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Re: [Rdo-list] Attempt to reproduce https://github.com/beekhof/osp-ha-deploy/blob/master/HA-keepalived.md



I understand that in usual situation , creating ifcfg-br-ex and ifcfg-eth2 ( as OVS bridge and OVS port) ,
 `service network restart` should be run to make eth2 (no IP) OVS port of br-ex (any IP which belongs ext net and is available)
What bad does NetworkManager when external network provider is used ?
Disabling it,  I break routing via eth0's interfaces of cluster nodes to 10.10.10.0/24 ( ext net),
so nothing is supposed to work :-
   http://blog.oddbit.com/2014/05/28/multiple-external-networks-wit/
   http://dbaxps.blogspot.com/2015/10/multiple-external-networks-with-single.html
Either I am missing something here.
________________________________________
From: rdo-list-bounces redhat com <rdo-list-bounces redhat com> on behalf of Boris Derzhavets <bderzhavets hotmail com>
Sent: Friday, November 13, 2015 1:09 PM
To: Javier Pena
Cc: rdo-list redhat com
Subject: [Rdo-list] Attempt to reproduce https://github.com/beekhof/osp-ha-deploy/blob/master/HA-keepalived.md

Working on this task I was able to build 3 node HAProxy/Keepalived  Controller's cluster , create compute node , launch CirrOS VM,
However, I cannot ping floating IP of VM running on compute ( total 4 CentOS 7.1 VMs, nested kvm enabled )
Looks like provider external networks  doesn't work for me.

But , to have eth0 without IP (due to `ovs-vsctl add-port br-eth0 eth0 ) still allowing to ping 10.10.10.1,
I need NetworkManager active, rather then network.service

[root hacontroller1 network-scripts]# systemctl status NetworkManager
NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled)
   Active: active (running) since Fri 2015-11-13 20:39:21 MSK; 12min ago
 Main PID: 808 (NetworkManager)
   CGroup: /system.slice/NetworkManager.service
           ├─ 808 /usr/sbin/NetworkManager --no-daemon
           └─2325 /sbin/dhclient -d -q -sf /usr/libexec/nm-dhcp-helper -pf /var/run/dhclient-eth0...

Nov 13 20:39:22 hacontroller1.example.com NetworkManager[808]: <info>  NetworkManager state is n...L
Nov 13 20:39:22 hacontroller1.example.com dhclient[2325]: bound to 10.10.10.216 -- renewal in 1...s.
Nov 13 20:39:22 hacontroller1.example.com NetworkManager[808]: <info>  (eth0): Activation: succe....
Nov 13 20:39:25 hacontroller1.example.com NetworkManager[808]: <info>  startup complete

[root hacontroller1 network-scripts]# systemctl status network.service
network.service - LSB: Bring up/down networking
   Loaded: loaded (/etc/rc.d/init.d/network)
   Active: inactive (dead)

[root hacontroller1 network-scripts]# cat ifcfg-eth0
TYPE="Ethernet"
BOOTPROTO="static"
NAME="eth0"
DEVICE=eth0
ONBOOT="yes"

[root hacontroller1 network-scripts]# ping -c 3 10.10.10.1
PING 10.10.10.1 (10.10.10.1) 56(84) bytes of data.
64 bytes from 10.10.10.1: icmp_seq=1 ttl=64 time=0.087 ms
64 bytes from 10.10.10.1: icmp_seq=2 ttl=64 time=0.128 ms
64 bytes from 10.10.10.1: icmp_seq=3 ttl=64 time=0.117 ms

--- 10.10.10.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.087/0.110/0.128/0.021 ms

If I disable NetworkManager and enable network this feature will be lost. Eth0 would have to have static IP or dhcp lease,
to provide route to 10.10.10.0/24.

Thank you.
Boris.


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