Selection best practices explain
Selection is not about choosing an instance specification , It's about understanding the key features of instance specifications , In stock shortage 、 The product is offline 、 Use preemptive instances and other scenarios , You can have a variety of alternative instance specifications , make the best of Alibaba cloud ECS Flexible features .
We are choosing Aliyun server When it comes to configuration , Most users choose 1 nucleus 2G,2 nucleus 4G,4 nucleus 8G,4 nucleus 16G,8 nucleus 16 These common configurations , Some novice users are making sure CPU And memory configuration , Often do not know how to choose instance specification , It may be helpful to refer to the following optional instance specifications and usage scenarios for common configurations .
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Understand the instance specification family
Start one ECS Before the example , You need to combine performance 、 Price 、 Workload and other factors , Make decisions that are cost-effective and stable . According to the business scenario and vCPU、 Memory 、 network performance 、 Storage throughput and other configuration division , Alibaba cloud ECS Provides a variety of instance specification families , An instance specification family includes multiple instance specifications . The format of instance specification family name is ecs.< Specification family >, The instance specification name is ecs.< Specification family >.<nx>large.
- ecs： Cloud server ECS The product code of .
< Specification family >： It consists of small letters and numbers .
A lowercase letter is an abbreviation of a word , And it marks the performance area of the specification family . The meaning of some lowercase letters is as follows .
- c： Generally, it means computational （computational）
- g： Generally speaking, it means universal （general）
- r： Generally, it means memory type （ram）
- ne： Generally, it means network enhanced （network enhanced）
- Numbers generally distinguish the release time between the same type of specification family . Larger numbers represent the next generation of specification families , Have a higher cost performance , Low price, good performance .
- <nx>large： Represents the instance specification has vCPU Check the number ,n The bigger it is ,vCPU The higher the number of cores .
for example ,ecs.g6.2xlarge For universal g6 An instance specification in a specification family , Have 8 individual vCPU nucleus . Compared with g5、g4、sn2ne Specification family ,g6 It is a new generation of generic instance specification family .
Start the selection
In order to make it convenient for you to compare the performance of the instance when selecting the model , You can learn more about the instance from the following ways .
- Instance specification family ： Refer to the documentation for product details of the instance specification family , You don't need an account to log in .
DescribeInstanceTypes： call ECS API, Get the latest performance specifications , But you need to have a registered account .
aliyun ecs DescribeInstanceTypes --InstanceTypeFamily ecs.g6- Cloud product pricing page ： understand ECS Pricing information for resources 、 The latest offer 、 And a preliminary estimate of the cost of use .
- ECS Custom purchase page ： In the instance configuration section of the basic configuration page , Learn more about shopping guide .
Choose according to the usage scenario
The figure below shows Alibaba cloud ECS Some instance specification families and their corresponding business scenarios .
According to the typical application, it is recommended that
If you are using a software or application similar to the one in the figure below , You can select the instance specification family on the right .
Self built service selection recommendation
If you are a self built service , Depending on the application you use , And refer to the selection principle , Select the corresponding instance specification family .
The application type
Common applications
Selection principle
Recommend instance specification family
Load balancing
Nginx
Application features ： Need to support high frequency of new connection operations .
- CPU Ability to calculate ： The demand is higher .
- Memory ： Not very demanding .
c6、hfc6 series
RPC product
- SOFA
- Dubbo
Application features ： Network link intensive ; The process runs at a high memory consumption .
g6 series
cache
- Redis
- Memcache
- Solo
- CPU Ability to calculate ： Not very demanding .
- Memory ： The demand is higher .
- Instance specification family ：r6、re6 series
- Block storage ：SSD Cloud disk or ESSD Cloud disk
Configuration center
ZooKeeper
There will be a lot of I/O Read and write operations .
- CPU Ability to calculate ： Not very demanding .
- Memory ： Not very demanding .
- Instance specification family ：c6 series
- Block storage ：SSD Cloud disk or ESSD Cloud disk
Message queue
- Kafka
- RabbitMQ
In terms of message integrity , Cloud disk is preferred for storage .
- CPU Ability to calculate ： Not very demanding .
- Memory and vCPU The ratio is usually 1:1.
- Storage ： Not very demanding .
