neutron

Able to ping VM's fixed ip's from network node, not from controller node

Asked by Ashok kumaran B

Hi,

i have a 3 node setup (controller,network and compute). i am able to launch instances and instances are getting fixed dhcp ip's no issues on that part. But i am unable to ping those fixed vm ip's from controller node except the gateway ip(50.50.1.1) in that subnet. i have already added a route for that subnet(50.50.1.0/24) through router gateway. Also Nat'ed ip's also doesnt seem to be pinging.

all iptables Nat rules looks good. i am wondering what could be the problem. please let me know what log is needed.

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Ashok kumaran B
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Ashok kumaran B (ashokkumaran-b) said : 		#1

I figured out some configuration issue and solved the problem. sorry

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Jorge (jluzuria2001) said : 		#2

Hello Ashok, How you solve this problem, what configuration file you touch?
Thanks in advance.

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Ashok kumaran B (ashokkumaran-b) said : 		#3

Jorge add the security rule for icmp in access security group . I guess that's the change I have done let me know if that helps

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Jorge (jluzuria2001) said : 		#4

Yes, I have configured the rule to security group, I tried with:
    nova secgroup-add-rule default tcp 22 22 0.0.0.0/0
    nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0
But I continue with the same problem
My instance has:
vmnet=10.0.0.10
but I can't access to them:
$ ping 10.0.0.10
From 10.0.0.254 icmp_seq=1 Destination Host Unreachable
100% packet loss

In your oppinion that suggest me..

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Ashok kumaran B (ashokkumaran-b) said : 		#5

strange!!
can you confirm me if you have added the route(in the controller node) for your vm private network through the router gateway.?

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Jorge (jluzuria2001) said : 		#6

the routes are:
Destino Pasarela Genmask Indic Métric Ref Uso Interfaz
0.0.0.0 10.0.2.2 0.0.0.0 UG 100 0 0 eth0
10.0.0.0 0.0.0.0 255.255.255.192 U 0 0 0 br100
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

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Ashok kumaran B (ashokkumaran-b) said : 		#8

your controller node seems missing the route
add a route like below in your controller node

route add -net 10.0.0.0/24 gw $router_gateway

I assume 10.0.0.0/24 is your vm network , if not so add the correct subnet, and also specify your router gateway ip

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Jorge (jluzuria2001) said : 		#9

This route is the same that you mentioned:

ip route show
10.0.0.0/26 dev br100 proto kernel scope link src 10.0.0.1

ip route -n
10.0.0.0 0.0.0.0 255.255.255.192 U 0 0 0 br100

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Ashok kumaran B (ashokkumaran-b) said : 		#10

10.0.2.2 is the router's IP of your external subnet?

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Jorge (jluzuria2001) said : 		#11

yes, Its correct.

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Venkata Seshadri (seshu9398) said : 		#12

yes,can i get this exact solution i did all the things above and agiin the same problem