Here are my allowed port list but I can’t ping or I can’t ssh ?

[cid:81EE88AC-CCAA-4B7B-A380-CF9DCAE5702F]

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 5:17 PM

To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Here is the console, I can ping gateway of my host : 10.48.146.1 and others but I cannot
ssh to that instance from oopensetack host.

[root@lspal117 tmp(keystone_admin)]# ssh -l root -i lvmgrouplatest.pem 10.48.146.115
ssh: connect to host 10.48.146.115 port 22: Connection refused

[root@lspal117 tmp(keystone_admin)]# ssh -l root -i lvmgrouplatest.pem 192.168.1.4

[cid:9B3B10A4-4C8D-472C-9B21-C82D718CC6E0]

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 5:12 PM
To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Hi Marius,

Sorry I can assign the floating ip to the instnace (demo user launched insetance) ,
however I cannot ping or ssh to the instances (192.168.1.4/<http://192.168.1.4/>
10.48.146.115) from the host but from the instance (192.168.1.2) I can ping other instance
192.168.1.4 ?

Can you help in this final step what is missing >

[cid:0E7F5284-9B90-46DA-B1CE-824110D267B8]

root@lspal117 tmp(keystone_admin)]# neutron port-list
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| id                                   | name | mac_address       | fixed_ips             
                                                              |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| 1939479b-78d7-4d7a-94da-006ef732e6d7 |      | fa:16:3e:61:95:bd |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.2"}   |
| 1986b9ae-543d-4f01-8f5a-ccf05bed3141 |      | fa:16:3e:64:da:11 |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.1"}   |
| 4706b287-d019-4b74-a8b6-e2e9f37eb74c |      | fa:16:3e:25:2f:46 |
{"subnet_id": "8b285f3a-ad73-4d2b-8e1e-dd59af16c463",
"ip_address": "10.48.146.114"} |
| 65d568f4-d737-4f35-ab47-13042e3b6733 |      | fa:16:3e:c9:dd:a9 |
{"subnet_id": "8b285f3a-ad73-4d2b-8e1e-dd59af16c463",
"ip_address": "10.48.146.115"} |
| 863e8fbc-5be4-408d-9945-3fb35dbd2052 |      | fa:16:3e:25:73:00 |
{"subnet_id": "8b285f3a-ad73-4d2b-8e1e-dd59af16c463",
"ip_address": "10.48.146.113"} |
| c02da939-99da-44c8-b462-9da7938626ba |      | fa:16:3e:83:9e:77 |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.4"}   |
| dcaabff2-f21a-4ae0-9a1d-3a97def708e0 |      | fa:16:3e:17:84:4c |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.3"}   |

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 5:03 PM
To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Here is it

[root@lspal117 tmp(keystone_admin)]# neutron port-list
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| id                                   | name | mac_address       | fixed_ips             
                                                              |
+--------------------------------------+------+-------------------+--------------------------------------------------------------------------------------+
| 1939479b-78d7-4d7a-94da-006ef732e6d7 |      | fa:16:3e:61:95:bd |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.2"}   |
| 1986b9ae-543d-4f01-8f5a-ccf05bed3141 |      | fa:16:3e:64:da:11 |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.1"}   |
| 4706b287-d019-4b74-a8b6-e2e9f37eb74c |      | fa:16:3e:25:2f:46 |
{"subnet_id": "8b285f3a-ad73-4d2b-8e1e-dd59af16c463",
"ip_address": "10.48.146.114"} |
| 863e8fbc-5be4-408d-9945-3fb35dbd2052 |      | fa:16:3e:25:73:00 |
{"subnet_id": "8b285f3a-ad73-4d2b-8e1e-dd59af16c463",
"ip_address": "10.48.146.113"} |
| dcaabff2-f21a-4ae0-9a1d-3a97def708e0 |      | fa:16:3e:17:84:4c |
{"subnet_id": "0f5a93a6-a5f1-43a1-9a84-1ecc3aa6ac19",
"ip_address": "192.168.1.3"}   |
+--------------------------------------+------+-------------------+———————————————————————————————————————————+

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 5:02 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

What does 'neutron port-list' show ?

On Sat, Jan 10, 2015 at 1:56 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
I did that, launch instance got IP: 192.168.1.2 then I did floating_IP which I got
10.48.146.114 , however I cannot assign to the instance as there are no ports avilable.?

[cid:6447492F-6F53-4921-912B-DF3C14ECB8AA]

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 4:52 PM

To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Next launch an instance with demo-net attached. Then assign it a floating IP. You should
get 10.48.146.114 as the floating IP.

