I have simple rails application with docker-compose.yml file.
It consists from two containers - db container with PostgreSQL and web container with rails app.
In dockerfile for web part I have such lines in CMD
CMD RAILS_ENV=production rake db:create db:migrate && \
bundle exec rails s -p 3000 -b '0.0.0.0' --environment=production
So in line rake db:create db:migrate I create db if it is a first run of db container, and run migrate.
But if it is only update of web part - I need only to run db:migrate, and db:create (as it should) give me error
ERROR: database "myapp_production" already exists
STATEMENT: CREATE DATABASE "myapp_production" ENCODING = 'unicode'
Everything working fine, but I think there is a better way.
What is a best way to handle this situation?
I have the same development stack and here is that I'm doing.
Here is a Dockerfile for postgres which I'm extend:
FROM postgres:9.4
ADD db/init.sql /docker-entrypoint-initdb.d/
EXPOSE 5432
CMD ["postgres"]
From the docker postgres documentation:
If you would like to do additional initialization in an image derived
from this one, add one or more *.sql or *.sh scripts under
/docker-entrypoint-initdb.d (creating the directory if necessary).
After the entrypoint calls initdb to create the default postgres user
and database, it will run any *.sql files and source any *.sh scripts
found in that directory to do further initialization before starting
the service.
My init.sql:
CREATE USER database_user;
CREATE DATABASE database_production;
GRANT ALL PRIVILEGES ON DATABASE database_production TO database_user;
After that my RUN command in the web container points to the run.sh script:
#!/usr/bin/env bash
echo "Bundling gems"
bundle install --jobs 8 --retry 3
echo "Clearing logs"
bin/rake log:clear
echo "Run migrations"
bundle exec rake db:migrate
echo "Seed database"
bundle exec rake db:seed
echo "Removing contents of tmp dirs"
bin/rake tmp:clear
echo "Starting app server ..."
bundle exec rails s -p 3000 -b '0.0.0.0'
That's it. My database created in the db container, and web app only does migration.
I'm running a Rails 4.2 app on Elastic Beanstalk, and need to set log permissions and create the /tmp/uploads folder (plus permissions) after deploy.
I was running two ebextensions scripts to do this, but on some occasions they would fail because the folder /var/app/current/ didn't yet exist.
I'm presuming this is because the permissions and/or folders should be created on /app/ondeck/ first so that EB can copy the contents over to /var/app/current/, but I'm interested to see if there's a recommended and more foolproof approach to doing this?
For reference, my two ebextension scripts were:
commands:
01_set_log_permissions:
command: "chmod 755 /var/app/current/log/*"
and
commands:
01_create_uploads_folder:
command: "mkdir -p /var/app/current/tmp/uploads/"
02_set_folder_permission:
command: "chmod 755 /var/app/current/tmp/uploads/"
Thanks,
Dan
you should probably use files tag and not command:
commands:
create_post_dir:
command: "mkdir /opt/elasticbeanstalk/hooks/appdeploy/post"
ignoreErrors: true
files:
"/opt/elasticbeanstalk/hooks/appdeploy/post/99_make_changes.sh":
mode: "000777"
content: |
#!/bin/bash
mkdir -p /var/app/current/tmp/uploads/
chmod 755 /var/app/current/tmp/uploads/
it will be triggered after app deploy finished
I've used the below stpes:
Create a folder .ebextensions
Creta a file .config
Move .config to .ebextensions
Edit the file .config, it must have the below sintaxe
commands:
command1:
command: mkdir /opt/jenkins
command2:
command: chmod 644 /opt/jenkins
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/customize-containers-ec2.html#linux-commands
* Pay Attention *
You cannot run again command1 "mkdir /opt/jenkins", you will have a error, so you must do a test before.
What about using Container Commands?
http://docs.aws.amazon.com/ko_kr/elasticbeanstalk/latest/dg/customize-containers-ec2.html#linux-container-commands
You can use the container_commands key to execute commands for your container. The commands in container_commands are processed in alphabetical order by name. They run after the application and web server have been set up and the application version file has been extracted, but before the application version is deployed. They also have access to environment variables such as your AWS security credentials.
Container commands are run from the staging directory, where your source code is extracted prior to being deployed to the application server. Any changes you make to your source code in the staging directory with a container command will be included when the source is deployed to its final location.