- Instance specification family ：c6 series
- Block storage ：SSD Cloud disk or ESSD Cloud disk
Container arrangement
Kubernetes
Through the combination of dragon and container , Can maximize the potential of Computing .
ebmc6、ebmg6 series
Big table storage
HBase
- Generally, you can choose d series .
- If the business exists super high IOPS（Input/Output Operations Per Second） demand , You can choose i series .
- d1、d1ne、d2s series
- i2 series
database
- MySQL
- NoSQL
- There is a need for elastic expansion of storage , You can choose ECS and ESSD.
- about I/O The needs of sensitive businesses , Preference i series .
- Example specifications ：c6、g6、r6 series
Block storage ：ESSD Cloud disk
- i2 series
SQLServer
- because Windows Of I/O Single channel features , Yes I/O The requirement of reading and writing ability is high , Preference ESSD.
- ECS The logical and physical sectors of are set to 4K.
- Instance specification family ：c6、g6、r6 series
- Block storage ：ESSD Cloud disk
Text search
Elasticsearch
- Choose memory and vCPU With a bigger one ECS specifications .
- Daily need to export database data to ES file , Yes I/O There are requirements for reading and writing .
- Example specifications ：g6 series
Block storage ：ESSD Cloud disk
- d1、d1ne、d2s series
Real time computing
- Flink
- Blink
Based on the amount of storage, you can choose ECS General specifications and cloud disk , You can also choose d series .
d1、d1ne、d2s series
Offline computing
- Hadoop
- HDFS
- CDH
Preference d series .
d1、d1ne、d2s series
Common scenarios 、 Game clothes 、 Live video scene recommendation
In this kind of scenario , Performance requirements are expressed as CPU Computationally intensive , You need a relatively balanced ratio of processor and memory resources , Generally selected CPU Match with memory 1:2、 High efficiency cloud disk is selected as the system disk 、 Data disk selection SSD Cloud disk or ESSD Cloud disk . If the business needs stronger network performance , Such as video barrage, etc , You can choose a higher specification instance specification in the same series , Improve the network receiving and contracting ability （PPS）.
Scene classification
Scene segmentation
Recommended specification family
Performance requirements
Processor to memory ratio
General applications
Balanced performance applications , Background applications
g series , Such as g6
Medium dominant frequency , Computationally intensive
1:4
High network receiving and contracting application
g series , Such as g6
High network PPS, Computationally intensive
1:4
High performance computing
c series , Such as c6
High dominant frequency , Computationally intensive
1:2
Game applications
High performance end game
c series , Such as c6
High dominant frequency
1:2
Mobile Games 、 Page to swim
g series , Such as g6
Medium dominant frequency
1:4
Live video
Video forwarding
g series , Such as g6
Medium dominant frequency , Computationally intensive
1:4
Live barrage
g series , Such as g6
High network PPS, Computationally intensive
1:4
Hadoop、Spark、Kafka Big data scenario recommendation
In this kind of scenario , Because it involves different nodes , Performance requirements are more complex , You need to balance the performance of each node , Including calculation 、 Storage throughput 、 Network performance, etc .
- The management node ： Treat as a generic scenario , Please see the Common scenarios 、 Game clothes 、 Live video scene recommendation chapter .
- Computing node ： Treat as a generic scenario , Please see the Common scenarios 、 Game clothes 、 Live video scene recommendation chapter . Depending on the size of the cluster , Different instance specifications need to be selected . for example 100 You can choose from the following nodes ecs.g6.4xlage,100 More than nodes can be selected ecs.g6.8xlage.
explain Computing node can adopt preemptive instance in billing mode , Achieve cost performance optimization . For more details , Please see the Overview of preemptive examples .
- Data nodes ： Requires high storage throughput 、 High network throughput 、 Balanced processor to memory ratio , It is recommended that you use big data type d Series specification family . for example MapReduce/Hive Can choose ecs.d1ne.6xlarge,Spark/Mlib Can choose ecs.d1ne.8xlarge.
database 、 cache 、 Search scene recommendation
In this kind of scenario , The ratio of processor to memory of instance specification is generally higher than 1:4, Part of the software to store I/O Reading and writing ability, timeliness and ductility can be more sensitive , It is recommended that you choose the specification family with high cost performance per unit memory .
