一，postgresql 数据的备份与恢复
（一）数据库备份与恢复
1，备份
windows环境
1> dump 逻辑备份
1，用管理员身份打开power shell
2，切换到本机 postgresql 安装目录下的 bin 目录：
bash
PS C:\Users\DFL> cd D:\DFL\SOFTWARES\postgresql14\bin
PS D:\DFL\SOFTWARES\postgresql14\bin>3，执行 dump ，将 test 数据库备份到桌面文件 appdb.bak ：
bash
PS D:\DFL\SOFTWARES\postgresql14\bin> .\pg_dump -h localhost -p 5432 -U postgres -d test > C:\Users\DFL\Desktop\appdb.bak
口令:2> COPY 逻辑备份
Linux（ubuntu）环境
（二）数据表备份与恢复
二，pgadmin4
（一）备份
1，备份 table
2，备份详情：
请求参数：
sql
gid1
sid=1
data={'file': '/student.bak.backup', 'format': 'plain', 'id': None, 'blobs': True, 'verbose': True, 'encoding': 'UTF8', 'role': 'postgres', 'only_data': True, 'use_insert_commands': True, 'include_create_database': True, 'disable_trigger': True, 'disable_quoting': True, 'database': 'postgres', 'tables': [['public', 'student']]}pgadmin4数据备份源码:
python
web/pgadmin/tools/backup/__init__.py：
@blueprint.route(
'/job/<int:sid>', methods=['POST'], endpoint='create_server_job'
)
@blueprint.route(
'/job/<int:sid>/object', methods=['POST'], endpoint='create_object_job'
)
@login_required
def create_backup_objects_job(sid):
"""
Args:
sid: Server ID
Creates a new job for backup task
(Backup Database(s)/Schema(s)/Table(s))
Returns:
None
"""
# 获取请求
data = json.loads(request.data, encoding='utf-8')
backup_obj_type = data.get('type', 'objects')
try:
# 获取文件路径
backup_file = filename_with_file_manager_path(
data['file'], (data.get('format', '') != 'directory'))
except Exception as e:
return bad_request(errormsg=str(e))
# 获取服务器信息
server = get_server(sid)
if server is None:
return make_json_response(
success=0,
errormsg=_("Could not find the specified server.")
)
# To fetch MetaData for the server
from pgadmin.utils.driver import get_driver
driver = get_driver(PG_DEFAULT_DRIVER)
manager = driver.connection_manager(server.id)
conn = manager.connection()
connected = conn.connected()
if not connected:
return make_json_response(
success=0,
errormsg=_("Please connect to the server first.")
)
# 获取备份工具，这里是 pg_dump
utility = manager.utility('backup') if backup_obj_type == 'objects' \
else manager.utility('backup_server')
ret_val = does_utility_exist(utility)
if ret_val:
return make_json_response(
success=0,
errormsg=ret_val
)
# 准备填充 dump 命令的参数
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/student.bak.backup', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--data-only', '--disable-triggers', '--create', '--inserts', '--disable-dollar-quoting', '--encoding', 'UTF8', '--table', 'public.student']
args = _get_args_params_values(
data, conn, backup_obj_type, backup_file, server, manager)
# 这里将参数中的所有双引号转义，因为双引号在shell命令行中具有特殊含义，它们在没有双引号的情况下运行。添加额外的引号以保存我们的双引号。
escaped_args = [
escape_dquotes_process_arg(arg) for arg in args
]
try:
# 用 utf-8 编码文件名
bfile = data['file'].encode('utf-8') \
if hasattr(data['file'], 'encode') else data['file']
# 区分不同的备份类型
if backup_obj_type == 'objects': # 备份数据对象（数据库、模式、表）数据
args.append(data['database'])
escaped_args.append(data['database'])
p = BatchProcess(
desc=BackupMessage(
BACKUP.OBJECT, server.id, bfile,
*args,
database=data['database']
),
cmd=utility, args=escaped_args
)
else: # 备份服务器数据
p = BatchProcess(
desc=BackupMessage(
BACKUP.SERVER if backup_obj_type != 'globals'
else BACKUP.GLOBALS,
server.id, bfile,
*args
),
cmd=utility, args=escaped_args
)
manager.export_password_env(p.id)
