PostgreSQL or simply postgres is the most advanced, SQL-compliant and open-source objective-RDBMS. Compared to other RDBMSs, PostgreSQL differs itself with its support for reliable transactions, i.e. Atomicity, Consistency, Isolation, Durability (ACID).In This Article, you will learn how to Install, Connect and Manage a postgres database.
sudo apt-get install postgresql-9.5 libpq-dev
This will install Database server, its dependancy packages and Library Files. This will also create a default user for postgresql called postgres.
Connecting to Database & initial setup:
# connecting to database sudo su su postgres -c "psql" # change postgres user password ALTER USER postgres PASSWORD 'our-new-password'; \q # modify pg_hba.conf to connect to database with password only. local all postgres peer local all all peer change peer to md5 and restart postgresql for changes to take affect. # connecting to database psql -U postgres
enter password when prompted and you will be connected to databse.
# create new database CREATE DATABASE gondor; # create new user CREATE USER elessar WITH PASSWORD '<some-password>' # grant the user permission to Database GRANT ALL PRIVILEGES ON DATABASE gondor TO elessar; # switch to database connect <database-name>
wget -qO- https://get.docker.com/ | s
Deploy postgres container:
docker run --name some-postgres -e POSTGRES_PASSWORD=<password-postgres-user> -d postgres
Replace <password-postgres-user> and run the command. This will launch postgresql database.
Connecting to this Docker Instance:
apt-get install postgresql-client-common postgresql-client-9.5
This will install client tools, then you can connect using
psql -U postgres -h <docker-ip>
This will prompt for password and then you can connect and use postgres as you normally would.
Micropyramid is a software development and cloud consulting partner for enterprise businesses across the world. We work on python, Django, Salesforce, Angular, Reactjs, React Native, MySQL, PostgreSQL, Docker, Linux, Ansible, git, amazon web services. We are Amazon and salesforce consulting partner with 5 years of cloud architect experience. We develop e-commerce, retail, banking, machine learning, CMS, CRM web and mobile applications.
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