Difference between revisions of "Centos7"

Revision as of 21:07, 23 March 2015

Introduction

Centos7 makes some big changes to both the init system and to the firewall

centos7 systemd system file

Additional yum command

 yum install perl-TimeDate perl-Time-HiRes perl-Digest-SHA1 perl-Curses perl-Net-Telnet git gcc make perl-Data-Dumper perl-DB_File

systemd

a basic service file for systemd

create a file

/etc/systemd/system/dxspider.service

With the following contents

[Unit]
Description= Dxspider DXCluster service
After=network.target

[Service]
Type=simple
User=sysop
Group=sysop
ExecStart= /usr/bin/perl -w /spider/perl/cluster.pl
# Comment out line below for logging everything to /var/log/messages
StandardOutput=null
Restart=always

[Install]
WantedBy=multi-user.target

Usage:

to start up dxspider 
#service dxspider start
to stop
#service dxspider stop

to set up to start on boot 
#systemctl enable dxspider

firewalld

The firewall, centos7 has moved to using firewalld to manage the firewall settings, I am not sure how I feel about this! The old way can be installed

#yum remove firewalld
#yum install iptables-service 

systemctl enable iptables

Then you have the traditional iptables way of doing things

However if one wishes to use the 'new way' with firewalld

first create

/etc/firewalld/services/dxspider.xml

with the contents (change port number to suit your own needs)

<service>
  <short>SSH</short>
  <description>Dxspider dxcluster service on tcp port 7300</description>
  <port protocol="tcp" port="7300"/>
</service>

then issue the following commands as root

#firewall-cmd --reload 
#firewall-cmd --permanent --zone=public --add-service=dxspider
#firewall-cmd --reload