I'm fairly new to kubernetes and I'm trying to orchestrate my rails app using minikube on my MacBook. My app includes MySQL, Redis and Sidekiq. I'm running webapp, sidekiq, redis and database in isolated pods. Sidekiq pod is not connecting to redis pod.
kubectl logs of sidekiq pod says this:
2020-09-15T14:01:16.978Z 1 TID-gnaz4yzs0 INFO: Booting Sidekiq 4.2.10 with redis options {:url=>"redis://redis:6379/0"}2020-09-15T14:01:18.475Z 1 TID-gnaz4yzs0 INFO: Running in ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-linux]2020-09-15T14:01:18.475Z 1 TID-gnaz4yzs0 INFO: See LICENSE and the LGPL-3.0 for licensing details.2020-09-15T14:01:18.475Z 1 TID-gnaz4yzs0 INFO: Upgrade to Sidekiq Pro for more features and support: http://sidekiq.org/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:459: warning: constant ::Fixnum is deprecatedError connecting to Redis on redis:6379 (Errno::ECONNREFUSED)/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:345:in `rescue in establish_connection'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:330:in `establish_connection'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:101:in `block in connect'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:293:in `with_reconnect'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:100:in `connect'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:364:in `ensure_connected'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:221:in `block in process'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:306:in `logging'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:220:in `process'/usr/local/bundle/gems/redis-3.3.1/lib/redis/client.rb:120:in `call'/usr/local/bundle/gems/redis-3.3.1/lib/redis.rb:251:in `block in info'/usr/local/bundle/gems/redis-3.3.1/lib/redis.rb:58:in `block in synchronize'/usr/local/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'/usr/local/bundle/gems/redis-3.3.1/lib/redis.rb:58:in `synchronize'/usr/local/bundle/gems/redis-3.3.1/lib/redis.rb:250:in `info'/usr/local/bundle/gems/sidekiq-4.2.10/lib/sidekiq.rb:113:in `block in redis_info'/usr/local/bundle/gems/sidekiq-4.2.10/lib/sidekiq.rb:95:in `block in redis'/usr/local/bundle/gems/connection_pool-2.2.3/lib/connection_pool.rb:63:in `block (2 levels) in with'/usr/local/bundle/gems/connection_pool-2.2.3/lib/connection_pool.rb:62:in `handle_interrupt'/usr/local/bundle/gems/connection_pool-2.2.3/lib/connection_pool.rb:62:in `block in with'/usr/local/bundle/gems/connection_pool-2.2.3/lib/connection_pool.rb:59:in `handle_interrupt'/usr/local/bundle/gems/connection_pool-2.2.3/lib/connection_pool.rb:59:in `with'/usr/local/bundle/gems/sidekiq-4.2.10/lib/sidekiq.rb:92:in `redis'/usr/local/bundle/gems/sidekiq-4.2.10/lib/sidekiq.rb:106:in `redis_info'/usr/local/bundle/gems/sidekiq-4.2.10/lib/sidekiq/cli.rb:71:in `run'/usr/local/bundle/gems/sidekiq-4.2.10/bin/sidekiq:12:in `<top (required)>'/usr/local/bundle/bin/sidekiq:29:in `load'/usr/local/bundle/bin/sidekiq:29:in `<main>'My webapp.yaml
apiVersion: apps/v1kind: Deploymentmetadata: name: checklist-deploymentspec: replicas: 2 template: metadata: labels: app: railsapp spec: containers: - name: webapp image: masettyabhishek/checklist:latest command: ["rails", "s", "-p", "3001", "-b", "0.0.0.0", "-e", "PRODUCTION"] ports: - name: checklist-port containerPort: 3001 env: - name: MYSQL_HOST value: database-service - name: MYSQL_USER value: root - name: MYSQL_PASSWORD value: Mission2019 - name: MYSQL_DATABASE value: checklist - name: MYSQL_ROOT_PASSWORD value: Mission2019 - name: REDIS_URL value: redis - name: REDIS_PORT value: "6379" selector: matchLabels: app: railsappwebapp-service.yaml
apiVersion: v1kind: Servicemetadata: name: webapp-servicespec: ports: - port: 3001 protocol: TCP type: NodePort selector: app: railsappsidekiq.yaml
apiVersion: apps/v1kind: Deploymentmetadata: name: sidekiq-deploymentspec: replicas: 1 template: metadata: labels: instance: sidekiq spec: containers: - name: sidekiq image: masettyabhishek/checklist:latest command: ["sidekiq", "-C", "config/sidekiq.yml"] env: - name: MYSQL_HOST value: database-service - name: MYSQL_USER value: root - name: MYSQL_PASSWORD value: Mission2019 - name: MYSQL_DATABASE value: checklist - name: MYSQL_ROOT_PASSWORD value: Mission2019 - name: REDIS_URL value: redis - name: REDIS_PORT value: "6379" ports: - name: redis-port containerPort: 6379 selector: matchLabels: instance: sidekiqredis.yaml
apiVersion: v1kind: Podmetadata: name: redis-podspec: containers: - name: redis image: redis:alpine command: ["redis-server"] ports: - containerPort: 6379---apiVersion: v1kind: Servicemetadata: name: redisspec: selector: name: redis-pod instance: sidekiq app: railsapp type: NodePort ports: - port: 6379This is sidekiq.yml in my rails app
Sidekiq.configure_server do |config| config.redis = { url: "redis://#{ENV['REDIS_URL']}:#{ENV['REDIS_PORT']}/0"}endSidekiq.configure_client do |config| config.redis = { url: "redis://#{ENV['REDIS_URL']}:#{ENV['REDIS_PORT']}/0"}endThis is Dockerfile if that helps to answer the question.