# Check for connection timeout and if it is greater than 0 then
# set the environment variable PGCONNECT_TIMEOUT.
if manager.connect_timeout > 0:
env = dict()
env['PGCONNECT_TIMEOUT'] = str(manager.connect_timeout)
p.set_env_variables(server, env=env)
else:
p.set_env_variables(server)
# 创建子进程，执行 pg_dump 命令
p.start()
jid = p.id
except Exception as e:
current_app.logger.exception(e)
return make_json_response(
status=410,
success=0,
errormsg=str(e)
)
# Return response
return make_json_response(
data={'job_id': jid, 'desc': p.desc.message, 'Success': 1}
)右下角显示进程任务执行信息：
查看进程任务：
查看备份任务执行情况：
查看任务务行详情：
- 红框中就是备份数据表时执行的 dump 命令。
下载备份文件：
3，备份文件：
sql
--
-- PostgreSQL database dump
--
-- Dumped from database version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Dumped by pg_dump version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Started on 2023-08-23 18:01:11 CST
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
--
-- TOC entry 3640 (class 1262 OID 13799)
-- Name: postgres; Type: DATABASE; Schema: -; Owner: postgres
--
CREATE DATABASE postgres WITH TEMPLATE = template0 ENCODING = 'UTF8' LOCALE = 'zh_CN.UTF-8';
ALTER DATABASE postgres OWNER TO postgres;
\connect postgres
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
--
-- TOC entry 3634 (class 0 OID 24580)
-- Dependencies: 213
-- Data for Name: student; Type: TABLE DATA; Schema: public; Owner: postgres
--
SET SESSION AUTHORIZATION DEFAULT;
ALTER TABLE public.student DISABLE TRIGGER ALL;
INSERT INTO public.student VALUES (1, 1, 'tname1');
INSERT INTO public.student VALUES (2, 1, 'tname1');
INSERT INTO public.student VALUES (3, 2, 'tname2');
INSERT INTO public.student VALUES (4, 3, 'tname3');
INSERT INTO public.student VALUES (5, 3, 'tname3');
ALTER TABLE public.student ENABLE TRIGGER ALL;
-- Completed on 2023-08-23 18:01:11 CST
--
-- PostgreSQL database dump complete
--5，备份 schema
1，对话框
2，备份信息：
python
@blueprint.route(
'/job/<int:sid>', methods=['POST'], endpoint='create_server_job'
)
@blueprint.route(
'/job/<int:sid>/object', methods=['POST'], endpoint='create_object_job'
)
@login_required
def create_backup_objects_job(sid):
"""
Args:
sid: Server ID
Creates a new job for backup task
(Backup Database(s)/Schema(s)/Table(s))
Returns:
None
"""
# 获取请求
# {'file': 'psche', 'format': 'plain', 'id': None, 'blobs': True, 'verbose': True, 'encoding': 'UTF8', 'role': 'postgres', 'data': True, 'dns_owner': True, 'dns_tablespace': True, 'dns_unlogged_tbl_data': True, 'no_comments': True, 'use_insert_commands': True, 'include_create_database': True, 'include_drop_database': True, 'database': 'postgres', 'schemas': ['public']}
data = json.loads(request.data, encoding='utf-8')
# 'objects'
backup_obj_type = data.get('type', 'objects')
try:
# 获取文件路径
# '/var/lib/pgadmin/storage/dangfulin2333_163.com/psche'
backup_file = filename_with_file_manager_path(
data['file'], (data.get('format', '') != 'directory'))
except Exception as e:
return bad_request(errormsg=str(e))
# 获取服务器信息
# <Server 1>
server = get_server(sid)
if server is None:
return make_json_response(
success=0,
errormsg=_("Could not find the specified server.")
)
# To fetch MetaData for the server
from pgadmin.utils.driver import get_driver
driver = get_driver(PG_DEFAULT_DRIVER)
manager = driver.connection_manager(server.id)
conn = manager.connection()
connected = conn.connected()
if not connected:
return make_json_response(
success=0,
errormsg=_("Please connect to the server first.")