Scene classification
Scene segmentation
Recommended specification family
Processor to memory ratio
Data disk
Relational database
High performance , Depending on the application layer, high availability
i series
1:4
Local SSD Storage 、 Efficient cloud disk 、SSD Cloud disk
Small and medium databases
g series , Or other memory proportion is 1:4 Specification family of
1:4
Efficient cloud disk 、SSD Cloud disk
High performance database
r series
1:8
Efficient cloud disk 、SSD Cloud disk
Distributed cache
Memory consumption scenarios in
g series , Or other memory proportion is 1:4 Specification family of
1:4
Efficient cloud disk 、SSD Cloud disk
High memory consumption scenarios
r series
1:8
Efficient cloud disk 、SSD Cloud disk
NoSQL database
High performance , Application layer height is available
i series
1:4
Local SSD Storage 、 Efficient cloud disk 、SSD Cloud disk
Small and medium databases
g series , Or other memory proportion is 1:4 Specification family of
1:4
Efficient cloud disk 、SSD Cloud disk
High performance database
r series
1:8
Efficient cloud disk 、SSD Cloud disk
ElasticSearch
Small cluster , Rely on cloud disk to ensure high availability of data
g series , Or other memory proportion is 1:4 Specification family of
1:4
Efficient cloud disk 、SSD Cloud disk
Big clusters , High availability
d series
1:4
Local SSD Storage 、 Efficient cloud disk 、SSD Cloud disk
Take the database for example , In the traditional way , The business system is directly connected to OLTP database , Data redundancy is mostly through RAID Disk array implementation . choice Alibaba cloud ECS, Your light load 、 All overloaded databases can be deployed flexibly .
- Light load database ： Use enterprise class instance specification with cloud disk , Higher cost performance .
- Overloading the database ： High storage required IOPS And low read / write latency , It is recommended that you use local SSD type i Series instance specification family （ With high I/O Type local NVMeSSD Local dish ）, To meet the requirements of large and overloaded database .
Deep learning 、 Image processing scene recommendation
In this kind of scenario , Applications need high performance GPU Accelerator , stay GPU and CPU The following suggestions are made on the proportioning .
- Deep learning training ：GPU And CPU The recommended ratio is 1:8 To 1:12 Between .
- General deep learning ：GPU And CPU The recommended ratio is 1:4 To 1:48 Between .
- Image recognition reasoning ：GPU And CPU The recommended ratio is 1:4 To 1:12 Between .
- Speech recognition and synthetic reasoning ：GPU And CPU The recommended ratio is 1:16 To 1:48 Between .
Verification and adjustment
When you complete the selection and start using ECS After the instance , It is recommended that you monitor information based on performance over a period of time , Verify that the selected instance specification is appropriate .
Suppose you choose ecs.g6.xlarge, Find instances through monitoring CPU Usage has been low , It is recommended that you log in to the instance to check whether the memory utilization is high , If the memory consumption is high , You can adjust to a more appropriate specification family for processor to memory resource ratio . For more details , Please refer to the following documentation ：
- ECS Bring your own monitoring service
- View cloud disk monitoring information
- Host monitoring Overview
Use cloud server ECS In the process of , If there is a shortage of inventory in the region 、 Instance specification family is off sale 、 Change to a more cost-effective specification family 、 Upgrade configuration, etc , You can change the configuration according to the characteristics of the instance specification family . The following table lists the configuration modification recommendations for some instance specification families , For more details , Please see the Summary of lifting and lowering modes And Introduction of example specification configuration change .
Current instance specification family
Preferred recommendation
Alternative recommendation
sn1、sn2
- c6
- g6
- r6
- c5、sn1ne
- g5、sn2ne
- r5、se1ne
c4
hfc6、c6
hfc5、c5
ce4
r6
r5、se1ne
cm4
hfc6
hfc5、g5
n1、n2、e3
- c6
- g6
- r6
- c5、sn1ne
- g5、sn2ne
- r5、se1ne
- t1
- s1、s2、s3
- m1、m2
- c1、c2
- c6
- g6
- r6
- c5、sn1ne
- g5、sn2ne
- r5、se1ne
Other related links
More application scenarios , Please see the Enterprise level configuration selection . Alibaba cloud Word of mouth for millions of users , Popular cloud products are highly recommended , Just follow me ,618 In the middle of the year, sales promotion is going on , Click to see
