Difference between revisions of "OpenHPC:Headnode install"

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'''Building the bootstrap and vnfs images'''
+
'''NB: This will need to be updated depending on the kernel version being used. For example:'''
 
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wwbootstrap 3.10.0-229.20.1.el7.x86_64
+
[root@head setup-filesystems]# wwbootstrap 3.10.0-327.10.1.el7.x86_64
−
wwvnfs -y --chroot
+
Number of drivers included in bootstrap: 433
 +
Number of firmware images included in bootstrap: 93
 +
Building and compressing bootstrap
 +
Integrating the Warewulf bootstrap: 3.10.0-327.10.1.el7.x86_64
 +
Including capability: provision-adhoc
 +
Including capability: provision-files
 +
Including capability: provision-selinux
 +
Including capability: provision-vnfs
 +
Including capability: setup-filesystems
 +
Including capability: transport-http
 +
Compressing the initramfs
 +
Locating the kernel object
 +
Bootstrap image '3.10.0-327.10.1.el7.x86_64' is ready
 +
Done.
 +
[root@head setup-filesystems]# wwvnfs -y --chroot $CHROOT
 +
Using 'centos7.1' as the VNFS name
 +
Creating VNFS image from centos7.1
 +
Building new chroot...
 +
Building and compressing the final image
 +
Cleaning temporary files
 +
VNFS 'centos7.1' has been imported
 +
Done.
 +
Wrote a new configuration file at: /etc/warewulf/vnfs/centos7.1.conf
 
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Revision as of 15:28, 7 March 2016

Basic Initial System Configuration:

Note; RPMS/repos; http://build.openhpc.community/OpenHPC:/

OpenHPC is designed to deploy CentOS 7.x based clusters, please install a fresh copy of CentOS 7.x onto a system. Please modify the partitioning and make the “/” partition a reasonable size. 

service NetworkManager stop
service iptables stop
chkconfig NetworkManager off
chkconfig iptables off
chkconfig firewalld off
setenforce 0
vi /etc/selinux/config

Modify the system Hostname to use a fully qualified domain name, also modify the network interfaces to have 1x Private interface and 1x Public interface, eno1 must be the private (Provisioning) interface and eno2 can be the public interface. There are alternate ways to specify what interface to use during provision, however with CentOS 7.1 I have been unable to find them. 

echo “head.ohpc.net” > /etc/hostname
vi /etc/sysconfig/network-scripts/ifcfg-eno1
vi /etc/sysconfig/network-scripts/ifcfg-eno2

Yum update the system to the latest package versions, install additional packages and reboot. 

yum install kernel* tk* tcl* tigervnc* ipmitool* freeipmi* cairo* perl* gcc* glibc* screen epel-release vim; yum install htop; yum -y install kernel* tk* tcl* 
tigervnc* ipmitool* freeipmi* cairo* perl* gcc* glibc* screen epel-release vim ntp libnl lsof libxml2-python python mlocate numactl* yum-utils; yum -y install 
htop; yum -y groupinstall "Development Tools" "X Windows System" “Base”; yum –y update

Add the following alias into your bashrc for ease as you will be typing them frequently. 

	
CHROOT=/opt/ohpc/admin/images/centos7.1
ohpc_repo=http://build.openhpc.community/OpenHPC:/1.0/CentOS_7.1/OpenHPC:1.0.repo
sms_name=head.ohpc.net			# Hostanem of Headnode
sms_ip=10.10.10.1				# Private Interface IP of Headnode
sms_eth_internal=eno1				# Private Interface of Headnode
eth_provision=eno1				# Provisioning Interface of Headnode
internal_netmask=255.255.255.0		# Netmaks of Private Interface
ntp_server=0.centos.pool.ntp.org		# Some NTP Server
bmc_username=ADMIN
bmc_password=ADMIN
sms_ipoib=10.10.20.1				# IPoIB Address of Headnode
ipoib_netmask=255.255.255.0			# IPoIB Netmask of Headnode

source /root/.bashrc
wget -P /etc/yum.repos.d ${ohpc_repo}
yum clean all

Setup Network Time Protocol 

service ntp stop
ntpdate 0.centos.pool.ntp.org
vi /etc/ntp.conf		#Modify with your ntp server
service ntp restart
chkconfig ntp on

Enable sudo without a password for users in the Wheel group 

visudo 
# Unhash line 108

Installing and Patching the OpenHPC Base components

Basic OpenHPC Component install and patching to make it work correctly with Grub2 (The patching component of this step is for stateful provisioning only) If deploying systems as only RAM disks this process is not necessary. 

