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 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 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 --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




[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 |
+--------------------------------------+--------+——————————————————————————+

[root@lspal117 ~(keystone_admin)]# neutron subnet-list
+--------------------------------------+------+----------------+----------------------------------------------------+
| id                                   | name | cidr           | allocation_pools                                   |
+--------------------------------------+------+----------------+----------------------------------------------------+
| 24f385ad-bfeb-4c62-91ff-ab8756d3983b | vlan | 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>
Date: Friday, January 9, 2015 at 2:30 PM
To: SAP SAP <rushi.ns@sap.com>, rdo-list <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 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 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.

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_initial-external-network.html



On Fri, Jan 9, 2015 at 10:52 PM, Ns, Rushi <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 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 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 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 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 |
| d825e820-66e5-44b1-a91d-0c660aa822a5 | private | f0fc905d-ad3b-4ba6-8094-bf4dbbc55cd9 10.0.0.0/24     |
| 6eb6d123-8fec-4984-986a-5eeabf895883 | sap     | ea2b21e0-bf9f-4195-b210-b75b6f9f7943 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 | {"start": "172.24.4.226", "end": "172.24.4.238"}   |
| f0fc905d-ad3b-4ba6-8094-bf4dbbc55cd9 | private_subnet | 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  | {"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>
Date: Friday, January 9, 2015 at 1:46 PM
To: SAP SAP <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.


Tnx,
Marius

On Fri, Jan 9, 2015 at 10:22 PM, Ns, Rushi <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.

* 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.

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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