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##############################################################################
# Copyright (c) 2017 ZTE and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from collections import defaultdict
import os
from os import path
import re
import socket
import sys
import time
import paramiko
from qtip.util.logger import QtipLogger
logger = QtipLogger('env').get
SCRIPT_DIR = path.join(path.dirname(__file__), path.pardir, 'scripts')
KEYNAME = 'QtipKey'
PRIVATE_KEY = '{0}/qtip/{1}'.format(os.environ['HOME'], KEYNAME)
PUBLIC_KEY = PRIVATE_KEY + '.pub'
HOST_FILE = '{0}/qtip/hosts'.format(os.environ['HOME'])
def all_files_exist(*files):
if len(files) == 0:
return False
flag = True
for f_item in files:
flag &= path.isfile(f_item)
logger.info("Is {0} existed: {1}".format(f_item, flag))
return flag
def clean_file(*files):
if len(files) == 0:
logger.info('Nothing to clean')
return False
def clean(f):
try:
if all_files_exist(f):
os.remove(f)
logger.info("Removed: {0}".format(f))
else:
logger.info("Not exists: {0}".format(f))
return True
except OSError as error:
logger.error("Not able to Remove: {0}".format(f), error)
return False
results = map(clean, files)
return len(results) == len(files) and False not in results
class AnsibleEnvSetup(object):
def __init__(self):
self.keypair = defaultdict(str)
self.hostfile = None
self.host_ip_list = []
def setup(self, config={}):
try:
if 'hostfile' in config:
self.check_hostfile(config['hostfile'])
else:
self.generate_default_hostfile()
self.fetch_host_ip_from_hostfile()
if 'keypair' in config:
self.check_keypair(config['keypair'])
else:
self.generate_default_keypair()
self.pass_keypair_to_remote()
self.check_hosts_ssh_connectivity()
except Exception as error:
logger.info(error)
sys.exit(1)
def check_keypair(self, keypair):
self.keypair = defaultdict(str)
if all_files_exist(keypair, '{0}.pub'.format(keypair)):
self.keypair['private'] = keypair
self.keypair['public'] = '{0}.pub'.format(keypair)
else:
raise RuntimeError("The keypairs you in the configuration file"
" is invalid or not existed.")
def generate_default_keypair(self):
if not all_files_exist(PRIVATE_KEY, PUBLIC_KEY):
logger.info("Generate default keypair {0} under "
"{1}".format(KEYNAME, os.environ['HOME']))
cmd = '''ssh-keygen -t rsa -N "" -f {0} -q -b 2048
-C qtip@insecure'''.format(PRIVATE_KEY)
os.system(cmd)
self.keypair['private'] = PRIVATE_KEY
self.keypair['public'] = PUBLIC_KEY
def pass_keypair_to_remote(self):
results = map(lambda ip: self._pass_keypair(ip, self.keypair['private']),
self.host_ip_list)
if not (len(results) == len(self.host_ip_list) and False not in results):
raise RuntimeError("Failed on passing keypair to remote.")
@staticmethod
def _pass_keypair(ip, private_key):
try:
os.system('ssh-keyscan %s >> /root/.ssh/known_hosts' % ip)
time.sleep(2)
ssh_cmd = '%s/qtip_creds.sh %s %s' % (SCRIPT_DIR, ip, private_key)
os.system(ssh_cmd)
logger.info('Pass keypair to remote hosts {0} successfully'.format(ip))
return True
except Exception as error:
logger.error(error)
return False
def check_hostfile(self, hostfile):
if all_files_exist(hostfile):
self.hostfile = hostfile
else:
raise RuntimeError(
"The hostfile {0} is invalid or not existed.".format(hostfile))
def generate_default_hostfile(self):
try:
# check whether the file is already existed
self.check_hostfile(HOST_FILE)
except Exception:
logger.info("Generate default hostfile {0} under "
"{1}".format(HOST_FILE, os.environ['HOME']))
self._generate_hostfile_via_installer()
def _generate_hostfile_via_installer(self):
self.hostfile = None
installer_type = str(os.environ['INSTALLER_TYPE'].lower())
installer_ip = str(os.environ['INSTALLER_IP'])
if installer_type not in ["fuel"]:
raise ValueError("{0} is not supported".format(installer_type))
if not installer_ip:
raise ValueError(
"The value of environment variable INSTALLER_IP is empty.")
cmd = "bash %s/generate_host_file.sh -t %s -i %s -d %s" % \
(SCRIPT_DIR, installer_type, installer_ip, HOST_FILE)
os.system(cmd)
self.hostfile = HOST_FILE
def fetch_host_ip_from_hostfile(self):
self.host_ip_list = []
logger.info('Fetch host ips from hostfile...')
with open(self.hostfile, 'r') as f:
self.host_ip_list = re.findall('\d+.\d+.\d+.\d+', f.read())
if self.host_ip_list:
logger.info("The remote compute nodes: {0}".format(self.host_ip_list))
else:
raise ValueError("The hostfile doesn't include host ip addresses.")
def check_hosts_ssh_connectivity(self):
results = map(lambda ip: self._ssh_is_ok(ip, self.keypair['private']),
self.host_ip_list)
if not (len(results) == len(self.host_ip_list) and False not in results):
raise RuntimeError("Failed on checking hosts ssh connectivity.")
@staticmethod
def _ssh_is_ok(ip, private_key, attempts=100):
logger.info('Check hosts {0} ssh connectivity...'.format(ip))
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip, key_filename=private_key)
for attempt in range(attempts):
try:
stdin, stdout, stderr = ssh.exec_command('uname')
if not stderr.readlines():
logger.info("{0}: SSH test successful.".format(ip))
return True
except socket.error:
logger.debug("%s times ssh test......failed." % str(attempt + 1))
if attempt == (attempts - 1):
return False
time.sleep(2)
return False
def cleanup(self):
CI_DEBUG = os.getenv('CI_DEBUG')
if CI_DEBUG:
logger.info("DEBUG Mode: please do cleanup by manual.")
else:
with open(self.keypair['public'], 'r') as f:
key = f.read().strip('\n').replace('/', '\/')
if key:
for ip in self.host_ip_list:
logger.info("Cleanup authorized_keys from {0}...".format(ip))
cmd = '''bash {0}/cleanup_creds.sh {1} {2} "{3}"'''.format(
SCRIPT_DIR, ip, self.keypair['private'], key)
os.system(cmd)
else:
logger.error("Nothing in public key file.")
logger.info("Cleanup hostfile and keypair.")
clean_file(self.hostfile,
self.keypair['private'],
self.keypair['public'])
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