diff options
Diffstat (limited to 'qtip/util')
| -rw-r--r-- | qtip/util/env.py | 177 |
1 files changed, 132 insertions, 45 deletions
diff --git a/qtip/util/env.py b/qtip/util/env.py index 0585a4c1..24e08658 100644 --- a/qtip/util/env.py +++ b/qtip/util/env.py @@ -1,15 +1,18 @@ ############################################################################## -# Copyright (c) 2016 Dell Inc, ZTE and others. +# 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 -from os import path import paramiko @@ -51,50 +54,134 @@ def clean_file(*files): return len(results) == len(files) and False not in results -def generate_host_file(hostfile=HOST_FILE): - installer_type = str(os.environ['INSTALLER_TYPE'].lower()) - installer_ip = str(os.environ['INSTALLER_IP']) - - if installer_type not in ["fuel"]: - raise ValueError("%s is not supported" % installer_type) - if not installer_ip: - raise ValueError("The value of environment variable INSTALLER_IP is empty") - - cmd = "bash %s/generate_host_file.sh -i %s -a %s -d %s" % \ - (SCRIPT_DIR, installer_type, installer_ip, hostfile) - os.system(cmd) - return all_files_exist(hostfile) - - -def generate_keypair(keyname='QtipKey'): - """Generating ssh keypair""" - cmd = "ssh-keygen -t rsa -N "" -f {0} -q -b 2048".format(keyname) - os.system(cmd) - return all_files_exist(PRIVATE_KEY, PUBLIC_KEY) - - -def pass_keypair(ip, private_key=PRIVATE_KEY): - 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) +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: + print(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): + print("Generate default keypair {0} under " + "{1}".format(KEYNAME, os.environ['HOME'])) + cmd = '''ssh-keygen -t rsa -N "" -f {0} -q -b 2048'''.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) + print('Pass keypair to remote hosts {0} successfully'.format(ip)) + return True + except Exception as error: + print(error) + return False -def ssh_is_ok(ip, private_key=PRIVATE_KEY, attempts=100): - ssh = paramiko.SSHClient() - ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) - ssh.connect(ip, key_filename=private_key) + 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)) - for attempt in range(attempts): + def generate_default_hostfile(self): try: - stdin, stdout, stderr = ssh.exec_command('uname') - if not stderr.readlines(): - print("{0}: SSH test successful".format(ip)) - return True - except socket.error: - if attempt == (attempts - 1): - return False - print("%s times ssh test......failed" % attempt) - time.sleep(2) - return False + # check whether the file is already existed + self.check_hostfile(HOST_FILE) + except Exception: + print("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 = [] + print('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: + print("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): + print('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(): + print("{0}: SSH test successful.".format(ip)) + return True + except socket.error: + print("%s times ssh test......failed." % str(attempt + 1)) + if attempt == (attempts - 1): + return False + time.sleep(2) + return False |