scp-ssh-resource

A Concourse resource to run commands on hosts or copy files to them using SSH or SCP. This resource is based on https://github.com/Karunamon/concourse-ssh-scp-resource, but supports adding a custom port. I could not get the changes to work in Python so rewrote it in PHP. It also changes the format of the files to upload.

Resource Configuration

All items are required, and go under the source key:

• user: SSH username
• host: Host to log into
• port: Port to connect to (default: 22)
• verbose: Whether to print verbose output (default: "false")
• private_key: Private key for user

Behavior

• check: Not implemented
• get: Not implemented
• put: Run a command or copy a file to the configured user@host

SCP

To copy files, add the files key to params, and under it, pass a list of file pairs (prefixed with a -) to copy with : as the separator between source and destination. It is recommended to quote both the source and destination to avoid any YAML parsing surprises. The source directory should be an output name from a previous build step. This is represented in the example as outfiles. The destination directory should be an absolute path (beginning with a /).

- put: scp-ssh-resource
  params:
    files:
      - "outfiles/index.html:/var/www/public_html/index.html"
      - "outfiles/page.html:/var/www/public_html/page.html"

To run commands, add the commands key to params, and under that, give the commands to run as list items (prefixed with a -). Again, quotes are recommended to avoid YAML surprises. Note that all commands run in a && chain from top to bottom, so failure or a nonzero exit of any command will result in all later commands on this step not executing.

- put: scp-ssh-resource
  params:
    commands:
      - "ls /var/www/public_html"
      - "free -m"
      - "/bin/false"
      - "/bin/true"  # Will not run

You may copy files and run commands as part of the same step. Note that file copies will always be run first.

params:
  files:
    - "outfiles/main.py:/var/www/public_html/main.py"
  commands:
    - 'ls /var/www/public_html`
    - `md5sum /var/www/public_html/*`
    - `systemctl restart nginx`

Installation

Add a new resource type to your pipeline. You can use the container image from Docker Hub (meezaan/concourse-ssh-scp-resource) or 1x.ax (1x.ax/meezaan/concourse/scp-ssh-resource):

resource_types:
- name: ssh-scp
  type: registry-image
  source:
    repository: meezaan/concourse-ssh-scp-resource

Then, define a resource targeting the system you want to run commands on or copy files to:

resources:
- name: website-html-scp
  type: ssh-scp
  icon: web
  source:
    user: someuser
    host: mywebserver.com
    port: 22
    private_key: |
      -----BEGIN OPENSSH PRIVATE KEY-----
      ...
      -----END OPENSSH PRIVATE KEY-----

Please use a credential manager for your private key, and do not check it into source control.

Thanks

• Dan Spencer (@danrspencer) for writing this. All I've done is minor bug fixing and documentation.
• Mike Parks (@Karunamon) for the bug fixing and docs.