yum groupinstall ohpc-base ohpc-warewulf
yum -y groupinstall ohpc-slurm-server 
useradd slurm

	mkdir /tmp/setup-filesystems
	cd /tmp/setup-filesystems
cat /srv/warewulf/initramfs/capabilities/setup-filesystems | cpio –i
vi warewulf/provision/80-mkbootable

Modify the file with the below contents 

#!/bin/sh
#
# Copyright (c) 2001-2003 Gregory M. Kurtzer
#
# Copyright (c) 2003-2011, The Regents of the University of California,
# through Lawrence Berkeley National Laboratory (subject to receipt of any
# required approvals from the U.S. Dept. of Energy).  All rights reserved.
#


# Install a bootloader if $WWBOOTLOADER is set and the root device is known
if [ -n "$WWBOOTLOADER" -a -f "/tmp/rootdev" ]; then
    if ! echo $WWBOOTLOADER | grep -q "^/dev/"; then
        WWBOOTLOADER="/dev/$WWBOOTLOADER"
    fi
    if [ -b "$WWBOOTLOADER" ]; then
        KERNEL=`cd $NEWROOT; find boot/vmlinuz-* 2>/dev/null | tail -n 1`
        if [ -n "$KERNEL" ]; then
            KERNELVERSION=`echo "$KERNEL" | sed -e 's@.*boot/vmlinuz-@@'`
            if [ -x "$NEWROOT/sbin/dracut" ]; then
                chroot $NEWROOT /sbin/dracut --force '' $KERNELVERSION
                INITRD=`cd $NEWROOT; find boot/initr*-${KERNELVERSION}.img* 2>/dev/null | tail -n 1`
            elif [ -x "$NEWROOT/sbin/mkinitrd" ]; then
                INITRD=`cd $NEWROOT; find boot/initr*-${KERNELVERSION}.img* 2>/dev/null | tail -n 1`
                if [ -n "$INITRD" ]; then
                    INITRD="boot/initramfs-$KERNELVERSION.img"
                fi
                mount -t sysfs none $NEWROOT/sys
                chroot $NEWROOT /sbin/mkinitrd -f $INITRD $KERNELVERSION
                umount $NEWROOT/sys
            fi
            if [ -z "${WWKARGS}" ]; then
                WWKARGS="rhgb"
            fi
            if [ -n "${WWCONSOLE}" ]; then
                # Parse the kernel console option for serial settings for grub
                sed_serial() { echo $1 | sed -nr "s/.*ttyS([0-9]),([0-9]{4,6})([n,o,e])?([5-8])?(r)?.*/\\${2}/p"; }
                SERIALUNIT=`sed_serial ${WWCONSOLE} 1`
                SERIALSPEED=`sed_serial ${WWCONSOLE} 2`
                if [ -z $SERIALSPEED ]; then
                    SERIALSPEED=115200
                fi
                SERIALPARITY=`sed_serial ${WWCONSOLE} 3`
                if [ -z $SERIALPARITY ] || [ "$SERIALPARITY" = "n" ]; then
                    SERIALPARITY=no
                elif [ $SERIALPARITY = "o" ]; then
                    SERIALPARITY=odd
                elif [ $SERIALPARITY = "e" ]; then
                    SERIALPARITY=even
                fi
                SERIALWORD=`sed_serial ${WWCONSOLE} 4`
                if [ -z $SERIALWORD ]; then
                    SERIALWORD=8
                fi
            fi

            if [ -x "$NEWROOT/usr/sbin/grub2-install" ]; then
                if [ -n "${WWCONSOLE}" ]; then
                    echo "GRUB_CMDLINE_LINUX='${WWKARGS} console=tty0 console=${WWCONSOLE}'" >> $NEWROOT/etc/default/grub
                    if [ -n SERIALUNIT ]; then
                        echo "GRUB_TERMINAL='console serial'" >> $NEWROOT/etc/default/grub
                        echo "GRUB_SERIAL_COMMAND='serial --speed=${SERIALSPEED} --unit=${SERIALUNIT} --word=${SERIALWORD} --parity=${SERIALPARITY}'" >> $NEWROOT/etc/default/grub
                    fi
                else
                    echo "GRUB_CMDLINE_LINUX='${WWKARGS}'" >> $NEWROOT/etc/default/grub
                fi
                chroot $NEWROOT /usr/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg >/dev/null

