plawansai

Amazon Web Services (AWS)
3 วิธีการ Migrate Server ไปยัง Cloud ได้อย่างง่ายดาย!: blog.cloudhm.co.th/migrate-to-cloud Terminal Server / Remote Desktop Services (RDS) vs Virtual Desktop Infrastructure (VDI) แตกต่างกันอย่างไร?: blog.cloudhm.co.th/terminal-server-rds-vs-vdi 3…

Comment by plawansai July 18 permalink
CCNP Enterprise
Common Spanning Tree Protocols (STP): Lab 6: www.youtube.com/watch?v=g3UlDOX0ePA Need redundancy, but there will be a broadcast message!What will happen?Then how can prevent what is called a 'LOOP', AKA 'Broadcast Storm'?STP req…

Comment by plawansai July 17 permalink
CCNP Enterprise
https://developer.cisco.com/site/sandbox https://github.com/openconnect/openconnect-gui/releases Data Path Virtualization: Virtual Routing & Forwarding (VRF):For Service ProvidersWith multiple clientsisolate each client in a 'Routing Tab…

Comment by plawansai July 6 permalink
CCNP Enterprise
Quality of Service (QoS): if traffic was more than bandwidth!if congestion WILL happen, can some traffic be more preferred than another?Generally, UDP will be preferred over TCP (TCP will automatically do A re-transmission)QoS Tools that will do th…

Comment by plawansai July 4 permalink
CCNP Enterprise
Tier 2 will be for Small/Mid networks: One building networkOnly 2 Tiers (Access and Aggregation)Access: The first layer facies/authenticates endpoint devicesConnects the endpoint to their gateways (aggregation)Aggregation: Aggregates/Communicates a…

Comment by plawansai July 1 permalink
Amazon Web Services (AWS)
ติดตั้งใช้ Instance Run Web Server ใน Subnet ใน VPC เมื่อพยายามเชื่อมต่อ Instance ผ่าน Browser โดยใช้ HTTP ทาง Internet พบว่า Connection Timeout สามารถตรวจสอบได้โดย: ตรวจสอบว่า VPC มี Internet Gateway และ Default Route 0.0.0.0/0 ชี้ไปหา Internet Ga…

Comment by plawansai June 26 permalink
Amazon Web Services (AWS)
ฐานข้อมูล MySQL, MariaDB, PostgreSQL, Oracle, SQL Server, และ Aurora ของ Amazon Relational Database Service (Amazon RDS) รองรับ Read Replica. Amazon DynamoDB เหมาะที่สุดสำหรับฐานข้อมูลที่ไม่สัมพันธ์ สถานะ Session, ตะกร้าสินค้า, และ Catalog สินค้า…

Comment by plawansai June 20 permalink
IP Multicast Technology and VXLAN - EVPN The Evolution of Overlay Networking
Lab: https://support.cloudmylab.com/.../vxlan-lab-on-eve-ng Spine = Fabric, Leaf = Line Card (LC) https://ithitman.blogspot.com/2018/05/configuring-otv-otv-configuration-and.html B-)

Comment by plawansai June 18 permalink
Amazon Web Services (AWS)
Database กำลัง Run อยู่บน EC2 instance, Software มีการ Backup ข้อมูลที่ต้องใช้ Block Storage,EBS Cold HDD Volume มีต้นทุนน้อยที่สุด Amazon Simple Queue Service และ Elastic Load Balancing ช่วยอำนวยความสะดวกในการใช้งานสถาปัตยกรรมที่มีความเป็นอิสระต่…

Comment by plawansai June 14 permalink
Amazon Web Services (AWS)
Versioning:Can version files in Amazon S3It is enabled at the bucket levelSame key overwrite will increment the 'version': 1, 2, 3....It is best practice to version buckets: Protect against unintended deletes (ability to restore a version…

Comment by plawansai June 13 permalink
Amazon Web Services (AWS)
Have an ASG that scales on demand based on the traffic going to new website: Triangle.Com. Would like to optimize for cost, so have selected an ASG that scales based on demand going through ELB. Still, want solution to be highly available so have s…

Comment by plawansai June 7 permalink
Amazon Web Services (AWS)
Stateful Web App: WordPress.com:Trying to create a fully scable WordPress websiteWant that website to access and correctly display picture uploadsUser data, and the blog content should be stored in a MySQL database. Use 5. architecture of Clothes.c…

Comment by plawansai June 5 permalink
Amazon Web Services (AWS)
Have purchased 'coolcompany.com' on the AWS registrar and would like for it to point to lb1-1234.ap-southeast-1.elb.amazonaws.com. Alias sort of Route 53 record is POSSIBLE to set up for this. The DNS protocol does not allow to create a C…

Comment by plawansai June 3 permalink
Amazon Web Services (AWS)
Weighted Routing Policy:Control the % of the requests that go to specific endpointHelpful to test 1% of traffic on new app version for exampleHelpful to split traffic between two regionsCan be associated with Health Checks Latency:Redirect to the s…

