KubernetesでRailsを起動しようとするとCrashLoopBackOffになります。
KubernetesでRailsを動かしてみよう！ - Qiita
CentOS7とRails5とMySQL5.7で使う(1) - Qiita
DockerのCentOSイメージを取得して、Railsアプリを動かすまで
を参考にまずローカルでrails new sampleapp -d mysqlを作りました。
作り方
mysql5.6
yum remove mariadb-libs
rm -rf /var/lib/mysql/
yum localinstall http://dev.mysql.com/get/mysql57-community-release-el6-7.noarch.rpm
yum repolist all | grep mysql
yum -y install yum-utils
yum-config-manager --disable mysql57-community
yum-config-manager --enable mysql56-community
yum info mysql-community-server
yum -y install mysql-community-server
yum -y install mysql-devel
mysqld --version
ruby2.3
yum remove ruby
yum install -y git
yum install -y libxslt-devel libxml++-devel libxml2-devel
git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
source ~/.bash_profile
git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
cd ~/.rbenv/plugins/ruby-build
./install.sh
rbenv -v
rbenv install -l
yum install -y bzip2 gcc openssl-devel readline-devel make
rbenv install 2.3.0
rbenv rehash
rbenv global 2.3.0
ruby -v
その後
gem update --system
gem install bundler
Overwrite the executable? [yN] y
rbenv rehash
yum install epel-release
yum install nodejs npm --enablerepo=epel
yum install gcc gcc-c++
で作っています。（ruby2.3、rails5.2.2、mysql5.6です）
その後
KubernetesでRailsを動かしてみよう！ - Qiita
（ADD Gemfile /app/GemfileADD Gemfile.lock /app/Gemfile.lockを追加して）
Dockerfileを作り
FROM ruby:2.3
ENV APP_ROOT="/app"
RUN \
mkdir -p $APP_ROOT
RUN \
apt-get update -qq && \
apt-get install -y build-essential nodejs
WORKDIR $APP_ROOT
ADD Gemfile /app/Gemfile
ADD Gemfile.lock /app/Gemfile.lock
RUN \
bundle config --global build.nokogiri --use-system-libraries
ADD . $APP_ROOT
ENV RAILS_ENV production
WORKDIR $APP_ROOT
ENTRYPOINT \
bundle install && \
bin/rails db:create && \
bin/rails db:migrate && \
bin/rake assets:precompile && \
bin/rails server -p 3000 -b 0.0.0.0
でdocker imageを作り実行しました
gcloud docker -- pushして
あとサイトを参考にRuby on RailsをKubernetesでたてようと思っています。
順番通りに進めていきました
mysql-85585d4dc6-sbcck 1/1 Running 0 12m
rails-6fb8956847-x2h2w 0/1 CrashLoopBackOff 3 1m
rails-6fb8956847-x2h2wだけがCrashLoopBackOffになります。
logを見てみたんですが
watch kubectl describe rails-6fb8956847-x2h2w
error: the server doesn't have a resource type "rails-6fb8956847-x2h2w"
kubectl describe pod
Name: rails-6fb8956847-x2h2w
Namespace: default
Node: gke-cluster-1-default-pool-b5850484-j5x4/10.146.0.44
Start Time: Mon, 14 Jan 2019 19:56:16 +0000
Labels: app=rails
pod-template-hash=2964512403
Annotations: kubernetes.io/limit-ranger: LimitRanger plugin set: cpu request for container rails
Status: Running
IP: 10.16.1.11
Controlled By: ReplicaSet/rails-6fb8956847
Containers:
rails:
Container ID: docker://db2d45dd73f0e5231b8d8c6c94c5a71b69ce45aa9073c47a0fedb19d5c08c744
Image: gcr.io/balmy-geography-216916/sampleapp2:v3
Image ID: docker-pullable://gcr.io/balmy-geography-216916/sampleapp2@sha256:94148ed4c7b6c4d96b265ffef1c2d4167911272566460bfcdbc7e3651a3001dd
Port: 3000/TCP
Host Port: 0/TCP
State: Waiting
Reason: CrashLoopBackOff
Last State: Terminated
Reason: Error
Exit Code: 20
Started: Mon, 14 Jan 2019 20:08:14 +0000
Finished: Mon, 14 Jan 2019 20:08:14 +0000
Ready: False
Restart Count: 7
Requests:
cpu: 100m
Environment:
DATABASE_ROOT_PASSWORD: <set to the key 'database_root_password' in secret 'rails'> Optional: false
SECRET_KEY_BASE: <set to the key 'secret_key_base' in secret 'rails'> Optional: false
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-86ff7 (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-86ff7:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-86ff7
