2017年10月29日星期日
2017年10月16日星期一
Online game on the server requirements
streaming media server
Relative to the single-player game or other local area network (LAN), a large network game the client is no longer to logical processing of data, most of the logic calculation on the backend server for processing, lead to the player and the data transmission between the backend server frequency is much and mostly keep long link, the server response speed, concurrent ability, link stability performance is directly determines the client player's user experience. As a result, the game server selection and architectural construction and to the Web server, game server taller to the requirement of the hardware and the whole system architecture.
1,Quick response;
As a result of the online game server cluster corresponding to all the game client, each player's actions in real-time influence each other. PK between players, for example, in receives the players command, the server need to immediately determine both weapons, hit points, armor and resistance properties, and then pass through a certain algorithm to final output a damage. And these all need server in real-time operation and make feedback, need in millisecond delay. Therefore, the logic of online game server needs strong computing ability, or adopt high-performance servers, or through the ascension of the whole system server cluster computing ability.
2,，High concurrency
For a popular online game, high concurrency ability test is a difficult problem on the server. The player's in-game frequents large-scale landing and at the same time, the group chat will need high concurrent processing link. To the IM server, for example, when a player in the game issued a message that goal is the whole map all players, so this message may need to be sent to the tens of thousands of players at the same time, the news released and this is just a player, if it's 10, 100 or 10000 players at the same time send the radio? So, a same hardware configuration of the server, may run Nginx (concurrent) for dealing with the Web server can handle thousands of links at the same time, but for a game server is only 1, 2000. For the login and management server, therefore, can support high concurrency basis is an important consideration.
3，A large amount of data
A large online games on the server side need to store a large amount of data, such as the game map data, resource data, the basic data of won't have too big change. In addition, the player to create a game each character will have a series of data to be stored, such as the name, ID, equipment, pet, attributes, and so on, and whether or not the player whether online, long time not logged in, the relevant data needs to be permanent. Online storage server, therefore, need to larger, safe storage space to store the data.
Relative to the single-player game or other local area network (LAN), a large network game the client is no longer to logical processing of data, most of the logic calculation on the backend server for processing, lead to the player and the data transmission between the backend server frequency is much and mostly keep long link, the server response speed, concurrent ability, link stability performance is directly determines the client player's user experience. As a result, the game server selection and architectural construction and to the Web server, game server taller to the requirement of the hardware and the whole system architecture.
1,Quick response;
As a result of the online game server cluster corresponding to all the game client, each player's actions in real-time influence each other. PK between players, for example, in receives the players command, the server need to immediately determine both weapons, hit points, armor and resistance properties, and then pass through a certain algorithm to final output a damage. And these all need server in real-time operation and make feedback, need in millisecond delay. Therefore, the logic of online game server needs strong computing ability, or adopt high-performance servers, or through the ascension of the whole system server cluster computing ability.
2,，High concurrency
For a popular online game, high concurrency ability test is a difficult problem on the server. The player's in-game frequents large-scale landing and at the same time, the group chat will need high concurrent processing link. To the IM server, for example, when a player in the game issued a message that goal is the whole map all players, so this message may need to be sent to the tens of thousands of players at the same time, the news released and this is just a player, if it's 10, 100 or 10000 players at the same time send the radio? So, a same hardware configuration of the server, may run Nginx (concurrent) for dealing with the Web server can handle thousands of links at the same time, but for a game server is only 1, 2000. For the login and management server, therefore, can support high concurrency basis is an important consideration.
3，A large amount of data
A large online games on the server side need to store a large amount of data, such as the game map data, resource data, the basic data of won't have too big change. In addition, the player to create a game each character will have a series of data to be stored, such as the name, ID, equipment, pet, attributes, and so on, and whether or not the player whether online, long time not logged in, the relevant data needs to be permanent. Online storage server, therefore, need to larger, safe storage space to store the data.
VPS Server Hosting Is Synonymous With Higher Performance And No Downtime
streaming media server
If you are looking for a web hosting plan that ensures to enhance the performance of your server at a fraction of the price, then you should opt for a VPS server hosting. With VPS server, you can get the leverage to take full control over your server along with maintaining privacy of your mission-critical applications with ease. It is a revolutionary solution that has created storm in the web hosting industry. However, the VPS server is shared and as a result, the cost of its deployment is substantially lower despite offering the same level of privacy as that of the dedicated server.
In VPS web hosting, the server is partitioned into multiple sub-servers, which have their own RAM, processor, bandwidth and storage space. Each user is allocated with a small server to run and manage mission-critical applications at a substantially lower price. Your job is to choose a reliable service provider so that you can experience a good level of performance as far as the server is concerned. Besides, this web hosting solution is best fit for those businesses that ignore shared servers in order for maintaining privacy, but they can’t afford the dedicated hosting because it is too expensive.
