Another question:

     Who to install the syslog-ng OSE into a RHEL 7(virtual machine), because this machine have no access to internet.

So how to do this steps of manual, without internet:

2. The Extra Packages for Enterprise Linux (EPEL) repository contains many useful packages, which are not included in RHEL. A few dependencies of syslog-ng are available this repo. You can enable it by downloading and installing an RPM package:

wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh epel-release-latest-7.noarch.rpm

3. Add the repo containing the latest unofficial build of syslog-ng. By the time of writing it is syslog-ng 3.24 and it is available on the Copr build service. Download the repo file to /etc/yum.repos.d/, so you can install and enable syslog-ng:

cd /etc/yum.repos.d/
wget https://copr.fedorainfracloud.org/coprs/czanik/syslog-ng324/repo/epel-7/czanik-syslog-ng324-epel-7.repo
yum install syslog-ng
systemctl enable syslog-ng
systemctl start syslog-ng

Add any further sub-packages you need.

4. It is not strictly required, but you can avoid some confusion, if you also delete rsyslog at the same time:

yum erase rsyslog
 Tks,
William Luiz


De: syslog-ng <syslog-ng-bounces@lists.balabit.hu> em nome de William Luiz Ribeiro Vasconcelos Da Silva <wsilva_ericsson@timbrasil.com.br>
Enviado: quinta-feira, 17 de outubro de 2019 16:02
Para: Syslog-ng users' and developers' mailing list <syslog-ng@lists.balabit.hu>
Assunto: Re: [syslog-ng] Install Syslog-ng OSE into Virtual Machine - RHEL OS
 
Hi László,

What is the kernel parameters for heavy UDP traffic? Who to change it?

De: syslog-ng <syslog-ng-bounces@lists.balabit.hu> em nome de László Pál <vlad@vlad.hu>
Enviado: quinta-feira, 17 de outubro de 2019 15:57
Para: Syslog-ng users' and developers' mailing list <syslog-ng@lists.balabit.hu>
Assunto: Re: [syslog-ng] Install Syslog-ng OSE into Virtual Machine - RHEL OS
 
RHEL and derivatives uses rsyslog by default, so if you plan to use syslog-ng instead, you should remove rsyslog first. Other configs are highly depends on your usecase (like adjust kernel parameters for heavy UDP traffic and so on). Also quite generic people are facing with issues with selinux and firewalld but obviously there are solutions for any of these (other than turning off these services :))

L:


On 2019. Oct 17., at 20:45, William Luiz Ribeiro Vasconcelos Da Silva <wsilva_ericsson@timbrasil.com.br> wrote:

Good aftenoon !

    I will install the syslog-ng OSE into a virtual machine with RHEL 7. 

    Is there anything I should worry about when installing on a virtual machine?

    Is there something to configurated on OS, before or after the install syslog-ng?


Tks,
William Luiz



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