Drone 0.8: build stuck in pending state

Question

Installed Drone 0.8 on virtual machine with the following Docker Compose file:

version: '2'

services:
  drone-server:
    image: drone/drone:0.8
    ports:
      - 8080:8000
      - 9000:9000
    volumes:
      - /var/lib/drone:/var/lib/drone/
    restart: always
    environment:
      - DATABASE_DRIVER=sqlite3
      - DATABASE_CONFIG=/var/lib/drone/drone.sqlite
      - DRONE_OPEN=true
      - DRONE_ORGS=my-github-org
      - DRONE_ADMIN=my-github-user
      - DRONE_HOST=${DRONE_HOST}
      - DRONE_GITHUB=true
      - DRONE_GITHUB_CLIENT=${DRONE_GITHUB_CLIENT}
      - DRONE_GITHUB_SECRET=${DRONE_GITHUB_SECRET}
      - DRONE_SECRET=${DRONE_SECRET}
      - GIN_MODE=release

  drone-agent:
    image: drone/agent:0.8
    restart: always
    depends_on: [ drone-server ]
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - DRONE_SERVER=drone-server:9000
      - DRONE_SECRET=${DRONE_SECRET}

All variable values are stored in .env file and are correctly passed to running containers. Trying to run a build using private Github repository. When pushing to repository for the first time build starts and fails with the following error (i.e. build fails): Then after clicking on Restart button seeing another screen (i.e. build is pending):

Having the following containers running on the same machine:

root@ci:~# docker ps -a
CONTAINER ID        IMAGE               COMMAND               CREATED             STATUS              PORTS                                                             NAMES
94e6a266e09d        drone/agent:0.8     "/bin/drone-agent"    2 hours ago         Up 2 hours                                                                            root_drone-agent_1
7c7d9f93a532        drone/drone:0.8     "/bin/drone-server"   2 hours ago         Up 2 hours          80/tcp, 443/tcp, 0.0.0.0:9000->9000/tcp, 0.0.0.0:8080->8000/tcp   root_drone-server_1

Even with DRONE_DEBUG=true the only log entry in agent log is:

2017/09/10 15:11:54 pipeline: request next execution

So I think for some reason my agent does not get the build from the queue. I noticed that latest Drone versions are using GRPC instead of WebSockets.

So how to get the build started? What I am missing here?

Answer 1

The reason of the issue - wrong .drone.yml file. Only the first red screen should be shown in that case. Showing pending and Restart button for incorrect YAML is a Drone issue.