On Sat, Jan 10, 2015 at 1:50 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Thanks, I did this step . So what is next ? Sorry to bother but you are really a life
saver to me (thanks to you a ton) as well kashyap .

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 4:46 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

neutron net-create public --router:external=True
neutron subnet-create public 10.48.146.0/24<http://10.48.146.0/24> --name vlan
--enable_dhcp=False --allocation_pool start=10.48.146.113,end=10.48.146.130 --gateway
10.48.146.1

neutron net-create demo-net
neutron subnet-create demo-net --name demo-subnet --gateway 192.168.1.1
192.168.1.0/24<http://192.168.1.0/24>

neutron router-create demo-router
neutron router-interface-add demo-router demo-subnet
neutron router-gateway-set demo-router public

On Sat, Jan 10, 2015 at 1:35 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
I have deleted all network (admin) and tenant as I wanted your guidance to do further

Can you help to give steps to add the network again
(10.48.146.0/24<http://10.48.146.0/24>) and tenant
192.168.10.0/24<http://192.168.10.0/24> after floating ip to 10.48.146.113)

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 4:27 PM

To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Let's keep the troubleshooting steps on the list. What's the output of 'nova
list' ?

On Sat, Jan 10, 2015 at 1:21 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Yes, I did boot the instance but its getting 10.48.146.4 address rather 192.168.*** that
you gave me ? I can logon to the instance console 10.48.146.4 and can ping gateway
10.48.146.1 but I cannot ssh or ping from host?

Is it possible I share my screen, so that you can guide me what wrong thing that stops and
bother me ?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 4:18 PM

To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Did you boot the instance with the demo-net attached ?

On Sat, Jan 10, 2015 at 1:16 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
I can’t assign a port to the floating ip . I don’t’ see any ports available ?

[cid:CD828843-4C9C-442E-9F18-65F4084FCB55]

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 4:06 PM

To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

You've already defined router1 which is already connected to the external network. You
can use that. ext-net is the 'public' network in your case.

On Sat, Jan 10, 2015 at 1:03 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
I can’t run this command

$ neutron router-gateway-set demo-router ext-net

Its getting error (ext-net not found) ? What is the ext-net in this case ?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 3:58 PM

To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Ok I did the folowing steps for tenant.

1)   neutron net-create demo-net
 2)  neutron subnet-create demo-net --name demo-subnet --gateway 10.48.146.1
10.48.146.0/24<http://10.48.146.0/24>
 3)  neutron router-create demo-router
 4)  neutron router-interface-add demo-router demo-subnet

Anything left .?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: <Ns>, SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Date: Friday, January 9, 2015 at 3:55 PM
To: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Hi Marius,

Yes, I can ping 10.48.146.113 (gateway) from the host , can you provide the comamnds or
link to create tenant network, subjet and attach to router ?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 3:48 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Cc: rdo-list <rdo-list@redhat.com<mailto:rdo-list@redhat.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Can you ping 10.48.146.113 from your network? You also need to create a tenant network,
subnet and attach it to the router. Boot the instance with the tenant network attached and
then assign it the floating IP.

On Sat, Jan 10, 2015 at 12:20 AM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Hi Marius,

I did this first and now can see the BR-ex is the same IP as my eno1 interface , you are
right I lost first while doing the first command(ip addr del
10.48.146.77/24<http://10.48.146.77/24> dev eno1) and then conneting to console I
did the second comand (ovs-vsctl add-port br-ex eno1 and also changed the IP address of
br-ex to 10.48.146.77)

 ip addr del 10.48.146.77/24<http://10.48.146.77/24> dev eno1; ovs-vsctl add-port
br-ex eno1

Then after I removed all the routers, networks and interfaces from openstack and ran the
following 4 commands.

1) source /root/keystonerc_admin
2) neutron net-create public --router:external=True
3)   neutron subnet-create public 10.48.146.0/24<http://10.48.146.0/24> --name vlan
--enable_dhcp=False --allocation_pool start=10.48.146.113,end=10.48.146.130 --gateway
10.48.146.1
4)   neutron router-create router1
5) neutron router-gateway-set 7e07fef0-e92b-4956-9b23-82157d81ebf3
1605ac0b-4f59-473d-b20f-911c3401dc2c
 6)  neutron floatingip-create public

The above command generated a floating IP 10.48.146.115

Then I spin up a new instance and it got IP assigned automatically 10.48.146.115, howevr I
cannot ping or ssh to that ip : 10.48.146.115 ?

