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mirror of https://github.com/postgrespro/pg_probackup.git synced 2024-12-04 10:44:46 +02:00
pg_probackup/tests/replica.py

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import os
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import unittest
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from .helpers.ptrack_helpers import ProbackupTest, ProbackupException, idx_ptrack
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from datetime import datetime, timedelta
import subprocess
import time
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from distutils.dir_util import copy_tree
from testgres import ProcessType
from time import sleep
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module_name = 'replica'
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class ReplicaTest(ProbackupTest, unittest.TestCase):
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# @unittest.skip("skip")
# @unittest.expectedFailure
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def test_replica_stream_ptrack_backup(self):
"""
make node, take full backup, restore it and make replica from it,
take full stream backup from replica
"""
if not self.ptrack:
return unittest.skip('Skipped because ptrack support is disabled')
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if self.pg_config_version > self.version_to_num('9.6.0'):
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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fname = self.id().split('.')[3]
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backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
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set_replication=True,
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ptrack_enable=True,
initdb_params=['--data-checksums'])
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self.init_pb(backup_dir)
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self.add_instance(backup_dir, 'master', master)
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master.slow_start()
if master.major_version >= 12:
master.safe_psql(
"postgres",
"CREATE EXTENSION ptrack")
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# CREATE TABLE
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master.psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,256) i")
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before = master.safe_psql("postgres", "SELECT * FROM t_heap")
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# take full backup and restore it
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self.backup_node(backup_dir, 'master', master, options=['--stream'])
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
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replica.cleanup()
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self.restore_node(backup_dir, 'master', replica)
self.set_replica(master, replica)
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# Check data correctness on replica
replica.slow_start(replica=True)
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after = replica.safe_psql("postgres", "SELECT * FROM t_heap")
self.assertEqual(before, after)
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# Change data on master, take FULL backup from replica,
# restore taken backup and check that restored data equal
# to original data
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master.psql(
"postgres",
"insert into t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(256,512) i")
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before = master.safe_psql("postgres", "SELECT * FROM t_heap")
self.add_instance(backup_dir, 'replica', replica)
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backup_id = self.backup_node(
backup_dir, 'replica', replica,
options=[
'--stream',
'--master-host=localhost',
'--master-db=postgres',
'--master-port={0}'.format(master.port)])
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self.validate_pb(backup_dir, 'replica')
self.assertEqual(
'OK', self.show_pb(backup_dir, 'replica', backup_id)['status'])
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# RESTORE FULL BACKUP TAKEN FROM PREVIOUS STEP
node = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node'))
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node.cleanup()
self.restore_node(backup_dir, 'replica', data_dir=node.data_dir)
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self.set_auto_conf(node, {'port': node.port})
node.slow_start()
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# CHECK DATA CORRECTNESS
after = node.safe_psql("postgres", "SELECT * FROM t_heap")
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self.assertEqual(before, after)
# Change data on master, take PTRACK backup from replica,
# restore taken backup and check that restored data equal
# to original data
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master.psql(
"postgres",
"insert into t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(512,768) i")
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before = master.safe_psql("postgres", "SELECT * FROM t_heap")
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backup_id = self.backup_node(
backup_dir, 'replica', replica, backup_type='ptrack',
options=[
'--stream',
'--master-host=localhost',
'--master-db=postgres',
'--master-port={0}'.format(master.port)])
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self.validate_pb(backup_dir, 'replica')
self.assertEqual(
'OK', self.show_pb(backup_dir, 'replica', backup_id)['status'])
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# RESTORE PTRACK BACKUP TAKEN FROM replica
node.cleanup()
self.restore_node(
backup_dir, 'replica', data_dir=node.data_dir, backup_id=backup_id)
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self.set_auto_conf(node, {'port': node.port})
node.slow_start()
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# CHECK DATA CORRECTNESS
after = node.safe_psql("postgres", "SELECT * FROM t_heap")
self.assertEqual(before, after)
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# Clean after yourself
