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bitwalker / distillery-aws-example

An example application to go with the AWS guide in the Distillery documentation
Apache License 2.0
52 stars 73 forks source link

Application Not Starting #16

Closed ccoughenour08 closed 4 years ago

ccoughenour08 commented 4 years ago

Good Afternoon @bitwalker -

The recent merge looks to have resolved all build issues. Once the application deploys, it isn't starting up. If you attempt to access the output URL, you will receive a 502 Error. If you trace from the ELB through to the EC2 instances, you will see that your target group doesn't have any valid instances. The health check, to check at port 4000, isn't successful.

If you log onto either ec2 instance, you can check for applications listening on port 4000, and nothing is there:

sudo lsof -i -P -n | grep LISTEN

Currently trying to debug the issue, it doesn't look like erlang is installed on the EC2 instance when I try to run the start script. There isn't a clear area where the original start logging was. If you get a moment, could you deploy and see if you see the same behaviour?

Thanks, C Luke Coughenour

ccoughenour08 commented 4 years ago

@bitwalker Just an update, I believe the CodePipeline thinks everything has started okay, but infact there is an erl_dump file in the /opt/apt directory showing issues.

Wed Apr 29 17:19:02 2020 Slogan: Kernel pid terminated (application_controller) ({application_start_failure,distillery_example,{{shutdown,{failed_to_start_child,'Elixir.Cluster.Supervisor',{shutdown,{failed_to_start_child,example,{#{ System version: Erlang/OTP 22 [erts-10.7.1] [source] [64-bit] [smp:1:1] [ds:1:1:10] [async-threads:1] [hipe] Compiled: Tue Apr 28 11:05:12 2020

sfairchild commented 4 years ago

I am also see the same behaviour when trying to deploy. I also tried to start the app locally but when trying to setup the DB with mix ecto.create I am getting some connection errors.

16:29:15.761 [error] GenServer #PID<0.408.0> terminating
** (ArgumentError) expected :hostname, :socket_dir, or :socket to be given
    (postgrex 0.15.3) lib/postgrex/protocol.ex:129: Postgrex.Protocol.host_and_port/1
    (postgrex 0.15.3) lib/postgrex/protocol.ex:65: Postgrex.Protocol.connect/1
    (db_connection 2.2.1) lib/db_connection/connection.ex:69: DBConnection.Connection.connect/2
    (connection 1.0.4) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib 3.10) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Last message: nil
State: Postgrex.Protocol
** (Mix) The database for Example.Repo couldn't be created: killed
caike commented 4 years ago

For those running into issues running the application, I've submitted the fixes on this PR https://github.com/bitwalker/distillery-aws-example/pull/17

bitwalker commented 4 years ago

Those fixes have been merged, so I'll close this for now. If anything else comes up, please open a new issue.