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Accepted
DarkSkull
Asked: 2015-12-25 09:10:01 +0800 CST

Can't ping from guest CentOS 7 VM to another guest CentOS 7 VM

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I have a problem with ping VM from and to another VM that run CentOS7. The hypervisor is KVM and I control all with CloudStack. The strange thing is that I can ping from and to secondary storage vm and console proxy vm (runs debian), so I think that the problem is in the configuration of CentOS. The configuration of the network interface eth0 is like this:

TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eth0
UUID=xxxxxxxxxxxxxxxxxxxxxxx
DEVICE=eth0
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0

and the configuration of the network interface br0 is like this:

DEVICE="br0"
NM_CONTROLLED="no"
TYPE="Bridge"
BOOTPROTO="dhcp"
ONBOOT="yes"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
DELAY="0"

I reach internet and the host, but not other guest CentOS vm. what am I doing wrong? Thanks in advance.

networking

1 Answers

  1. Best Answer

    I found the solution! Cloudstack default settings cannot permit to communicate among guest vms. For do this it needs to set up the Ingress and the Egress rules of the security group :)

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