c.JupyterHub.ip = '127.0.0.1'

# The ip for the proxy API handlers
c.JupyterHub.proxy_api_ip = '127.0.0.1'

# The public facing port of the proxy
c.JupyterHub.port = 9510

# The base URL of the entire application
c.JupyterHub.base_url = '/jupyterhub'

# The ip for this process
c.JupyterHub.hub_ip = '127.0.0.1'

# put the log file in /var/log
c.JupyterHub.extra_log_file = '/var/log/jupyterhub.log'

#------------------------------------------------------------------------------
# Spawner configuration
#------------------------------------------------------------------------------

# The IP address (or hostname) the single-user server should listen on
c.Spawner.ip = '127.0.0.1'

#------------------------------------------------------------------------------
# Authenticator configuration
#------------------------------------------------------------------------------

# A class for authentication.
#
# The API is one method, `authenticate`, a tornado gen.coroutine.

# set of usernames of admin users
#
# If unspecified, only the user that launches the server will be admin.
c.Authenticator.admin_users = {'root', 'ubuntu'}
c.JupyterHub.ip = '127.0.0.1'

# The ip for the proxy API handlers
c.JupyterHub.proxy_api_ip = '127.0.0.1'

# The public facing port of the proxy
c.JupyterHub.port = 9510

# The base URL of the entire application
c.JupyterHub.base_url = '/jupyterhub'

# The ip for this process
c.JupyterHub.hub_ip = '127.0.0.1'

# put the log file in /var/log
c.JupyterHub.extra_log_file = '/var/log/jupyterhub.log'

c.JupyterHub.log_level = 'WARN'

#------------------------------------------------------------------------------
# Spawner configuration
#------------------------------------------------------------------------------

# The IP address (or hostname) the single-user server should listen on
c.Spawner.ip = '127.0.0.1'

#------------------------------------------------------------------------------
# Authenticator configuration
#------------------------------------------------------------------------------

# A class for authentication.
#
# The API is one method, `authenticate`, a tornado gen.coroutine.

# set of usernames of admin users
#
# If unspecified, only the user that launches the server will be admin.
c.Authenticator.admin_users = {'root', 'ubuntu'}
Set log level to 'WARN'
Set log level to 'WARN'
  c.JupyterHub.ip = '127.0.0.1'
  
  # The ip for the proxy API handlers
  c.JupyterHub.proxy_api_ip = '127.0.0.1'
  
  # The public facing port of the proxy
  c.JupyterHub.port = 9510
  
  # The base URL of the entire application
  c.JupyterHub.base_url = '/jupyterhub'
  
  # The ip for this process
  c.JupyterHub.hub_ip = '127.0.0.1'
  
  # put the log file in /var/log
  c.JupyterHub.extra_log_file = '/var/log/jupyterhub.log'
+ 
+ c.JupyterHub.log_level = 'WARN'
  
  #------------------------------------------------------------------------------
  # Spawner configuration
  #------------------------------------------------------------------------------
  
  # The IP address (or hostname) the single-user server should listen on
  c.Spawner.ip = '127.0.0.1'
  
  #------------------------------------------------------------------------------
  # Authenticator configuration
  #------------------------------------------------------------------------------
  
  # A class for authentication.
  #
  # The API is one method, `authenticate`, a tornado gen.coroutine.
  
  # set of usernames of admin users
  #
  # If unspecified, only the user that launches the server will be admin.
  c.Authenticator.admin_users = {'root', 'ubuntu'}
Set log level to 'WARN'
## Code Before:
c.JupyterHub.ip = '127.0.0.1'

# The ip for the proxy API handlers
c.JupyterHub.proxy_api_ip = '127.0.0.1'

# The public facing port of the proxy
c.JupyterHub.port = 9510

# The base URL of the entire application
c.JupyterHub.base_url = '/jupyterhub'

# The ip for this process
c.JupyterHub.hub_ip = '127.0.0.1'

# put the log file in /var/log
c.JupyterHub.extra_log_file = '/var/log/jupyterhub.log'

#------------------------------------------------------------------------------
# Spawner configuration
#------------------------------------------------------------------------------

# The IP address (or hostname) the single-user server should listen on
c.Spawner.ip = '127.0.0.1'

#------------------------------------------------------------------------------
# Authenticator configuration
#------------------------------------------------------------------------------

# A class for authentication.
#
# The API is one method, `authenticate`, a tornado gen.coroutine.

# set of usernames of admin users
#
# If unspecified, only the user that launches the server will be admin.
c.Authenticator.admin_users = {'root', 'ubuntu'}
## Instruction:
Set log level to 'WARN'
## Code After:
c.JupyterHub.ip = '127.0.0.1'

# The ip for the proxy API handlers
c.JupyterHub.proxy_api_ip = '127.0.0.1'

# The public facing port of the proxy
c.JupyterHub.port = 9510

# The base URL of the entire application
c.JupyterHub.base_url = '/jupyterhub'

# The ip for this process
c.JupyterHub.hub_ip = '127.0.0.1'

# put the log file in /var/log
c.JupyterHub.extra_log_file = '/var/log/jupyterhub.log'

c.JupyterHub.log_level = 'WARN'

#------------------------------------------------------------------------------
# Spawner configuration
#------------------------------------------------------------------------------

# The IP address (or hostname) the single-user server should listen on
c.Spawner.ip = '127.0.0.1'

#------------------------------------------------------------------------------
# Authenticator configuration
#------------------------------------------------------------------------------

# A class for authentication.
#
# The API is one method, `authenticate`, a tornado gen.coroutine.

# set of usernames of admin users
#
# If unspecified, only the user that launches the server will be admin.
c.Authenticator.admin_users = {'root', 'ubuntu'}