...
On the remote system, add your SSH public key to ~/.ssh/authorized_keys.
vars.yml
Create a file called vars.yml. This file will have some values for our setup, as well as some options that we shall pass to the driver when we run it. (Those options could alternatively be passed through the command line.)
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### TODO Maybe some AWS stuff
### SVN credentials
# FIXME these ought to be secured using ansible-vault, or at least this file should not be readable
svn_username: jmft2 # CHANGEME
svn_password: something # CHANGEME
### Where do you want to store output?
mountpoint: /media/apollo
storagedir: /media/apollo
driver_dir: MyDriver
driver: MyDriver
######
### Options for the driver itself
series: ansible
simulation: tut3 # TODO can we do a loop here?
flags: -name "{{series}}_{{simulation}}"
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Playbook
In your base directory, create the file playbook.yml:
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--- - name: Mount S3 storage hosts: albatross remote_user: pi become: no gather_facts: no vars_files: - vars.yml roles: - role: mountstorage - name: Build and run MercuryDPM hosts: albatross remote_user: pi become: no # FIXME Do we have to run everything as root? gather_facts: no vars_files: - vars.yml roles: - role: workhorse |
In this example, we shall give albatross two roles. First, it should mount storage, e.g. an S3 bucket. Next, it should download MercuryDPM, build our driver, and run it.
Mounting storage
If you're storing on a local disc, nothing needs to be done here. If you want to store on a Google Drive, an S3 bucket or a remote filer, then you will need to have a role for mountstorage.
Create a file at mountstorage/tasks/main. yml and put the following in it:
(TODO)
Tasks for the workhorse role
...
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--- # tasks file for workhorse - name: update apt cache and install commonprerequisite packages apt: update_cache: yes name: - python3 become: yes - name: Download and build MercuryDPM block: - name: Install MercuryDPM dependencies apt: update_cache: yes name: - build-essential - g++ - gfortran - subversion - cmake - graphviz state: present become: yes - name: Copy MercuryDPM build script copy: src=build_mdpm.sh dest=/opt mode=0755 - name: Download and build MDPM command: bash /opt/build_mdpm.sh register: build_output - name: Print info debug: msg="{{build_output.stdout}}" - name: Print errors debug: msg="{{build_output.stderr}}" - name: Prepare script that builds and runs driver template: src: build_and_run_driver.sh.j2 dest: /opt/MercuryDPM/build_and_run_driver.sh mode: 0755 - name: Run that script # TODO https://stackoverflow.com/questions/39347379/ansible-run-command-on-remote-host-in-background shell: (nohup /opt/MercuryDPM/build_and_run_driver.sh </dev/null >/dev/null 2>&1 &) # command: bash /opt/MercuryDPM/build_and_run_driver.sh async: 10 poll: 0 |
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#!/bin/bash set -eux DPMDIR=/opt/MercuryDPM SIMDIR=/mnt/s3gf/{{series}}/{{simulation}} DRIVER_DIR=$DPMDIR/MercuryBuild/Drivers/{{driver_dir}} DRIVER_PATH=$DRIVER_DIR/{{driver}} SIMDIR={{storagedir}}/{{series}}/{{simulation}} cd $DRIVER_DIR make {{driver}} mkdir -p $SIMDIR cd $SIMDIR $DRIVER_PATH {{flags}} |