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 12m default-scheduler Successfully assigned rails-6fb8956847-x2h2w to gke-cluster-1-default-pool-b5850484-j5x4
Normal SuccessfulMountVolume 12m kubelet, gke-cluster-1-default-pool-b5850484-j5x4 MountVolume.SetUp succeeded for volume "default-token-86ff7"
Normal Pulling 11m (x4 over 12m) kubelet, gke-cluster-1-default-pool-b5850484-j5x4 pulling image "gcr.io/balmy-geography-216916/sampleapp2:v3"
Normal Pulled 11m (x4 over 12m) kubelet, gke-cluster-1-default-pool-b5850484-j5x4 Successfully pulled image "gcr.io/balmy-geography-216916/sampleapp2:v3"
Normal Created 11m (x4 over 12m) kubelet, gke-cluster-1-default-pool-b5850484-j5x4 Created container
Normal Started 11m (x4 over 12m) kubelet, gke-cluster-1-default-pool-b5850484-j5x4 Started container
Warning BackOff 2m36s (x44 over 12m) kubelet, gke-cluster-1-default-pool-b5850484-j5x4 Back-off restarting failed container
いままでやったこと
・rubyバージョン(2.3と2.4.1)にしてみました。
・n1-standard-2にしてみました。
・selinuxを切ってみました。
・Dockerfileの作り直し（ADD Gemfile /app/GemfileADD Gemfile.lock /app/Gemfile.lock）の追加
・sampleappフォルダのところでgem install bundlerをし、もう一度imageを作り直して
再実行。
・rubyを実験的2.4.1にあげてみてためしてみました。（下記参照）
kubectl logs <pod名>とkubectl logs --previous <pod名>
をしたところ
You must use Bundler 2 or greater with this lockfile.
とでました
rails new sampleapp -d mysql
のgemfileとgemfilelockを書きます。
Gemfile
source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
ruby '2.3.0'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.2'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.4.4', '< 0.6.0'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'mini_racer', platforms: :ruby
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'listen', '>= 3.0.5', '< 3.2'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
# Easy installation and use of chromedriver to run system tests with Chrome
gem 'chromedriver-helper'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
Gemlock
GEM
remote: https://rubygems.org/
specs:
actioncable (5.2.2)
actionpack (= 5.2.2)
nio4r (~> 2.0)
websocket-driver (>= 0.6.1)
actionmailer (5.2.2)
actionpack (= 5.2.2)
actionview (= 5.2.2)
activejob (= 5.2.2)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 2.0)
actionpack (5.2.2)
actionview (= 5.2.2)
activesupport (= 5.2.2)
rack (~> 2.0)
rack-test (>= 0.6.3)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
actionview (5.2.2)
activesupport (= 5.2.2)
builder (~> 3.1)
erubi (~> 1.4)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.3)
activejob (5.2.2)
activesupport (= 5.2.2)
globalid (>= 0.3.6)
activemodel (5.2.2)
activesupport (= 5.2.2)
activerecord (5.2.2)
activemodel (= 5.2.2)
activesupport (= 5.2.2)
arel (>= 9.0)
activestorage (5.2.2)
actionpack (= 5.2.2)
activerecord (= 5.2.2)
marcel (~> 0.3.1)
activesupport (5.2.2)
concurrent-ruby (~> 1.0, >= 1.0.2)
i18n (>= 0.7, < 2)
minitest (~> 5.1)
tzinfo (~> 1.1)
addressable (2.5.2)
public_suffix (>= 2.0.2, < 4.0)
archive-zip (0.11.0)
io-like (~> 0.3.0)
arel (9.0.0)
bindex (0.5.0)
bootsnap (1.3.2)
msgpack (~> 1.0)
builder (3.2.3)
byebug (10.0.2)
capybara (3.12.0)
addressable
mini_mime (>= 0.1.3)
nokogiri (~> 1.8)
rack (>= 1.6.0)
rack-test (>= 0.6.3)
regexp_parser (~> 1.2)
xpath (~> 3.2)
childprocess (0.9.0)
ffi (~> 1.0, >= 1.0.11)
chromedriver-helper (2.1.0)
archive-zip (~> 0.10)
nokogiri (~> 1.8)
coffee-rails (4.2.2)
coffee-script (>= 2.2.0)
railties (>= 4.0.0)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.12.2)
concurrent-ruby (1.1.4)