)
# 获取备份工具
# '/usr/lib/postgresql/14/bin/pg_dump'
utility = manager.utility('backup') if backup_obj_type == 'objects' \
else manager.utility('backup_server')
ret_val = does_utility_exist(utility)
if ret_val:
return make_json_response(
success=0,
errormsg=ret_val
)
# 工具参数
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/psche', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=data', '--no-tablespaces', '--no-unlogged-table-data', '--inserts', '--no-comments', '--encoding', 'UTF8', '--schema', 'public', 'postgres']
args = _get_args_params_values(
data, conn, backup_obj_type, backup_file, server, manager)
# 这里将参数中的所有双引号转义，因为双引号在shell命令行中具有特殊含义，它们在没有双引号的情况下运行。添加额外的引号以保存我们的双引号。
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/psche', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=data', '--no-tablespaces', '--no-unlogged-table-data', '--inserts', '--no-comments', '--encoding', 'UTF8', '--schema', 'public', 'postgres']
escaped_args = [
escape_dquotes_process_arg(arg) for arg in args
]
try:
# 用 utf-8 编码文件名
bfile = data['file'].encode('utf-8') \
if hasattr(data['file'], 'encode') else data['file']
# 区分不同的备份类型
if backup_obj_type == 'objects': # 备份数据对象（数据库、模式、表）数据
args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/psche', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=data', '--no-tablespaces', '--no-unlogged-table-data', '--inserts', '--no-comments', '--encoding', 'UTF8', '--schema', 'public', 'postgres']
escaped_args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/psche', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=data', '--no-tablespaces', '--no-unlogged-table-data', '--inserts', '--no-comments', '--encoding', 'UTF8', '--schema', 'public', 'postgres']
p = BatchProcess(
desc=BackupMessage(
BACKUP.OBJECT, server.id, bfile,
*args,
database=data['database']
),
cmd=utility, args=escaped_args
)
else: # 备份服务器数据
p = BatchProcess(
desc=BackupMessage(
BACKUP.SERVER if backup_obj_type != 'globals'
else BACKUP.GLOBALS,
server.id, bfile,
*args
),
cmd=utility, args=escaped_args
)
manager.export_password_env(p.id)
# Check for connection timeout and if it is greater than 0 then
# set the environment variable PGCONNECT_TIMEOUT.
if manager.connect_timeout > 0:
env = dict()
env['PGCONNECT_TIMEOUT'] = str(manager.connect_timeout)
p.set_env_variables(server, env=env)
else:
p.set_env_variables(server)
# 创建子进程，执行 pg_dump 命令
p.start()
jid = p.id
except Exception as e:
current_app.logger.exception(e)
return make_json_response(
status=410,
success=0,
errormsg=str(e)
)
# Return response
return make_json_response(
data={'job_id': jid, 'desc': p.desc.message, 'Success': 1}
)
3，备份文件：
sql
--
-- PostgreSQL database dump
--
-- Dumped from database version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Dumped by pg_dump version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Started on 2023-08-24 08:52:15 CST
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
DROP DATABASE postgres;
--
-- TOC entry 3671 (class 1262 OID 13799)
-- Name: postgres; Type: DATABASE; Schema: -; Owner: -
--
CREATE DATABASE postgres WITH TEMPLATE = template0 ENCODING = 'UTF8' LOCALE = 'zh_CN.UTF-8';
\connect postgres
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
--
-- TOC entry 3662 (class 0 OID 24629)
-- Dependencies: 216
-- Data for Name: circles; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3664 (class 0 OID 25273)
-- Dependencies: 218
-- Data for Name: company6; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3665 (class 0 OID 25280)
-- Dependencies: 219
-- Data for Name: department1; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3661 (class 0 OID 24611)
-- Dependencies: 215
