Zookeeper communication protocol

[Ankit Shah <an...@tracxn.com>]

Hi,

I need to debug the data being exchanged between my kafka consumer and
zookeeper using tcpdump. I went through the zookeeper documentation but
could not find any write up about the zookeeper communication protocol i.e
I get the following data dump using wireshark after removing headers. How
do I interpret the data part?

Frame 1: 78 bytes on wire (624 bits), 78 bytes captured (624 bits)
Ethernet II, Src: 22:00:0a:xx:xx:xx (22:00:xx:xx:xx:xx), Dst:
fe:ff:xx:xx:xx:xx (fe:ff:ff:xx:xx:xx)
Internet Protocol Version 4, Src: 10.234.xxx.xxx, Dst: 10.231.xxx.xxx
Transmission Control Protocol, Src Port: 51720 (51720), Dst Port: 2181
(2181), Seq: 1, Ack: 1, Len: 12
Data (12 bytes)
    Data: 00000008fffffffe0000000b
    [Length: 12]

Re: Zookeeper communication protocol

[Michael Han <ha...@cloudera.com>]

Wire protocol is documented at:
https://github.com/apache/zookeeper/blob/master/src/zookeeper.jute

There is also a tool to analyze the ZK messages, which might help for your
case:
https://github.com/twitter/zktraffic

On Sun, Jan 1, 2017 at 11:24 PM, Ankit Shah <an...@tracxn.com> wrote:

> Hi,
>
> I need to debug the data being exchanged between my kafka consumer and
> zookeeper using tcpdump. I went through the zookeeper documentation but
> could not find any write up about the zookeeper communication protocol i.e
> I get the following data dump using wireshark after removing headers. How
> do I interpret the data part?
>
> Frame 1: 78 bytes on wire (624 bits), 78 bytes captured (624 bits)
> Ethernet II, Src: 22:00:0a:xx:xx:xx (22:00:xx:xx:xx:xx), Dst:
> fe:ff:xx:xx:xx:xx (fe:ff:ff:xx:xx:xx)
> Internet Protocol Version 4, Src: 10.234.xxx.xxx, Dst: 10.231.xxx.xxx
> Transmission Control Protocol, Src Port: 51720 (51720), Dst Port: 2181
> (2181), Seq: 1, Ack: 1, Len: 12
> Data (12 bytes)
>     Data: 00000008fffffffe0000000b
>     [Length: 12]
>



-- 
Cheers
Michael.