For small and medium-sized businesses, the VPS server hosting is very precise. This is because it leverages you to take full control of your server, thereby allowing you to concentrate on your core competencies. However, entrepreneurs of large organizations have their own well-equipped data centers for overall server management and as a result; they are ensured with the security of the data and improvement in the performance of web-based applications.
For those who don’t know, VPS server is attributed with the ability to work under two main platforms: Linux and Windows. Linux-based web hosting uses the Linux open-source software, eliminating the need for buying licenses for installing and running software. However, the specifications of Windows VPS server are exactly the reverse of the former and as a result, it is relatively expensive. Though differences exist between the two, but both are significant so far as online business is concerned. It is however recommended you to consider the features of a server as well as your business objectives prior choosing between Linux and Windows VPS web hosting solutions. This is because an apt web server hosting is crucial for the success of a business.
If you are looking for a web hosting plan that ensures to enhance the performance of your server at a fraction of the price, then you should opt for a VPS server hosting. With VPS server, you can get the leverage to take full control over your server along with maintaining privacy of your mission-critical applications with ease. It is a revolutionary solution that has created storm in the web hosting industry. However, the VPS server is shared and as a result, the cost of its deployment is substantially lower despite offering the same level of privacy as that of the dedicated server.
In VPS web hosting, the server is partitioned into multiple sub-servers, which have their own RAM, processor, bandwidth and storage space. Each user is allocated with a small server to run and manage mission-critical applications at a substantially lower price. Your job is to choose a reliable service provider so that you can experience a good level of performance as far as the server is concerned. Besides, this web hosting solution is best fit for those businesses that ignore shared servers in order for maintaining privacy, but they can’t afford the dedicated hosting because it is too expensive.
For small and medium-sized businesses, the VPS server hosting is very precise. This is because it leverages you to take full control of your server, thereby allowing you to concentrate on your core competencies. However, entrepreneurs of large organizations have their own well-equipped data centers for overall server management and as a result; they are ensured with the security of the data and improvement in the performance of web-based applications.
For those who don’t know, VPS server is attributed with the ability to work under two main platforms: Linux and Windows. Linux-based web hosting uses the Linux open-source software, eliminating the need for buying licenses for installing and running software. However, the specifications of Windows VPS server are exactly the reverse of the former and as a result, it is relatively expensive. Though differences exist between the two, but both are significant so far as online business is concerned. It is however recommended you to consider the features of a server as well as your business objectives prior choosing between Linux and Windows VPS web hosting solutions. This is because an apt web server hosting is crucial for the success of a business.
Customer Guidance for WannaCrypt attacks FROM [MSRC Team]
streaming media server
Microsoft solution available to protect additional products
Today many of our customers around the world and the critical systems they depend on were victims of malicious “WannaCrypt” software. Seeing businesses and individuals affected by cyberattacks, such as the ones reported today, was painful. Microsoft worked throughout the day to ensure we understood the attack and were taking all possible actions to protect our customers. This blog spells out the steps every individual and business should take to stay protected. Additionally, we are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003. Customers running Windows 10 were not targeted by the attack today.
Details are below.
In March, we released a security update which addresses the vulnerability that these attacks are exploiting. Those who have Windows Update enabled are protected against attacks on this vulnerability. For those organizations who have not yet applied the security update, we suggest you immediately deploy Microsoft Security Bulletin MS17-010.
For customers using Windows Defender, we released an update earlier today which detects this threat as Ransom:Win32/WannaCrypt. As an additional “defense-in-depth” measure, keep up-to-date anti-malware software installed on your machines. Customers running anti-malware software from any number of security companies can confirm with their provider, that they are protected.
This attack type may evolve over time, so any additional defense-in-depth strategies will provide additional protections. (For example, to further protect against SMBv1 attacks, customers should consider blocking legacy protocols on their networks).
We also know that some of our customers are running versions of Windows that no longer receive mainstream support. That means those customers will not have received the above mentioned Security Update released in March. Given the potential impact to customers and their businesses, we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download (see links below).
This decision was made based on an assessment of this situation, with the principle of protecting our customer ecosystem overall, firmly in mind.
Some of the observed attacks use common phishing tactics including malicious attachments. Customers should use vigilance when opening documents from untrusted or unknown sources. For Office 365 customers we are continually monitoring and updating to protect against these kinds of threats including Ransom:Win32/WannaCrypt. More information on the malware itself is available from the Microsoft Malware Protection Center on the Windows Security blog. For those new to the Microsoft Malware Protection Center, this is a technical discussion focused on providing the IT Security Professional with information to help further protect systems.