-- Data for Name: orders; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3660 (class 0 OID 24580)
-- Dependencies: 213
-- Data for Name: student; Type: TABLE DATA; Schema: public; Owner: -
--
INSERT INTO public.student VALUES (1, 1, 'tname1');
INSERT INTO public.student VALUES (2, 1, 'tname1');
INSERT INTO public.student VALUES (3, 2, 'tname2');
INSERT INTO public.student VALUES (4, 3, 'tname3');
INSERT INTO public.student VALUES (5, 3, 'tname3');
--
-- TOC entry 3663 (class 0 OID 25264)
-- Dependencies: 217
-- Data for Name: t2; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3659 (class 0 OID 24577)
-- Dependencies: 212
-- Data for Name: teacher; Type: TABLE DATA; Schema: public; Owner: -
--
INSERT INTO public.teacher VALUES (1, 'sname1');
INSERT INTO public.teacher VALUES (2, 'sname2');
INSERT INTO public.teacher VALUES (3, 'sname3');
-- Completed on 2023-08-24 08:52:15 CST
--
-- PostgreSQL database dump complete
--6，备份 database
1，对话框：
2，备份信息：
python
@blueprint.route(
'/job/<int:sid>', methods=['POST'], endpoint='create_server_job'
)
@blueprint.route(
'/job/<int:sid>/object', methods=['POST'], endpoint='create_object_job'
)
@login_required
def create_backup_objects_job(sid):
"""
Args:
sid: Server ID
Creates a new job for backup task
(Backup Database(s)/Schema(s)/Table(s))
Returns:
None
"""
# 获取请求
# {'file': 'pdb', 'format': 'plain', 'id': None, 'blobs': True, 'verbose': True, 'encoding': 'UTF8', 'role': 'postgres', 'pre_data': True, 'data': True, 'post_data': True, 'dns_owner': True, 'dns_tablespace': True, 'use_insert_commands': True, 'include_create_database': True, 'include_drop_database': True, 'database': 'postgres'}
data = json.loads(request.data, encoding='utf-8')
# 'objects'
backup_obj_type = data.get('type', 'objects')
try:
# 获取文件路径
# '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb'
backup_file = filename_with_file_manager_path(
data['file'], (data.get('format', '') != 'directory'))
except Exception as e:
return bad_request(errormsg=str(e))
# 获取服务器信息
# <Server 1>
server = get_server(sid)
if server is None:
return make_json_response(
success=0,
errormsg=_("Could not find the specified server.")
)
# To fetch MetaData for the server
from pgadmin.utils.driver import get_driver
driver = get_driver(PG_DEFAULT_DRIVER)
manager = driver.connection_manager(server.id)
conn = manager.connection()
connected = conn.connected()
if not connected:
return make_json_response(
success=0,
errormsg=_("Please connect to the server first.")
)
# 获取备份工具
# '/usr/lib/postgresql/14/bin/pg_dump'
utility = manager.utility('backup') if backup_obj_type == 'objects' \
else manager.utility('backup_server')
ret_val = does_utility_exist(utility)
if ret_val:
return make_json_response(
success=0,
errormsg=ret_val
)
# 工具参数
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
args = _get_args_params_values(
data, conn, backup_obj_type, backup_file, server, manager)
# 这里将参数中的所有双引号转义，因为双引号在shell命令行中具有特殊含义，它们在没有双引号的情况下运行。添加额外的引号以保存我们的双引号。
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
escaped_args = [
escape_dquotes_process_arg(arg) for arg in args
]
try:
# 用 utf-8 编码文件名
bfile = data['file'].encode('utf-8') \
if hasattr(data['file'], 'encode') else data['file']
# 区分不同的备份类型
if backup_obj_type == 'objects': # 备份数据对象（数据库、模式、表）数据
args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
escaped_args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
p = BatchProcess(
desc=BackupMessage(
BACKUP.OBJECT, server.id, bfile,
*args,
database=data['database']
),
cmd=utility, args=escaped_args
)
else: # 备份服务器数据
p = BatchProcess(
desc=BackupMessage(
BACKUP.SERVER if backup_obj_type != 'globals'
else BACKUP.GLOBALS,
server.id, bfile,
*args
),
cmd=utility, args=escaped_args
)
manager.export_password_env(p.id)