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self.del_test_dir(module_name, fname)
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# @unittest.skip("skip")
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def test_replica_archive_page_backup(self):
"""
make archive master, take full and page archive backups from master,
set replica, make archive backup from replica
"""
fname = self.id().split('.')[3]
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backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
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set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'archive_timeout': '10s',
'checkpoint_timeout': '30s',
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'max_wal_size': '32MB'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
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replica.cleanup()
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self.backup_node(backup_dir, 'master', master)
master.psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
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"from generate_series(0,2560) i")
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before = master.safe_psql("postgres", "SELECT * FROM t_heap")
backup_id = self.backup_node(
backup_dir, 'master', master, backup_type='page')
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self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
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self.add_instance(backup_dir, 'replica', replica)
self.set_replica(master, replica, synchronous=True)
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self.set_archiving(backup_dir, 'replica', replica, replica=True)
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replica.slow_start(replica=True)
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# Check data correctness on replica
after = replica.safe_psql("postgres", "SELECT * FROM t_heap")
self.assertEqual(before, after)
# Change data on master, take FULL backup from replica,
# restore taken backup and check that restored data
# equal to original data
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master.psql(
"postgres",
"insert into t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
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"from generate_series(256,25120) i")
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before = master.safe_psql("postgres", "SELECT * FROM t_heap")
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master.psql(
"postgres",
"CHECKPOINT")
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self.wait_until_replica_catch_with_master(master, replica)
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backup_id = self.backup_node(
backup_dir, 'replica', replica,
options=[
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'--archive-timeout=60',
'--master-host=localhost',
'--master-db=postgres',
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'--master-port={0}'.format(master.port)])
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self.validate_pb(backup_dir, 'replica')
self.assertEqual(
'OK', self.show_pb(backup_dir, 'replica', backup_id)['status'])
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# RESTORE FULL BACKUP TAKEN FROM replica
node = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node'))
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node.cleanup()
self.restore_node(backup_dir, 'replica', data_dir=node.data_dir)
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self.set_auto_conf(node, {'port': node.port, 'archive_mode': 'off'})
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node.slow_start()
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# CHECK DATA CORRECTNESS
after = node.safe_psql("postgres", "SELECT * FROM t_heap")
self.assertEqual(before, after)
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node.cleanup()
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# Change data on master, make PAGE backup from replica,
# restore taken backup and check that restored data equal
# to original data
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master.pgbench_init(scale=5)
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pgbench = master.pgbench(
options=['-T', '30', '-c', '2', '--no-vacuum'])
backup_id = self.backup_node(
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backup_dir, 'replica',
replica, backup_type='page',
options=[
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'--archive-timeout=60',
'--master-host=localhost',
'--master-db=postgres',
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'--master-port={0}'.format(master.port)])
pgbench.wait()
self.switch_wal_segment(master)
before = master.safe_psql("postgres", "SELECT * FROM pgbench_accounts")
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self.validate_pb(backup_dir, 'replica')
self.assertEqual(
'OK', self.show_pb(backup_dir, 'replica', backup_id)['status'])
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# RESTORE PAGE BACKUP TAKEN FROM replica
self.restore_node(
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backup_dir, 'replica', data_dir=node.data_dir,
backup_id=backup_id)
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self.set_auto_conf(node, {'port': node.port, 'archive_mode': 'off'})
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node.slow_start()
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# CHECK DATA CORRECTNESS
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after = node.safe_psql("postgres", "SELECT * FROM pgbench_accounts")
self.assertEqual(
before, after, 'Restored data is not equal to original')
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self.add_instance(backup_dir, 'node', node)
self.backup_node(
backup_dir, 'node', node, options=['--stream'])
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# Clean after yourself
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self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
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def test_basic_make_replica_via_restore(self):
