Deploying inertia on rails app on a Hetzner VPS using Kamal 2

[tardy frigate]

Hey folks! Tried deploying a sample inertia react on rails project on Hetzner VPS using Kamal 2 and was facing issues with the dockerfile.

Could you suggest a cookbook style set of instructions for the same?

[midnight thorn]

Hello Shreyas, i have deploy some apps with kamal

I can share the dockerfile to you

For this i am using rails 8 with thurster

[tardy frigate]

Hey Duepe! Thanks for this, I will try it out and get back 🙂

[turbid geyser]

https://github.com/inertiajs/inertia-rails/pull/167 this PR also might help 👀

[tardy frigate]

Thanks @turbid geyser I’m just a bit new to this and was wondering if the PR is merged to the main? Does that mean that there are some revisions left before being integrated into the inertia rails official documentation?

[turbid geyser]

Yeah, there's one note about SSR url to be resolved (you can check the comments for more info)
Let me know if the recipe works for you!

[tardy frigate]

@turbid geyser Tried making all the relevant changes based on the PR: https://github.com/inertiajs/inertia-rails/pull/167

and then kamal setup, but getting this error:

NH-LP-0104:kamal-inertia-shadcn-rails shreyas$ kamal setup
  INFO [a6b2cfbf] Running /usr/bin/env mkdir -p .kamal on 78.47.103.193
  INFO [3243668c] Running /usr/bin/env mkdir -p .kamal on 192.168.0.1
Enter passphrase for /Users/shreyas/.ssh/id_rsa:
  INFO [a6b2cfbf] Finished in 3.937 seconds with exit status 0 (successful).
  Finished all in 75.0 seconds
  ERROR (Net::SSH::ConnectionTimeout): Exception while executing on host 192.168.0.1: Net::SSH::ConnectionTimeout

This is my git repo: https://github.com/shreyas-makes/kamal-inertia-shadcn-rails

[turbid geyser]

Your ssh key requires password, so you probably need to configure ssh agent, something like this: https://github.com/basecamp/kamal/issues/589

[tardy frigate]

@turbid geyser — When asked to enter passphrase, I did enter my ssh password. I have already configured my public and private SSH keys earlier.

I had even tried deploying it with this setup for a plain vanilla rails app here and it worked well: https://github.com/shreyas-makes/razorpay

the only issue I’m facing is with the inertia/ssr setup which is not being deployed, when I try ‘Kamal setup’ on this project (inertia on rails with Kamal) the terminal is just frozen in time

[turbid geyser]

Hmm i think you should update vite host from 192.168.0.1 to your production ip

[tardy frigate]

@turbid geyser Have updated the vite host to my production IP. Also updated the Dockerfile to have run npm instead of yarn as that was the installer I was using for my shadcn packages. Got it fixed, and kamal setup and kamal deploy works successfully.

So when I try kamal-inertia-shadcn-rails.jhanas.club, it gives me a 404 error not found.

These are the cloudflare settings:

A
(DNS only | auto TTL)
jhanas.club
points to 78.47.103.193.
A
(DNS only | auto TTL)
kamal-inertia-shadcn-rails.jhanas.club
points to 78.47.103.193.
A
(DNS only | auto TTL)
www.jhanas.club
points to 78.47.103.193.
AAAA
(DNS only | auto TTL)
jhanas.club
points to 2a01:4f8:1c1b:abe2::.
AAAA
(DNS only | auto TTL)
kamal-inertia-shadcn-rails.jhanas.club
points to 2a01:4f8:1c1b:abe2::.
AAAA
(DNS only | auto TTL)
www.jhanas.club
points to 2a01:4f8:1c1b:abe2::.

https://kamal-inertia-shadcn-rails.jhanas.club/

NH-LP-0104:kamal-inertia-shadcn-rails shreyas$ dig jhanas.club any
;; Truncated, retrying in TCP mode.

; <<>> DiG 9.10.6 <<>> jhanas.club any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2811
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;jhanas.club.            IN    ANY

;; ANSWER SECTION:
jhanas.club.        882    IN    HINFO    "RFC8482" ""

;; Query time: 24 msec
;; SERVER: fe80::8e83:94ff:fe02:fb79%15#53(fe80::8e83:94ff:fe02:fb79%15)
;; WHEN: Wed Dec 04 21:15:08 GMT 2024
;; MSG SIZE  rcvd: 61

https://github.com/shreyas-makes/kamal-inertia-shadcn-rails

[tardy frigate]

This is the dockerfile:

# syntax=docker/dockerfile:1
# check=error=true

ARG RUBY_VERSION=3.3.6
FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base

WORKDIR /rails

RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y curl libjemalloc2 libvips postgresql-client && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

ARG NODE_VERSION=22.11.0
ENV PATH=/usr/local/node/bin:$PATH
RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \
    /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \
    rm -rf /tmp/node-build-master

ENV RAILS_ENV="production" \
    BUNDLE_DEPLOYMENT="1" \
    BUNDLE_PATH="/usr/local/bundle" \
    BUNDLE_WITHOUT="development"

FROM base AS build

RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential git libpq-dev node-gyp pkg-config python-is-python3 && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

COPY .ruby-version Gemfile Gemfile.lock ./
RUN bundle install && \
    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
    bundle exec bootsnap precompile --gemfile

COPY package.json package-lock.json ./
RUN npm ci

COPY . .

RUN bundle exec bootsnap precompile app/ lib/

RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile

RUN rm -rf node_modules

FROM base

COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
COPY --from=build /rails /rails

RUN groupadd --system --gid 1000 rails && \
    useradd rails --uid 1000 --gid 1000 --create-home --shell /bin/bash && \
    chown -R rails:rails db log storage tmp storage
USER 1000:1000

ENTRYPOINT ["/rails/bin/docker-entrypoint"]

EXPOSE 80
CMD ["./bin/thrust", "./bin/rails", "server"]

[turbid geyser]

https://kamal-inertia-shadcn-rails.jhanas.club/inertia-example

you probably want to define a root route: https://guides.rubyonrails.org/routing.html#using-root

[tardy frigate]

Such a rookie mistake! Thanks for bearing with this

I can’t believe it worked, thanks a ton @turbid geyser 😇