Openstack VMmachine internet connectivity issue

Bhartendu bhartendu at gmail.com
Sat Aug 8 07:00:51 UTC 2020


Hi All,

I need help or any pointer to solve Openstack VM machine internet
connectivity issue. I am successfully able to create VM machines on
Openstack cloud.



Facing following Openstack VM machine internet connectivity issues:



1) There is no internet connectivity from Openstack VM machine.

2) ping is successful till  Openstack machine (192.168.0.166), but Gateway
ip (192.168.0.1) not reachable from Openstack VM machine.

3) No website reachable from Openstack VM machine.

Openstack is installed on Virtualbox VM machine (CentOS 8.2).

Connectivity information:
Internet<=====>Router(192.168.0.1)<=====>Oracle VM machine (CentOS 8.2;
192.168.0.166)<=====>Openstack VM Machine (192.168.0.174)

Any help or trigger is much appreciated.

-----------------------------------------------
Openstack VM Machine (192.168.0.174) Logs
-----------------------------------------------
$ ip route
default via 192.168.0.1 dev eth0
169.254.169.254 via 192.168.0.171 dev eth0
192.168.0.0/24 dev eth0 scope link  src 192.168.0.174
$ ping 192.168.0.166
PING 192.168.0.166 (192.168.0.166): 56 data bytes
64 bytes from 192.168.0.166: seq=0 ttl=64 time=2.657 ms
64 bytes from 192.168.0.166: seq=1 ttl=64 time=1.196 ms
64 bytes from 192.168.0.166: seq=2 ttl=64 time=1.312 ms
64 bytes from 192.168.0.166: seq=3 ttl=64 time=0.875 ms
64 bytes from 192.168.0.166: seq=4 ttl=64 time=0.782 ms
^C
--- 192.168.0.166 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 0.782/1.364/2.657 ms
$ ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1): 56 data bytes
^C
--- 192.168.0.1 ping statistics ---
3 packets transmitted, 0 packets received, 100% packet loss
$ ping google.com
ping: bad address 'google.com'
$
$ sudo cat /etc/resolv.conf
nameserver 192.168.0.1
nameserver 192.168.0.166
nameserver 8.8.8.8
$
$ ip route
default via 192.168.0.1 dev eth0
169.254.169.254 via 192.168.0.171 dev eth0
192.168.0.0/24 dev eth0 scope link  src 192.168.0.174
$
$ ifconfig
eth0      Link encap:Ethernet  HWaddr FA:16:3E:17:F2:F9
          inet addr:192.168.0.174  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::f816:3eff:fe17:f2f9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:572 errors:0 dropped:0 overruns:0 frame:0
          TX packets:571 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:51697 (50.4 KiB)  TX bytes:46506 (45.4 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:35 errors:0 dropped:0 overruns:0 frame:0
          TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3764 (3.6 KiB)  TX bytes:3764 (3.6 KiB)

$

-----------------------------------------------------
Oracle VM machine (CentOS 8.2; 192.168.0.166) Logs
-----------------------------------------------------

[root at openstack ~]# ovs-vsctl show
6718c4ce-6a58-463c-95e4-20a34edbe041
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br-int
        fail_mode: secure
        datapath_type: system
        Port br-int
            Interface br-int
                type: internal
        Port "tap50a66e3f-00"
            Interface "tap50a66e3f-00"
        Port "patch-br-int-to-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1"
            Interface
"patch-br-int-to-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1"
                type: patch
                options:
{peer="patch-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1-to-br-int"}
        Port "tap6ea42aaf-80"
            Interface "tap6ea42aaf-80"
        Port "tap743cdf36-c8"
            Interface "tap743cdf36-c8"
        Port "tap2a93518d-90"
            Interface "tap2a93518d-90"
    Bridge br-ex
        fail_mode: standalone
        Port "patch-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1-to-br-int"
            Interface
"patch-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1-to-br-int"
                type: patch
                options:
{peer="patch-br-int-to-provnet-27804412-47c0-497d-8f2e-8c0bf8b04df1"}
        Port br-ex
            Interface br-ex
                type: internal
        Port "enp0s3"
            Interface "enp0s3"
    ovs_version: "2.12.0"
[root at openstack ~]# ip a s enp0s3
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master
ovs-system state UP group default qlen 1000
    link/ether 08:00:27:cd:fc:4f brd ff:ff:ff:ff:ff:ff
[root at openstack ~]# ip a s br-ex
13: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN group default qlen 1000
    link/ether 08:00:27:cd:fc:4f brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.166/24 brd 192.168.0.255 scope global br-ex
       valid_lft forever preferred_lft forever
    inet6 fe80::f057:6bff:fe69:1f47/64 scope link
       valid_lft forever preferred_lft forever
[root at openstack ~]#
[root at openstack ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search example.com
nameserver 192.168.0.1
nameserver 8.8.8.8
[root at openstack ~]#
[root at openstack ~]# ip route
default via 192.168.0.1 dev br-ex
169.254.0.0/16 dev br-ex scope link metric 1013
192.168.0.0/24 dev br-ex proto kernel scope link src 192.168.0.166
[root at openstack ~]#
[root at openstack ~]# ifconfig
br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.166  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::f057:6bff:fe69:1f47  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:cd:fc:4f  txqueuelen 1000  (Ethernet)
        RX packets 2781  bytes 505203 (493.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1441  bytes 159474 (155.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 08:00:27:cd:fc:4f  txqueuelen 1000  (Ethernet)
        RX packets 94856  bytes 111711956 (106.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 33859  bytes 15114156 (14.4 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1741807  bytes 441610166 (421.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1741807  bytes 441610166 (421.1 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

tap2a93518d-90: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::681d:e6ff:fe1d:963f  prefixlen 64  scopeid 0x20<link>
        ether 6a:1d:e6:1d:96:3f  txqueuelen 1000  (Ethernet)
        RX packets 55  bytes 6540 (6.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2950  bytes 916693 (895.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

tap50a66e3f-00: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1442
        ether fe:16:3e:06:df:bf  txqueuelen 1000  (Ethernet)
        RX packets 689  bytes 59074 (57.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 703  bytes 58933 (57.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

tap6ea42aaf-80: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::745b:6aff:fe1c:d270  prefixlen 64  scopeid 0x20<link>
        ether 76:5b:6a:1c:d2:70  txqueuelen 1000  (Ethernet)
        RX packets 63  bytes 7332 (7.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 126  bytes 10692 (10.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

tap743cdf36-c8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether fe:16:3e:17:f2:f9  txqueuelen 1000  (Ethernet)
        RX packets 1005  bytes 91770 (89.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3555  bytes 902987 (881.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root at openstack ~]#

Thanks & Regards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20200808/2e1c5699/attachment-0001.html>


More information about the openstack-discuss mailing list