Rails API failed to deploy - 'assets:precompile'

denvermullets · September 11, 2022, 3:40pm

i’m trying to deploy my Rails API and ran into an issue:

[+] Building 1.7s (0/1)                                                                                         
[+] Building 6.7s (24/24) FINISHED                                                                              
 => [internal] load remote build context                                                                   0.0s
 => copy /context /                                                                                        0.1s
 => resolve image config for docker.io/docker/dockerfile:experimental                                      0.2s
 => CACHED docker-image://docker.io/docker/dockerfile:experimental@<removed>
 => [internal] load metadata for quay.io/evl.ms/fullstaq-ruby:3.1.2-jemalloc-slim                          0.1s
 => [base 1/6] FROM quay.io/evl.ms/fullstaq-ruby:3.1.2-jemalloc-slim@<removed> 0.0s
 => CACHED [base 2/6] RUN mkdir /app                                                                       0.0s
 => CACHED [base 3/6] WORKDIR /app                                                                         0.0s
 => CACHED [base 4/6] RUN mkdir -p tmp/pids                                                                0.0s
 => CACHED [base 5/6] RUN curl https://get.volta.sh | bash                                                 0.0s
 => CACHED [base 6/6] RUN volta install node@16.14.2 && volta install yarn                                 0.0s
 => CACHED [stage-4 1/6] RUN --mount=type=cache,id=prod-apt-cache,sharing=locked,target=/var/cache/apt     0.0s
 => CACHED [build_deps 1/1] RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt   0.0s
 => CACHED [gems 1/3] RUN gem install -N bundler -v 2.3.22                                                 0.0s
 => CACHED [gems 2/3] COPY Gemfile* ./                                                                     0.0s
 => CACHED [gems 3/3] RUN bundle install &&  rm -rf vendor/bundle/ruby/*/cache                             0.0s
 => CACHED [stage-4 2/6] COPY --from=gems /app /app                                                        0.0s
 => CACHED [node_modules 1/3] COPY package*json ./                                                         0.0s
 => CACHED [node_modules 2/3] COPY yarn.* ./                                                               0.0s
 => CACHED [node_modules 3/3] RUN if [ -f "yarn.lock" ]; then     yarn install;     elif [ -f "package-lo  0.0s
 => CACHED [stage-4 3/6] COPY --from=node_modules /app/node_modules /app/node_modules                      0.0s
 => [stage-4 4/6] COPY . .                                                                                 0.1s
 => [stage-4 5/6] RUN chmod +x /app/bin/* &&     sed -i 's/ruby.exe/ruby/' /app/bin/* &&     sed -i '/^#!  0.3s
 => ERROR [stage-4 6/6] RUN bin/rails fly:build                                                            5.6s
------                                                                                                          
 > [stage-4 6/6] RUN bin/rails fly:build:                                                                       
#24 5.504 rails aborted!                                                                                        
#24 5.504 Don't know how to build task 'assets:precompile' (See the list of available tasks with `rails --tasks`)                                                                                                               
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task_manager.rb:59:in `[]'                    
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:66:in `lookup_prerequisite'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:62:in `block in prerequisite_tasks'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:62:in `map'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:62:in `prerequisite_tasks'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:241:in `invoke_prerequisites'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:218:in `block in invoke_with_call_chain'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `synchronize'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `invoke_with_call_chain'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/task.rb:188:in `invoke'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:160:in `invoke_task'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block (2 levels) in top_level'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `each'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block in top_level'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:125:in `run_with_threads'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:110:in `top_level'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/railties-7.0.3.1/lib/rails/commands/rake/rake_command.rb:24:in `block (2 levels) in perform'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/railties-7.0.3.1/lib/rails/commands/rake/rake_command.rb:24:in `block in perform'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/rake_module.rb:59:in `with_application'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/railties-7.0.3.1/lib/rails/commands/rake/rake_command.rb:18:in `perform'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/railties-7.0.3.1/lib/rails/command.rb:51:in `invoke'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/railties-7.0.3.1/lib/rails/commands.rb:18:in `<main>'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/bootsnap-1.13.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
#24 5.504 /app/vendor/bundle/ruby/3.1.0/gems/bootsnap-1.13.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
#24 5.505 Tasks: TOP => fly:build
#24 5.505 (See full trace by running task with --trace)

so, i don’t think my API has assets like a normal rails app, so is it ok to comment out the build action in the fly.io rake file?

# commands used to deploy a Rails application
namespace :fly do
  # BUILD step:
  #  - changes to the filesystem made here DO get deployed
  #  - NO access to secrets, volumes, databases
  #  - Failures here prevent deployment
  task :build => 'assets:precompile'

  # RELEASE step:
  #  - changes to the filesystem made here are DISCARDED
  #  - full access to secrets, databases
  #  - failures here prevent deployment
  task :release => 'db:migrate'

  # SERVER step:
  #  - changes to the filesystem made here are deployed
  #  - full access to secrets, databases
  #  - failures here result in VM being stated, shutdown, and rolled back
  #    to last successful deploy (if any).
  task :server do
    sh 'bin/rails server'
  end
end

rubys · September 11, 2022, 3:43pm

Don’t comment out the entire line. If you want a build step that does nothing, replace that line with:

task :build

If you have things you would later like to add, you can make that task do shell commands or arbitrary ruby code.

denvermullets · September 11, 2022, 3:50pm

i’ll give that a shot! thank you!

hope the new gig is going well

rubys · September 11, 2022, 3:57pm

hope the new gig is going well

I’m having fun!