"""
make archive master, take full and page archive backups from master,
set replica, make archive backup from replica
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
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'archive_timeout': '10s'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.backup_node(backup_dir, 'master', master)
master.psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
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"from generate_series(0,8192) i")
before = master.safe_psql("postgres", "SELECT * FROM t_heap")
backup_id = self.backup_node(
backup_dir, 'master', master, backup_type='page')
self.restore_node(
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backup_dir, 'master', replica, options=['-R'])
# Settings for Replica
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self.add_instance(backup_dir, 'replica', replica)
self.set_archiving(backup_dir, 'replica', replica, replica=True)
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self.set_replica(master, replica, synchronous=True)
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replica.slow_start(replica=True)
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self.backup_node(
backup_dir, 'replica', replica,
options=['--archive-timeout=30s', '--stream'])
# Clean after yourself
self.del_test_dir(module_name, fname)
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# @unittest.skip("skip")
def test_take_backup_from_delayed_replica(self):
"""
make archive master, take full backups from master,
restore full backup as delayed replica, launch pgbench,
take FULL, PAGE and DELTA backups from replica
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
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set_replication=True,
initdb_params=['--data-checksums'],
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pg_options={'archive_timeout': '10s'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
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replica.cleanup()
self.backup_node(backup_dir, 'master', master)
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master.psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,165000) i")
master.psql(
"postgres",
"CHECKPOINT")
master.psql(
"postgres",
"create table t_heap_1 as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,165000) i")
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self.restore_node(
backup_dir, 'master', replica, options=['-R'])
# Settings for Replica
self.add_instance(backup_dir, 'replica', replica)
self.set_archiving(backup_dir, 'replica', replica, replica=True)
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self.set_auto_conf(replica, {'port': replica.port})
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replica.slow_start(replica=True)
self.wait_until_replica_catch_with_master(master, replica)
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if self.get_version(master) >= self.version_to_num('12.0'):
self.set_auto_conf(
replica, {'recovery_min_apply_delay': '300s'})
else:
replica.append_conf(
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'recovery.conf',
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'recovery_min_apply_delay = 300s')
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replica.stop()
replica.slow_start(replica=True)
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master.pgbench_init(scale=10)
pgbench = master.pgbench(
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options=['-T', '60', '-c', '2', '--no-vacuum'])
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self.backup_node(
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backup_dir, 'replica',
replica, options=['--archive-timeout=60s'])
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self.backup_node(
backup_dir, 'replica', replica,
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data_dir=replica.data_dir,
backup_type='page', options=['--archive-timeout=60s'])
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sleep(1)
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self.backup_node(
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backup_dir, 'replica', replica,
backup_type='delta', options=['--archive-timeout=60s'])
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pgbench.wait()
pgbench = master.pgbench(
options=['-T', '30', '-c', '2', '--no-vacuum'])
self.backup_node(
backup_dir, 'replica', replica,
options=['--stream'])
self.backup_node(
backup_dir, 'replica', replica,
backup_type='page', options=['--stream'])
self.backup_node(
backup_dir, 'replica', replica,
backup_type='delta', options=['--stream'])
pgbench.wait()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_promote(self):
"""
start backup from replica, during backup promote replica
check that backup is failed
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'archive_timeout': '10s',
'checkpoint_timeout': '30s',
'max_wal_size': '32MB'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.backup_node(backup_dir, 'master', master)
master.psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,165000) i")
self.restore_node(
backup_dir, 'master', replica, options=['-R'])
# Settings for Replica
self.add_instance(backup_dir, 'replica', replica)
self.set_archiving(backup_dir, 'replica', replica, replica=True)
self.set_replica(
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master, replica, replica_name='replica', synchronous=True)
replica.slow_start(replica=True)
master.psql(
"postgres",
"create table t_heap_1 as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,165000) i")
self.wait_until_replica_catch_with_master(master, replica)
# start backup from replica
gdb = self.backup_node(
backup_dir, 'replica', replica, gdb=True,
options=['--log-level-file=verbose'])
gdb.set_breakpoint('backup_data_file')
gdb.run_until_break()
gdb.continue_execution_until_break(20)
replica.promote()
gdb.remove_all_breakpoints()
gdb.continue_execution_until_exit()
backup_id = self.show_pb(
backup_dir, 'replica')[0]["id"]
# read log file content
with open(os.path.join(backup_dir, 'log', 'pg_probackup.log')) as f:
log_content = f.read()
f.close
