diff options
Diffstat (limited to 'bin/ossh')
| -rwxr-xr-x | bin/ossh | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/bin/ossh b/bin/ossh new file mode 100755 index 000000000..0b48ca46c --- /dev/null +++ b/bin/ossh @@ -0,0 +1,210 @@ +#!/usr/bin/env python +# vim: expandtab:tabstop=4:shiftwidth=4 + +import argparse +import ansibleutil +import traceback +import sys +import os +import re + +class Ossh(object): + def __init__(self): + self.file_path = os.path.join(os.path.dirname(os.path.realpath(__file__))) + self.parse_cli_args() + + self.ansible = ansibleutil.AnsibleUtil() + + # get a dict of host inventory + if self.args.list: + self.get_hosts() + else: + self.get_hosts(True) + + # parse host and user + self.process_host() + + if not self.args.list and not self.env: + print "Please specify an environment." + return + + if self.args.host == '' and not self.args.list: + self.parser.print_help() + return + + + if self.args.debug: + print self.args + + # perform the SSH + if self.args.list: + self.list_hosts() + else: + self.ssh() + + def parse_cli_args(self): + parser = argparse.ArgumentParser(description='Openshift Online SSH Tool.') + parser.add_argument('-e', '--env', action="store", + help="Which environment to search for the host ") + parser.add_argument('-d', '--debug', default=False, + action="store_true", help="debug mode") + parser.add_argument('-v', '--verbose', default=False, + action="store_true", help="Verbose?") + parser.add_argument('--list', default=False, + action="store_true", help="list out hosts") + parser.add_argument('-c', '--command', action='store', + help='Command to run on remote host') + parser.add_argument('-l', '--login_name', action='store', + help='User in which to ssh as') + + parser.add_argument('-o', '--ssh_opts', action='store', + help='options to pass to SSH.\n \ + "-oForwardX11=yes,TCPKeepAlive=yes"') + parser.add_argument('host', nargs='?', default='') + + self.args = parser.parse_args() + self.parser = parser + + + def process_host(self): + '''Determine host name and user name for SSH. + ''' + self.env = None + self.user = None + + re_env = re.compile("\.(" + "|".join(self.host_inventory.keys()) + ")") + search = re_env.search(self.args.host) + if self.args.env: + self.env = self.args.env + elif search: + # take the first? + self.env = search.groups()[0] + + # remove env from hostname command line arg if found + if search: + self.args.host = re_env.split(self.args.host)[0] + + # parse username if passed + if '@' in self.args.host: + self.user, self.host = self.args.host.split('@') + else: + self.host = self.args.host + if self.args.login_name: + self.user = self.args.login_name + + def get_hosts(self, cache_only=False): + '''Query our host inventory and return a dict where the format + equals: + + dict['servername'] = dns_name + ''' + if cache_only: + self.host_inventory = self.ansible.build_host_dict(['--cache-only']) + else: + self.host_inventory = self.ansible.build_host_dict() + + def select_host(self, regex=False): + '''select host attempts to match the host specified + on the command line with a list of hosts. + + if regex is specified then we will attempt to match + all *{host_string}* equivalents. + ''' + re_host = re.compile(self.host) + + results = [] + for hostname, server_info in self.host_inventory[self.env].items(): + if hostname.split(':')[0] == self.host: + # an exact match, return it! + return [(hostname, server_info)] + elif re_host.search(hostname): + results.append((hostname, server_info)) + + if results: + return results + else: + print "Could not find specified host: %s in %s" % (self.host, self.env) + + # default - no results found. + return None + + def list_hosts(self, limit=None): + '''Function to print out the host inventory. + + Takes a single parameter to limit the number of hosts printed. + ''' + + if self.env: + results = self.select_host(True) + if len(results) == 1: + hostname, server_info = results[0] + sorted_keys = server_info.keys() + sorted_keys.sort() + for key in sorted_keys: + print '{0:<35} {1}'.format(key, server_info[key]) + else: + for host_id, server_info in results[:limit]: + name = server_info['ec2_tag_Name'] + ec2_id = server_info['ec2_id'] + ip = server_info['ec2_ip_address'] + print '{ec2_tag_Name:<35} {ec2_tag_environment:<8} {ec2_id:<15} {ec2_ip_address}'.format(**server_info) + + if limit: + print + print 'Showing only the first %d results...' % limit + print + + else: + for env, host_ids in self.host_inventory.items(): + for host_id, server_info in host_ids.items(): + name = server_info['ec2_tag_Name'] + ec2_id = server_info['ec2_id'] + ip = server_info['ec2_ip_address'] + print '{ec2_tag_Name:<35} {ec2_tag_environment:<5} {ec2_id:<15} {ec2_ip_address}'.format(**server_info) + + def ssh(self): + '''SSH to a specified host + ''' + try: + # shell args start with the program name in position 1 + ssh_args = ['/usr/bin/ssh'] + + if self.user: + ssh_args.append('-l%s' % self.user) + + if self.args.verbose: + ssh_args.append('-vvv') + + if self.args.ssh_opts: + for arg in self.args.ssh_opts.split(","): + ssh_args.append("-o%s" % arg) + + result = self.select_host() + if not result: + return # early exit, no results + + if len(result) > 1: + self.list_hosts(10) + return # early exit, too many results + + # Assume we have one and only one. + hostname, server_info = result[0] + dns = server_info['ec2_public_dns_name'] + + ssh_args.append(dns) + + #last argument + if self.args.command: + ssh_args.append("%s" % self.args.command) + + print "Running: %s\n" % ' '.join(ssh_args) + + os.execve('/usr/bin/ssh', ssh_args, os.environ) + except: + print traceback.print_exc() + print sys.exc_info() + + +if __name__ == '__main__': + ossh = Ossh() + |