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validate_prepare_env.py
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validate_prepare_env.py
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"""
tableau-dr
Copyright (C) 2016 brilliant-data.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import logging
import threading
import Queue
import sys
def prepare_remote_server(remote_server, pg_pass, dr_ip, start_afterwards=False):
logging.info("Preparing Tableau Server on %s..." % remote_server.host)
logging.info("Stopping Tableau Server on %s..." % remote_server.host)
remote_server.stop()
logging.info("Preparing the database of Tableau Server on %s..." % remote_server.host)
remote_server.prepare_postgres_config()
remote_server.change_db_pass("tableau", pg_pass)
remote_server.alter_user_role_replication(pg_user="tableau")
remote_server.enable_user_replication_connection(pg_user="tableau", ip=dr_ip)
if start_afterwards:
logging.info("Starting Tableau Server on %s..." % remote_server.host)
remote_server.start()
def prepare_dr_unix(env_manager, source_server, target_server):
logging.info("Preparing Tableau DR Unix's machine...")
logging.info("Preparing Tableau File Store Repository...")
if env_manager.tdfs_enabled is True:
env_manager.create_mount_dirs(source_server, target_server)
env_manager.create_directory_tree()
env_manager.install_build_postgres(source_server=source_server)
env_manager.build_filestore()
env_manager.run_filestore(is_switchover=False)
else:
env_manager.create_mount_dirs(source_server, target_server)
env_manager.create_directory_tree()
env_manager.add_initial_rsync_jobs()
logging.info("Setting up the source Tableau Server's Postgres replica on Rescue Linux...")
env_manager.install_build_postgres(source_server=source_server)
def validate_tableau_dr(env_manager, source_server, target_server):
logging.info("Validating environment is in progress...")
env_manager.validate_os()
env_manager.validate_user()
env_manager.validate_rescue_dir()
env_manager.validate_paths()
env_manager.validate_mountdir()
if env_manager.tdfs_enabled:
env_manager.check_filestore()
else:
env_manager.check_rsync()
env_manager.check_postgres(source_server=source_server,
target_server=target_server)
source_server.validate_exec_policy()
source_server.validate_tableau_paths()
source_server.validate_winrm_config()
if target_server is not None:
target_server.validate_exec_policy()
target_server.validate_tableau_paths()
target_server.validate_winrm_config()
logging.info("Environment has been successfully validated!")
def prepare_tableau_dr(env_manager, source_server, target_server, dr_ip):
logging.info("Preparing environment is in progress...")
# Validate that failover user is running me
env_manager.validate_os()
env_manager.validate_user()
env_manager.validate_rescue_dir()
# Net share and folder permissions
logging.info("Ensuring appropriate access control settings on the Windows machine...")
servers = [source_server, target_server]
servers = filter(lambda x: x is not None, servers)
for server in servers:
server.validate_exec_policy()
server.validate_tableau_paths()
server.validate_winrm_config()
server.net_share_tab_data()
server.ensure_app_data_permissions()
prepare_dr_unix(env_manager,
source_server,
target_server)
# Preparing source Tableau Server
prepare_remote_server(source_server,
env_manager.pg_password,
dr_ip,
True)
if target_server is not None:
prepare_remote_server(target_server,
env_manager.pg_password,
dr_ip)
logging.info("Creating a basebackup for the source Tableau Server and starting it afterwards...")
env_manager.basebackup_start_source_postgres(source_server=source_server)
logging.info("Environment has been successfully prepared!")
def uninstall_tableau_dr(env_manager, source_server, target_server):
logging.info("Uninstalling Tableau DR is in progress...")
# Validate that failover user is running me
env_manager.validate_os()
env_manager.validate_user()
env_manager.validate_rescue_dir()
logging.info("Stopping Postgres...")
env_manager.stop_source_postgres()
if target_server is not None:
env_manager.stop_target_postgres()
logging.info("Removing relevant replication jobs...")
env_manager.remove_relevant_cron_jobs()
logging.info("Removing mountpoints...")
env_manager.remove_mount_dirs()
logging.info("Removing shares...")
source_server.delete_net_share()
if target_server is not None:
target_server.delete_net_share()
logging.info("Deleting Tableau DR's directory tree...")
env_manager.delete_directory_tree()
logging.info("Deleting temporaly postgres files...")
env_manager.delete_temp_pg_dir()
logging.info("Tableau DR has been successfully uninstalled!")