CentOS 6.5 – Installing a TFTPD server for uploading configuration files

The post I created about installing TFTPD on CentOS 6.3 is one of the most visited posts in my blog. I’ve decided to create a new post for CentOS 6.5 with the same purpose: configure tftpd so it allows uploading files, I’ve used again the information found in /usr/share/doc/tftp-server-0.49/README.security.

yum install tftp-server
adduser tftpd
chown tftpd:tftpd /var/lib/tftpboot
# if you are running iptables and want to save your firewall rules
iptables -I INPUT -p udp --dport 69 -j ACCEPT
service iptables save
# if you want xinetd/tftpd start on boot
chkconfig xinetd on

Once again as I want to be able to upload files I need -c and -p arguments and I’ve set the umask for the new files 117 (read write permissions for tftpd user and group). These are the lines I’ve modified in /etc/xinetd.d/tftp configuration file:

• disable = no
• server_args = -c -p -u tftpd -U 117 -s /var/lib/tftpboot

Finally start the xinetd service:

• service xinetd start

Your TFTPD server will be running in the UDP 69 port… again 🙂

Enjoy!

CentOS 6.5 – Openvswitch 1.9.3 LTS installation

Happy new year!

I’ve just installed CentOS 6.5 and I wanted to use Openvswitch. I’ve succeded installing the 1.9.3 LTS version using the instructions included by Nicira.

#yum install wget openssl-devel
#yum groupinstall "Development Tools"

#adduser ovswitch
#su ovswitch

$cd
$wget http://openvswitch.org/releases/openvswitch-1.9.3.tar.gz
$tar xvfz openvswitch-1.9.3.tar.gz
$cd openvswitch-1.9.3
$mkdir -p /home/ovswitch/rpmbuild/SOURCES
$ cp ../openvswitch-1.9.3.tar.gz /home/ovswitch/rpmbuild/SOURCES/
$cp rhel/openvswitch-kmod.files /home/ovswitch/rpmbuild/SOURCES/
$rpmbuild -bb rhel/openvswitch.spec
$rpmbuild -bb rhel/openvswitch-kmod-rhel6.spec
$exit

#yum localinstall /home/ovswitch/rpmbuild/RPMS/x86_64/kmod-openvswitch-1.9.3-1.el6.x86_64.rpm
#yum localinstall /home/ovswitch/rpmbuild/RPMS/x86_64/openvswitch-1.9.3-1.x86_64.rpm

And that’s all, openvswitch 1.9.3 is ready in CentOS 6.5

I’ve tried to use the latest stable version 2.0.0 but I’ve found some problems building the kernel module with netdev:

“error: conflicting types for ‘netdev_features_t'”

It seems that Jesse Gross from Nicira wrote a patch for this problem, but I must be doing something wrong and I can’t get the module built so I’ll try again in a few days and I’ll update this post if I get it working.

Of course you can always use the latest version from Git where that patch must be already applied so I suggest you to read Tyler Bishop’s post about how to use the latest openvswitch’s git version with CentOS 6.5

See ya!