crass (1.0.4)
erubi (1.8.0)
execjs (2.7.0)
ffi (1.10.0)
globalid (0.4.2)
activesupport (>= 4.2.0)
i18n (1.5.2)
concurrent-ruby (~> 1.0)
io-like (0.3.0)
jbuilder (2.8.0)
activesupport (>= 4.2.0)
multi_json (>= 1.2)
listen (3.1.5)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
ruby_dep (~> 1.2)
loofah (2.2.3)
crass (~> 1.0.2)
nokogiri (>= 1.5.9)
mail (2.7.1)
mini_mime (>= 0.1.1)
marcel (0.3.3)
mimemagic (~> 0.3.2)
method_source (0.9.2)
mimemagic (0.3.3)
mini_mime (1.0.1)
mini_portile2 (2.4.0)
minitest (5.11.3)
msgpack (1.2.6)
multi_json (1.13.1)
mysql2 (0.5.2)
nio4r (2.3.1)
nokogiri (1.10.1)
mini_portile2 (~> 2.4.0)
public_suffix (3.0.3)
puma (3.12.0)
rack (2.0.6)
rack-test (1.1.0)
rack (>= 1.0, < 3)
rails (5.2.2)
actioncable (= 5.2.2)
actionmailer (= 5.2.2)
actionpack (= 5.2.2)
actionview (= 5.2.2)
activejob (= 5.2.2)
activemodel (= 5.2.2)
activerecord (= 5.2.2)
activestorage (= 5.2.2)
activesupport (= 5.2.2)
bundler (>= 1.3.0)
railties (= 5.2.2)
sprockets-rails (>= 2.0.0)
rails-dom-testing (2.0.3)
activesupport (>= 4.2.0)
nokogiri (>= 1.6)
rails-html-sanitizer (1.0.4)
loofah (~> 2.2, >= 2.2.2)
railties (5.2.2)
actionpack (= 5.2.2)
activesupport (= 5.2.2)
method_source
rake (>= 0.8.7)
rb-fsevent (0.10.3)
rb-inotify (0.10.0)
ffi (~> 1.0)
regexp_parser (1.3.0)
ruby_dep (1.5.0)
rubyzip (1.2.2)
sass (3.7.3)
sass-listen (~> 4.0.0)
sass-listen (4.0.0)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
sass-rails (5.0.7)
railties (>= 4.0.0, < 6)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
selenium-webdriver (3.141.0)
childprocess (~> 0.5)
rubyzip (~> 1.2, >= 1.2.2)
spring (2.0.2)
activesupport (>= 4.2)
spring-watcher-listen (2.0.1)
listen (>= 2.7, < 4.0)
spring (>= 1.2, < 3.0)
sprockets (3.7.2)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.2.1)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
thor (0.20.3)
thread_safe (0.3.6)
tilt (2.0.9)
turbolinks (5.2.0)
turbolinks-source (~> 5.2)
turbolinks-source (5.2.0)
tzinfo (1.2.5)
thread_safe (~> 0.1)
uglifier (4.1.20)
execjs (>= 0.3.0, < 3)
web-console (3.7.0)
actionview (>= 5.0)
activemodel (>= 5.0)
bindex (>= 0.4.0)
railties (>= 5.0)
websocket-driver (0.7.0)
websocket-extensions (>= 0.1.0)
websocket-extensions (0.1.3)
xpath (3.2.0)
nokogiri (~> 1.8)
PLATFORMS
ruby
DEPENDENCIES
bootsnap (>= 1.1.0)
byebug
capybara (>= 2.15)
chromedriver-helper
coffee-rails (~> 4.2)
jbuilder (~> 2.5)
listen (>= 3.0.5, < 3.2)
mysql2 (>= 0.4.4, < 0.6.0)
puma (~> 3.11)
rails (~> 5.2.2)
sass-rails (~> 5.0)
selenium-webdriver
spring
spring-watcher-listen (~> 2.0.0)
turbolinks (~> 5)
tzinfo-data
uglifier (>= 1.3.0)
web-console (>= 3.3.0)
RUBY VERSION
ruby 2.3.0p0
BUNDLED WITH
2.0.1
-ruby2.4.1
にあげたときのDockerfileでは
FROM ruby:2.4.1-alpine
ENV APP_ROOT="/app"
RUN \
mkdir -p $APP_ROOT
RUN \
apk update && apk upgrade && apk add --update --no-cache alpine-sdk tzdata mysql-dev nodejs
WORKDIR $APP_ROOT
ADD Gemfile /app/Gemfile
ADD Gemfile.lock /app/Gemfile.lock
RUN \
bundle config --global build.nokogiri --use-system-libraries
ADD . $APP_ROOT
ENV RAILS_ENV production
WORKDIR $APP_ROOT
ENTRYPOINT \
bundle install && \
bin/rails db:create && \
bin/rails db:migrate && \
bin/rake assets:precompile && \
bin/rails server -p 3000 -b 0.0.0.0
でimageを作りました。
その後実行したら下記のエラーがでました
You must use Bundler 2 or greater with this lockfile.
すいません。手詰まりです。ruby2.3でも2.4でもどちらでもかまいません。
CrashLoopBackOffエラーをなんとか直してRunningにかえたいです。
どうか教えてください。
またKubernetesでRailsを起動しようといろいろなサイトみているんですが、
など参考にしているんですがなかなかうまくいきません。
これ動いたよっていうサイトあればすいませんが是非教えてください。
こちらもお願いします。