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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 bridge adaptor, so we can bind the VMs network interfaces to it:

root@hpc-admin # vim /etc/network/interfaces
# auto enp0s25
# iface enp0s25 inet dhcp
auto br0
iface br0 inet static
	address 10.50.0.2
	netmask 255.255.0.0
	gateway 10.50.0.1
	dns-nameservers 10.50.0.1
	bridge_ports enp0s25
	bridge_stp off
	bridge_maxwait 0
	bridge_fd 0


root@hpc-admin # systemctl restart networking

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 \
                   --network bridge=br0 \
                   --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 \
                   --network bridge=br0 \
                   --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
root@hpc-admin # git clone ssh://git@dev-private-git.linaro.org/hpc/labconf.git && cd labconf && cp -r roles/ ../ (overwriting roles in ans_set_jenkins)
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).

You may get two warnings when you log in to Jenkins, which can be corrected on the Global Security screen:

  • Agent to master security subsystem is currently off: Check the box saying "Enable Agent → Master Access Control"
  • Jenkins instance uses deprecated protocols: JNLP3-connect: Uncheck the box "Java Web Start Agent Protocol/3" in "Agent Protocols"

Save the configuration and you should be all set.


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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