warewulf/README-KVM.md

Instructions for setting up warewulf development environment under KVM

1. Create Centos 7 development virtual machine under KVM

   KVM is running on server called master1 which is not my desktop

   ssh -X master1

   On master1 server

   wget -P /global/downloads/centos http://mirror.mobap.edu/centos/7.8.2003/isos/x86_64/CentOS-7-x86_64-Everything-2003.iso

   qemu-img create -o preallocation=metadata -f qcow2 /global/images/centos-7.qcow2

   install wwdev Centos 7 development VM

   sudo virt-install --virt-type kvm --name centos7-wwdev --ram 8192
   --disk /global/images/centos-7.qcow2,format=qcow2
   --network network=default
   --graphics vnc,listen=0.0.0.0 --noautoconsole
   --os-type=linux --os-variant=rhel7.0
   --location=/global/downloads/centos/CentOS-7-x86_64-Everything-2003.iso

   Complete installation using virt-manager

   To start virt-manager on non-local server

   ssh -X master1

   sudo -E virt-manager

   Login to VM and install @development group and go language

   ssh root@wwdev

   Disable selinux by modifying /etc/sysconfig/selinux

   vi /etc/sysconfig/selinux

    SELINUX=disabled
   

   disable firewall

   systemctl stop firewalld systemctl disable firewalld

2. Turn off default network dhcp on server master1

   shutdown all VMs

   $ sudo virsh net-destroy default

   $ sudo virsh net-edit default

    # remove dhcp lines from XML
   

   $ sudo virsh net-start default

3. Build and install warewulf on wwdev

   ssh wwdev

   Fedora prerequisites

   sudo dnf -y install tftp-server tftp sudo dnf -y install dhcp sudo dnf -y install ipmitool sudo dnf install singularity sudo dnf install gpgme-devel sudo dnf install libassuan.x86_64 libassuan-devel.x86_64

   Centos prerequisites

   sudo yum -y install tftp-server tftp sudo yum -y install dhcp sudo yum -y install ipmitool sudo yum install http://repo.ctrliq.com/packages/rhel7/ctrl-release.rpm sudo yum install singularityplus sudo yum install gpgme-devel sudo yum install libassuan.x86_64 libassuan-devel.x86_64

   follow README.md instructions

   cd projects/ctrliq/warewulf

   vi nodes.yaml.local

   make -f Makefile.local install

   build VNFS

   sudo singularity build --sandbox /global/chroots/centos-7 centos-7.def

   vi /etc/warewulf/overlays/generic/etc/sysconfig/network-scripts/ifcfg-*

    # add IP addresses
   

   sudo ./wwbuild vnfs

   sudo ./wwbuild kernel

   sudo ../wwbuild overlay

   sudo ./warewulfd

4. Boot your node and watch the console and the output of the Warewulfd process

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