I am trying find information about vmware multicast
problems. But on tcpdump I see multicas traffic from
remote end. I can't confirm if packet arrive as should be.
Slava.
From:
"Digimer"
<lists@xxxxxxxxxx>
To: "Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
Cc: discuss@xxxxxxxxxxxx
Sent: Saturday, November 23, 2013 11:54:55 PM
Subject: Re: information request
If I recall correctly, VMWare doesn't do multicast
properly. I'm not
sure though, I don't use it.
Try unicast with no RRP. See if that works.
On 23/11/13 23:16, Slava Bendersky wrote:
> Hello Digimer,
> All machines are rhel 6.4 based on vmware , there not
physical switch
> only from vmware. I set rrp to none and cluster is
formed.
> With this config I am getting constant error
messages.
>
> [root@eusipgw01 ~]# cat /etc/redhat-release
> Red Hat Enterprise Linux Server release 6.4
(Santiago)
>
> [root@eusipgw01 ~]# rpm -qa | grep corosync
> corosync-1.4.1-15.el6.x86_64
> corosynclib-1.4.1-15.el6.x86_64
>
>
> [2013-11-23 22:46:20] WARNING[2057] res_corosync.c:
CPG mcast failed (6)
> [2013-11-23 22:46:20] WARNING[2057] res_corosync.c:
CPG mcast failed (6)
>
> iptables
>
> -A INPUT -i eth1 -p udp -m state --state NEW -m udp
--dport 5404:5407 -j
> NFLOG --nflog-prefix "dmz_ext2fw: " --nflog-group 2
> -A INPUT -i eth1 -m pkttype --pkt-type multicast -j
NFLOG
> --nflog-prefix "dmz_ext2fw: " --nflog-group 2
> -A INPUT -i eth1 -m pkttype --pkt-type unicast -j
NFLOG --nflog-prefix
> "dmz_ext2fw: " --nflog-group 2
> -A INPUT -i eth1 -p igmp -j NFLOG --nflog-prefix
"dmz_ext2fw: "
> --nflog-group 2
> -A INPUT -j ACCEPT
>
>
>
------------------------------------------------------------------------
> *From: *"Digimer"
<lists@xxxxxxxxxx>
> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
> *Cc: *discuss@xxxxxxxxxxxx
> *Sent: *Saturday, November 23, 2013 10:34:00 PM
> *Subject: *Re: information request
>
> I don't think you ever said what OS you have. I've
never had to set
> anything in sysctl.conf on RHEL/CentOS 6. Did you try
disabling RRP
> entirely? If you have a managed switch, make sure
persistent multicast
> groups are enabled or try a different switch
entirely.
>
> *Something* is interrupting your network traffic.
What does
> iptables-save show? Are these physical or virtual
machines?
>
> The more information about your environment that you
can share, the
> better we can help.
>
> On 23/11/13 22:29, Slava Bendersky wrote:
>> Hello Digimer,
>> As an idea, might be some settings in sysctl.conf
?
>>
>> Slava.
>>
>>
>>
------------------------------------------------------------------------
>> *From: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
>> *To: *"Digimer"
<lists@xxxxxxxxxx>
>> *Cc: *discuss@xxxxxxxxxxxx
>> *Sent: *Saturday, November 23, 2013 10:27:22 PM
>> *Subject: *Re: information request
>>
>> Hello Digimer,
>> Yes I set to passive and selinux is disabled
>>
>> [root@eusipgw01 ~]# sestatus
>> SELinux status: disabled
>> [root@eusipgw01 ~]# cat
/etc/corosync/corosync.conf
>> totem {
>> version: 2
>> token: 160
>> token_retransmits_before_loss_const: 3
>> join: 250
>> consensus: 300
>> vsftype: none
>> max_messages: 20
>> threads: 0
>> nodeid: 2
>> rrp_mode: passive
>> interface {
>> ringnumber: 0
>> bindnetaddr: 10.10.10.0
>> mcastaddr: 226.94.1.1
>> mcastport: 5405
>> }
>> }
>>
>> logging {
>> fileline: off
>> to_stderr: yes
>> to_logfile: yes
>> to_syslog: off
>> logfile: /var/log/cluster/corosync.log
>> debug: off
>> timestamp: on
>> logger_subsys {
>> subsys: AMF
>> debug: off
>> }
>> }
>>
>>
>> Slava.
>>
>>
------------------------------------------------------------------------
>> *From: *"Digimer"
<lists@xxxxxxxxxx>
>> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
>> *Cc: *"Steven Dake"
<sdake@xxxxxxxxxx>,
discuss@xxxxxxxxxxxx
>> *Sent: *Saturday, November 23, 2013 7:04:43 PM
>> *Subject: *Re: information request
>>
>> First up, I'm not Steven. Secondly, did you
follow Steven's
>> recommendation to not use active RRP? Does the
cluster form with no RRP
>> at all? Is selinux enabled?