self.assertIn(
'ERROR: the standby was promoted during online backup',
log_content)
self.assertIn(
'WARNING: Backup {0} is running, '
'setting its status to ERROR'.format(backup_id),
log_content)
# Clean after yourself
self.del_test_dir(module_name, fname)
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# @unittest.skip("skip")
def test_replica_stop_lsn_null_offset(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '1h',
'wal_level': 'replica'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', master)
self.set_archiving(backup_dir, 'node', master)
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master.slow_start()
# freeze bgwriter to get rid of RUNNING XACTS records
bgwriter_pid = master.auxiliary_pids[ProcessType.BackgroundWriter][0]
gdb_checkpointer = self.gdb_attach(bgwriter_pid)
self.backup_node(backup_dir, 'node', master)
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# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'node', replica)
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# Settings for Replica
self.set_replica(master, replica, synchronous=True)
self.set_archiving(backup_dir, 'node', replica, replica=True)
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replica.slow_start(replica=True)
self.switch_wal_segment(master)
self.switch_wal_segment(master)
output = self.backup_node(
backup_dir, 'node', replica, replica.data_dir,
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options=[
'--archive-timeout=30',
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'--log-level-console=LOG',
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'--no-validate',
'--stream'],
return_id=False)
self.assertIn(
'LOG: Null offset in stop_backup_lsn value 0/4000000',
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output)
self.assertIn(
'WARNING: WAL segment 000000010000000000000004 could not be streamed in 30 seconds',
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output)
self.assertIn(
'WARNING: Failed to get next WAL record after 0/4000000, looking for previous WAL record',
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output)
self.assertIn(
'LOG: Looking for LSN 0/4000000 in segment: 000000010000000000000003',
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output)
self.assertIn(
'has endpoint 0/4000000 which is '
'equal or greater than requested LSN 0/4000000',
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output)
self.assertIn(
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'LOG: Found prior LSN:',
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output)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_stop_lsn_null_offset_next_record(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '1h',
'wal_level': 'replica'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
# freeze bgwriter to get rid of RUNNING XACTS records
bgwriter_pid = master.auxiliary_pids[ProcessType.BackgroundWriter][0]
gdb_checkpointer = self.gdb_attach(bgwriter_pid)
self.backup_node(backup_dir, 'master', master)
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.add_instance(backup_dir, 'replica', replica)
self.set_replica(master, replica, synchronous=True)
self.set_archiving(backup_dir, 'replica', replica, replica=True)
copy_tree(
os.path.join(backup_dir, 'wal', 'master'),
os.path.join(backup_dir, 'wal', 'replica'))
replica.slow_start(replica=True)
self.switch_wal_segment(master)
self.switch_wal_segment(master)
# open connection to master
conn = master.connect()
gdb = self.backup_node(
backup_dir, 'replica', replica,
options=[
'--archive-timeout=40',
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'--log-level-file=LOG',
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'--no-validate',
'--stream'],
gdb=True)
gdb.set_breakpoint('pg_stop_backup')
gdb.run_until_break()
gdb.remove_all_breakpoints()
gdb.continue_execution_until_running()
sleep(5)
conn.execute("create table t1()")
conn.commit()
while 'RUNNING' in self.show_pb(backup_dir, 'replica')[0]['status']:
sleep(5)
file = os.path.join(backup_dir, 'log', 'pg_probackup.log')
with open(file) as f:
log_content = f.read()
self.assertIn(
'LOG: Null offset in stop_backup_lsn value 0/4000000',
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log_content)
self.assertIn(
'LOG: Looking for segment: 000000010000000000000004',
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log_content)
self.assertIn(
'LOG: First record in WAL segment "000000010000000000000004": 0/4000028',
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log_content)
self.assertIn(
'LOG: current.stop_lsn: 0/4000028',
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log_content)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_archive_replica_null_offset(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '1h',
'wal_level': 'replica'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', master)
self.set_archiving(backup_dir, 'node', master)
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master.slow_start()
self.backup_node(backup_dir, 'node', master)
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# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'node', replica)
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# Settings for Replica
self.set_replica(master, replica, synchronous=True)
self.set_archiving(backup_dir, 'node', replica, replica=True)
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# freeze bgwriter to get rid of RUNNING XACTS records
bgwriter_pid = master.auxiliary_pids[ProcessType.BackgroundWriter][0]
gdb_checkpointer = self.gdb_attach(bgwriter_pid)
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replica.slow_start(replica=True)
self.switch_wal_segment(master)
self.switch_wal_segment(master)
# take backup from replica
output = self.backup_node(
backup_dir, 'node', replica, replica.data_dir,
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options=[
'--archive-timeout=30',
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'--log-level-console=LOG',
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'--no-validate'],
return_id=False)
self.assertIn(
'LOG: Null offset in stop_backup_lsn value 0/4000000',
