I have an ec2 server and rds server.
and a Ruby On Rails App
connecting to the rds with these settings worked for me in local ENV:
host: myappnameandhash.us-west-2.rds.amazonaws.com
adapter: mysql2
encoding: utf8
reconnect: false
database: mainDb
pool: 20
username: root
password: xxxx
socket: /var/run/mysqld/mysqld.sock
port: 3306
but on my EC2 server I don't have that mysqld.sock file
so i get this error:
FATAL: failed to connect to MySQL (error=Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2))
what do i need to install in order to have the socket?
thanks
update:
I removed the socket definition and the port.
I deploy using capistrano , now i ssh to my server and go to the "current" folder. there i try to run: rake ts:start
and i get the following:
rake aborted!
Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
but i don't even have the socket definition in my database.yml file anymore
Remove the socket and port number from your database.yml file and then try, it will work.
You must specify the "host" of your RDS, and also configure the security groups in the RDS to allow your instance to connect to it.
I know this has been a while, just encountered this issue with my EC2 server connecting to RDS. Would like to share how I resolve this.
First removing socket and port from the database.yml help
#In your database.yml
development:
#some configuration
staging:
#some configuration
production:
adapter: mysql2
encoding: utf8
reconnect: false
pool: 20
host: url.to.rds.server
database: your-database
username: your-username
password: your-password
To run this rake command on production, you need to specify your rails-env, e.g. if you are using production environment, it should be
bundle exec rake ts:start RAILS_ENV=production
Related
After installing the needed ruby version with: rvm install 2.7.1 and installing all the gems,
I was planning to create the db with rails db:create but I am getting this error:
could not connect to server: Connection refused
Is the server running on host "127.0.0.1" and accepting
TCP/IP connections on port 5442?
Couldn't create 'development' database. Please check the configuration.
rails aborted!
PG::ConnectionBad: could not connect to server: Connection refused
Is the server running on host "127.0.0.1" and accepting
TCP/IP connections on port 5442?
My database.yml
default: &default
adapter: postgresql
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 15 } %>
host: <%= ENV.fetch("DATABASE_HOST") { '127.0.0.1' } %>
development:
<<: *default
database: development
test:
<<: *default
database: test
production:
<<: *default
database: production
Seems that it's related to postgres.
It's version is: postgres (postgreSQL) 12.4
pg gem version is 1.2.3
Restarting the postgresql didn't helped
It appeared that I needed to create a new PostgreSQL database cluster.
First you need to remove the postgres dir in the /usr/local/var/
you can use this code - cd /usr/local/var/ && rm -rf postgres
after that - create the new postgres folder mkdir postgres (inside /usr/local/var)
and initialise the creation of the new PostgreSQL database cluster with -
cd && initdb --locale=C -E UTF-8 /usr/local/var/postgres
The last thing, restart the postgres - brew services restart postgresql
I have created DB instance and gone through the config process of aws rds instance as per the documentation.
created an instance of db successfully.
also changed the connection params in database.yml accordingly.
I ran the following commands in ngnix server installed on ubuntu 16.04 at aws and also rebooted the db instance several times.
RAILS_ENV=production rake db:create
and db created successfully
and then ran
RAILS_ENV=production rake db:migrate
and database migrated successfully.
an then ran the command
sudo service nginx restart
after all of the process
when I am visiting my app its says
PG::ConnectionBad
could not connect to server: Connection refused Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP
connections on port 5432?
here is my database.yml
development:
host: localhost
database: ups_developement_db
adapter: postgresql
encoding: unicode
port: 5432
username: postgres
password: postgres
production:
host: dbcustom.cjocvmnblsa4.us-east-2.rds.amazonaws.com
database: ups_db
adapter: postgresql
encoding: unicode
port: 5432
username: dbmasteruser
password: dbmasterPassword
I am open to provide any kind of information required.
Thanks a lot for your time and solution in advance
It's almost certain that you have not configured the security groups on the RDS instance correctly.
