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Date: Tue, 22 Feb 2011 22:06:15 -0800
Message-ID: <AANLkTimzDH8SRW1vTCko3mC9ZsTdNX+qkOn0fV5EPkxs@mail.gmail.com>
Subject: Re: Cassandra nodes on EC2 in two different regions not communicating
From: Dave Viner <daveviner@gmail.com>
To: user@cassandra.apache.org
Cc: Himanshi Sharma <himanshi.sharma@tcs.com>
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If you login to one of the nodes, can you telnet to port 7000 on the other
node?

If not, then almost certainly it's a firewall/Security Group issue.

You can find out the security groups for any node by logging in, and then
running:

% curl "http://169.254.169.254/latest/meta-data/security-groups"

Assuming that both nodes are in the same security group, ensure that the SG
is configured to allow other members of the SG to communicate on port 7000
to each other.

HTH,
Dave Viner


On Tue, Feb 22, 2011 at 8:59 PM, Himanshi Sharma <himanshi.sharma@tcs.com>wrote:

>
> Hi,
>
> I am new to Cassandra. I m running Cassandra on EC2. I configured Cassandra
> cluster on two instances in different regions.
> But when I am trying the nodetool command with ring option, I am getting
> only single node.
>
> How to make these two nodes communicate with each other. I have already
> opened required ports. i.e 7000, 8080, 9160 in respective
> security groups. Plz help me with this.
>
> Regards,
> Himanshi Sharma
>
>
> =====-----=====-----=====
> Notice: The information contained in this e-mail
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> and/or attachments to it are strictly prohibited. If
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> please notify us by reply e-mail or telephone and
> immediately and permanently delete the message
> and any attachments. Thank you
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>

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If you login to one of the nodes, can you telnet to port 7000 on the other =
node?<div><br></div><div>If not, then almost certainly it&#39;s a firewall/=
Security Group issue.</div><div><br></div><div>You can find out the securit=
y groups for any node by logging in, and then running:</div>
<div><br></div><div>%=A0curl &quot;<a href=3D"http://169.254.169.254/latest=
/meta-data/security-groups">http://169.254.169.254/latest/meta-data/securit=
y-groups</a>&quot;</div><div><br></div><div>Assuming that both nodes are in=
 the same security group, ensure that the SG is configured to allow other m=
embers of the SG to communicate on port 7000 to each other.</div>
<div><br></div><div>HTH,</div><div>Dave Viner</div><div><br></div><div><br>=
<div class=3D"gmail_quote">On Tue, Feb 22, 2011 at 8:59 PM, Himanshi Sharma=
 <span dir=3D"ltr">&lt;<a href=3D"mailto:himanshi.sharma@tcs.com">himanshi.=
sharma@tcs.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">
<br><font size=3D"2" face=3D"sans-serif">Hi,</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">I am new to Cassandra. I m running=
 Cassandra
on EC2. I configured Cassandra cluster on two instances in different region=
s.</font>
<br><font size=3D"2" face=3D"sans-serif">But when I am trying the nodetool =
command
with ring option, I am getting only single node. </font>
<br>
<br><font size=3D"2" face=3D"sans-serif">How to make these two nodes commun=
icate
with each other. I have already opened required ports. i.e 7000, 8080,
9160 in respective </font>
<br><font size=3D"2" face=3D"sans-serif">security groups. Plz help me with =
this.</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Regards,</font>
<br><font size=3D"2" face=3D"sans-serif">Himanshi Sharma</font>
<br>
<br>
<br><pre style=3D"white-space:normal">=3D=3D=3D=3D=3D-----=3D=3D=3D=3D=3D--=
---=3D=3D=3D=3D=3D<br>Notice: The information contained in this e-mail<br>m=
essage and/or attachments to it may contain <br>confidential or privileged =
information. If you are <br>
not the intended recipient, any dissemination, use, <br>review, distributio=
n, printing or copying of the <br>information contained in this e-mail mess=
age <br>and/or attachments to it are strictly prohibited. If <br>you have r=
eceived this communication in error, <br>
please notify us by reply e-mail or telephone and <br>immediately and perma=
nently delete the message <br>and any attachments. Thank you<br><br><br></p=
re></blockquote></div><br></div>

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