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output)
self.assertIn(
'WARNING: WAL segment 000000010000000000000004 could not be archived in 30 seconds',
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output)
self.assertIn(
'WARNING: Failed to get next WAL record after 0/4000000, looking for previous WAL record',
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output)
self.assertIn(
'LOG: Looking for LSN 0/4000000 in segment: 000000010000000000000003',
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output)
self.assertIn(
'has endpoint 0/4000000 which is '
'equal or greater than requested LSN 0/4000000',
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output)
self.assertIn(
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'LOG: Found prior LSN:',
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output)
print(output)
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# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_archive_replica_not_null_offset(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '1h',
'wal_level': 'replica'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', master)
self.set_archiving(backup_dir, 'node', master)
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master.slow_start()
self.backup_node(backup_dir, 'node', master)
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# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'node', replica)
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# Settings for Replica
self.set_replica(master, replica, synchronous=True)
self.set_archiving(backup_dir, 'node', replica, replica=True)
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replica.slow_start(replica=True)
# take backup from replica
self.backup_node(
backup_dir, 'node', replica, replica.data_dir,
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options=[
'--archive-timeout=30',
'--log-level-console=LOG',
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'--no-validate'],
return_id=False)
try:
self.backup_node(
backup_dir, 'node', replica, replica.data_dir,
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options=[
'--archive-timeout=30',
'--log-level-console=LOG',
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'--no-validate'])
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because of archive timeout. "
"\n Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd))
except ProbackupException as e:
self.assertIn(
'LOG: Looking for LSN 0/4000060 in segment: 000000010000000000000004',
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e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
self.assertIn(
'INFO: Wait for LSN 0/4000060 in archived WAL segment',
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e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
self.assertIn(
'ERROR: WAL segment 000000010000000000000004 could not be archived in 30 seconds',
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e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_toast(self):
"""
make archive master, take full and page archive backups from master,
set replica, make archive backup from replica
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
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'autovacuum': 'off',
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'checkpoint_timeout': '1h',
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'wal_level': 'replica',
'shared_buffers': '128MB'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
self.set_archiving(backup_dir, 'master', master)
master.slow_start()
# freeze bgwriter to get rid of RUNNING XACTS records
bgwriter_pid = master.auxiliary_pids[ProcessType.BackgroundWriter][0]
gdb_checkpointer = self.gdb_attach(bgwriter_pid)
self.backup_node(backup_dir, 'master', master)
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.add_instance(backup_dir, 'replica', replica)
self.set_replica(master, replica, synchronous=True)
self.set_archiving(backup_dir, 'replica', replica, replica=True)
copy_tree(
os.path.join(backup_dir, 'wal', 'master'),
os.path.join(backup_dir, 'wal', 'replica'))
replica.slow_start(replica=True)
self.switch_wal_segment(master)
self.switch_wal_segment(master)
master.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,10) i')
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self.wait_until_replica_catch_with_master(master, replica)
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output = self.backup_node(
backup_dir, 'replica', replica,
options=[
'--archive-timeout=30',
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'--log-level-console=LOG',
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'--no-validate',
'--stream'],
return_id=False)
pgdata = self.pgdata_content(replica.data_dir)
self.assertIn(
'WARNING: Could not read WAL record at',
output)
self.assertIn(
'LOG: Found prior LSN:',
output)
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res1 = replica.safe_psql(
'postgres',
'select md5(fat_attr) from t1')
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replica.cleanup()
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self.restore_node(backup_dir, 'replica', replica)
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pgdata_restored = self.pgdata_content(replica.data_dir)
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replica.slow_start()
res2 = replica.safe_psql(
'postgres',
'select md5(fat_attr) from t1')
self.assertEqual(res1, res2)
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self.compare_pgdata(pgdata, pgdata_restored)
# Clean after yourself
self.del_test_dir(module_name, fname)
@unittest.skip("skip")
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def test_replica_promote_1(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '1h',
'wal_level': 'replica'})
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if self.get_version(master) < self.version_to_num('9.6.0'):
self.del_test_dir(module_name, fname)
return unittest.skip(
'Skipped because backup from replica is not supported in PG 9.5')
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self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