                if chroot $NEWROOT /usr/sbin/grub2-install $WWBOOTLOADER >/dev/null; then
                    exit 0
                fi
            elif [ -x "$NEWROOT/sbin/grub-install" ]; then
                ROOTDEV=`cat /tmp/rootdev`
                if [ -n "$INITRD" -a -n "$KERNEL" ]; then
                    if [ -f "$NEWROOT/etc/redhat-release" ]; then
                        OSVERSION=`sed -e 's@ (.*@@' $NEWROOT/etc/redhat-release`
                    elif [ -f "$NEWROOT/etc/release" ]; then
                        OSVERSION=`cat $NEWROOT/etc/redhat-release | head -n 1`
                    else
                        OSVERSION="Warewulf"
                    fi
                    if [ -f /tmp/mptab ]; then
                        if grep -q "^/boot " /tmp/mptab; then
                            INITRD=${INITRD##boot/}
                            KERNEL=${KERNEL##boot/}
                        fi
                    fi

                    echo "# This file was written by Warewulf bootstrap (capability setup-filesystems)" > $NEWROOT/boot/grub/device.map
                    echo "(hd0) $WWBOOTLOADER" >> $NEWROOT/boot/grub/device.map

                    echo "# This file was written by Warewulf bootstrap (capability setup-filesystems)" > $NEWROOT/boot/grub/grub.conf
                    if [ -n $SERIALUNIT ]; then
                        echo "serial --speed=${SERIALSPEED} --unit=${SERIALUNIT} --word=${SERIALWORD} --parity=${SERIALPARITY}" >> $NEWROOT/boot/grub/grub.conf
                        echo "terminal_input console serial; terminal_output console serial" >> $NEWROOT/boot/grub/grub.conf
                    fi
                    echo "default 0" >>$NEWROOT/boot/grub/grub.conf
                    echo "timeout 10" >>$NEWROOT/boot/grub/grub.conf
                    echo "root (hd0,0)" >>$NEWROOT/boot/grub/grub.conf
                    echo "" >>$NEWROOT/boot/grub/grub.conf
                    echo "title $OSVERSION - $KERNELVERSION" >>$NEWROOT/boot/grub/grub.conf
                    if [ -n "${WWCONSOLE}" ]; then
                        echo "    kernel /$KERNEL ro root=$ROOTDEV rhgb ${WWKARGS} console=tty0 console=${WWCONSOLE}" >>$NEWROOT/boot/grub/grub.conf
                    else
                        echo "    kernel /$KERNEL ro root=$ROOTDEV rhgb ${WWKARGS}" >>$NEWROOT/boot/grub/grub.conf
                    fi
                    echo "    initrd /$INITRD" >>$NEWROOT/boot/grub/grub.conf

                    if [ -f "/tmp/mtab" ]; then
                        cp /tmp/mtab $NEWROOT/etc/mtab
                    fi

                    mkdir $NEWROOT/dev/mapper
                    mknod $NEWROOT/dev/mapper/control c 10 58

                    if chroot $NEWROOT /sbin/grub-install $WWBOOTLOADER >/dev/null; then
                        exit 0
                    else
                        gscript="/root/grubinstall.sh";
                        grubscript=${NEWROOT}${gscript};
                        grubtext=$NEWROOT/root/grubinstall.txt;

                        echo -n "Running grub-install failed. Trying manually.";

                        # Setup Commands to install GRUB
                        echo "root (hd0,0)" > $grubtext;
                        echo "setup (hd0)" >> $grubtext;
                        echo "quit" >> $grubtext;

                        # Bash script to run grub.
                        echo "#!/bin/bash" > $grubscript;
                        echo "/sbin/grub --batch < /root/grubinstall.txt &>/root/grubinstall.out" >> $grubscript;
                        chmod 755 $grubscript;

                        if chroot $NEWROOT $gscript &>/dev/null; then
                            exit 0;
                        else
                            echo "Running grub-install failed!"
                            exit 255
                        fi
                    fi
                else
                    echo "Could not find INITRD and/or KERNEL version!"
                    exit 2
                fi
            else
                echo "GRUB is not installed!"
                exit 2
            fi
        else
            echo "Could not identify kernel version in VNFS!"
            exit 2
        fi
    else
        echo "BOOTLOADER=$BOOTLOADER is invalid!"
        exit 2
    fi
else
    exit 1
fi

# vim: filetype=sh:syntax=sh:expandtab:ts=4:sw=4:

You now need to rebuild the setup-filesystems to a cpio 

find warewulf | cpio -o -c > /srv/warewulf/initramfs/capabilities/setup-filesystems

