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  • Created by Former user , last modified by Former user on Feb 07, 2018
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Setting up the hpc-admin node

The hpc-admin node will be the physical server hosting the MrProvisioner and Jenkins services for the HPC lab.
The baremetal installation is : a Debian9 (stretch) hosting the two services using KVM/QEMU for the moment (migration to Docker/Containers will be possible when MrP support for containers is production ready.)

Install Debian as you normally would for a server, do care to install the ssh server and to plan for enough space for the Jenkins logs (a bare minimum of 500Go for the Jenkins VM is desirable)

root@hpc-admin # apt update && apt upgrade
root@hpc-admin # apt install sudo git net-tools vim bridge-utils qemu-kvm libvirt-clients libvirt-daemon-system virtinst dirmngr build-essential
root@hpc-admin # echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu trusty main" >> /etc/apt/sources.list
root@hpc-admin # apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 93C4A3FD7BB9C367
root@hpc-admin # apt update && apt install ansible


You now have a working baremetal server running Debian9 with all the appropriate utilities and tools.

NOTE: To directly ssh in the server as root, you have to add your public SSH key to /root/.ssh/authorized_keys


Setting up the VMs

First you need to setup libvirt's network to have a default internet access via NAT on the VMs at creation.

root@hpc-admin # virsh net-define /etc/libvirt/qemu/networks/default.xml
root@hpc-admin # virsh net-autostart default
root@hpc-admin # virsh net-start default
# Makesure it worked
root@hpc-admin # brctl show
# Make sure FORWARD works on reboot
root@hpc-admin # echo net.ipv4.ip_forward=1 > /etc/sysctl.conf

Then create 2 VMs : one for MrP, one for Jenkins.

NOTE: FOR THE PRESEED, use the one attached to JIRA issue HPC-115 the one entitled "preseed_replace_SSHPUBKEY.cfg" and be sure to replace it, as else it won't add your sshkey to the root user.

user@hpc-admin $ sed -i "s/SSHROOTPUB/$(sed 's:/:\\/:g' /home/user/.ssh/id_rsa.pub)/" preseed_replace_SSHPUBKEY.cfg
user@hpc-admin $ mv preseed_replace_SSHPUBKEY.cfg preseed.cfg

NOTE: The pressed NEEDS to be called "preseed.cfg" else the virt-install WILL NOT take it.

root@hpc-admin # virt-install --virt-type kvm \
                   --name jenkins-hpc \
                   --memory 16384 \
                   --vcpus 4 \
                   --disk size=500 \
                   --os-variant debian9 \
                   --graphics none \
                   --initrd-inject=preseed.cfg \
                   --location http://cdn-fastly.deb.debian.org/debian/dists/stretch/main/installer-amd64/ \
                   --extra-args "console=ttyS0,115200n8 serial"      
root@hpc-admin # virt-install --virt-type kvm \
                   --name mrp-hpc \
                   --memory 4096 \
                   --vcpus 2 \
                   --disk size=20 \
                   --os-variant debian9 \
                   --graphics none \
                   --initrd-inject=preseed.cfg \
                   --location http://cdn-fastly.deb.debian.org/debian/dists/stretch/main/installer-amd64/ \
                   --extra-args "console=ttyS0,115200n8 serial"


Installing the Jenkins service


Add your jenkins-hpc IP to /etc/ansible/hosts under the tag "[jenkins]"

Then :

root@hpc-admin # git clone https://github.com/BaptisteGerondeau/ans_setup_jenkins.git && cd ans_setup_jenkins
// Do put the secret files in the right place, see the README.md : pending upload to private repo
root@hpc-admin # ansible-playbook configure-jenkins.yml -vvv -u root


Setup networking so that you can connect to your Jenkins VM on port 8080 (or whatever you set it to in the Ansible playbook) and login with your linaro.org ldap account (with @linaro.org at the end).


Installing the MrP service


Add your mrp-hpc IP to /etc/ansible/hosts under the tag "[infra_servers]"

Then :

root@hpc-admin # git clone https://github.com/niedbalski/infra-automation.git && cd infra_automation/ansible
root@hpc-admin # ansible-playbook playbooks/infra-server.yml -vvv -u root


Then you can login to MrP on port 5000  (or whatever you set it to in the Ansible playbook) and login with the usual first install login (admin:linaro).

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