Log into your EC2 and issue the command
telnet <rds hostname> 5432
You should see something like
Trying 10.1.1.2...
Connected to 10.1.1.2.
Escape character is '^]'.
which means that TCP can flow between your EC2 and your RDS.
If not, you need to permit your EC2 to connect to your RDS instance by adding the correct security group configuration.
You should create Environment variables in your AWS RDS instance you should use them in your rails app config file. Check here
database.yml should look like this
production:
adapter: mysql2
encoding: utf8
database: <%= ENV['RDS_DB_NAME'] %>
username: <%= ENV['RDS_USERNAME'] %>
password: <%= ENV['RDS_PASSWORD'] %>
host: <%= ENV['RDS_HOSTNAME'] %>
port: <%= ENV['RDS_PORT'] %>
I am using rails 4.2.6 and ruby 2.3 to create an application .The database I am using is postgresql . When I am running the rails s and going to localhost:3000 then the error PG::Connection bad is showing . how to fix it ?
could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
when you display such an error, postgresql server is already running.
Check PG status;
pg_ctl -D /usr/local/var/postgres status
Response;
pg_ctl: server is running (PID: 377)
/usr/local/Cellar/postgresql/12.1/bin/postgres "-D" "/usr/local/var/postgres"
Kill the process by pid
kill 377
If your postgresql server is running fine, your configuration in rails might be not well set here is an exemple:
file in config/database.yml
default: &default
adapter: postgresql
encoding: unicode
pool: 5
timeout: 5000
development:
<<: *default
host: localhost
username: your_pg_username
password: your_pg_password
port: your_pg_server_port_5432_by_default
database: your_databasename
I've been trying to make the switch to PostgreSQL (from SQLite). I'm developing in the environment of Cloud9. However, on db migration I get the error message:
PG::ConnectionBad: could not connect to server: Connection timed out.
Is the server running on host "mydomain.c9.io" (IP address) and
accepting TCP/IP connections on port 5432?
I've been reading all sorts of previously asked questions on this topic but without success. Does anyone see what might be going wrong?
Do I perhaps need to makes change to the pg_hba.conf file? The current version of the file:
# Database administrative login by Unix domain socket
local all postgres peer
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all peer
# IPv4 local connections:
host all all xxx.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local replication postgres peer
#host replication postgres xxx.0.0.1/32 md5
#host replication postgres ::1/128 md5
database.yml:
default: &default
adapter: postgresql
encoding: unicode
host: 'mydomain.c9.io'
pool: 5
username: my_username
password: my_password
development:
<<: *default
database: app_development
test:
<<: *default
database: app_test
production:
<<: *default
database: app_production
I have gem 'pg' in the Gemfile and have run bundle install. Also, I have created the database app_development (used sudo service postgresql start, sudo sudo -u postgres psql and then create database "app_development";) as well as the database app_test. And lastly, I created a new user in psql with CREATE USER my_username SUPERUSER PASSWORD 'my_password';.
Using sudo nano /etc/postgresql/9.3/main/postgresql.conf I also set listen_addresses = '*' but that made no difference.
What might be causing the error message?
Are you sure that your cloud 9's has postgres port(5432) open for access? I assume the cloud 9 host is not listening on port 5432. You can check out this link for detais
http://www.cyberciti.biz/tips/postgres-allow-remote-access-tcp-connection.html
I have a rails app using postgres. When I made the app, I never created a password. In my database.yml file, no password is listed. My application works, but I am trying to connect to the db using pg_admin so I can see the tables. When I try to connect, I am given the following:
Server doesn't listen
The server doesn't accept connections: the connection library reports
could not connect to server: Connection refused Is the server running on host
"localhost" (::1) and accepting TCP/IP connections on port 3000?
How can i fix this? If it helps, here is the code from my database.yml file for development:
development:
adapter: postgresql
encoding: unicode
database: supersmart_dev
pool: 5
username: postgres
host: localhost