# set replica True, so archive_mode 'always' is used.
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self.set_archiving(backup_dir, 'master', master, replica=True)
master.slow_start()
self.backup_node(backup_dir, 'master', master)
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.set_replica(master, replica)
replica.slow_start(replica=True)
master.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,10) i')
self.wait_until_replica_catch_with_master(master, replica)
wal_file = os.path.join(
backup_dir, 'wal', 'master', '000000010000000000000004')
wal_file_partial = os.path.join(
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backup_dir, 'wal', 'master', '000000010000000000000004.partial')
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self.assertFalse(os.path.exists(wal_file))
replica.promote()
while not os.path.exists(wal_file_partial):
sleep(1)
self.switch_wal_segment(master)
# sleep to be sure, that any partial timeout is expired
sleep(70)
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self.assertTrue(
os.path.exists(wal_file_partial),
"File {0} disappeared".format(wal_file))
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self.assertTrue(
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os.path.exists(wal_file_partial),
"File {0} disappeared".format(wal_file_partial))
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# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_promote_2(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'])
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
# set replica True, so archive_mode 'always' is used.
self.set_archiving(
backup_dir, 'master', master, replica=True)
master.slow_start()
self.backup_node(backup_dir, 'master', master)
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.set_replica(master, replica)
self.set_auto_conf(replica, {'port': replica.port})
replica.slow_start(replica=True)
master.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,1) i')
self.wait_until_replica_catch_with_master(master, replica)
replica.promote()
replica.safe_psql(
'postgres',
'CHECKPOINT')
# replica.safe_psql(
# 'postgres',
# 'create table t2()')
#
# replica.safe_psql(
# 'postgres',
# 'CHECKPOINT')
self.backup_node(
backup_dir, 'master', replica, data_dir=replica.data_dir,
backup_type='page')
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_promote_3(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'])
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
master.slow_start()
self.backup_node(backup_dir, 'master', master, options=['--stream'])
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.set_replica(master, replica)
self.set_auto_conf(replica, {'port': replica.port})
replica.slow_start(replica=True)
master.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(master, replica)
self.add_instance(backup_dir, 'replica', replica)
replica.safe_psql(
'postgres',
'CHECKPOINT')
full_id = self.backup_node(
backup_dir, 'replica',
replica, options=['--stream'])
master.safe_psql(
'postgres',
'CREATE TABLE t2 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(master, replica)
replica.safe_psql(
'postgres',
'CHECKPOINT')
self.backup_node(
backup_dir, 'replica', replica,
backup_type='delta', options=['--stream'])
replica.promote()
replica.safe_psql(
'postgres',
'CHECKPOINT')
