Monitor HTTP(S) URL Endpoints Using Ciao
Monitor HTTP(S) URL Endpoints Using Ciao

Monitor HTTP(S) URL Endpoints Using Ciao

- ciao checks HTTP(S) URL endpoints for a HTTP status code (or errors on the lower TCP stack) and sends a notification on status change via E-Mail or Webhooks.

Dockerfile

FROM ruby:2.6.5-alpine

# for postgres: postgresql-dev
RUN apk add --no-cache \
sqlite-dev \
tzdata \
yarn

WORKDIR /app

ARG RACK_ENV=production
ENV RACK_ENV=$RACK_ENV

ADD Gemfile* /app/
RUN set -x \
&& apk add --no-cache --virtual .build-deps \
build-base \
libxml2-dev \
libxslt-dev \
&& gem install bundler \
&& bundle install --without development:test --jobs 20 -j"$(nproc)" --retry 3 \
# Remove unneeded files (cached *.gem, *.o, *.c)
&& rm -rf \
/usr/local/bundle/cache/*.gem \
/usr/local/bundle/gems/**/*.c \
/usr/local/bundle/gems/**/*.o \
&& apk del .build-deps

COPY package.json yarn.lock /app/
RUN set -x \
&& yarn install \
&& rm -rf /tmp/*

COPY . ./

# The command '/bin/sh -c rake assets:precompile' needs the RAILS_MASTER_KEY to be set!?
# https://github.com/rails/rails/issues/32947
#
# Added xz-libs (should be only build-dep) because nokogiri needs liblzma.so.5
# during rake tasks (eg. assets-precompile)
RUN set -x \
&& apk add --no-cache xz-libs \
&& SECRET_KEY_BASE=foo bundle exec rake assets:precompile \
# Remove folders not needed in resulting image
&& rm -rf \
/tmp/* \
app/assets \
lib/assets \
node_modules \
spec \
tmp/cache \
vendor/assets

ENV RAILS_LOG_TO_STDOUT=true
ENV RAILS_SERVE_STATIC_FILES=true
ENV EXECJS_RUNTIME=Disabled

EXPOSE 3000

VOLUME /app/db/sqlite

CMD ["./start.sh"]
  • Build image
docker build -t alarm-ciao .
version: "3"
services:
ciao:
image: alarm-ciao
container_name: ciao
ports:
- '3000:3000'
environment:
- 'CIAO_WEBHOOK_ENDPOINT_1=https://hooks.slack.com/services/T1111TT1/A11AA1AAAA1/aAAaAAA11AAAa1AaAAAaAAA1'
- 'CIAO_WEBHOOK_PAYLOAD_1={"username":"Ciao Check","attachments":[{"fallback":"Required plain-text summary of the attachment.","pretext":"__log_level__","color":"__color__","text":"__time_stamp__","title":"__name__ Status code (__status_after__)","footer":"__url__","footer_icon":"https://miro.medium.com/fit/c/262/262/2*sN7hp_jv8UsChU50y3e6ag.png"}]}'
volumes:
- /opt/ciao/data:/app/db/sqlite/
  • Notes: The __log_level__, __color__, __name__, __status_after__, __url__, __time_stamp__ will be replaced through code
  • Start docker container
docker-compose up -d
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  • Add fake URL and real URL to test
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  • Receive alarm through slack-channel
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Read More

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