Concourse workers require an HTTP/HTTPS proxy to access external artifacts from the internet.
Deploy Concourse workers with appropriate proxy configuration for the groundcrew job.
- name: worker
...
jobs:
- name: groundcrew
release: concourse
properties:
http_proxy_url: <http_proxy_url>:<http_proxy_port>
https_proxy_url: <https_proxy_url>:<http_proxy_port>
no_proxy:
- localhost
- 127.0.0.1
- 10.1.1.0/24 # subnet CIDR
- mydomain.com
Documentation on accepted groundcrew job's parameters: https://bosh.io/jobs/groundcrew?source=github.com/concourse/concourse#p=http_proxy_url
In order to verify if the proxy configuration was applied after redeploying Concourse with the updates above, intercept the container of a pipeline task and check its environment variables (env command). It should contain the corresponding http_proxy,https_proxy and no_proxy variables along with their configured values from the Concourse deployment manifest.
- Problem: Even with proxy config, connectivity fails with a message similar to
Cloning into /tmp/git-resource-repo-cache\... fatal: unable to access ... : Failed to connect to <proxy_ip> port 1080: Connection timed out
Possible root cause: socks proxy may be running on a non-standard port.
Potential solution: explicitly declare the proxy port number in the deployment manifest (even for http and port 80) and re-deploy Concourse.
Example:
...
properties:
http_proxy_url: http://10.160.0.29:80
https_proxy_url: http://10.160.0.29:80
...