# failing, because without archving, it is impossible to
# take multi-timeline backup.
try:
self.backup_node(
backup_dir, 'replica', replica,
backup_type='delta', options=['--stream'])
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because of timeline switch "
"\n Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd))
except ProbackupException as e:
self.assertTrue(
'WARNING: Cannot find valid backup on previous timelines, '
'WAL archive is not available' in e.message and
'ERROR: Create new full backup before an incremental one' in e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_promote_archive_delta(self):
"""
t3 /---D3-->
t2 /------->
t1 --F---D1--D2--
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node1 = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node1'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '30s',
'archive_timeout': '30s',
'autovacuum': 'off'})
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node1)
self.set_config(
backup_dir, 'node', options=['--archive-timeout=60s'])
self.set_archiving(backup_dir, 'node', node1)
node1.slow_start()
self.backup_node(backup_dir, 'node', node1, options=['--stream'])
# Create replica
node2 = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node2'))
node2.cleanup()
self.restore_node(backup_dir, 'node', node2, node2.data_dir)
# Settings for Replica
self.set_replica(node1, node2)
self.set_auto_conf(node2, {'port': node2.port})
self.set_archiving(backup_dir, 'node', node2, replica=True)
node2.slow_start(replica=True)
node1.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(node1, node2)
node1.safe_psql(
'postgres',
'CREATE TABLE t2 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(node1, node2)
# delta backup on replica on timeline 1
delta1_id = self.backup_node(
backup_dir, 'node', node2, node2.data_dir,
'delta', options=['--stream'])
# delta backup on replica on timeline 1
delta2_id = self.backup_node(
backup_dir, 'node', node2, node2.data_dir, 'delta')
self.change_backup_status(
backup_dir, 'node', delta2_id, 'ERROR')
# node2 is now master
node2.promote()
node2.safe_psql('postgres', 'CHECKPOINT')
node2.safe_psql(
'postgres',
'CREATE TABLE t3 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
# node1 is now replica
node1.cleanup()
# kludge "backup_id=delta1_id"
self.restore_node(
backup_dir, 'node', node1, node1.data_dir,
backup_id=delta1_id,
options=[
'--recovery-target-timeline=2',
'--recovery-target=latest'])
# Settings for Replica
self.set_replica(node2, node1)
self.set_auto_conf(node1, {'port': node1.port})
self.set_archiving(backup_dir, 'node', node1, replica=True)
node1.slow_start(replica=True)
node2.safe_psql(
'postgres',
'CREATE TABLE t4 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,30) i')
self.wait_until_replica_catch_with_master(node2, node1)
# node1 is back to be a master
node1.promote()
node1.safe_psql('postgres', 'CHECKPOINT')
2020-04-22 00:17:06 +02:00
sleep(5)
# delta backup on timeline 3
self.backup_node(
backup_dir, 'node', node1, node1.data_dir, 'delta',
options=['--archive-timeout=60'])
pgdata = self.pgdata_content(node1.data_dir)
node1.cleanup()
self.restore_node(backup_dir, 'node', node1, node1.data_dir)
pgdata_restored = self.pgdata_content(node1.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_replica_promote_archive_page(self):
"""
t3 /---P3-->
t2 /------->
t1 --F---P1--P2--
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node1 = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node1'),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'checkpoint_timeout': '30s',
'archive_timeout': '30s',
'autovacuum': 'off'})
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node1)
self.set_archiving(backup_dir, 'node', node1)
self.set_config(
backup_dir, 'node', options=['--archive-timeout=60s'])
node1.slow_start()
self.backup_node(backup_dir, 'node', node1, options=['--stream'])
# Create replica
node2 = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node2'))
node2.cleanup()
self.restore_node(backup_dir, 'node', node2, node2.data_dir)
# Settings for Replica
self.set_replica(node1, node2)
self.set_auto_conf(node2, {'port': node2.port})
self.set_archiving(backup_dir, 'node', node2, replica=True)
node2.slow_start(replica=True)
node1.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(node1, node2)
node1.safe_psql(
'postgres',
'CREATE TABLE t2 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(node1, node2)
# page backup on replica on timeline 1
page1_id = self.backup_node(
backup_dir, 'node', node2, node2.data_dir,
'page', options=['--stream'])
# page backup on replica on timeline 1
page2_id = self.backup_node(
