Johann,
please read the instruction at http://rpm.ntop.org that tells you about zmq4

Luca

On 10/12/2015 08:53 AM, Johann Ferdinands wrote:
>
> Hi
>
>  
>
> I receive this error
>
>  
>
> ntopng: error while loading shared libraries: libzmq.so.4: cannot open
> shared object file: No such file or directory
>
>  
>
> after updating a CentOS 6.6 system to latest version of ntopng and
> also all available system updates.
>
>  
>
> Do I need to reinstall from scratch?
>
>  
>
> yum info for ntopng and zeromq
>
>  
>
> Installed Packages
>
> Name        : ntopng
>
> Arch        : x86_64
>
> Version     : 2.1.151011
>
> Release     : 560
>
> Size        : 63 M
>
> Repo        : installed
>
> From repo   : ntop
>
> Summary     : Web-based network traffic monitoring
>
> URL         : http://www.ntop.org/
>
> License     : GPL
>
> Description : Web-based traffic monitoring
>
>             :
>
>             : %setup -q
>
>  
>
> Installed Packages
>
> Name        : zeromq
>
> Arch        : x86_64
>
> Version     : 2.2.0
>
> Release     : 4.el6
>
> Size        : 871 k
>
> Repo        : installed
>
> From repo   : epel
>
> Summary     : Software library for fast, message-based applications
>
> URL         : http://www.zeromq.org
>
> License     : LGPLv3+
>
> Description : The 0MQ lightweight messaging kernel is a library which
> extends the
>
>             : standard socket interfaces with features traditionally
> provided by
>
>             : specialized messaging middle-ware products. 0MQ sockets
> provide an
>
>             : abstraction of asynchronous message queues, multiple
> messaging
>
>             : patterns, message filtering (subscriptions), seamless
> access to
>
>             : multiple transport protocols and more.
>
>             :
>
>             : This package contains the ZeroMQ shared library.
>
>  
>
>  
>
> Thanks
>
>  
>
> *Johann Ferdinands
>
> *
>
>  
>
>  
>
>
>
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