# Check for connection timeout and if it is greater than 0 then
# set the environment variable PGCONNECT_TIMEOUT.
if manager.connect_timeout > 0:
env = dict()
env['PGCONNECT_TIMEOUT'] = str(manager.connect_timeout)
p.set_env_variables(server, env=env)
else:
p.set_env_variables(server)
# 创建子进程，执行 pg_dump 命令
p.start()
jid = p.id
except Exception as e:
current_app.logger.exception(e)
return make_json_response(
status=410,
success=0,
errormsg=str(e)
)
# Return response
return make_json_response(
data={'job_id': jid, 'desc': p.desc.message, 'Success': 1}
)
3，备份文件：
sql
--
-- PostgreSQL database dump
--
-- Dumped from database version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Dumped by pg_dump version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Started on 2023-08-24 09:06:19 CST
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
DROP DATABASE postgres;
--
-- TOC entry 3671 (class 1262 OID 13799)
-- Name: postgres; Type: DATABASE; Schema: -; Owner: -
--
CREATE DATABASE postgres WITH TEMPLATE = template0 ENCODING = 'UTF8' LOCALE = 'zh_CN.UTF-8';
\connect postgres
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
--
-- TOC entry 3672 (class 0 OID 0)
-- Dependencies: 3671
-- Name: DATABASE postgres; Type: COMMENT; Schema: -; Owner: -
--
COMMENT ON DATABASE postgres IS 'default administrative connection database';
--
-- TOC entry 3 (class 3079 OID 24634)
-- Name: btree_gist; Type: EXTENSION; Schema: -; Owner: -
--
CREATE EXTENSION IF NOT EXISTS btree_gist WITH SCHEMA public;
--
-- TOC entry 3673 (class 0 OID 0)
-- Dependencies: 3
-- Name: EXTENSION btree_gist; Type: COMMENT; Schema: -; Owner: -
--
COMMENT ON EXTENSION btree_gist IS 'support for indexing common datatypes in GiST';
--
-- TOC entry 2 (class 3079 OID 16394)
-- Name: postgres_fdw; Type: EXTENSION; Schema: -; Owner: -
--
CREATE EXTENSION IF NOT EXISTS postgres_fdw WITH SCHEMA public;
--
-- TOC entry 3674 (class 0 OID 0)
-- Dependencies: 2
-- Name: EXTENSION postgres_fdw; Type: COMMENT; Schema: -; Owner: -
--
COMMENT ON EXTENSION postgres_fdw IS 'foreign-data wrapper for remote PostgreSQL servers';
--
-- TOC entry 225 (class 1255 OID 24616)
-- Name: update_order_status(); Type: FUNCTION; Schema: public; Owner: -
--
CREATE FUNCTION public.update_order_status() RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
IF NEW.total_amount > 1000 THEN
NEW.status := '已审核';
ELSE
NEW.status := '待审核';
END IF;
RETURN NEW;
END;
$$;
--
-- TOC entry 2321 (class 2328 OID 16403)
-- Name: test1; Type: FOREIGN DATA WRAPPER; Schema: -; Owner: -
--
CREATE FOREIGN DATA WRAPPER test1 HANDLER public.postgres_fdw_handler VALIDATOR public.postgres_fdw_validator;
--
-- TOC entry 2322 (class 1417 OID 16401)
-- Name: server1; Type: SERVER; Schema: -; Owner: -
--
CREATE SERVER server1 FOREIGN DATA WRAPPER postgres_fdw OPTIONS (
dbname 'test',
host '172.28.79.200',
port '5432'
);
--
-- TOC entry 3675 (class 0 OID 0)
-- Name: USER MAPPING postgres SERVER server1; Type: USER MAPPING; Schema: -; Owner: -
--
CREATE USER MAPPING FOR postgres SERVER server1 OPTIONS (
password 'postgres',
"user" 'postgres'
);
SET default_table_access_method = heap;
--
-- TOC entry 216 (class 1259 OID 24629)
-- Name: circles; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.circles (
c circle
);
--
-- TOC entry 218 (class 1259 OID 25273)
-- Name: company6; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.company6 (
id integer NOT NULL,
name text NOT NULL,
age integer NOT NULL,
address character(50),
salary real
);
--
-- TOC entry 219 (class 1259 OID 25280)
-- Name: department1; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.department1 (
id integer NOT NULL,
dept character(50) NOT NULL,
emp_id integer NOT NULL
);
--
-- TOC entry 211 (class 1259 OID 16405)
-- Name: ft1; Type: FOREIGN TABLE; Schema: public; Owner: -
--
CREATE FOREIGN TABLE public.ft1 (
port integer
)
SERVER server1;
--
-- TOC entry 215 (class 1259 OID 24611)
