DRLM Installation

The pourpose of this manual is explain, step by step, the installation and configuration of DRLM. At the end of this guide you should have a fully functional DRLM server.

Debian 8/9 & Ubuntu 16.04/18.04 LTS

Note

On the following steps, is assumed you have a minimal installation of Debian 8/9 or Ubuntu 16.04/18.04 LTS.

Install requirements

~# apt update
~# apt upgrade
~# apt install openssh-client openssl gawk nfs-kernel-server rpcbind isc-dhcp-server tftpd-hpa qemu-utils sqlite3 lsb-release bash-completion

Get DRLM

You can obtain the DRLM package building it from the source code

Build DEB package from Source

~# apt install git build-essential debhelper golang
~$ git clone https://github.com/brainupdaters/drlm
~$ cd drlm
~$ make deb
~$ cd ..

Install DRLM package

The DEB package can be installed as follows (on Debian, Ubuntu)

Execute the next command:

~# dpkg -i drlm_2.3.0_all.deb

DRLM Components Configuration

This section covers configuration of:

  • GRUB
  • TFTP Service

Configuring loop limits

The default configuration allows up to eight active loop devices. If more than eight file-based guests or loop devices are needed the number of loop devices configured can be adjusted adding the parameter max_loop=1024 in the /etc/default/grub file as follows:

...

GRUB_CMDLINE_LINUX="quiet max_loop=1024" ##UPDATE THIS LINE

...
~# grub-mkconfig -o /boot/grub/grub.cfg

TFTP

You have to update the destination folder in the /etc/default/tftpd-hpa cofiguration file as follows

# /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/var/lib/drlm/store"
TFTP_ADDRESS="0.0.0.0:69"
TFTP_OPTIONS="--secure"

DHCP

You have to update the interfaces where the DHCP server is going to listen

# /etc/default/isc-dhcp-server
INTERFACESv4="<interface-name>"

Restart & check services

~# systemctl restart tftpd-hpa.service
~# systemctl status tftpd-hpa.service

~# systemctl restart rpcbind.service
~# systemctl status rpcbind.service

Note

DHCP and NFS servers are not running because there is no config yet! no worries they will be reloaded automatically after first DRLM client will be added.

Debian 7 & Ubuntu 14.04 LTS

Note

On the following steps, is assumed you have a minimal installation of Debian 7 or Ubuntu 14.04.

Install requirements

~# apt-get update
~# apt-get upgrade
~# apt-get install openssh-client openssl wget gzip tar gawk sed grep coreutils util-linux nfs-kernel-server rpcbind isc-dhcp-server tftpd-hpa qemu-utils sqlite3 lsb-release bash-completion

Get DRLM

You can obtain the DRLM package building it from the source code

Build DEB package from Source

~# apt-get install git build-essential debhelper golang
~$ git clone https://github.com/brainupdaters/drlm
~$ cd drlm
~$ make deb
~$ cd ..

Install DRLM package

The DEB package can be installed as follows (on Debian, Ubuntu)

Execute the next command:

~# dpkg -i drlm_2.3.0_all.deb

DRLM Components Configuration

This section covers configuration of:

  • GRUB
  • TFTP Service

Configuring loop limits

The default configuration allows up to eight active loop devices. If more than eight file-based guests or loop devices are needed the number of loop devices configured can be adjusted adding the parameter max_loop=1024 in the /etc/default/grub file as follows:

...

GRUB_CMDLINE_LINUX="max_loop=1024" ##UPDATE THIS LINE

...
~# grub-mkconfig -o /boot/grub/grub.cfg

TFTP

You have to update the destination folder in the /etc/default/tftpd-hpa cofiguration file as follows

# /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/var/lib/drlm/store"
TFTP_ADDRESS="0.0.0.0:69"
TFTP_OPTIONS="--secure"

Restart & check services

~# service tfrpd-hpa restart
~# service tftpd-hpa status
in.tftpd is running.
~# service rpcbind restart
~# service rpcbind status
rpcbind is running.