Comment by plawansai May 30 permalink
Amazon Web Services (AWS)
EC2 User Data:It is possible to bootstrap our instances using an EC2 User data script.bootstrapping means launching commands when a machine startsThat script is only run once at the instance first startEC2 user data is used to automate boot tasks s…

Comment by plawansai May 29 permalink
Amazon Web Services (AWS)
AWS Cost Optimization: How We Saved Over $1,000 By Building CloudForecast With Serverless And AWS Lambda: https://www.cloudforecast.io/blog/how-we-saved-money-using-aws-serverless-lambda http://awscostlabs.com How many instances could right-size?W…

Comment by plawansai May 23 permalink
Amazon Web Services (AWS)
Amazon ElastiCache Overview:The same way RDS is to get managed Relational Databases...Is to get managed Redis or MemcachedCaches are in-memory databases with really high performance, low latencyHelps reduce load off of databases for read intensive …

Comment by plawansai May 22 permalink
Amazon Web Services (AWS)
Amazon Aurora:Is a proprietary technology from AWS (not open sourced)Postgres and MySQL are both supported as Aurora DB (that means drivers will work as if Aurora was a Postgres or MySQL database)Is 'AWS cloud optimized' and claims 5x per…

Comment by plawansai May 22 permalink
Amazon Web Services (AWS)
AWS Cost Calculator Overview: Pricing Philosophy - High volume / low margin businesses are in core DNA:Trade CapEx for variable expense: Pay for what useEconomies of scale provide with lower costs: 80 price reductions since 2006Pricing model choice…

Comment by plawansai May 21 permalink
Amazon Web Services (AWS)
RDS Backups:Backups are automatically enabled in RDSAutomated backups: Daily full backup of the database (during the maintenance window)Transaction logs are backed-up by RDS every 5 minutes=> ability to restore to any point in time (from oldest …

Comment by plawansai May 16 permalink
Amazon Web Services (AWS)
Elastic File System:Mounting 100s of instances across AZEFS share website files (WordPress)Only for Linux Instances (POSIX) EFS has a higher price point than EBSCan leverage EFS-IA for cost savings Instance in us-east-1a just got terminated, and t…

Comment by plawansai May 15 permalink
Amazon Web Services (AWS)
EBS Encryption:When create an encrypted EBS volume, get the following: Data at rest is encrypted inside the volumeAll the data in flight moving between the instance and the volume is encryptedAll snapshots are encryptedAll volumes created from the …

Comment by plawansai May 13 permalink
Amazon Web Services (AWS)
EBS Snapshots:Make a backup (snapshot) of EBS volume at a point in timeNot necessary to detach volume to do snapshot, but recommendedCan copy snapshots across AZ or Region AMI Overview:AMI = Amazon Machine ImageAMI are a customization of an EC2 ins…

Comment by plawansai May 8 permalink
Network & Cyber Security
Most modern malware uses some form of obfuscation to avoid detection as there is a range of obfuscation techniques and there are tools freely available on the Internet for a malware author to use. Polymorphism can be used to defeat detection method…

Comment by plawansai May 7 permalink
Amazon Web Services (AWS)
EC2 Nitro:Underlying Platform for the next generation of EC2 instancesNew virtualization technologyAllows for better performance: Better networking options (enhanced networking, HPC, IPv6)Higher Speed EBS (Nitro is necessary for 64,000 EBS IOPS - m…

Comment by plawansai May 3 permalink
Amazon Web Services (AWS)
EC2 instance types/families: General Purpose: Great for a diversity of workloads such as web servers or code repositoriesBalance between Compute, Memory, and NetworkingMac, T4g, T3, T3a, T2, M6g, M5, M5a, M5n, M5zn, M4, and A1 Compute Optimized: G…

Comment by plawansai May 2 permalink
Amazon Web Services (AWS)
IAM Users: Can belong to multiple groupsDon't have to belong to a groupCan have policies assigned to themAccess AWS using a username and a password Don't use the root user account is an IAM best practice. Only want to use the root accoun…

Comment by plawansai April 27 permalink
Amazon Web Services (AWS)
Multi Factor Authentication - MFA:Users have access to account and can possibly change configurations or delete resources in AWS accountWant to protect Root Accounts and IAM usersMFA = password know + security device ownAlice > Password + MFA =&…

Comment by plawansai April 25 permalink
Amazon Web Services (AWS)
5 เคล็ดลับ ใช้งาน AWS อย่างคุ้มค่าสูงสุด ปกป้องข้อมูลได้ทุกส่วน: dl.techtalkthai.com/ttt_veeam_aws_cloud_cost_optimization_2021_whitepaper_01 v1.1.pdf AWS Cloud History:2002: Internally launched2003: Amazon infrastructure is one of their core stre…

Comment by plawansai April 21 permalink
Amazon Web Services (AWS)
An ASG spawns across 2 availability zones. AZ-A has 3 EC2 instances and AZ-B has 4 EC2 instances. The ASG is about to go into a scale-in event. The AZ-B will terminate the instance with the oldest launch configuration. The Default Termination Polic…

Comment by plawansai April 17 permalink

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