Here are the screenshots

[cid:964628AC-2686-40F5-B655-00EAF252B65D]

[cid:2B55990D-8C1A-445B-8C55-BF8428FCA0F2]

[root@lspal117 ~(keystone_admin)]# neutron net-list
+--------------------------------------+--------+-----------------------------------------------------+
| id                                   | name   | subnets                                 
           |
+--------------------------------------+--------+-----------------------------------------------------+
| 1605ac0b-4f59-473d-b20f-911c3401dc2c | public | 24f385ad-bfeb-4c62-91ff-ab8756d3983b
10.48.146.0/24<http://10.48.146.0/24> |
+--------------------------------------+--------+——————————————————————————+

[root@lspal117 ~(keystone_admin)]# neutron subnet-list
+--------------------------------------+------+----------------+----------------------------------------------------+
| id                                   | name | cidr           | allocation_pools         
                         |
+--------------------------------------+------+----------------+----------------------------------------------------+
| 24f385ad-bfeb-4c62-91ff-ab8756d3983b | vlan |
10.48.146.0/24<http://10.48.146.0/24> | {"start":
"10.48.146.113", "end": "10.48.146.130"} |
+--------------------------------------+------+----------------+----------------------------------------------------+

[root@lspal117 ~(keystone_admin)]# neutron router-list
+--------------------------------------+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| id                                   | name    | external_gateway_info                  

                                                       | distributed | ha    |
+--------------------------------------+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| 7e07fef0-e92b-4956-9b23-82157d81ebf3 | router1 | {"network_id":
"1605ac0b-4f59-473d-b20f-911c3401dc2c", "enable_snat": true,
"external_fixed_ips": [{"subnet_id":
"24f385ad-bfeb-4c62-91ff-ab8756d3983b", "ip_address":
"10.48.146.113"}]} | False       | False |
+--------------------------------------+---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+

Any ideas what is going wrong, I still can’t ping or ssh to that IP address and its not
listening anywhere ?

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 2:30 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>, rdo-list
<rdo-list@redhat.com<mailto:rdo-list@redhat.com>>

Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

As Kashyap kindly suggested we're not a support line and information here should be
available for all the community members. First, I don't see how you can ping the br-ex
IP address from an external network since it doesn't contain any physical interface.
Make sure that 10.48.146.112 isn't used by other host on you network segment. You can
do the following to remove the ip address from the physical interface and add it to the
br-ex bridge. Please make sure that you've got console access to the server before
doing this as you may lose connectivity.

# ip addr del 10.48.146.77/24<http://10.48.146.77/24> dev eno1; ovs-vsctl add-port
br-ex eno1

You should then follow the documentation[1] to recreate the public/tenant networks and
router. In your case FLOATING_IP_START, FLOATING_IP_END should be part of the
10.48.146.0/24<http://10.48.146.0/24> network. Let's say you wish to allocate IP
addresses of the 10.48.146.200 - 10.48.146.210 range to your Openstack routers/instances,
then FLOATING_IP_START=10.48.146.200 and FLOATING_IP_END=10.48.146.210.
EXTERNAL_NETWORK_GATEWAY should be set to what 'ip r | grep default | awk {'print
$3'}' outputs and EXTERNAL_NETWORK_CIDR is 
10.48.146.0/24<http://10.48.146.0/24>.

Note that the instance will get an IP address of the tenant network. By assigning a
floating IP you will be able to access it through an IP address from your physical network
segment.

[1]
http://docs.openstack.org/juno/install-guide/install/yum/content/neutron_...

On Fri, Jan 9, 2015 at 10:52 PM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Hi Marius,

Here are the outputs. Is it possible to reach you on phone so that I can explain more than
email. You can call me at 650 849 3915<tel:650%20849%203915> or let me know your
number.

