Come with me to understand gaussdb (for opengauss) [Gauss is not a mathematician this time]

1、 brief introduction

---

GaussDB(for openGauss) It is a self-developed enterprise level distributed relational database built by Huawei , This product has the ability of enterprise level complex transaction mixed load , At the same time, it supports excellent distributed transactions , Across the city AZ Deploy , data 0 The loss of , Support 1000+ Expand capabilities ,PB Enterprise class database features such as mass storage . Have high availability on the cloud , Highly reliable , High security , Stretch and stretch , One key deployment , Fast backup recovery , Monitoring, warning and other key capabilities , It can provide comprehensive functions for enterprises , Stable and reliable , Extensibility is strong , Enterprise database service with superior performance . At the same time, Huawei is open source openGauss Stand alone active / standby community version , Encourage more partners 、 Developers will jointly prosper China's database ecology .

2、 The overall architecture

---

GaussDB(for openGauss) The overall architecture of the distributed form is as follows ：

3、 Product advantage

---

3.1、 High security

GaussDB(for openGauss) Have TOP Level commercial database security features ： Data dynamic desensitization ,TDE Transparent encryption , Row level access control , Dense state calculation . It can meet the needs of government and enterprises & The core security demands of financial customers .

3.2、 High availability

Support cross machine room 、 Same city 、 Off site 、 More flexible and more available , Support distributed strong consistency , data 0 The loss of （RPO=0 PTO<30 second ）.

3.3、 High expansion

Through distributed global transaction consistency optimization , Break the traditional distributed performance bottleneck , Realize the free horizontal scalability of computing and storage , At the same time, it supports the data online of new partitions .

3.4、 High performance

Strong performance ,32 Node size provides up to 1500 ten thousand tpmC Transaction processing capabilities of .3 node TPCH Standard performance pressure test ,500GB < 200s,1000GB < 500s, The maximum data volume of a single cluster exceeds 4PB.

4、 Application scenarios

---

4.1、 Transactional applications

Big concurrent 、 Large amount of data 、 Transaction oriented application based on online transaction processing , Such as government affairs 、 Finance 、 Online retailers 、O2O、 telecom CRM/ Billing, etc , Service capability supports high expansion 、 Elastic expansion and contraction , Applications can choose different deployment scales as required .

4.2、 Detailed list inquiry

Have PB Level data load capacity , Through memory analysis technology to meet the requirements of massive data storage and query , For safety 、 telecom 、 Finance 、 Detailed order inquiry business in the Internet of things and other industries .

5、 Operation instruction

---

5.1、 technological process

flow chart

5.2、 Log in to the console

Operation steps

1. Log in to the administration console .
2. Click... In the upper left corner of the administration console , Select areas and projects .

1. Click... In the upper left corner of the page , choice “ database >  Cloud database GaussDB”. Get into Cloud database GaussDB Information page .

   2.  In the left navigation bar, select GaussDB(for openGauss) > Instance management .

   Get into GaussDB(for openGauss) Information page .

5.3、 Purchase instance

1. stay “ Instance management ” page , single click “ Purchase database instance ”.

1. On the create instance page , Select billing mode , Fill in and select the instance related information , single click “ Buy now ”.

chart 1  Billing mode and basic information

chart 2  Specification and storage

Network and database configuration

For on-demand instances , Confirm the specification .

5.4、 The connection instance

1. Log in to the elastic ECS of the application .
2. On the elastic ECS of the application , Upload the client toolkit and configure gsql Execution environment variable of .
   1. With root The user logs in to the client machine .
   2. establish “/tmp/tools” Catalog .

mkdir /tmp/tools

1. obtain GaussDB(for openGauss) software package “GaussDB_opengauss_client_tools.zip” And extract the .
2. Enter different directories according to the operating system architecture of the applied elastic ECs , obtain “GaussDB-Kernel-xxx-EULER-64bit-gsql.tar.gz”, And upload it to the elastic ECS of the application “/tmp/tools” Under the path .
3. Unzip the file .

f.  cd /tmp/toolstar -zxvf GaussDB-Kernel-xxx-EULER-64bit-gsql.tar.gz

xxx Version number , Please replace according to the actual situation .

    Set the environment variable .

open “~/.bashrc” file .

vi ~/.bashrc

Press down i Key in INSERT Pattern , Enter the following into it , single click “ESC” Exit edit mode , Use “:wq!” Command save and exit .

export PATH=/tmp/tools/bin:$PATHexport LD_LIBRARY_PATH=/tmp/tools/lib:$LD_LIBRARY_PATH

Make the environment variable configuration work .

source ~/.bashrc

1. Execute the following instructions , Enter the password as prompted , Connect to database .

After the database is created successfully , The default generation name is postgres The database of .

gsql -d postgres -h 10.0.0.0 -U root -p 8000Password for user root:

postgres The name of the database to be connected ,10.0.0.0 Distributed as CN Of IP Address , The primary and standby versions are primary DN Of IP Address ,root Is the user name to log in to the database ,8000 by CN Port number .

SSL Connect

1. Log in to the administration console .
2. stay “ Instance management ” page , Click the instance name to enter “ essential information ” page , single click “ database information ” modular “SSL” Situated , Download the root certificate or bundle .
3. Upload the root certificate to the required connection GaussDB(for openGauss) Elastic ECS of the instance , Or save to a device that can access the database instance .

Import the root certificate into the elastic ECs Linux operating system , Please see the Import the root certificate into Windows/Linux operating system .

    4. Connect GaussDB(for openGauss) example . With Linux System as an example , Set the environment variable , Execute the following command .

5.  export PGSSLMODE=<sslmode>export PGSSLROOTCERT=<ca-file-directory>

    5. Set the environment variable , Use root user SSL Connect postgres Database instance , Examples are as follows ：

export PGSSLMODE="verify-ca"export PGSSLROOTCERT="/home/Ruby/ca.pem"gsql -d postgres -h 10.0.0.0 -U root -p 8000Password for user root:

    6.  After logging into the database , The following information appears , Said by SSL Successful connection .

SSL connection (cipher: DHE-RSA-AES256-GCM-SHA384, bits: 256)

---

【 Gauss is not a mathematician this time 】 The award-winning essay solicitation is in full swing ：https://bbs.huaweicloud.com/blogs/345260