We are working with customers to provide additional assistance as this situation evolves, and will update this blog with details as appropriate.
Phillip Misner, Principal Security Group Manager Microsoft Security Response Center
Further resources:
Download security updates for: Windows Server 2003 SP2 x64, Windows Server 2003 SP2 x86, Windows XP SP2 x64, Windows XP SP3 x86, Windows XP Embedded SP3 x86, Windows 8 x86, Windows 8 x64
General information on ransomware: https://www.microsoft.com/en-us/security/portal/mmpc/shared/ransomware.aspx
MS17-010 Security Update: https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
Tags cyberattacks Microsoft Windows ransomware Security Update Windows
Microsoft solution available to protect additional products
Today many of our customers around the world and the critical systems they depend on were victims of malicious “WannaCrypt” software. Seeing businesses and individuals affected by cyberattacks, such as the ones reported today, was painful. Microsoft worked throughout the day to ensure we understood the attack and were taking all possible actions to protect our customers. This blog spells out the steps every individual and business should take to stay protected. Additionally, we are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003. Customers running Windows 10 were not targeted by the attack today.
Details are below.
In March, we released a security update which addresses the vulnerability that these attacks are exploiting. Those who have Windows Update enabled are protected against attacks on this vulnerability. For those organizations who have not yet applied the security update, we suggest you immediately deploy Microsoft Security Bulletin MS17-010.
For customers using Windows Defender, we released an update earlier today which detects this threat as Ransom:Win32/WannaCrypt. As an additional “defense-in-depth” measure, keep up-to-date anti-malware software installed on your machines. Customers running anti-malware software from any number of security companies can confirm with their provider, that they are protected.
This attack type may evolve over time, so any additional defense-in-depth strategies will provide additional protections. (For example, to further protect against SMBv1 attacks, customers should consider blocking legacy protocols on their networks).
We also know that some of our customers are running versions of Windows that no longer receive mainstream support. That means those customers will not have received the above mentioned Security Update released in March. Given the potential impact to customers and their businesses, we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download (see links below).
This decision was made based on an assessment of this situation, with the principle of protecting our customer ecosystem overall, firmly in mind.
Some of the observed attacks use common phishing tactics including malicious attachments. Customers should use vigilance when opening documents from untrusted or unknown sources. For Office 365 customers we are continually monitoring and updating to protect against these kinds of threats including Ransom:Win32/WannaCrypt. More information on the malware itself is available from the Microsoft Malware Protection Center on the Windows Security blog. For those new to the Microsoft Malware Protection Center, this is a technical discussion focused on providing the IT Security Professional with information to help further protect systems.
We are working with customers to provide additional assistance as this situation evolves, and will update this blog with details as appropriate.
Phillip Misner, Principal Security Group Manager Microsoft Security Response Center
Further resources:
Download security updates for: Windows Server 2003 SP2 x64, Windows Server 2003 SP2 x86, Windows XP SP2 x64, Windows XP SP3 x86, Windows XP Embedded SP3 x86, Windows 8 x86, Windows 8 x64
General information on ransomware: https://www.microsoft.com/en-us/security/portal/mmpc/shared/ransomware.aspx
MS17-010 Security Update: https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
Tags cyberattacks Microsoft Windows ransomware Security Update Windows
Linux is more than 2T disk using GPT partition methods to share
streaming media server
In Linux, we can convert the disk that is greater than 2TB capacity to the GPT format. As a result of GPT format disk is equivalent to the original MBR disk in the original reserves the 4 partition table 4* 16 bytes only the first 16 bytes, other similar to the extended partition, real partition table after 512 bytes, so for GPT disk table there is no limit to the four primary partitions.
For the GPT disk partition table, we are going to use the powerful parted command.
Example: the usual parted command
# parted /dev/sdb
GNU Parted 1.8.1
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
Format the MBR disk to GPT
(parted) mkpart primary 0 100
Partitions a primary partition with a starting position of 0, with a size of 100M
(parted) mkpart primary 100 200
Partitions a primary partition with an initial location of 100 megabytes
(parted) mkpart primary 0 -1
Partitions all space to one partition
(parted) print
Print current partition
(parted) quit
Some of the commands that might be used
(parted) mklable msdos
If you want to reverse, convert the GPT disk to the MBR disk
After you've partitioned the partitions, you'll also use mkfs.ext3 to format
#partprobe
#mkfs.ext3 -F /dev/sdb1
Practice
Take redhat 7 for example
parted /dev/sdb mklabel gpt;
Convert to GPT.
parted /dev/sdb mkpart primary 0 6000GB Create a partition for 1T.
mkfs -t ext3 /dev/sdb1
mkdir –p /www
mount /dev/sdb1 /www
This is where a large disk partition SDB is mounted on the Linux system's WWW directory.
