unable to start ambari-server because postgresql failed to start

[#1]

Ambari Server running with administrator privileges. Running initdb: This may take upto a minute. About to start PostgreSQL ERROR: Exiting with exit code 3. REASON: Unable to start PostgreSQL server. Status stopped. . Exiting

[#2]

did you setup Ambari with embedded postgres or standalone? If embedded, are you sure you have all of your prerequisites satisfied? Try starting the database server manually.

[#3]

yes all cluster was fine , today i try to start ambari-server then i have this error , i tried to

service postgresql start Starting postgresql service: [FAILED]

[#4]

@Artem Ervits

thate the error:

Internal Exception: org.postgresql.util.PSQLException: Connection 
refused. Check that the hostname and port are correct and that the 
postmaster is accepting TCP/IP connections.
 

[#5]

@ Mourad Chahri,

Did you changed anything in cluster?

Did you see anything in logs?

[#6]

yes :

Internal Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

[#7 · Accepted solution]

i found the solution i uninstall ambari-server without reset it and install it and it's work .

[#8]

Hi @Mourad Chahri, having same issue. i downloaded hortonworks sandbox and trying to configure it. how to specifically reinstall ambari-server? any specific commands?