I don’t have much experience with an Rails API app. Is there a convenient way to detect such an app? If so, I can adjust the generated files to better match what is required.

denvermullets · September 11, 2022, 4:30pm

that’s great! i’m not sure how we could determine that, actually.

well, some success, got past that step and now running into OOM errors.

i can create a new thread but even after changing the max threads to 2 and max workers, and using a dedicated server it’s still showing this:

Recent Events
TIMESTAMP               TYPE            MESSAGE                         
2022-09-11T16:12:37Z    Received        Task received by client        
2022-09-11T16:12:37Z    Task Setup      Building Task Directory        
2022-09-11T16:12:54Z    Started         Task started by client         
2022-09-11T16:15:12Z    Terminated      OOM Killed                     
2022-09-11T16:15:12Z    Restarting      Task restarting in 1.248129751s
2022-09-11T16:15:21Z    Started         Task started by client         
2022-09-11T16:15:57Z    Terminated      OOM Killed                     
2022-09-11T16:15:57Z    Restarting      Task restarting in 1.245580871s
2022-09-11T16:16:05Z    Started         Task started by client         

2022-09-11T16:15:20Z   [info]Configuring virtual machine
2022-09-11T16:15:20Z   [info]Pulling container image
2022-09-11T16:15:20Z   [info]Unpacking image
2022-09-11T16:15:20Z   [info]Preparing kernel init
2022-09-11T16:15:20Z   [info]Configuring firecracker
2022-09-11T16:15:21Z   [info]Starting virtual machine
2022-09-11T16:15:21Z   [info]Starting init (commit: 249766e)...
2022-09-11T16:15:21Z   [info]Preparing to run: `/bin/bash -c ${SERVER_COMMAND}` as root
2022-09-11T16:15:21Z   [info]2022/09/11 16:15:21 listening on [fdaa:0:9d64:a7b:ab2:f7cf:7880:2]:22 (DNS: [fdaa::3]:53)
2022-09-11T16:15:23Z   [info]bin/rails server
2022-09-11T16:15:54Z   [info][   33.316751] Out of memory: Killed process 515 (ruby) total-vm:191068kB, anon-rss:101340kB, file-rss:4kB, shmem-rss:0kB, UID:0 pgtables:392kB oom_score_adj:0
2022-09-11T16:15:54Z   [info]=> Booting Puma
2022-09-11T16:15:54Z   [info]=> Rails 7.0.3.1 application starting in production
2022-09-11T16:15:54Z   [info]=> Run `bin/rails server --help` for more startup options
2022-09-11T16:15:55Z   [info]Starting clean up.
2022-09-11T16:15:55Z   [info]Process appears to have been OOM killed!
2022-09-11T16:16:02Z   [info]Starting instance
2022-09-11T16:16:04Z   [info]Configuring virtual machine
2022-09-11T16:16:04Z   [info]Pulling container image
2022-09-11T16:16:05Z   [info]Unpacking image
2022-09-11T16:16:05Z   [info]Preparing kernel init
2022-09-11T16:16:05Z   [info]Configuring firecracker
2022-09-11T16:16:05Z   [info]Starting virtual machine
2022-09-11T16:16:05Z   [info]Starting init (commit: 249766e)...
2022-09-11T16:16:05Z   [info]Preparing to run: `/bin/bash -c ${SERVER_COMMAND}` as root
2022-09-11T16:16:05Z   [info]2022/09/11 16:16:05 listening on [fdaa:0:9d64:a7b:ab2:f7cf:7880:2]:22 (DNS: [fdaa::3]:53)
2022-09-11T16:16:08Z   [info]bin/rails server
2022-09-11T16:17:24Z   [info][   78.877429] Out of memory: Killed process 515 (ruby) total-vm:199260kB, anon-rss:109704kB, file-rss:4kB, shmem-rss:0kB, UID:0 pgtables:408kB oom_score_adj:0
2022-09-11T16:17:24Z   [info]Starting clean up.
2022-09-11T16:17:24Z   [info]Process appears to have been OOM killed!
--> v1 failed - Failed due to unhealthy allocations - no stable job version to auto revert to and deploying as v2 

--> Troubleshooting guide at https://fly.io/docs/getting-started/troubleshooting/
Error abort

rubys · September 11, 2022, 4:53pm

I’ve not had a lot of luck deploying anything but trivial Rails apps on fly.io’s free tier. See: Getting Started · Fly Docs for information on increasing memory and the pricing implications of doing so.

denvermullets · September 11, 2022, 6:18pm

ah yeah, i thought i had selected a higher tier when i initially deployed it but that was indeed my issue. went into my dashboard and scaled it up to the tier i wanted and it deployed successfully!

thanks again for all your help, really do appreciate it!

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Rails API failed to deploy - 'assets:precompile'

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