Note

DHCP and NFS servers are not running because there is no config yet! no worries they will be reloaded automatically after first DRLM client will be added.

CentOS 7 & RHEL 7

Note

On the following steps, is assumed you have a minimal installation of CentOS or RHEL 7.

Warning

SELinux has been disabled

~$ cat /etc/sysconfig/selinux

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted
~# setenforce 0

Warning

Firewall has been disabled

~# systemctl stop firewalld
~# systemctl disable firewalld
    Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
    Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

Note

It is not a requirement to disable SELinux and Firewall, but to work with DRLM Server must be properly configured. We have disabled this features for easier installation.

Install requirements

~#  yum -y install openssh-clients openssl wget gzip tar gawk sed grep coreutils util-linux rpcbind dhcp tftp-server xinetd nfs-utils nfs4-acl-tools mod_ssl qemu-img sqlite redhat-lsb-core bash-completion

Get DRLM

Build RPM package from Source

~# yum install git rpm-build golang
~$ git clone https://github.com/brainupdaters/drlm
~$ cd drlm
~$ make rpm

Install DRLM package

The RPM package can be installed as follows (on Redhat, CentOS)

Execute the next command:

~# rpm -ivh drlm-2.3.0-1git.el7.noarch.rpm

DRLM Components Configuration

This section covers configuration of:

  • GRUB
  • TFTP Service

Configuring loop limits

The default configuration allows up to eight active loop devices. If more than eight file-based guests or loop devices are needed the number of loop devices configured can be adjusted adding the parameter max_loop=1024 in the /etc/default/grub file as follows:

...

GRUB_CMDLINE_LINUX="......... max_loop=1024" ##UPDATE THIS LINE ADDING MAX_LOOP=1024 PARAMETER

...
~# grub2-mkconfig -o /boot/grub2/grub.cfg

TFTP

You have to update the /etc/xinetd.d/tftp cofiguration file as follows:

service tftp
{
        socket_type = dgram
        protocol = udp
        wait = yes
        user = root
        server = /usr/sbin/in.tftpd
        server_args = -s /var/lib/drlm/store
        disable = no
        per_source = 11
        cps = 100 2
        flags = IPv4
}

Restart & check services

~# systemctl restart xinetd.service
~# systemctl enable xinetd.service
~# systemctl status xinetd.service

~# systemctl restart rpcbind.service
~# systemctl enable rpcbind.service
~# systemctl status rpcbind.service

Note

DHCP and NFS servers are not running because there is no config yet! no worries they will be reloaded automatically after first DRLM client will be added.

CentOS 6 & RHEL 6

Note

On the following steps, is assumed you have a minimal installation of CentOS or RHEL 6.

Warning

Iptables and SELinux has been disabled

~$ cat /etc/sysconfig/selinux

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted
~# setenforce 0

Warning

Firewall has been disabled

~# chkconfig iptables off
~# service iptables stop

Note

It is not a requirement to disable SELinux and Iptables, but to work with DRLM Server must be properly configured. We have disabled these features for easier installation.

Install requirements

~#  yum -y install openssh-clients openssl wget gzip tar gawk sed grep coreutils util-linux rpcbind dhcp tftp-server xinetd nfs-utils nfs4-acl-tools mod_ssl qemu-img sqlite redhat-lsb-core bash-completion

Get DRLM

Build RPM package from Source

~# yum install git rpm-build golang
~$ git clone https://github.com/brainupdaters/drlm
~$ cd drlm
~$ make rpm

Install DRLM package

The RPM package can be installed as follows (on RHEL, CentOS)

Execute the next command:

~# rpm -ivh drlm-2.3.0-1git.el7.noarch.rpm

DRLM Components Configuration

This section covers configuration of:

  • GRUB
  • TFTP Service

Configuring loop limits

The default configuration allows up to eight active loop devices. If more than eight clients are needed, the number of loop devices configured can be adjusted adding the parameter max_loop=1024 in the /etc/grub.conf file as follows:

title Red Hat Enterprise Linux (2.6.32-358.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/vgroot-lvroot rd_NO_LUKS LANG=en_US.UTF-8  KEYBOARDTYPE=pc KEYTABLE=es rd_NO_MD rd_LVM_LV=vgroot/lvswap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vgroot/lvroot rd_NO_DM rhgb quiet max_loop=1024
initrd /initramfs-2.6.32-358.el6.x86_64.img

TFTP

You have to update the /etc/xinetd.d/tftp cofiguration file as follows:

service tftp
{
        socket_type = dgram
        protocol = udp
        wait = yes
        user = root
        server = /usr/sbin/in.tftpd
        server_args = -s /var/lib/drlm/store
        disable = no
        per_source = 11
        cps = 100 2
        flags = IPv4
}

Restart & check services

~# service xinetd restart
~# service xinetd status
xinetd (pid  5307) is running...
~# service rpcbind restart
~# service rpcbind status
rpcbind (pid  5097) is running...

Note

DHCP and NFS servers are not running because there is no config yet! no worries they will be reloaded automatically after first DRLM client will be added.

SLES 12 & OpenSUSE Leap 42

Note

On the following steps, is assumed you have a minimal SLES 12 or OpenSUSE Leap 42

Install requirements

~# zypper in openssl wget gzip tar gawk sed grep coreutils util-linux nfs-kernel-server rpcbind dhcp-server sqlite3 openssh qemu-tools tftp xinetd lsb-release bash-completion

Get DRLM

You can obtain the DRLM package building it from the source code.

Build RPM package from Source

~# zypper install git-core rpm-build golang
~$ git clone https://github.com/brainupdaters/drlm
~$ cd drlm
~$ make rpm

You can obtain the RPM DRLM package from www.drlm.org website

Install DRLM package

The RPM package can be installed as follows (on SLES 12 SP1)

Execute the next command:

~# zypper in drlm-2.2.1-1git.noarch.rpm

DRLM Components Configuration

This section covers configuration of:

  • GRUB
  • TFTP Service

Configuring loop limits

The default configuration allows up to eight active loop devices. If more than eight file-based guests or loop devices are needed the number of loop devices configured can be adjusted adding the parameter max_loop=1024 in the /etc/default/grub file as follows:

...

GRUB_CMDLINE_LINUX="... quiet max_loop=1024" ##UPDATE THIS LINE

...
~# grub2-mkconfig -o /boot/grub2/grub.cfg

TFTP

You have to update the /etc/xinetd.d/tftp cofiguration file as follows:

service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes
        flags                   = IPv6 IPv4
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -u tftp -s /var/lib/drlm/store
        per_source              = 11
        cps                     = 100 2
        disable                 = no
}

DHCP

Same as /etc/exports file, configuration of /etc/dhcpd.conf file is not required, the file is automatically maintained by DRLM.

but you have to change the location of /etc/dhcpd.conf

Edit /etc/drlm/local.conf

DHCP_DIR="/etc"
DHCP_FILE="$DHCP_DIR/dhcpd.conf"

DHCPD_INTERFACE by default is set as DHCPD_INTERFACE=”” and dhcpd does not start, change it to “ANY”

Edit /etc/sysconfig/dhcpd

DHCPD_INTERFACE="ANY"

Restart & check services

~# systemctl restart xinetd.service
~# systemctl status xinetd.service

~# systemctl restart rpcbind.service
~# systemctl status rpcbind.service

~# systemctl enable nfs-server
~# systemctl start nfs-server
~# systemctl status nfs-server

Note

DHCP and NFS servers are not running because there is no config yet! no worries they will be reloaded automatically after first DRLM client will be added.