>>
>> On 23/11/13 18:29, Slava Bendersky wrote:
>>> Hello Steven,
>>> In multicast it log filling with this message
>>>
>>> Nov 24 00:26:28 corosync [TOTEM ] A processor
failed, forming new
>>> configuration.
>>> Nov 24 00:26:28 corosync [TOTEM ] A processor
joined or left the
>>> membership and a new membership was formed.
>>> Nov 24 00:26:31 corosync [CPG ] chosen
downlist: sender r(0)
>>> ip(10.10.10.1) ; members(old:2 left:0)
>>> Nov 24 00:26:31 corosync [MAIN ] Completed
service synchronization,
>>> ready to provide service.
>>>
>>> In uudp it not working at all.
>>>
>>> Slava.
>>>
>>>
>>>
------------------------------------------------------------------------
>>> *From: *"Digimer"
<lists@xxxxxxxxxx>
>>> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
>>> *Cc: *"Steven Dake"
<sdake@xxxxxxxxxx>,
discuss@xxxxxxxxxxxx
>>> *Sent: *Saturday, November 23, 2013 6:05:56
PM
>>> *Subject: *Re: information request
>>>
>>> So multicast works with the firewall
disabled?
>>>
>>> On 23/11/13 17:28, Slava Bendersky wrote:
>>>> Hello Steven,
>>>> I disabled iptables and no difference,
error message the same, but at
>>>> least in multicast is wasn't generate the
error.
>>>>
>>>>
>>>> Slava.
>>>>
>>>>
------------------------------------------------------------------------
>>>> *From: *"Digimer"
<lists@xxxxxxxxxx>
>>>> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>, "Steven Dake"
>>>>
<sdake@xxxxxxxxxx>
>>>> *Cc: *discuss@xxxxxxxxxxxx
>>>> *Sent: *Saturday, November 23, 2013
4:37:36 PM
>>>> *Subject: *Re: information
request
>>>>
>>>> Does either mcast or unicast work if you
disable the firewall? If so,
>>>> then at least you know for sure that
iptables is the problem.
>>>>
>>>> The link here shows the iptables rules I
use (for corosync in mcast and
>>>> other apps):
>>>>
>>>>
https://alteeve.ca/w/AN!Cluster_Tutorial_2#Configuring_iptables
>>>>
>>>> digimer
>>>>
>>>> On 23/11/13 16:12, Slava Bendersky wrote:
>>>>> Hello Steven,
>>>>> Than what I see when setup through
UDPU
>>>>>
>>>>> Nov 23 22:08:13 corosync [MAIN ]
Compatibility mode set to whitetank.
>>>>> Using V1 and V2 of the
synchronization engine.
>>>>> Nov 23 22:08:13 corosync [TOTEM ]
adding new UDPU member {10.10.10.1}
>>>>> Nov 23 22:08:16 corosync [MAIN ]
Totem is unable to form a cluster
>>>>> because of an operating system or
network fault. The most common cause
>>>>> of this message is that the local
firewall is configured improperly.
>>>>>
>>>>>
>>>>> Might be missing some firewall rules
? I allowed unicast.
>>>>>
>>>>> Slava.
>>>>>
>>>>>
>
------------------------------------------------------------------------
>>>>> *From: *"Steven Dake"
<sdake@xxxxxxxxxx>
>>>>> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>
>>>>> *Cc: *discuss@xxxxxxxxxxxx
>>>>> *Sent: *Saturday, November 23, 2013
10:33:31 AM
>>>>> *Subject: *Re: information
request
>>>>>
>>>>>
>>>>> On 11/23/2013 08:23 AM, Slava
Bendersky wrote:
>>>>>
>>>>> Hello Steven,
>>>>>
>>>>> My setup
>>>>>
>>>>> 10.10.10.1 primary server
-----EoIP tunnel vpn ipsec ----- dr
> server
>>>>> 10.10.10.2
>>>>>
>>>>> On both servers is 2 interfaces
eth0 which default gw out and eth1
>>>>> where corosync live.
