Installing the Certbot Let’s Encrypt Client The certbot package is not available through the package manager by default. You will need to enable the EPEL repository to install Certbot. sudo yum install epel-release sudo yum install certbot-nginx Set Up NGINX certbot can automatically configure NGINX for SSL/TLS. It looks for and modifies the server block in your NGINX configuration that contains a server_name directive with the domain name you’re requesting a certificate for. In our example, the domain is www.mydomain.com . Assuming you’re starting with a fresh NGINX install, use a text editor to create a file in the /etc/nginx/conf.d directory named domain_name.conf (so in our example, www.mydomain.com.conf). Specify your domain name (and variants, if any) with the server_name directive: server { listen 80 default_server; listen [::]:80 default_server; root /var/www/html; server_name myd...
Create The Postgres Password File The file .pgpass in a user’s home directory can contain passwords to be used if the connection requires a password (and no password has been specified otherwise). On Microsoft Windows the file is named %APPDATA%\postgresql\pgpass.conf (where %APPDATA% refers to the Application Data subdirectory in the user’s profile). Alternatively, the password file to use can be specified using the connection parameter passfile or the environment variable PGPASSFILE . Let’s see if the postgres user already has a password: sudo -u postgres psql select * from pg_authid; If rolpassword is empty, set the password: ALTER USER postgres PASSWORD 'mypassword'; \q Create .pgpass vim ~/.pgpass # Add the following line # hostname:port:database:username:password localhost:*:*:postgres:[password] Add Environment variable PGPASSFILE export PGPASSFILE= '/root/.pgpass' vim /etc/environment ...
ERROR psql: error: connection to server at "localhost" (127.0.0.1), port 5433 failed: ERROR: failed to authenticate with backend using SCRAM DETAIL: valid password not found Since Pgpool-II is a PostgreSQL proxy that works between clients and PostgreSQL servers, the authentication comprises two steps: Authentication between client and Pgpool-II Authentication between Pgpool-II and PostgreSQL servers Starting with Pgpool-II 4.0, Pgpool-II supports scram-sha-256 authentication. scram-sha-256 authentication method is strongly recommended because it is the most secure password-based authentication method. Solution 1 If PostgreSQL servers require MD5 or SCRAM authentication for some user’s authentication but the password for that user is not present in pool_passwd , then enabling allow_clear_text_frontend_auth will allow the Pgpool-II to use clear-text-password authentication with user to get the password in plain text form from the user ...
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