Error while installing backend

[swapnilnikule]

Performing system checks...

System check identified no issues (0 silenced). Unhandled exception in thread started by <function check_errors..wrapper at 0x7f2f6c022598> Traceback (most recent call last): File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection self.connect() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 171, in connect self.connection = self.get_new_connection(conn_params) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection connection = Database.connect(conn_params) File "/home/dreamblue/.local/lib/python3.6/site-packages/psycopg2/init.py", line 127, in connect conn = _connect(dsn, connection_factory=connection_factory, kwasync) psycopg2.OperationalError: could not translate host name "pgserver" to address: Name or service not known

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "/home/dreamblue/.local/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper fn(*args, kwargs) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 124, in inner_run self.check_migrations() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/core/management/base.py", line 437, in check_migrations executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS]) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/migrations/executor.py", line 20, in init self.loader = MigrationLoader(self.connection) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/migrations/loader.py", line 52, in init self.build_graph() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/migrations/loader.py", line 203, in build_graph self.applied_migrations = recorder.applied_migrations() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations self.ensure_schema() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()): File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 231, in cursor cursor = self.make_debug_cursor(self._cursor()) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 204, in _cursor self.ensure_connection() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection self.connect() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/utils.py", line 94, in exit six.reraise(dj_exc_type, dj_exc_value, traceback) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise raise value.with_traceback(tb) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection self.connect() File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/base/base.py", line 171, in connect self.connection = self.get_new_connection(conn_params) File "/home/dreamblue/.local/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection connection = Database.connect(conn_params) File "/home/dreamblue/.local/lib/python3.6/site-packages/psycopg2/init.py", line 127, in connect conn = _connect(dsn, connection_factory=connection_factory, **kwasync) django.db.utils.OperationalError: could not translate host name "pgserver" to address: Name or service not known

got this error while installing backend tried various version of django but still receiving the same error

[omriabnd]

pgserver is the postgres server we use here in HUJI. Do you have a postgres server installed? if so, I think changing this parameter should work.