backup_dir, 'node', node2, node2.data_dir, 'page')
self.change_backup_status(
backup_dir, 'node', page2_id, 'ERROR')
# node2 is now master
node2.promote()
node2.safe_psql('postgres', 'CHECKPOINT')
node2.safe_psql(
'postgres',
'CREATE TABLE t3 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
# node1 is now replica
node1.cleanup()
# kludge "backup_id=page1_id"
self.restore_node(
backup_dir, 'node', node1, node1.data_dir,
backup_id=page1_id,
options=[
'--recovery-target-timeline=2',
'--recovery-target=latest'])
# Settings for Replica
self.set_replica(node2, node1)
self.set_auto_conf(node1, {'port': node1.port})
self.set_archiving(backup_dir, 'node', node1, replica=True)
node1.slow_start(replica=True)
node2.safe_psql(
'postgres',
'CREATE TABLE t4 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,30) i')
self.wait_until_replica_catch_with_master(node2, node1)
# node1 is back to be a master
node1.promote()
node1.safe_psql('postgres', 'CHECKPOINT')
# delta3_id = self.backup_node(
# backup_dir, 'node', node2, node2.data_dir, 'delta')
# page backup on timeline 3
page3_id = self.backup_node(
backup_dir, 'node', node1, node1.data_dir, 'page',
options=['--archive-timeout=60'])
pgdata = self.pgdata_content(node1.data_dir)
node1.cleanup()
self.restore_node(backup_dir, 'node', node1, node1.data_dir)
pgdata_restored = self.pgdata_content(node1.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_parent_choosing(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
master = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'master'),
set_replication=True,
initdb_params=['--data-checksums'])
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'master', master)
master.slow_start()
self.backup_node(backup_dir, 'master', master, options=['--stream'])
# Create replica
replica = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'replica'))
replica.cleanup()
self.restore_node(backup_dir, 'master', replica)
# Settings for Replica
self.set_replica(master, replica)
self.set_auto_conf(replica, {'port': replica.port})
replica.slow_start(replica=True)
master.safe_psql(
'postgres',
'CREATE TABLE t1 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(master, replica)
self.add_instance(backup_dir, 'replica', replica)
full_id = self.backup_node(
backup_dir, 'replica',
replica, options=['--stream'])
master.safe_psql(
'postgres',
'CREATE TABLE t2 AS '
'SELECT i, repeat(md5(i::text),5006056) AS fat_attr '
'FROM generate_series(0,20) i')
self.wait_until_replica_catch_with_master(master, replica)
self.backup_node(
backup_dir, 'replica', replica,
backup_type='delta', options=['--stream'])
replica.promote()
replica.safe_psql('postgres', 'CHECKPOINT')
# failing, because without archving, it is impossible to
# take multi-timeline backup.
try:
self.backup_node(
backup_dir, 'replica', replica,
backup_type='delta', options=['--stream'])
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because of timeline switch "
"\n Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd))
except ProbackupException as e:
self.assertTrue(
'WARNING: Cannot find valid backup on previous timelines, '
'WAL archive is not available' in e.message and
'ERROR: Create new full backup before an incremental one' in e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_instance_from_the_past(self):
"""
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir=os.path.join(module_name, fname, 'node'),
set_replication=True,
initdb_params=['--data-checksums'])
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.slow_start()
full_id = self.backup_node(backup_dir, 'node', node, options=['--stream'])
node.pgbench_init(scale=10)
self.backup_node(backup_dir, 'node', node, options=['--stream'])
node.cleanup()
self.restore_node(backup_dir, 'node', node, backup_id=full_id)
node.slow_start()
try:
self.backup_node(
backup_dir, 'node', node,
backup_type='delta', options=['--stream'])
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because instance is from the past "
"\n Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd))
except ProbackupException as e:
self.assertTrue(
'ERROR: Current START LSN' in e.message and
'is lower than START LSN' in e.message and
'It may indicate that we are trying to backup '
'PostgreSQL instance from the past' in e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
# Clean after yourself
self.del_test_dir(module_name, fname)
2019-09-05 12:54:28 +02:00
2019-09-05 08:30:45 +02:00
# TODO:
# null offset STOP LSN and latest record in previous segment is conrecord (manual only)
# archiving from promoted delayed replica