-- Name: orders; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.orders (
id integer NOT NULL,
order_date date,
total_amount numeric(10,2),
status character varying(20)
);
--
-- TOC entry 213 (class 1259 OID 24580)
-- Name: student; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.student (
sid integer NOT NULL,
teacher_id integer DEFAULT 0 NOT NULL,
tname character varying(100)
);
--
-- TOC entry 212 (class 1259 OID 24577)
-- Name: teacher; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.teacher (
id integer NOT NULL,
sname character varying(100)
);
--
-- TOC entry 214 (class 1259 OID 24584)
-- Name: student_view; Type: VIEW; Schema: public; Owner: -
--
CREATE VIEW public.student_view AS
SELECT student.sid,
student.teacher_id,
student.tname,
teacher.id,
teacher.sname
FROM (public.student
LEFT JOIN public.teacher ON ((student.teacher_id = teacher.id)));
--
-- TOC entry 217 (class 1259 OID 25264)
-- Name: t2; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE public.t2 (
c1 integer,
c2 text
);
--
-- TOC entry 3662 (class 0 OID 24629)
-- Dependencies: 216
-- Data for Name: circles; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3664 (class 0 OID 25273)
-- Dependencies: 218
-- Data for Name: company6; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3665 (class 0 OID 25280)
-- Dependencies: 219
-- Data for Name: department1; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3661 (class 0 OID 24611)
-- Dependencies: 215
-- Data for Name: orders; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3660 (class 0 OID 24580)
-- Dependencies: 213
-- Data for Name: student; Type: TABLE DATA; Schema: public; Owner: -
--
INSERT INTO public.student VALUES (1, 1, 'tname1');
INSERT INTO public.student VALUES (2, 1, 'tname1');
INSERT INTO public.student VALUES (3, 2, 'tname2');
INSERT INTO public.student VALUES (4, 3, 'tname3');
INSERT INTO public.student VALUES (5, 3, 'tname3');
--
-- TOC entry 3663 (class 0 OID 25264)
-- Dependencies: 217
-- Data for Name: t2; Type: TABLE DATA; Schema: public; Owner: -
--
--
-- TOC entry 3659 (class 0 OID 24577)
-- Dependencies: 212
-- Data for Name: teacher; Type: TABLE DATA; Schema: public; Owner: -
--
INSERT INTO public.teacher VALUES (1, 'sname1');
INSERT INTO public.teacher VALUES (2, 'sname2');
INSERT INTO public.teacher VALUES (3, 'sname3');
--
-- TOC entry 3513 (class 2606 OID 24633)
-- Name: circles circles_c_excl; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY public.circles
ADD CONSTRAINT circles_c_excl EXCLUDE USING gist (c WITH &&);
--
-- TOC entry 3515 (class 2606 OID 25279)
-- Name: company6 company6_pkey; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY public.company6
ADD CONSTRAINT company6_pkey PRIMARY KEY (id);
--
-- TOC entry 3517 (class 2606 OID 25284)
-- Name: department1 department1_pkey; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY public.department1
ADD CONSTRAINT department1_pkey PRIMARY KEY (id);
--
-- TOC entry 3511 (class 2606 OID 24615)
-- Name: orders orders_pkey; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY public.orders
ADD CONSTRAINT orders_pkey PRIMARY KEY (id);
--
-- TOC entry 3508 (class 2606 OID 25272)
-- Name: student student_ck; Type: CHECK CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE public.student
ADD CONSTRAINT student_ck CHECK ((sid > 0)) NOT VALID;
--
-- TOC entry 3676 (class 0 OID 0)
-- Dependencies: 3508
-- Name: CONSTRAINT student_ck ON student; Type: COMMENT; Schema: public; Owner: -
--
COMMENT ON CONSTRAINT student_ck ON public.student IS '检查约束';
--
-- TOC entry 3518 (class 1259 OID 25290)
-- Name: fki_C; Type: INDEX; Schema: public; Owner: -
--
CREATE INDEX "fki_C" ON public.department1 USING btree (emp_id);
--
-- TOC entry 3509 (class 1259 OID 24604)
-- Name: index_test; Type: INDEX; Schema: public; Owner: -
--
CREATE INDEX index_test ON public.student USING btree (tname COLLATE "C" bpchar_pattern_ops);
--
-- TOC entry 3677 (class 0 OID 0)
-- Dependencies: 3509
