zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Michael Han <h...@apache.org>
Subject Re: can not know the process name from zk log
Date Wed, 12 Sep 2018 21:54:01 GMT
I have a patch that basically did what OP wanted - allows client to pass
more detailed information to server for client tracking. It's a useful
feature, for debugging and in future, for ZK to support multi-tenancy and
enforced quota. I'll try upstream that patch via
https://issues.apache.org/jira/browse/ZOOKEEPER-3147.

On Wed, Sep 12, 2018 at 3:10 AM, Shawn Heisey <apache@elyograg.org> wrote:

> On 9/12/2018 2:33 AM, wangyongqiang0617@163.com wrote:
>
>> from zk log, i can get the ip and port,  i think if zk can print the
>> process info with the ip and port , will help us in some cases
>>
>
> What precisely are you after?  A java program can typically report what
> PID its process has, but I don't know that any other process information is
> available.  I have not checked to see whether ZK logs the PID it's using at
> any point.  Usually such information is logged at startup (if it is ever
> logged at all) and not anywhere else.
>
> With the port number, you can use a program like lsof or netstat to
> determine the pid, and I think this works on both the client and server
> side.  Here's an example of that for another Java program.  This isn't
> zookeeper, but the same thing will work for ZK too.
>
> root@smeagol:~# lsof -Pn -i:45499
> COMMAND  PID     USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
> java    8713 elyograg   35u  IPv6   95610      0t0  TCP 127.0.0.1:45499
> (LISTEN)
> java    8713 elyograg   62u  IPv6 6442866      0t0  TCP 127.0.0.1:52686->
> 127.0.0.1:45499 (CLOSE_WAIT)
> java    8713 elyograg   67u  IPv6 6443911      0t0  TCP 127.0.0.1:52792->
> 127.0.0.1:45499 (CLOSE_WAIT)
> java    8713 elyograg   78u  IPv6 6446143      0t0  TCP 127.0.0.1:52814->
> 127.0.0.1:45499 (ESTABLISHED)
> java    8713 elyograg   83u  IPv6 6444628      0t0  TCP 127.0.0.1:45499->
> 127.0.0.1:52814 (ESTABLISHED)
> java    8713 elyograg   84u  IPv6 6443524      0t0  TCP 127.0.0.1:52710->
> 127.0.0.1:45499 (CLOSE_WAIT)
> java    8713 elyograg   85u  IPv6 6442460      0t0  TCP 127.0.0.1:52360->
> 127.0.0.1:45499 (CLOSE_WAIT)
> java    8713 elyograg   87u  IPv6 6445101      0t0  TCP 127.0.0.1:52766->
> 127.0.0.1:45499 (CLOSE_WAIT)
> java    8713 elyograg  113u  IPv6 6443962      0t0  TCP 127.0.0.1:52844->
> 127.0.0.1:45499 (ESTABLISHED)
> java    8713 elyograg  119u  IPv6 6444645      0t0  TCP 127.0.0.1:45499->
> 127.0.0.1:52844 (ESTABLISHED)
> java    8713 elyograg  200u  IPv6 6441819      0t0  TCP 127.0.0.1:52656->
> 127.0.0.1:45499 (CLOSE_WAIT)
>
> The -Pn parameters instruct lsof to not translate port numbers or IP
> addresses to names.  I do this to make the lsof program run faster.
>
> Thanks,
> Shawn
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message