def print_cluster_status(cls, options):
"""
Gets cluster stats and prints it nicely.
Args:
options: A Namespace that has fields for each parameter that can be
passed in via the command-line interface.
"""
try:
load_balancer_ip = LocalState.get_host_with_role(
options.keyname, 'load_balancer')
acc = AppControllerClient(
load_balancer_ip, LocalState.get_secret_key(options.keyname))
all_private_ips = acc.get_all_private_ips()
cluster_stats = acc.get_cluster_stats()
except (faultType, AppControllerException, BadConfigurationException):
AppScaleLogger.warn("AppScale deployment is probably down")
raise
# Convert cluster stats to useful structures
node_stats = {
ip: next((n for n in cluster_stats if n["private_ip"] == ip), None)
for ip in all_private_ips
}
apps_dict = next((n["apps"] for n in cluster_stats if n["apps"]), {})
services = [ServiceInfo(key.split('_')[0], key.split('_')[1], app_info)
for key, app_info in apps_dict.iteritems()]
nodes = [NodeStats(ip, node) for ip, node in node_stats.iteritems() if node]
invisible_nodes = [ip for ip, node in node_stats.iteritems() if not node]
if options.verbose:
AppScaleLogger.log("-"*76)
cls._print_nodes_info(nodes, invisible_nodes)
cls._print_roles_info(nodes)
else:
AppScaleLogger.log("-"*76)
cls._print_cluster_summary(nodes, invisible_nodes, services)
cls._print_services(services)
cls._print_status_alerts(nodes)
try:
login_host = acc.get_property('login')['login']
except KeyError:
raise AppControllerException('login property not found')
dashboard = next(
(service for service in services
if service.http == RemoteHelper.APP_DASHBOARD_PORT), None)
if dashboard and dashboard.appservers >= 1:
AppScaleLogger.success(
"\nView more about your AppScale deployment at http://{}:{}/status"
.format(login_host, RemoteHelper.APP_DASHBOARD_PORT)
)
else:
AppScaleLogger.log(
"\nAs soon as AppScale Dashboard is started you can visit it at "
"http://{0}:{1}/status and see more about your deployment"
.format(login_host, RemoteHelper.APP_DASHBOARD_PORT)
)
def get_property(cls, options):
"""Queries AppScale for a list of system properties matching the provided
regular expression, as well as the values associated with each matching
property.
Args:
options: A Namespace that has fields for each parameter that can be passed
in via the command-line interface.
Returns:
A dict mapping each property matching the given regex to its associated
value.
"""
shadow_host = LocalState.get_host_with_role(options.keyname, 'shadow')
acc = AppControllerClient(shadow_host, LocalState.get_secret_key(
options.keyname))
return acc.get_property(options.property)
def relocate_app(cls, options):
"""Instructs AppScale to move the named application to a different port.
Args:
options: A Namespace that has fields for each parameter that can be passed
in via the command-line interface.
Raises:
AppScaleException: If the named application isn't running in this AppScale
cloud, if the destination port is in use by a different application, or
if the AppController rejects the request to relocate the application (in
which case it includes the reason why the rejection occurred).
"""
load_balancer_ip = LocalState.get_host_with_role(
options.keyname, 'load_balancer')
acc = AppControllerClient(
load_balancer_ip, LocalState.get_secret_key(options.keyname))
version_key = '_'.join([options.appname, DEFAULT_SERVICE, DEFAULT_VERSION])
app_info_map = acc.get_app_info_map()
if version_key not in app_info_map:
raise AppScaleException("The given application, {0}, is not currently " \
"running in this AppScale cloud, so we can't move it to a different " \
"port.".format(options.appname))
try:
login_host = acc.get_property('login')['login']
except KeyError:
raise AppControllerException('login property not found')
acc.relocate_version(version_key, options.http_port, options.https_port)
AppScaleLogger.success(
'Successfully issued request to move {0} to ports {1} and {2}'.format(
options.appname, options.http_port, options.https_port))
RemoteHelper.sleep_until_port_is_open(login_host, options.http_port)
AppScaleLogger.success(
'Your app serves unencrypted traffic at: http://{0}:{1}'.format(
login_host, options.http_port))
AppScaleLogger.success(
'Your app serves encrypted traffic at: https://{0}:{1}'.format(
login_host, options.https_port))
def run_instances(cls, options):
"""Starts a new AppScale deployment with the parameters given.
Args:
options: A Namespace that has fields for each parameter that can be
passed in via the command-line interface.
