On Postgres-XC start getting sudo: unknown user: postgres sudo: unable to initialize policy plugin?

Question

Installed Postgres-XC $>sudo apt-get install postgres-xc then $ postgres -V postgres (PostgreSQL) 9.2.4 after this I tried to start the Postgres server using following methods. method 1 $>sudo postgres --coordinator -D DN2 "root" execution of the PostgreSQL server is not permitted. The server must be started under an unprivileged user ID to prevent possible system security compromise. See the documentation for more information on how to properly start the server. method2 $ sudo -i -u postgres sudo: unknown user: postgres sudo: unable to initialize policy plugin and installed pgadmin3 also from there I want to connect Postgres server . what is the correct way to start the Postgres-XC server? Is the above procedure correct? if yes what is wrong with it? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

To install Postgres's, the best way to is using enterpriseDB. To see some downloader installer section from the below URL. https://www.postgresql.org/download/linux/ubuntu/ To download the Postgres http://www.enterprisedb.com/products-services-training/pgdownload#linux To install the Postgres http://tutorialforlinux.com/2014/02/20/how-to-install-latest-postgresql-9-x-on-linux-mint-16-petra-3264bit-linux-easy-guide/