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#!/usr/bin/env python
# vim: expandtab:tabstop=4:shiftwidth=4
import argparse
import traceback
import sys
import os
import re
import tempfile
import time
import subprocess
import ConfigParser
from openshift_ansible import awsutil
DEFAULT_PSSH_PAR = 200
PSSH = '/usr/bin/pssh'
CONFIG_MAIN_SECTION = 'main'
CONFIG_HOST_TYPE_ALIAS_SECTION = 'host_type_aliases'
CONFIG_INVENTORY_OPTION = 'inventory'
class Opssh(object):
def __init__(self):
self.inventory = None
self.host_type_aliases = {}
self.file_path = os.path.join(os.path.dirname(os.path.realpath(__file__)))
# Default the config path to /etc
self.config_path = os.path.join(os.path.sep, 'etc', \
'openshift_ansible', \
'openshift_ansible.conf')
self.parse_cli_args()
self.parse_config_file()
self.aws = awsutil.AwsUtil(self.inventory, self.host_type_aliases)
if self.args.list_host_types:
self.aws.print_host_types()
return
if self.args.env and \
self.args.host_type and \
self.args.command:
retval = self.run_pssh()
if retval != 0:
raise ValueError("pssh run failed")
return
# If it makes it here, we weren't able to determine what they wanted to do
raise ValueError("Invalid combination of arguments")
def run_pssh(self):
"""Actually run the pssh command based off of the supplied options
"""
# Default set of options
pssh_args = [PSSH, '-i', '-t', '0', '-p', str(self.args.par), '--user', self.args.user]
if self.args.outdir:
pssh_args.append("--outdir='%s'" % self.args.outdir)
if self.args.errdir:
pssh_args.append("--errdir='%s'" % self.args.errdir)
hosts = self.aws.get_host_list(self.args.host_type, self.args.env)
with tempfile.NamedTemporaryFile(prefix='opssh-', delete=True) as f:
for h in hosts:
f.write(h + os.linesep)
f.flush()
pssh_args.extend(["-h", "%s" % f.name])
pssh_args.append("%s" % self.args.command)
print
print "Running: %s" % ' '.join(pssh_args)
print
return subprocess.call(pssh_args)
return None
def parse_config_file(self):
if os.path.isfile(self.config_path):
config = ConfigParser.ConfigParser()
config.read(self.config_path)
if config.has_section(CONFIG_MAIN_SECTION) and \
config.has_option(CONFIG_MAIN_SECTION, CONFIG_INVENTORY_OPTION):
self.inventory = config.get(CONFIG_MAIN_SECTION, CONFIG_INVENTORY_OPTION)
self.host_type_aliases = {}
if config.has_section(CONFIG_HOST_TYPE_ALIAS_SECTION):
for alias in config.options(CONFIG_HOST_TYPE_ALIAS_SECTION):
value = config.get(CONFIG_HOST_TYPE_ALIAS_SECTION, alias).split(',')
self.host_type_aliases[alias] = value
def parse_cli_args(self):
"""Setup the command line parser with the options we want
"""
parser = argparse.ArgumentParser(description='Openshift Online PSSH Tool.')
parser.add_argument('--list-host-types', default=False, action='store_true',
help='List all of the host types')
parser.add_argument('-e', '--env', action="store",
help="Which environment to use")
parser.add_argument('-t', '--host-type', action="store",
help="Which host type to use")
parser.add_argument('-c', '--command', action='store',
help='Command to run on remote host(s)')
parser.add_argument('--user', action='store', default='root',
help='username')
parser.add_argument('-p', '--par', action='store', default=DEFAULT_PSSH_PAR,
help=('max number of parallel threads (default %s)' % DEFAULT_PSSH_PAR))
parser.add_argument('--outdir', action='store',
help='output directory for stdout files')
parser.add_argument('--errdir', action='store',
help='output directory for stderr files')
self.args = parser.parse_args()
if __name__ == '__main__':
if len(sys.argv) == 1:
print "\nError: No options given. Use --help to see the available options\n"
sys.exit(0)
try:
opssh = Opssh()
except ValueError as e:
print "\nError: %s\n" % e.message
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