Raises:
AppControllerException: If the AppController on the head node crashes.
When this occurs, the message in the exception contains the reason why
the AppController crashed.
BadConfigurationException: If the user passes in options that are not
sufficient to start an AppScale deployment (e.g., running on EC2 but
not specifying the AMI to use), or if the user provides us
contradictory options (e.g., running on EC2 but not specifying EC2
credentials).
"""
LocalState.make_appscale_directory()
LocalState.ensure_appscale_isnt_running(options.keyname, options.force)
node_layout = NodeLayout(options)
if options.infrastructure:
if (not options.test and not options.force and
not (options.disks or node_layout.are_disks_used())):
LocalState.ensure_user_wants_to_run_without_disks()
reduced_version = '.'.join(x for x in APPSCALE_VERSION.split('.')[:2])
AppScaleLogger.log("Starting AppScale " + reduced_version)
my_id = str(uuid.uuid4())
AppScaleLogger.remote_log_tools_state(options, my_id, "started",
APPSCALE_VERSION)
head_node = node_layout.head_node()
# Start VMs in cloud via cloud agent.
if options.infrastructure:
node_layout = RemoteHelper.start_all_nodes(options, node_layout)
# Enables root logins and SSH access on the head node.
RemoteHelper.enable_root_ssh(options, head_node.public_ip)
AppScaleLogger.verbose("Node Layout: {}".format(node_layout.to_list()))
# Ensure all nodes are compatible.
RemoteHelper.ensure_machine_is_compatible(
head_node.public_ip, options.keyname)
# Use rsync to move custom code into the deployment.
if options.rsync_source:
AppScaleLogger.log("Copying over local copy of AppScale from {0}".
format(options.rsync_source))
RemoteHelper.rsync_files(head_node.public_ip, options.keyname,
options.rsync_source)
# Start services on head node.
RemoteHelper.start_head_node(options, my_id, node_layout)
# Write deployment metadata to disk (facilitates SSH operations, etc.)
db_master = node_layout.db_master().private_ip
head_node = node_layout.head_node().public_ip
LocalState.update_local_metadata(options, db_master, head_node)
# Copy the locations.json to the head node
RemoteHelper.copy_local_metadata(node_layout.head_node().public_ip,
options.keyname)
# Wait for services on head node to start.
secret_key = LocalState.get_secret_key(options.keyname)
acc = AppControllerClient(head_node, secret_key)
try:
while not acc.is_initialized():
AppScaleLogger.log('Waiting for head node to initialize...')
# This can take some time in particular the first time around, since
# we will have to initialize the database.
time.sleep(cls.SLEEP_TIME*3)
except socket.error as socket_error:
AppScaleLogger.warn('Unable to initialize AppController: {}'.
format(socket_error.message))
message = RemoteHelper.collect_appcontroller_crashlog(
head_node, options.keyname)
raise AppControllerException(message)
# Set up admin account.
try:
# We don't need to have any exception information here: we do expect
# some anyway while the UserAppServer is coming up.
acc.does_user_exist("non-existent-user", True)
except Exception:
AppScaleLogger.log('UserAppServer not ready yet. Retrying ...')
time.sleep(cls.SLEEP_TIME)
if options.admin_user and options.admin_pass:
AppScaleLogger.log("Using the provided admin username/password")
username, password = options.admin_user, options.admin_pass
elif options.test:
AppScaleLogger.log("Using default admin username/password")
username, password = LocalState.DEFAULT_USER, LocalState.DEFAULT_PASSWORD
else:
username, password = LocalState.get_credentials()
RemoteHelper.create_user_accounts(username, password, head_node,
options.keyname)
acc.set_admin_role(username, 'true', cls.ADMIN_CAPABILITIES)
# Wait for machines to finish loading and AppScale Dashboard to be deployed.
RemoteHelper.wait_for_machines_to_finish_loading(head_node, options.keyname)
try:
login_host = acc.get_property('login')['login']
except KeyError:
raise AppControllerException('login property not found')
RemoteHelper.sleep_until_port_is_open(
login_host, RemoteHelper.APP_DASHBOARD_PORT)
AppScaleLogger.success("AppScale successfully started!")
AppScaleLogger.success(
'View status information about your AppScale deployment at '
'http://{}:{}'.format(login_host, RemoteHelper.APP_DASHBOARD_PORT))
AppScaleLogger.remote_log_tools_state(options, my_id,
"finished", APPSCALE_VERSION)