#ip a

[root@lspal117 network-scripts(keystone_admin)]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8<http://127.0.0.1/8> scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether d8:9d:67:29:c6:94 brd ff:ff:ff:ff:ff:ff
    inet 10.48.146.77/24<http://10.48.146.77/24> brd 10.48.146.255 scope global
eno1
       valid_lft forever preferred_lft forever
    inet6 fe80::da9d:67ff:fe29:c694/64 scope link
       valid_lft forever preferred_lft forever
3: eno2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether d8:9d:67:29:c6:95 brd ff:ff:ff:ff:ff:ff
4: eno3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether d8:9d:67:29:c6:96 brd ff:ff:ff:ff:ff:ff
5: eno4: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether d8:9d:67:29:c6:97 brd ff:ff:ff:ff:ff:ff
6: ens1f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
    link/ether 38:ea:a7:8f:bf:b4 brd ff:ff:ff:ff:ff:ff
7: ens1f1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
    link/ether 38:ea:a7:8f:bf:b5 brd ff:ff:ff:ff:ff:ff
8: ens2f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
    link/ether 38:ea:a7:8f:bf:40 brd ff:ff:ff:ff:ff:ff
9: ens2f1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
    link/ether 38:ea:a7:8f:bf:41 brd ff:ff:ff:ff:ff:ff
10: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
    link/ether 16:02:ac:3f:05:f4 brd ff:ff:ff:ff:ff:ff
11: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether be:8b:24:03:a9:47 brd ff:ff:ff:ff:ff:ff
    inet 10.48.146.112/24<http://10.48.146.112/24> brd 10.48.146.255 scope global
br-ex
       valid_lft forever preferred_lft forever
    inet6 fe80::bc8b:24ff:fe03:a947/64 scope link
       valid_lft forever preferred_lft forever
12: br-int: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
    link/ether 02:35:a4:7c:e5:4c brd ff:ff:ff:ff:ff:ff
16: br-tun: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
    link/ether fe:61:30:fb:a3:47 brd ff:ff:ff:ff:ff:ff
17: qbr63bd6704-47: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP
    link/ether 8e:fe:6e:19:61:5c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::3822:bcff:fe6a:b74f/64 scope link
       valid_lft forever preferred_lft forever
18: qvo63bd6704-47: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast master ovs-system state UP qlen 1000
    link/ether a2:fe:04:5f:04:b4 brd ff:ff:ff:ff:ff:ff
19: qvb63bd6704-47: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast master qbr63bd6704-47 state UP qlen 1000
    link/ether 8e:fe:6e:19:61:5c brd ff:ff:ff:ff:ff:ff
22: tap63bd6704-47: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
master qbr63bd6704-47 state UNKNOWN qlen 500
    link/ether fe:16:3e:d9:5e:ba brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc16:3eff:fed9:5eba/64 scope link
       valid_lft forever preferred_lft forever

# ovs-vsctl show

[root@lspal117 network-scripts(keystone_admin)]# ovs-vsctl show
c5bcc161-86cd-4004-9729-c1ba05d28569
    Bridge br-ex
        Port br-ex
            Interface br-ex
                type: internal
        Port "qg-c3a1b534-36"
            Interface "qg-c3a1b534-36"
                type: internal
    Bridge br-int
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "tape386c0cb-d8"
            tag: 1
            Interface "tape386c0cb-d8"
                type: internal
        Port br-int
            Interface br-int
                type: internal
        Port "qvo63bd6704-47"
            tag: 1
            Interface "qvo63bd6704-47"
        Port "tap44dd465f-d4"
            tag: 4095
            Interface "tap44dd465f-d4"
                type: internal
        Port "qr-e0ac3c25-2b"
            tag: 2
            Interface "qr-e0ac3c25-2b"
                type: internal
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: “2.1.3"

# neutron net-list
[root@lspal117 network-scripts(keystone_admin)]# neutron net-list
+--------------------------------------+---------+------------------------------------------------------+
| id                                   | name    | subnets                                
             |
+--------------------------------------+---------+------------------------------------------------------+
| 5abe660b-52da-4d36-8275-4c1488df88b4 | public  | 79ee8c72-4c60-4b39-9b53-e6a3e9591e6a
172.24.4.224/28<http://172.24.4.224/28> |
| d825e820-66e5-44b1-a91d-0c660aa822a5 | private | f0fc905d-ad3b-4ba6-8094-bf4dbbc55cd9
10.0.0.0/24<http://10.0.0.0/24>     |
| 6eb6d123-8fec-4984-986a-5eeabf895883 | sap     | ea2b21e0-bf9f-4195-b210-b75b6f9f7943
10.48.146.0/24<http://10.48.146.0/24>  |
+--------------------------------------+---------+------------------------------------------------------+

# neutron subnet-list
[root@lspal117 network-scripts(keystone_admin)]# neutron subnet-list
+--------------------------------------+----------------+-----------------+----------------------------------------------------+
| id                                   | name           | cidr            |
allocation_pools                                   |
+--------------------------------------+----------------+-----------------+----------------------------------------------------+
| 79ee8c72-4c60-4b39-9b53-e6a3e9591e6a | public_subnet  |
172.24.4.224/28<http://172.24.4.224/28> | {"start":
"172.24.4.226", "end": "172.24.4.238"}   |
| f0fc905d-ad3b-4ba6-8094-bf4dbbc55cd9 | private_subnet |
10.0.0.0/24<http://10.0.0.0/24>     | {"start": "10.0.0.2",
"end": "10.0.0.254"}         |
| ea2b21e0-bf9f-4195-b210-b75b6f9f7943 | sap_local      |
10.48.146.0/24<http://10.48.146.0/24>  | {"start":
"10.48.146.112", "end": "10.48.146.120"} |
+--------------------------------------+----------------+-----------------+——————————————————————————+