-- Name: INDEX index_test; Type: COMMENT; Schema: public; Owner: -
--
COMMENT ON INDEX public.index_test IS '测试';
-- Completed on 2023-08-24 09:06:20 CST
--
-- PostgreSQL database dump complete
--7，备份服务器
1，对话框
2，备份信息
python
@blueprint.route(
'/job/<int:sid>', methods=['POST'], endpoint='create_server_job'
)
@blueprint.route(
'/job/<int:sid>/object', methods=['POST'], endpoint='create_object_job'
)
@login_required
def create_backup_objects_job(sid):
"""
Args:
sid: Server ID
Creates a new job for backup task
(Backup Database(s)/Schema(s)/Table(s))
Returns:
None
"""
# 获取请求
# {'file': 'localhostserver', 'format': 'plain', 'id': None, 'blobs': False, 'verbose': True, 'encoding': 'UTF8', 'role': 'postgres', 'only_data': True, 'dns_owner': True, 'dns_privilege': True, 'dns_tablespace': True, 'use_insert_commands': True, 'disable_trigger': True, 'disable_quoting': True, 'type': 'server'}
data = json.loads(request.data, encoding='utf-8')
# 'server'
backup_obj_type = data.get('type', 'objects')
try:
# 获取文件路径
# '/var/lib/pgadmin/storage/dangfulin2333_163.com/localhostserver'
backup_file = filename_with_file_manager_path(
data['file'], (data.get('format', '') != 'directory'))
except Exception as e:
return bad_request(errormsg=str(e))
# 获取服务器信息
# <Server 1>
server = get_server(sid)
if server is None:
return make_json_response(
success=0,
errormsg=_("Could not find the specified server.")
)
# To fetch MetaData for the server
from pgadmin.utils.driver import get_driver
driver = get_driver(PG_DEFAULT_DRIVER)
manager = driver.connection_manager(server.id)
conn = manager.connection()
connected = conn.connected()
if not connected:
return make_json_response(
success=0,
errormsg=_("Please connect to the server first.")
)
# 获取备份工具
# '/usr/lib/postgresql/14/bin/pg_dumpall'
utility = manager.utility('backup') if backup_obj_type == 'objects' \
else manager.utility('backup_server')
ret_val = does_utility_exist(utility)
if ret_val:
return make_json_response(
success=0,
errormsg=ret_val
)
# 工具参数
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/localhostserver', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--database', 'postgres', '--verbose', '--role', 'postgres', '--data-only', '--disable-triggers', '--no-owner', '--no-privileges', '--no-tablespaces', '--inserts', '--disable-dollar-quoting', '--encoding', 'UTF8']
args = _get_args_params_values(
data, conn, backup_obj_type, backup_file, server, manager)
# 这里将参数中的所有双引号转义，因为双引号在shell命令行中具有特殊含义，它们在没有双引号的情况下运行。添加额外的引号以保存我们的双引号。
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/localhostserver', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--database', 'postgres', '--verbose', '--role', 'postgres', '--data-only', '--disable-triggers', '--no-owner', '--no-privileges', '--no-tablespaces', '--inserts', '--disable-dollar-quoting', '--encoding', 'UTF8']
escaped_args = [
escape_dquotes_process_arg(arg) for arg in args
]
try:
# 用 utf-8 编码文件名
# '/var/lib/pgadmin/storage/dangfulin2333_163.com/localhostserver'
bfile = data['file'].encode('utf-8') \
if hasattr(data['file'], 'encode') else data['file']
# 区分不同的备份类型
if backup_obj_type == 'objects': # 备份数据对象（数据库、模式、表）数据
args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
escaped_args.append(data['database'])
# ['--file', '/var/lib/pgadmin/storage/dangfulin2333_163.com/pdb', '--host', '127.0.0.1', '--port', '5432', '--username', 'postgres', '--no-password', '--verbose', '--role', 'postgres', '--format=p', '--no-owner', '--create', '--clean', '--section=pre-data', '--section=data', '--section=post-data', '--no-tablespaces', '--inserts', '--encoding', 'UTF8', 'postgres']
p = BatchProcess(
desc=BackupMessage(
BACKUP.OBJECT, server.id, bfile,
*args,
database=data['database']
),
cmd=utility, args=escaped_args
)
else: # 备份服务器数据
p = BatchProcess(
desc=BackupMessage(
BACKUP.SERVER if backup_obj_type != 'globals'
else BACKUP.GLOBALS,
server.id, bfile,
*args
),
cmd=utility, args=escaped_args
)
manager.export_password_env(p.id)
