def restart_cluster(cluster_name, log, function=None):
'''
Restart a cluster.
'''
# initialize the control variable
OK = True
# warn that the log window must not be closed
if not isinstance(log, xlib.DevStdOut):
log.write(
'This process might take several minutes. Do not close this window, please wait!\n'
)
# warn that the requirements are being verified
log.write('{0}\n'.format(xlib.get_separator()))
log.write('Verifying process requirements ...\n')
# verify the master is stopped
if OK:
(master_state_code,
master_state_name) = xec2.get_node_state(cluster_name, 'master')
if master_state_code != 80:
log.write(
'*** ERROR: The cluster {0} is not stopped. Its state is {1} ({2}).\n'
.format(cluster_name, master_state_code, master_state_name))
OK = False
# warn that the requirements are OK
if OK:
log.write('Process requirements are OK.\n')
# restart the cluster
if OK:
log.write('{0}\n'.format(xlib.get_separator()))
log.write('Restarting cluster {0} using StarCluster ...\n'.format(
cluster_name))
log.write('\n')
command = '{0} start --no-create {1}'.format(xlib.get_starcluster(),
cluster_name)
rc = xlib.run_command(command, log)
log.write('\n')
if rc == 0:
log.write('The cluster is restarted.\n')
else:
log.write('*** ERROR: Return code {0} in command -> {1}\n'.format(
rc, command))
OK = False
# warn that the log window can be closed
if not isinstance(log, xlib.DevStdOut):
log.write('{0}\n'.format(xlib.get_separator()))
log.write('You can close this window now.\n')
# execute final function
if function is not None:
function()
# return the control variable
return OK
def remove_node(cluster_name, node_name, log, function=None):
'''
Remove a node in a cluster.
'''
# initialize the control variable
OK = True
# warn that the requirements are being verified
log.write('{0}\n'.format(xlib.get_separator()))
log.write('Verifying process requirements ...\n')
# verify the master is running
if OK:
(master_state_code,
master_state_name) = xec2.get_node_state(cluster_name, 'master')
if master_state_code != 16:
log.write(
'*** ERROR: The cluster {0} is not running. Its state is {1} ({2}).'
.format(cluster_name, master_state_code, master_state_name))
OK = False
# verify the node is running
if OK:
pass
# warn that the requirements are OK
if OK:
log.write('Process requirements are OK.\n')
# remove node
if OK:
log.write('{0}\n'.format(xlib.get_separator()))
log.write(
'Removing node {0} in cluster {1} using StarCluster ...\n'.format(
node_name, cluster_name))
log.write('\n')
command = '{0} removenode --confirm {1} --alias={2}'.format(
xlib.get_starcluster(), cluster_name, node_name)
rc = xlib.run_command(command, log)
log.write('\n')
if rc == 0:
log.write('The node is removed.\n')
else:
log.write('*** ERROR: Return code {0} in command -> {1}\n'.format(
rc, command))
OK = False
# warn that the log window can be closed
if not isinstance(log, xlib.DevStdOut):
log.write('{0}\n'.format(xlib.get_separator()))
log.write('You can close this window now.\n')
# execute final function
if function is not None:
function()
# return the control variable
return OK
def list_clusters(log, function=None):
'''
List clusters.
'''
# initialize the control variable
OK = True
# get current region
region_name = xconfiguration.get_current_region_name()
# warn that the log window must not be closed
if not isinstance(log, xlib.DevStdOut):
log.write(
'This process might take a few minutes. Do not close this window, please wait!\n'
)
# warn that the requirements are being verified
log.write('{0}\n'.format(xlib.get_separator()))
log.write('Verifying process requirements ...\n')
# verify if there are some running clusters
if xec2.get_running_cluster_list(volume_creator_included=True) == []:
log.write('WARNING: There is not any running cluster.\n')
OK = False
# warn that the requirements are OK
if OK:
log.write('Process requirements are OK.\n')
# list clusters
if OK:
log.write('{0}\n'.format(xlib.get_separator()))
log.write('Listing clusters using StarCluster ...\n')
log.write('\n')
command = '{0} --region={1} listclusters'.format(
xlib.get_starcluster(), region_name)
rc = xlib.run_command(command, log)
if rc != 0:
log.write('*** ERROR: Return code {0} in command -> {1}\n'.format(
rc, command))
OK = False
# warn that the log window can be closed
if not isinstance(log, xlib.DevStdOut):
log.write('{0}\n'.format(xlib.get_separator()))
log.write('You can close this window now.\n')
# execute final function
if function is not None:
function()
# return the control variable
return OK
def main(argv):
'''
Main line of the program.