#neutron router-list
[root@lspal117 network-scripts(keystone_admin)]# neutron router-list
+--------------------------------------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| id                                   | name    | external_gateway_info                  

                                                      | distributed | ha    |
+--------------------------------------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-------+
| d6325c88-e5b0-448e-8ab1-af5908a189d4 | router1 | {"network_id":
"5abe660b-52da-4d36-8275-4c1488df88b4", "enable_snat": true,
"external_fixed_ips": [{"subnet_id":
"79ee8c72-4c60-4b39-9b53-e6a3e9591e6a", "ip_address":
"172.24.4.226"}]} | False       | False |
+--------------------------------------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+———+

In my system I have IP address for BR-ex and ENO1 (interface connecting ), should I
disable eno1 as I can ping both (br-ex and eno1) from my network to reach to this host ?
Probably its a dump question.

Here are the outputs.

br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.48.146.112  netmask 255.255.255.0  broadcast 10.48.146.255
        inet6 fe80::bc8b:24ff:fe03:a947  prefixlen 64  scopeid 0x20<link>
        ether be:8b:24:03:a9:47  txqueuelen 0  (Ethernet)
        RX packets 10  bytes 864 (864.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 25  bytes 3767 (3.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-int: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 02:35:a4:7c:e5:4c  txqueuelen 0  (Ethernet)
        RX packets 135  bytes 7574 (7.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-tun: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether fe:61:30:fb:a3:47  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.48.146.77  netmask 255.255.255.0  broadcast 10.48.146.255
        inet6 fe80::da9d:67ff:fe29:c694  prefixlen 64  scopeid 0x20<link>
        ether d8:9d:67:29:c6:94  txqueuelen 1000  (Ethernet)
        RX packets 467319  bytes 48391354 (46.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14794  bytes 5238733 (4.9 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 32

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

From: Marius Cornea <marius@remote-lab.net<mailto:marius@remote-lab.net>>
Date: Friday, January 9, 2015 at 1:46 PM
To: SAP SAP <rushi.ns@sap.com<mailto:rushi.ns@sap.com>>
Subject: Re: [Rdo-list] networking issues on JUNO redhead openstack.

Hi Rushi,

Can you provide the output of the following commands on your node ?

# ip a
# ovs-vsctl show
# neutron net-list
# neutron subnet-list
# neutron router-list

Please note that only the br-ex bridge requires an IP address, the interface that's
part of it shouldn't have one assigned. Also the floating IP addresses will be used
for DNAT on the tenant router. You can check the documentation here[1] that describes the
use of floating IPs.

You can also check the upstream documentation[2] on how to create the networks.

[1] https://openstack.redhat.com/Difference_between_Floating_IP_and_private_IP
[2]
http://docs.openstack.org/juno/install-guide/install/yum/content/neutron_...

Tnx,
Marius

On Fri, Jan 9, 2015 at 10:22 PM, Ns, Rushi
<rushi.ns@sap.com<mailto:rushi.ns@sap.com>> wrote:
Hi Support,

I have  a problem that a launched instance  from openstack cannot connect to SSH or PING

First of all I have dump question whether my system should be NOVA network or Neutron
network. Well to keep everyone on the same page. Here is my history.

  1.  I did install RDO (allinone host) using the bellow steps 
https://openstack.redhat.com/Quickstart
  2.  Then I have used the following steps for floating IP
https://openstack.redhat.com/Floating_IP_range.

My situtation is as follows.
* Floating IP address assignment:
I have assigned a floating IP , I did follow this steps.
https://openstack.redhat.com/Floating_IP_range

* Bridge configuration:My Ethernet device eth0(actually in Redhat 7 it is eno1 name)is on
the same bridge as the compute host
Yes, ethernet device on 10.48.146.78 address and br-ex interface on 10.48.146.112

* DHCP configuration: Yes, DHCP configuration is set and Neutron hearing and responding to
DHCP
requests and the instance is getting IP from 10.48.146.113 (next hop) however I cannot
ping/ssh to that IP address (ICMP/SSH is added allowed
rule on default security group)

Here is the little diagram of my system.
[cid:EB813931-0B05-459C-A0B6-DE7C98D3D2FA]

Can someone help to find what is missing.

Best Regards,

Rushi.
Success is not a matter of being the best & winning the race. Success is a matter of
handling the worst & finishing the race

_______________________________________________
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Rdo-list@redhat.com<mailto:Rdo-list@redhat.com>
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Re: [Rdo-list] networking issues on JUNO redhead openstack.