# Check for connection timeout and if it is greater than 0 then
# set the environment variable PGCONNECT_TIMEOUT.
if manager.connect_timeout > 0:
env = dict()
env['PGCONNECT_TIMEOUT'] = str(manager.connect_timeout)
p.set_env_variables(server, env=env)
else:
p.set_env_variables(server)
# 创建子进程，执行 pg_dump 命令
p.start()
jid = p.id
except Exception as e:
current_app.logger.exception(e)
return make_json_response(
status=410,
success=0,
errormsg=str(e)
)
# Return response
return make_json_response(
data={'job_id': jid, 'desc': p.desc.message, 'Success': 1}
)
- 与备份表、schema、database 时使用 dump 不同的是，备份 server 时使用 dumpall
3，备份文件
sql
--
-- PostgreSQL database cluster dump
--
-- Started on 2023-08-24 09:15:36 CST
SET default_transaction_read_only = off;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
--
-- Databases
--
--
-- Database "template1" dump
--
\connect template1
--
-- PostgreSQL database dump
--
-- Dumped from database version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Dumped by pg_dump version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Started on 2023-08-24 09:15:36 CST
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
-- Completed on 2023-08-24 09:15:36 CST
--
-- PostgreSQL database dump complete
--
--
-- Database "postgres" dump
--
\connect postgres
--
-- PostgreSQL database dump
--
-- Dumped from database version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Dumped by pg_dump version 14.9 (Ubuntu 14.9-0ubuntu0.22.04.1)
-- Started on 2023-08-24 09:15:36 CST
SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;
--
-- TOC entry 3660 (class 0 OID 24629)
-- Dependencies: 216
-- Data for Name: circles; Type: TABLE DATA; Schema: public; Owner: -
--
SET SESSION AUTHORIZATION DEFAULT;
ALTER TABLE public.circles DISABLE TRIGGER ALL;
ALTER TABLE public.circles ENABLE TRIGGER ALL;
--
-- TOC entry 3662 (class 0 OID 25273)
-- Dependencies: 218
-- Data for Name: company6; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.company6 DISABLE TRIGGER ALL;
ALTER TABLE public.company6 ENABLE TRIGGER ALL;
--
-- TOC entry 3663 (class 0 OID 25280)
-- Dependencies: 219
-- Data for Name: department1; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.department1 DISABLE TRIGGER ALL;
ALTER TABLE public.department1 ENABLE TRIGGER ALL;
--
-- TOC entry 3659 (class 0 OID 24611)
-- Dependencies: 215
-- Data for Name: orders; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.orders DISABLE TRIGGER ALL;
ALTER TABLE public.orders ENABLE TRIGGER ALL;
--
-- TOC entry 3658 (class 0 OID 24580)
-- Dependencies: 213
-- Data for Name: student; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.student DISABLE TRIGGER ALL;
INSERT INTO public.student VALUES (1, 1, 'tname1');
INSERT INTO public.student VALUES (2, 1, 'tname1');
INSERT INTO public.student VALUES (3, 2, 'tname2');
INSERT INTO public.student VALUES (4, 3, 'tname3');
INSERT INTO public.student VALUES (5, 3, 'tname3');
ALTER TABLE public.student ENABLE TRIGGER ALL;
--
-- TOC entry 3661 (class 0 OID 25264)
-- Dependencies: 217
-- Data for Name: t2; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.t2 DISABLE TRIGGER ALL;
ALTER TABLE public.t2 ENABLE TRIGGER ALL;
--
-- TOC entry 3657 (class 0 OID 24577)
-- Dependencies: 212
-- Data for Name: teacher; Type: TABLE DATA; Schema: public; Owner: -
--
ALTER TABLE public.teacher DISABLE TRIGGER ALL;
INSERT INTO public.teacher VALUES (1, 'sname1');
INSERT INTO public.teacher VALUES (2, 'sname2');
INSERT INTO public.teacher VALUES (3, 'sname3');
ALTER TABLE public.teacher ENABLE TRIGGER ALL;
-- Completed on 2023-08-24 09:15:36 CST
--
-- PostgreSQL database dump complete
--
-- Completed on 2023-08-24 09:15:36 CST
--
-- PostgreSQL database cluster dump complete
--