Modify Warewulf core Configuration Files to provision Correctly

Modify warewulf provision.conf and bootstrap.conf to correctly include the correct kernel modules and configuration 

vi /etc/warewulf/vnfs.conf		#Ensure exclude looks like this.

exclude += /tmp/*
exclude += /var/log/*
exclude += /var/chroots/*
#exclude += /var/cache
exclude += /usr/src
#exclude += /usr/share
#exclude += /home/*
vi /etc/warewulf/bootstrap.conf		#Hash out all Infiniband drivers

# Infiniband drivers and Mellanox drivers
#drivers += ib_ipath, ib_iser, ib_srpt, ib_sdp, ib_mthca, ib_qib, iw_cxgb3, cxgb3
#drivers += iw_nes, mlx4_ib, ib_srp, ib_ipoib, ib_addr, rdma_cm, ib_ucm
#drivers += ib_ucm, ib_uverbs, ib_umad, ib_cm, ib_mad, iw_cm, ib_core
#drivers += rdma_ucm, ib_sa, mlx4_en, mlx4_core
#drivers += rds, rds_rdma, rds_tcp, mlx4_vnic, mlx4_vnic_helper

#Unhash the modprobe for the Mellanox Modules
modprobe += mlx4_core log_num_mtts=20 log_mtts_per_seg=6, ib_srp

Modify some Warewulf provisioning files to use the correct interfaces and some general Warewulf files to allow provisioning to work. 

perl -pi -e "s/device = eth1/device = ${sms_eth_internal}/" /etc/warewulf/provision.conf
perl -pi -e "s/^\s+disable\s+= yes/ disable = no/" /etc/xinetd.d/tftp
export MODFILE=/etc/httpd/conf.d/warewulf-httpd.conf
perl -pi -e "s/cgi-bin>\$/cgi-bin>\n Require all granted/" $MODFILE
perl -pi -e "s/Allow from all/Require all granted/" $MODFILE
perl -ni -e "print unless /^\s+Order allow,deny/" $MODFILE
perl -pi -e "s/ControlMachine=\S+/ControlMachine=head.ohpc.net/" /etc/slurm/slurm.conf
systemctl restart xinetd # This failed
systemctl enable mariadb.service
systemctl restart mariadb
systemctl enable httpd.service
systemctl restart httpd.service
systemctl restart rpcbind.service
systemctl enable rpcbind.service
systemctl restart nfs-server.service
systemctl enable nfs-server.service

Build and Configure the Chroot

Modify /usr/libexec/warewulf/wwmkchroot/centos-7.tmpl to point to updated repo data 

[root@head setup-filesystems]# cat /usr/libexec/warewulf/wwmkchroot/centos-7.tmpl
#DESC: A clone of Red Hat Enterprise Linux 7

# The general RHEL include has all of the necessary functions, but requires
# some basic variables specific to each chroot type to be defined.
. include-rhel



# Define the location of the YUM repository
# YUM_MIRROR="http://mirror.centos.org/centos-7/7/os/\$basearch/"
# YUM_MIRROR="http://mirror.centos.org/centos-7/7.1.1503/os/\$basearch/"
YUM_MIRROR="http://mirror.centos.org/centos-7/7.2.1511/os/\$basearch/"

# Install only what is necessary/specific for this distribution
PKGLIST="SysVinit basesystem bash redhat-release chkconfig coreutils e2fsprogs \
    ethtool filesystem findutils gawk grep initscripts iproute iputils \
    mingetty mktemp net-tools nfs-utils pam portmap procps psmisc rdate rsync \
    sed setup shadow-utils rsyslog tcp_wrappers tzdata util-linux words zlib \
    tar less gzip which util-linux module-init-tools udev openssh-clients \
    openssh-server dhclient pciutils vim-minimal shadow-utils strace cronie \
    crontabs cpuspeed cpufrequtils cpio wget yum numactl libicu"




# vim:filetype=sh:syntax=sh:expandtab:ts=4:sw=4:

Make Initial VNFS (Chroot, compute Node template) and install some Base components into the chroot operating system 

wwmkchroot centos-7 $CHROOT
yum -y --installroot=$CHROOT groupinstall Base
yum -y --installroot=$CHROOT install kernel* grub* sudo ipmitool* epel-release htop nano tk* tcl* tigervnc* ipmitool* freeipmi* cairo* perl* gcc* glibc* screen yum-utils vim ntp libnl 
lsof libxml2-python python mlocate numactl* lmod-ohpc ohpc-slurm-client lmod-ohpc ganglia-gmond-ohpc enviroment-modules hwlock-libs libfabric libpsm2 intel-clck-ohpc