'''
# verify the operating system.
if not sys.platform.startswith('linux') and not sys.platform.startswith(
'darwin') and not sys.platform.startswith(
'win32') and not sys.platform.startswith('cygwin'):
print('*** ERROR: The {1} OS is not supported.'.format(sys.platform))
sys.exit(1)
# verify the Python version.
if sys.version_info[0] == 3 and sys.version_info[1] >= 5:
pass
else:
print('A Python version equal or greater than 3.5 is required.')
sys.exit(1)
# verify if Boto3 is set up
try:
import boto3
except:
print('*** ERROR: The library boto3 is not installed.')
print('Please, review how to set up Boto3 in the manual.')
sys.exit(1)
# verify if Paramiko is set up
try:
import paramiko
except:
print('*** ERROR: The library paramiko is not installed.')
print('Please, review how to set up Paramiko in the manual.')
sys.exit(1)
# verify if Paramiko is set up
try:
import paramiko
except:
print('*** ERROR: The library paramiko is not installed.')
print('Please, review how to set up Paramiko in the manual.')
sys.exit(1)
# get and verify the options
parser = build_parser()
(options, args) = parser.parse_args()
verify_options(options)
# verify if the required graphical libraries are setup
if options.mode == 'gui' or options.mode is None:
# verify if the library PIL.Image is set up
try:
import tkinter
except:
print('*** ERROR: The library tkinter is not installed.')
print('Please, review how to set up Tkinter in the manual.')
sys.exit(1)
# verify if the library PIL.Image is set up
try:
import PIL.Image
except:
print('*** ERROR: The library PIL.Image is not installed.')
print('Please, review how to set up PIL.Image in the manual.')
sys.exit(1)
# verify if the library PIL.ImageTk is set up
try:
import PIL.ImageTk
except:
print('*** ERROR: The library PIL.ImageTk is not installed.')
print('Please, review how to set up PIL.ImageTk in the manual.')
sys.exit(1)
# import required application libraries
import ccloud
import cmenu
import gmain
import xlib
# verify if StarCluster is set up
command = '{0} --version'.format(xlib.get_starcluster())
devstdout = xlib.DevStdOut('starcluster_version', print_stdout=False)
rc = xlib.run_command(command, devstdout)
if rc != 0:
print(
'*** ERROR: The cluster-computing toolkit StarCluster 0.95.6 is not installed or excecution permissions have not set.'
)
print('Please, review how to set up in the manual.')
sys.exit(1)
else:
with open(devstdout.get_log_file(), 'r') as log_command:
version_found = False
for line in log_command:
if line.startswith('0.95.6'):
version_found = True
if not version_found:
print(
'*** ERROR: The cluster-computing toolkit StarCluster 0.95.6 is not installed or excecution permissions have not set.'
)
print('Please, review how to set up in the manual.')
sys.exit(1)
# start the user interface depending on the mode
if options.mode == 'gui' or options.mode is None:
main = gmain.Main()
main.mainloop()
else:
ccloud.form_set_environment()
cmenu.build_menu_main()
def terminate_cluster(cluster_name,
force,
log,
function=None,
is_menu_call=True):
'''
Terminate a cluster.
