Main Library ConfigurationPg_hba.confHost replication All 10.2.0.0/0 TrustPostgresql.conflisten_addresses = ' * ' max_wal_senders = 5wal_level = Hot_standbyRestarting the main libraryConfigure from LibraryInstallationInstall with Yum (source http://yum.postgresql.org/)Yum Install https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-7-x86_64/ Pgdg-centos95-9.5-2.noarch.rpmyum Install Postgresql95-server Postgresql95-contribGenerate base Backup (primary database IP 10.2.0.14)Pg_basebackup
Label:First, the environment$ psql--version
psql (PostgreSQL) 9.4.4 As we all know, superuser privileges are too large for the security of the database, for non-administrator accounts, you need to create a normal user. Second, the grammar$psql psql (9.4.4) type "Help" forhelp.
postgres=#\hcreaterole Command:createrole Description:defineanewdatabaserole syntax:createrolename[ [with]option[...]] Whereoptioncanbe: superuser|nosuperuser |CREATEDB| Nocre
facing similar challenges when running MySQL, and the cooperation between their engineers. The branch and evolution of PostgreSQL Yahoo everest-multi-peta-byte database/mpp derived by PostgreSQL. A mixture of hadoopdb:mapreduce and DBMS; IBM Netezza: High-performance data warehousing equipment; POSTGRES-XL: A scalable open source database cluster based on PostgreSQL; RECDB: An open source recommendatio
First, the environment#配置远程连接su postgres vim/var/lib/pgsql/9.4/data/postgresql.conf Edit configuration file listen_address= ' localhost ' before the comment # removed,And the ' localhost ' should be ' * '; vim/etc/postgresql/8.2/main/pg_hba.conf host all 192.168.1.0/24 password password can be set to Trust/etc/init.d/postgre sql-8.2 Restart Restart Service: There is the Stop start command as well. If a configuration error can cause a restartSecond, th
Label:Reference: https://hub.docker.com/_/postgres/ https://docs.docker.com/engine/installation/debian/ Using Docker for multi-instance installation is simpler, more convenient, and better isolated than the source code. Installing Docker
Update the installation source
sudo apt-key adv--keyserver HKP://p80.pool.sks-keyservers.net:80--recv-keys 58118e89f3a912897c070adbf76221572c52609d
sudotouch /etc/apt/sources.list.d/ Docker.list
su
PostgreSQL is an object-relational database management system (ORDBMS) based on POSTGRES, Version 4.2, developed by the University of California, Berkeley computer department. Many of the concepts pioneered by Postgres appear in the commercial database for a long time. PostgreSQL is an open source successor to the original Berkeley code. It supports most of the SQL standards and offers many other modern fea
updated, and this time the file is merged, and the text is purged by merging the data. when will the data be exported? Exporting Data isHadoopwe may need to download a data mart to export the data based on this market, soSqoopYou can also export the data. SqoopThe mechanism for exporting is: The default isMySQL,MySQLLess efficient, then choose the second way---Direct mode, using some of the export tools provided by the database itself. But the efficiency of these export tools is not high enough
Detailed steps for creating the ipvs-XL Cluster
Recently, the company's business needs to use ipvs-XL clusters. There is not much network information about this part of knowledge. After a period of query and various detours, the installation was finally completed. Complete the detailed steps for reference. We also hope to help those who need it.
Let's get started:
Host list and role allocation for cluster Installation
10.21.13.109 GTM10.21.13.67 coordinator datanode10.21.13.60 datanode
2. creat
PostgreSQL is a very complex object-relational database management system (ORDBMS), and is currently the most powerful, feature richest and most complex free software database system.os:centos6.5 x64ip:192.168.85.130Hostname:vm2.lansgg.comPG Version: POSTGRESQL-9.2.4.TAR.BZ2One, yum installationSecond, the source code installationThird, the system database1. Yum Installation[Email protected] ~]# wget [[email protected] ~]# rpm-vhi pgdg-redhat92-9.2-8.noarch.rpm[[email protected] ~]# yum Insta ll
I. INTRODUCTION to psql is a PostgreSQL command line interactive client tool, similar to the command line tool sqlplus: 1 in Oracle allows you to interactively type SQL or commands, then they are sent to the PostgreSQL server, and then the SQL or command results are displayed; 2 input
I. INTRODUCTION to psql
Psql is a PostgreSQL command line interactive client tool, similar to the command line tool sqlplus in Oracle:
1. allow you to interactively type SQL or commands, then send them to the Postg
CST 2018 on pts/0-bash-4.2$ createuser-u postgres repuser-p-C 5--replicationEnter Password for new role:Enter It again:-bash-4.2$To set the root user password-bash-4.2$ psql-h 127.0.0.1Psql (10.3)Type ' help ' for help.postgres=#postgres=# alter user postgres with password ' 123456 ';2). configuration fileA. postgresql.conf#--------------------------------------
Tags: and CTS use update MNT also has check server testIn Oracle, deleting a table or deleting a table record; There is a flashback feature that does not require a stop operation and can perfectly retrieve the record. There are, of course, some other recovery tools, such as ODU tools, Gdul tools. can retrieve data. PostgreSQL currently does not have a flashback feature. How to recover the data mistakenly deleted in the non-stop condition. Fortunately there is a full hot backup. The method descri
, all objects will revert to the default tablespace when the Pg_restore is executed.
--no-unlogged-table-data
For a data table that does not count into a log (unlogged), its data is not exported, and it depends on other options for exporting its schema information.
-H (--host=host)
Specifies the host name of the PostgreSQL server.
-P (--port=port)
Specifies the listening port for the server, or the default 5432 if unspecified.
-U (--use
business scenarios where data accuracy is required, such as banks, compared to the fload/double type. Installation:这两个数据类型需要在数据库初始化以后,通过命令加载到需要的数据库中:[emailprotected]:~$ source deepgreendb/greenplum_path.sh[emailprotected]:~$ cd $GPHOME/share/postgresql/contrib/[emailprotected]:~/deepgreendb/share/postgresql/contrib$ psql postgres -f pg_decimal.sqlTest a piece:Use statement: Select AVG (x), sum (2*x) from table data Volume: 1 million [emailprotected]:
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