Setup SSH Keys for the Cluster – this is required for the root user only, /home will be exported so user ssh keys will be available. 

wwinit ssh_keys
cat ~/.ssh/cluster.pub >> $CHROOT/root/.ssh/authorized_keys

Setup NFS exports and FSTAB on the compute image 

echo "${sms_ip}:/home /home nfs nfsvers=3,rsize=1024,wsize=1024,cto 0 0" >> $CHROOT/etc/fstab
echo "${sms_ip}:/opt/ohpc/pub /opt/ohpc/pub nfs nfsvers=3,rsize=1024,wsize=1024,cto 0 0" >> $CHROOT/etc/fstab

echo "/home *(rw,no_subtree_check,fsid=10,no_root_squash)" >> /etc/exports
echo "/opt/ohpc/pub *(ro,no_subtree_check,fsid=11)" >> /etc/exports

exportfs –a
systemcl restart rpcbind
systemctl restart nfs-server.service

Copy over resolv.conf to the chroot and modify the contents to point to the headnode and google dns. 

cp /etc/resolv.conf $CHROOT/etc/
vi $CHROOT/etc/resolv.conf

Modify Limits to unlimited on headnode and compute nodes.. 

echo "* soft memlock unlimited" >> /etc/security/limits.conf
echo "* hard memlock unlimited" >> /etc/security/limits.conf
echo "* soft memlock unlimited" >> $CHROOT/etc/security/limits.conf
echo "* hard memlock unlimited" >> $CHROOT/etc/security/limits.conf

Import warewulf files to the database, theses will be synced to compute nodes all of the time. 

wwsh file import /etc/passwd
wwsh file import /etc/shadow
wwsh file import /etc/group
wwsh file import /etc/slurm/slurm.conf
wwsh file import /etc/munge/munge.key
wwsh file import /opt/ohpc/pub/examples/network/centos/ifcfg-ib0.ww
wwsh -y file set ifcfg-ib0.ww --path=/etc/sysconfig/network-scripts/ifcfg-ib0

Building the bootstrap and vnfs images 

wwbootstrap 3.10.0-229.20.1.el7.x86_64
wwvnfs -y --chroot

NB: This will need to be updated depending on the kernel version being used. For example: 

[root@head setup-filesystems]# wwbootstrap 3.10.0-327.10.1.el7.x86_64
Number of drivers included in bootstrap: 433
Number of firmware images included in bootstrap: 93
Building and compressing bootstrap
Integrating the Warewulf bootstrap: 3.10.0-327.10.1.el7.x86_64
Including capability: provision-adhoc
Including capability: provision-files
Including capability: provision-selinux
Including capability: provision-vnfs
Including capability: setup-filesystems
Including capability: transport-http
Compressing the initramfs
Locating the kernel object
Bootstrap image '3.10.0-327.10.1.el7.x86_64' is ready
Done.
[root@head setup-filesystems]# wwvnfs -y --chroot $CHROOT
Using 'centos7.1' as the VNFS name
Creating VNFS image from centos7.1
Building new chroot...
Building and compressing the final image
Cleaning temporary files
VNFS 'centos7.1' has been imported
Done.
Wrote a new configuration file at: /etc/warewulf/vnfs/centos7.1.conf

Compute Node Configuration for Stateful Provisioning

Adding the compute nodes to the database with the correct parameters to allow for statefull provisioning 

wwsh node new c0 --ipaddr=some.ip.address.here -M 255.255.255.0 -G your.gateway.ip.here --domain=ohpc.net  --hwaddr=some.mac.address.here -D eno1
echo "GATEWAYDEV=${eth_provision}" > /tmp/network.$$
wwsh -y file import /tmp/network.$$ --name network
wwsh -y file set network --path /etc/sysconfig/network --mode=0644 --uid=0

wwsh -y provision set c0 --files=dynamic_hosts,passwd,group,shadow,slurm.conf,munge.key,network
wwsh -y provision set c0 --vnfs=centos7.1 --bootstrap=kernel.version.here

Setup Bootloader and Partitions 

wwsh -y object modify -s bootloader=sda c0
wwsh -y object modify -s diskpartition=sda c0
wwsh -y object modify -s diskformat=sda1,sda2,sda3 c0
wwsh -y object modify -s filesystems="mountpoint=/boot:dev=sda1:type=ext4:size=500,dev=sda2:type=swap:size=32768,mountpoint=/:dev=sda3:type=ext4:size=fill" c0
systemctl restart dhcpd
wwsh pxe update
wwsh dhcp update
wwsh node list		# Should show all the nodes you just added
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