FROM ubuntu:16.04ENV RUBY_MAJOR="2.6" \ RUBY_VERSION="2.6.3" \ RUBYGEMS_VERSION="3.0.8" \ BUNDLER_VERSION="1.17.3" \ RAILS_VERSION="5.2.1" \ RAILS_ENV="production" \ GEM_HOME="/usr/local/bundle"ENV BUNDLE_PATH="$GEM_HOME" \ BUNDLE_BIN="$GEM_HOME/bin" \ BUNDLE_SILENCE_ROOT_WARNING=1 \ BUNDLE_APP_CONFIG="$GEM_HOME"ENV PATH="$BUNDLE_BIN:$GEM_HOME/bin:$GEM_HOME/gems/bin:$PATH"USER rootRUN apt-get update && \ apt-get -y install sudoRUN echo "%sudo ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers && \ addgroup --gid 1024 stars && \ useradd -G stars,sudo -d /home/user --shell /bin/bash -m userRUN mkdir -p /usr/local/etc \&& echo 'install: --no-document'>> /usr/local/etc/gemrc \&& echo 'update: --no-document'>> /usr/local/etc/gemrcUSER userRUN sudo apt-get -y install --no-install-recommends vim make gcc zlib1g-dev autoconf build-essential libssl-dev libsqlite3-dev \ curl htop unzip mc openssh-server openssl bison libgdbm-dev ruby git libmysqlclient-dev tzdata mysql-clientRUN sudo rm -rf /var/lib/apt/lists/* \&& sudo curl -fSL -o ruby.tar.gz "http://cache.ruby-lang.org/pub/ruby/$RUBY_MAJOR/ruby-$RUBY_VERSION.tar.gz" \&& sudo mkdir -p /usr/src/ruby \&& sudo tar -xzf ruby.tar.gz -C /usr/src/ruby --strip-components=1 \&& sudo rm ruby.tar.gzUSER rootRUN cd /usr/src/ruby \&& { sudo echo '#define ENABLE_PATH_CHECK 0'; echo; cat file.c; } > file.c.new && mv file.c.new file.c \&& autoconf \&& ./configure --disable-install-docUSER userRUN cd /usr/src/ruby \&& sudo make -j"$(nproc)" \&& sudo make install \&& sudo gem update --system $RUBYGEMS_VERSION \&& sudo rm -r /usr/src/rubyRUN sudo gem install bundler --version "$BUNDLER_VERSION"RUN sudo mkdir -p "$GEM_HOME" "$BUNDLE_BIN" \&& sudo chmod 777 "$GEM_HOME" "$BUNDLE_BIN" \&& sudo gem install rails --version "$RAILS_VERSION"RUN mkdir -p ~/.ssh && \ chmod 0700 ~/.ssh && \ ssh-keyscan github.com > ~/.ssh/known_hostsARG ssh_pub_keyARG ssh_prv_keyRUN echo "$ssh_pub_key" > ~/.ssh/id_rsa.pub && \ echo "$ssh_prv_key" > ~/.ssh/id_rsa && \ chmod 600 ~/.ssh/id_rsa.pub && \ chmod 600 ~/.ssh/id_rsaUSER rootRUN curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -RUN apt-get install -y nodejsUSER userWORKDIR /dataRUN sudo mkdir /data/checklistWORKDIR /data/checklistADD Gemfile Gemfile.lock ./RUN sudo chown -R user /data/checklistRUN bundle installADD . .RUN sudo chown -R user /data/checklistEXPOSE 3001ENV RAILS_SERVE_STATIC_FILES trueENV RAILS_LOG_TO_STDOUT trueRUN chmod +x ./config/docker/prepare-db.sh && sh ./config/docker/prepare-db.shENTRYPOINT ["bundle", "exec"]CMD ["sh", "./config/docker/startup.sh"]kubectl describe svc redis
➜ checklist kubectl describe svc redisName: redisNamespace: defaultLabels: <none>Annotations: <none>Selector: app=railsapp,instance=sidekiq,name=redis-podType: NodePortIP: 10.103.6.43Port: <unset> 6379/TCPTargetPort: 6379/TCPNodePort: <unset> 31886/TCPEndpoints: <none>Session Affinity: NoneExternal Traffic Policy: ClusterEvents: <none>