'''
# initialize the control variable
OK = True
# get current region
region_name = xconfiguration.get_current_region_name()
# warn that the log window does not have to be closed
if not isinstance(log, xlib.DevStdOut) and is_menu_call:
log.write(
'This process might take a few minutes. Do not close this window, please wait!\n'
)
# warn that the requirements are being verified
log.write(f'{xlib.get_separator()}\n')
log.write('Checking process requirements ...\n')
# check the cluster is running
if OK:
(master_state_code,
master_state_name) = xec2.get_node_state(cluster_name,
node_name='master')
if not force and master_state_code != 16:
log.write(
f'*** ERROR: The cluster {cluster_name} is not running. Its state is {master_state_code} ({master_state_name}).\n'
)
OK = False
# warn that the requirements are OK
if OK:
log.write('Process requirements are OK.\n')
# terminate cluster
if OK:
log.write(f'{xlib.get_separator()}\n')
if cluster_name == xlib.get_volume_creator_name():
log.write('Terminating the volume creator using StarCluster ...\n')
else:
log.write(
'Terminating the cluster {0} using StarCluster ...\n'.format(
cluster_name))
log.write('\n')
if not force:
command = '{0} --region={1} terminate --confirm {2}'.format(
xlib.get_starcluster(), region_name, cluster_name)
else:
command = '{0} --region={1} terminate --force --confirm {2}'.format(
xlib.get_starcluster(), region_name, cluster_name)
rc = xlib.run_command(command, log)
log.write('\n')
if rc == 0:
if cluster_name == xlib.get_volume_creator_name():
log.write('The volume creator is terminated.\n')
else:
log.write('The cluster is terminated.\n')
else:
log.write('*** ERROR: Return code {0} in command -> {1}\n'.format(
rc, command))
OK = False
# warn that the log window can be closed
if not isinstance(log, xlib.DevStdOut) and is_menu_call:
log.write(f'{xlib.get_separator()}\n')
log.write('You can close this window now.\n')
# execute final function
if function is not None:
function()
# return the control variable
return OK
def create_cluster(template_name,
cluster_name,
log,
function=None,
is_menu_call=True):
'''
Create a cluster from a template name.
'''
# initialize the control variable
OK = True
# initialize the state variables
master_state_code = ''
master_state_name = ''
# get current region and zone names
region_name = xconfiguration.get_current_region_name()
zone_name = xconfiguration.get_current_zone_name()
# warn that the log window does not have to be closed
if not isinstance(log, xlib.DevStdOut) and is_menu_call:
log.write(
'This process might take several minutes. Do not close this window, please wait!\n'
)
# warn that the requirements are being verified
log.write(f'{xlib.get_separator()}\n')
log.write('Checking process requirements ...\n')
# check that the cluster is defined in the NGScloud config file
if OK:
if not xconfiguration.is_template_defined(template_name):
log.write(
'*** ERROR: The cluster {0} is not defined in the {1} config file.\n'
.format(cluster_name, xlib.get_project_name()))
OK = False
# check that the cluster mode is None
if OK:
if xec2.get_cluster_mode(cluster_name) is not None:
log.write('*** ERROR: There is a cluster or a instance running.\n')
OK = False
# check that the zone is available
if OK:
if not xec2.is_zone_available(region_name, zone_name):
log.write(
'*** ERROR: The zone name {0} is not available.\n'.format(
zone_name))
OK = False
# warn that the requirements are OK
if OK:
log.write('Process requirements are OK.\n')
# create the cluster
if OK:
log.write(f'{xlib.get_separator()}\n')
if cluster_name == xlib.get_volume_creator_name():
log.write('Creating the volume creator using StarCluster ...\n')
else:
log.write(
'Creating the cluster {0} using StarCluster ...\n'.format(
cluster_name))
log.write('\n')
if template_name == xlib.get_volume_creator_name():
command = '{0} --region={1} start --availability-zone={2} --cluster-template={3} --disable-queue {4}'.format(
xlib.get_starcluster(), region_name, zone_name, template_name,
cluster_name)
else:
command = '{0} --region={1} start --availability-zone={2} --cluster-template={3} {4}'.format(
xlib.get_starcluster(), region_name, zone_name, template_name,
cluster_name)
rc = xlib.run_command(command, log)
log.write('\n')
if rc == 0:
(master_state_code,
master_state_name) = xec2.get_node_state(cluster_name,
node_name='master')
if cluster_name == xlib.get_volume_creator_name():
log.write('The volume creator is created.\n')
else:
log.write('The cluster is created.\n')
else:
log.write('*** ERROR: Return code {0} in command -> {1}\n'.format(
rc, command))
log.write('***')
log.write(
'*** You have to terminate {0} (option "Force termination of a cluster")\n'
.format(cluster_name))
log.write('*** and create it again.\n')
OK = False
# install infrastructure software in every node of the cluster
if OK:
if cluster_name != xlib.get_volume_creator_name():
cluster_node_list = xec2.get_cluster_node_list(cluster_name)
for node_name in cluster_node_list:
OK = xnode.install_node_infrastructure_software(
cluster_name, node_name, log)
# warn that the log window can be closed
if not isinstance(log, xlib.DevStdOut) and is_menu_call:
log.write(f'{xlib.get_separator()}\n')
log.write('You can close this window now.\n')
# execute final function
if function is not None:
function()
# return the control variable and the state
return (OK, master_state_code, master_state_name)