container_commands:
01_set_log_permissions:
command: "chmod 755 log/*"
and
container_commands:
01_create_uploads_folder:
command: "mkdir -p tmp/uploads/"
02_set_folder_permission:
command: "chmod 755 tmp/uploads/"
Just trying to set up rails app on ubuntu to do some low level dev work without going through the hassle of bothering our main devs. However at the very end of the process, I run rails s command. I get landing page on localhost:3000 and can get through the pages without direct call to database. However when I go to any page that gets the data from db, it gives me following error:
ActiveRecord::StatementInvalid in WantsController#new
PG::Error: ERROR: relation "geometry_columns" does not exist
LINE 1: SELECT * FROM geometry_columns WHERE f_table_name='wants'
^
: SELECT * FROM geometry_columns WHERE f_table_name='wants'
Now, no idea what I'm doing wrong. Here are the steps I'm taking:
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" >> /etc/apt/sources.list'
wget --quiet -O - http://apt.postgresql.org/pub/repos/apt/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.3-postgis pgadmin3 postgresql-contrib postgresql-server-dev-9.3
sudo -u postgres psql
postgres=# CREATE EXTENSION adminpack;
postgres=# CREATE EXTENSION postgis;
postgres=# \q
postgres=# CREATE USER abc WITH PASSWORD 'abc';
postgres=# CREATE DATABASE abc;
postgres=# CREATE DATABASE abc_development;
pg_restore --verbose --clean --no-acl --no-owner -h localhost -U abc -d abc abc-20131217-09.pgdmp
pg_restore --verbose --clean --no-acl --no-owner -h localhost -U abc -d abc_development abc_development-20131217-09.pgdmp
Then navigate to cloned git folder and execute bundle and rails s
Here's the database.yml:
development: &dev
# adapter: postgresql
database: abc_development
username: abc
password: abc
host: localhost
encoding: utf8
postgis_extension: true
schema_search_path: public,postgis
adapter: postgis
encoding: utf8
postgis_extension: postgis
production:
adapter: postgis
database: abc
username: abc
password: oTSZ1gQdwsFXWIUZsehj
host: localhost
encoding: utf8
postgis_extension: true
schema_search_path: public,postgis
postgis_extension: postgis
Any ideas where it is going wrong? Help would be much appreciated.
Okay, I solved it somehow. Don't really know what did the trick but basically, it involved giving superuser privileges to "abc" user, then running db:create, db:migrate, importing db file from our site backups and running migrations again.
The error message is telling you that those tables do not exist in your database. You need to create migrations(basically just hunks of sql that rails can generate for you) then run rake db:migrate to run the migrations on your database.
You can read more about migrations at the rails guide to migrations.
I have set up a RoR environement on AWS' elastic beanstalk. I am able to ssh into my EC2 instance.
My home directory is /home/ec2-user, which is effectively empty.
If I move up a directory, there is also a /home/webapp directory that i do not have access to.
Is there a way to run a rake command or rails console on my elastic beanstalk instance?
If I type rails console I get Usage: rails new APP_PATH [options]
If I type RAILS_ENV=production bundle exec rails console, I get "Could not locate Gemfile"
For rails, jump to /var/app/current then as #juanpastas said, run RAILS_ENV=production bundle exec rails c
Don't know why, but since EBS runs everything as root, this worked for me:
sudo su
bundle exec rails c production
None of these solutions mentioned here worked for me, so I cooked up a little script that I put in script/aws-console.
You can run it from the /var/app/current directory as root:
eb ssh
cd /var/app/current
sudo script/aws-console
My script can be found as a Gist here.
None of the other answers worked for me so I went looking - this is working for me now on an elastic beanstalk 64bit amazon linux 2016.03 V2.1.2 ruby 2.2 (puma) stack
cd /var/app/current
sudo su
rake rails:update:bin
bundle exec rails console
that returns me the expected console
Loading production environment (Rails 4.2.6)
irb(main):001:0>
For Ruby 2.7:
if you don't need environment variables:
BUNDLE_PATH=/var/app/current/vendor/bundle/ bundle exec rails c
It looks like environment variables are not loaded automatically anymore, which might prevent rails console from starting.
I solved it by creating this .ebextensions file:
# Simply call `sudo /var/app/scripts/rails_c`
commands:
create_script_dir:
command: "mkdir -p /var/app/scripts"
ignoreErrors: true
files:
"/var/app/scripts/export_envvars":
mode: "000755"
owner: root
group: root
content: |
#!/opt/elasticbeanstalk/.rbenv/shims/ruby
if __FILE__ == $0
require 'json'
env_file = '/var/app/scripts/envvars'
env_vars = env_vars = JSON.parse(`/opt/elasticbeanstalk/bin/get-config environment`)
str = ''
env_vars.each do |key, value|
new_key = key.gsub(/\s/, '_')
str << "export #{new_key}=\"#{value}\"\n"
end
File.open(env_file, 'w') { |f| f.write(str) }
end
"/var/app/scripts/rails_c":
mode: "000755"
owner: root
group: root
content: |
. ~/.bashrc
/var/app/scripts/export_envvars
. /var/app/scripts/envvars
cd /var/app/current
/opt/elasticbeanstalk/.rbenv/shims/bundle exec rails c
Create a .ebextension file named setvars.config and add those lines to it
commands:
setvars:
command: /opt/elasticbeanstalk/bin/get-config environment | jq -r 'to_entries | .[] | "export \(.key)=\"\(.value)\""' > /etc/profile.d/sh.local
packages:
yum:
jq: []
Then deploy your code again it should work.
reference: https://aws.amazon.com/ar/premiumsupport/knowledge-center/elastic-beanstalk-env-variables-shell/
For Ruby 2.7:
As someone said, if you don't need env vars, run the following
BUNDLE_PATH=/var/app/current/vendor/bundle/ bundle exec rails c
However, if you need ENV, I recommend doing this as per AWS doc:
https://aws.amazon.com/premiumsupport/knowledge-center/elastic-beanstalk-env-variables-linux2/
tl;dr
On Amazon Linux 2, all environment properties are centralised into a single file called /opt/elasticbeanstalk/deployment/env. No user can access these outside the app. So, they recommend to add some hook scripts after deploy to basically create a copy.
