【Vagrant】创建PG15

设置root密码，并创建db以及密码和用户

  Vagrant.configure("2") do |config|
    config.vm.box = "oraclelinux/8"
    config.vm.network "private_network", ip: "192.168.56.101"
    config.vm.hostname = "pg15vm"   
  
    config.vm.provider "virtualbox" do |vb|
      vb.name = "pg15vm"
      vb.memory = "2048"  # Set memory to 2GB
      vb.cpus = 1         # Set CPU count to 1
    end
  
    config.vm.provision "shell", inline: <<-SHELL
      # Update the system
      sudo dnf update -y
  
      # Reset root password
      echo "root:new_password" | sudo chpasswd
  
      # Install PostgreSQL 15 repository
      sudo dnf install -y https://download.postgresql.org/pub/repos/yum/15/redhat/rhel-8-x86_64/pgdg-oraclelinux15-15-3.noarch.rpm
  
      # Install PostgreSQL 15
      sudo dnf install -y postgresql15-server
  
      # Initialize and start PostgreSQL service
      sudo /usr/pgsql-15/bin/postgresql-15-setup initdb
      sudo systemctl enable --now postgresql-15
  
      # Configure PostgreSQL authentication
      echo "host all all 0.0.0.0/0 md5" | sudo tee -a /var/lib/pgsql/15/data/pg_hba.conf
      sudo systemctl restart postgresql-15
  
      # Create test_user and test_db
      sudo -u postgres psql -c "CREATE USER test_user WITH PASSWORD 'test_user';"
      sudo -u postgres psql -c "CREATE DATABASE test_db OWNER test_user;"
  
      # Create schema test_c under test_user
      sudo -u postgres psql -c "CREATE SCHEMA test_c AUTHORIZATION test_user;"
    SHELL
  end