>>>>>
>>>>> Iptables:
>>>>>
>>>>> -A INPUT -i eth1 -p udp -m state
--state NEW -m udp --dport
>> 5404:5407
>>>>> -A INPUT -i eth1 -m pkttype
--pkt-type multicast
>>>>> -A INPUT -i eth1 -p igmp
>>>>>
>>>>>
>>>>> Corosync.conf
>>>>>
>>>>> totem {
>>>>> version: 2
>>>>> token: 160
>>>>>
token_retransmits_before_loss_const: 3
>>>>> join: 250
>>>>> consensus: 300
>>>>> vsftype: none
>>>>> max_messages: 20
>>>>> threads: 0
>>>>> nodeid: 2
>>>>> rrp_mode: active
>>>>> interface {
>>>>> ringnumber: 0
>>>>> bindnetaddr:
10.10.10.0
>>>>> mcastaddr:
226.94.1.1
>>>>> mcastport: 5405
>>>>> }
>>>>> }
>>>>>
>>>>> Join message
>>>>>
>>>>> [root@eusipgw01 ~]#
corosync-objctl | grep member
>>>>>
runtime.totem.pg.mrp.srp.members.2.ip=r(0) ip(10.10.10.2)
>>>>>
runtime.totem.pg.mrp.srp.members.2.join_count=1
>>>>>
runtime.totem.pg.mrp.srp.members.2.status=joined
>>>>>
runtime.totem.pg.mrp.srp.members.1.ip=r(0) ip(10.10.10.1)
>>>>>
runtime.totem.pg.mrp.srp.members.1.join_count=254
>>>>>
runtime.totem.pg.mrp.srp.members.1.status=joined
>>>>>
>>>>> Is it possible that ping sends
out of wrong interface ?
>>>>>
>>>>> Slava,
>>>>>
>>>>> I wouldn't expect so.
>>>>>
>>>>> Which version?
>>>>>
>>>>> Have you tried udpu instead? If not,
it is preferable to multicast
>>>>> unless you want absolute performance
on cpg groups. In most cases the
>>>>> performance difference is very small
and not worth the trouble of
>>>>> setting up multicast in your network.
>>>>>
>>>>> Fabio had indicated rrp active mode
is broken. I don't know the
>>>>> details, but try passive RRP - it is
actually better then active
>>> IMNSHO :)
>>>>>
>>>>> Regards
>>>>> -steve
>>>>>
>>>>> Slava.
>>>>>
>>>>>
>>>>
------------------------------------------------------------------------
>>>>> *From: *"Steven Dake"
<sdake@xxxxxxxxxx>
>>>>> *To: *"Slava Bendersky"
<volga629@xxxxxxxxxxxxx>,
>>>
discuss@xxxxxxxxxxxx
>>>>> *Sent: *Saturday, November 23,
2013 6:01:11 AM
>>>>> *Subject: *Re:
information request
>>>>>
>>>>>
>>>>> On 11/23/2013 12:29 AM, Slava
Bendersky wrote:
>>>>>
>>>>> Hello Everyone,
>>>>> Corosync run on box with 2
Ethernet interfaces.
>>>>> I am getting this message
>>>>> CPG mcast failed (6)
>>>>>
>>>>> Any information thank you in
advance.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
https://github.com/corosync/corosync/blob/master/include/corosync/corotypes.h#L84
>>>>>
>>>>> This can occur because:
>>>>> a) firewall is enabled - there
should be something in the logs
>>>>> telling you to properly configure
the firewall
>>>>> b) a config change is in progress
- this is a normal response, and
>>>>> you should try the request again
>>>>> c) a bug in the synchronization
code is resulting in a blocked
>>>>> unsynced cluster
>>>>>
>>>>> c is very unlikely at this point.
>>>>>
>>>>> 2 ethernet interfaces = rrp mode,
bonding, or something else?
>>>>>
>>>>> Digimer needs moar infos :)
>>>>>
>>>>> Regards
>>>>> -steve
>>>>>
>>>>>
>>>>>
>>>>>
_______________________________________________
>>>>> discuss mailing list
>>>>>
discuss@xxxxxxxxxxxx
>>>>>
http://lists.corosync.org/mailman/listinfo/discuss
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
_______________________________________________
>>>>> discuss mailing list
>>>>>
discuss@xxxxxxxxxxxx
>>>>>
http://lists.corosync.org/mailman/listinfo/discuss
>>>>>
>>>>
>>>>
>>>> --
>>>> Digimer
>>>> Papers and Projects:
https://alteeve.ca/w/
>>>> What if the cure for cancer is trapped in
the mind of a person without
>>>> access to education?
>>>>
>>>
>>>
>>> --
>>> Digimer
>>> Papers and Projects:
https://alteeve.ca/w/
>>> What if the cure for cancer is trapped in the
mind of a person without
>>> access to education?
>>>
>>
>>
>> --
>> Digimer
>> Papers and Projects:
https://alteeve.ca/w/
>> What if the cure for cancer is trapped in the
mind of a person without
>> access to education?
>>
>>
>> _______________________________________________
>> discuss mailing list
>>
discuss@xxxxxxxxxxxx
>>
http://lists.corosync.org/mailman/listinfo/discuss
>>
>
>
> --
> Digimer
> Papers and Projects:
https://alteeve.ca/w/
> What if the cure for cancer is trapped in the mind of
a person without
> access to education?
>
--
Digimer
Papers and Projects:
https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a
person without
access to education?
