Not able to enable postgresql archive log ?

unable to restart the postgres server after enabling archivelog , we are getting  below error while restarting the postgresql database .

Below steps are we followed to enable archiver.

archive_mode =on                # enables archiving; off, on, or always
                                # (change requires restart)
archive_command = 'gzip < %p /archivelog/archive_9.6/%f'

while restarting the DB we are getting below error :

 FATAL:  WAL archival cannot be enabled when wal_level is "minimal"

Solution:

Step 1.Go to postgresql.conf file and change the below parameter the restart the server

wal_level =replica

Step 2.connect the postgres server then check the below parameter to confirm archive log enabled.

$ psql

postgres=# show archive_mode;
 archive_mode
--------------
 on
(1 row)

postgres=# show archive_COMMAND;
                    archive_command
--------------------------------------------------------
     gzip < %p /archivelog/archive_9.6/%f