#!/bin/bash
#Create a copy of the environment variable file.
cp /opt/elasticbeanstalk/deployment/env /opt/elasticbeanstalk/deployment/custom_env_var
#Set permissions to the custom_env_var file so this file can be accessed by any user on the instance. You can restrict permissions as per your requirements.
chmod 644 /opt/elasticbeanstalk/deployment/custom_env_var
#Remove duplicate files upon deployment.
rm -f /opt/elasticbeanstalk/deployment/*.bak
If because of some reason you don't want to run as root, do the following to pass env vars from root into new user environment:
sudo -u <user> -E env "PATH=$PATH" bash -c 'cd /var/app/current/ && <wtv you want to run>'
I like to create an eb_console file at the root of my rails app, then chmod u+x it. It contains the following:
ssh -t ec2-user#YOUR_EC2_STATION.compute.amazonaws.com 'cd /var/app/current && bin/rails c'
This way, I just have to run:
./eb_console
like I would have run heroku run bundle exec rails c.
#!/bin/sh
shell_join () {
ruby -r shellwords -e 'puts Shellwords.join(ARGV)' "$#"
}
command_str () {
printf 'set -e; . /etc/profile.d/eb_envvars.sh; . /etc/profile.d/use-app-ruby.sh; set -x; exec %s\n' "$(shell_join "$#")"
}
exec sudo su webapp -c "$(command_str "$#")"
Put above file somewhere in your source code, deploy, eb ssh into the eb instance, cd /var/app/current, and then execute path/to/above/script bin/rails whatever argumeents you usually use.
Reason why I have written above script is:
When using sudo, it drops some environment variables which might actually be needed for your rails app; so manually load the profiles which the Elastic Beanstalk platform provides.
Current Beanstalk ruby platform assumes you run rails application on user webapp, a non-login-able user, so it would be wise to run your command in this user.
For the latest ruby version, please use the following command:
BUNDLE_PATH=/opt/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/ bundle exec rails c production
Running it with sudo is not needed.
add an eb extension shortcut:
# .ebextensions/irb.config
files:
"/home/ec2-user/irb":
mode: "000777"
owner: root
group: root
content: |
sudo su - -c 'cd /var/app/current; bundle exec rails c'
then:
$ eb ssh
$ ./irb
irb(main):001:0>
None of these were working for me, including the aws-console script. I finally ended up creating a script directory in /var/app/current and then creating a rails file in that directory as outline by this answer on another SO question.
eb ssh myEnv
cd /var/app/current
sudo mkdir script
sudo vim script/rails
Add this to file and save:
echo #!/usr/bin/env ruby
# This command will automatically be run when you run "rails" with Rails 3 gems installed from the root of your application.
APP_PATH = File.expand_path('../../config/application', __FILE__)
require File.expand_path('../../config/boot', __FILE__)
require 'rails/commands'
Then make it executable and run it:
sudo chmod +x script/rails
sudo script/rails console
And it worked.
You have to find the folder with your Gemfile :p.
To do that, I would take a look in you web server config there should be a config that tells you where your app directory is.
Maybe you know where your app is.
But in case you don't know, I would give a try to:
grep -i your_app_name /etc/apache/*
grep -i your_app_name /etc/apache/sites-enabled/*
To search files containing your_app_name in Apache config.
Or if you are using nginx, replace apache above by nginx.
after you find application folder, cd into it and run RAILS_ENV=production bundle exec rails c.
Making sure that your application is configured to run in production in Apache or nginx configuration.
I do the following on my server:
pg_dump -O -c register_production > register.sql
Then, after copying register.sql to my local environment, I try:
psql register_development < register.sql
This appears to work, but when I try to launch the Rails site locally, I get this:
PG::UndefinedTable: ERROR: relation "list_items" does not exist at character 28
How can I restore everything (including relations) from the server db to my local dev db?
I use this command to save my database:
pg_dump -F c -v -U postgres -h localhost <database_name> -f /tmp/<filename>.psql
And this to restore it:
pg_restore -c -C -F c -v -U postgres /tmp/<filename>.psql
This dumps the database in Postgres' custom format (-F c) which is compressed by default and allows for reordering of its contents. -C -c will drop the database if it exists already and then recreate it, helpful in your case. And -v specifies verbose so you can see exactly what's happening when this goes on.
Does the register_development database exist before you run the psql command? Because that form will not create it for you.
See http://www.postgresql.org/docs/8.1/static/backup.html#BACKUP-DUMP-RESTORE for more information.