Boot up your own dynamic mount
vi /etc/fstab
/dev/sdb1 /mnt/b auto defaults 0 0
In Linux, we can convert the disk that is greater than 2TB capacity to the GPT format. As a result of GPT format disk is equivalent to the original MBR disk in the original reserves the 4 partition table 4* 16 bytes only the first 16 bytes, other similar to the extended partition, real partition table after 512 bytes, so for GPT disk table there is no limit to the four primary partitions.
For the GPT disk partition table, we are going to use the powerful parted command.
Example: the usual parted command
# parted /dev/sdb
GNU Parted 1.8.1
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
Format the MBR disk to GPT
(parted) mkpart primary 0 100
Partitions a primary partition with a starting position of 0, with a size of 100M
(parted) mkpart primary 100 200
Partitions a primary partition with an initial location of 100 megabytes
(parted) mkpart primary 0 -1
Partitions all space to one partition
(parted) print
Print current partition
(parted) quit
Some of the commands that might be used
(parted) mklable msdos
If you want to reverse, convert the GPT disk to the MBR disk
After you've partitioned the partitions, you'll also use mkfs.ext3 to format
#partprobe
#mkfs.ext3 -F /dev/sdb1
Practice
Take redhat 7 for example
parted /dev/sdb mklabel gpt;
Convert to GPT.
parted /dev/sdb mkpart primary 0 6000GB Create a partition for 1T.
mkfs -t ext3 /dev/sdb1
mkdir –p /www
mount /dev/sdb1 /www
This is where a large disk partition SDB is mounted on the Linux system's WWW directory.
Boot up your own dynamic mount
vi /etc/fstab
/dev/sdb1 /mnt/b auto defaults 0 0
2017年9月7日星期四
Poisoning caused SSH service run exception, the following error：fatal: mm_request_send: write: Broken pipe
DEDICATED SERVER
US DEDICATED SERVERS
The article's configuration and instructions have been tested in the CentOS 6.5 64-bit operating system. Other types and versions of the operating system configuration may vary, the specific circumstances, please refer to the appropriate operating system official documents.
Problem Description
Connect to the cloud server ECS （Elastic Compute Server） Linux server, the command line or the secure log appears with an error message similar to the following:
fatal: mm_request_send: write: Broken pipe.
Connection closed by 192.168.0.1.
Problem causes：The problem may be due to udev-fall and other viruses affect the normal operation of the SSH service.
Approach：To solve this problem, it is recommended that you deal with the following:
Temporary recovery - Reliable approach - temporary recovery
To udev-fall virus, for example, you can try the following way, the temporary resumption of the normal operation of SSH services:
Through the management terminal into the system.
Use the following command to query the virus process:
ps aux | grep udev-fall
root 24486 0.0 0.0 108340 1848 pts/0 S 10:30 0:00 /usr/bin/udev-fall
Description: The number in the second column indicates the process ID (PID).
Use the following command to end the virus process: kill -9 <process corresponds to PID>
Such as:
kill -9 24486
Use the following command to cancel the automatic operation of the virus service:
chkconfig udev-fall off
Use the following command to remove virus program-related instructions and self-starting configuration:
rm -rf /usr/bin/udev-fall
rm -rf /etc/init.d/udev-fall
Use the following command to restart the SSH service and then try to reconnect from the client:
service sshd restart
Reliable approach
Because it can not clear the virus or malicious intruders, whether the system has done other tampering, or hide other virus files. Therefore, for the long-term stability of the server to run, it is recommended by rolling back the system disk historical snapshot of the way, to restore the server to the normal state.
The cloud server ECS CentOS 7 restarts the sshd service operation method
DEDICATED SERVER
US DEDICATED SERVERS
In the cloud server ECS Linux CentOS 7 restart service is no longer through the service operation, but through the systemctl operation.
The operating instructions are as follows:
1. Check whether the sshd service starts:
systemctl status sshd.service
2. If you do not start, you need to start the service:
systemctl start sshd.service
3. Restart the sshd service:
systemctl restart sshd.service
4. Set the service to open from:
systemctl enable sshd.service
2017年7月23日星期日
US dedicated servers in VPB.com
 |
| vpb.com dedicated server |
DEDICATED SERVERS
US dedicated server
announceda complete refresh of its midrange and high-end SPARC server lines with new SPARC T5 and M5 servers running Solaris. Building on the SPARC T4 platform, the new servers complete Oracl;s SPARC family, spanning entry-level, mid-range and high-end.
The SPARC M5-32 server is designed for large, complex workloads and features massive I/O and memory capacity. It is 10 times faster than previous generations and offers superior hardware domaining and RAS capabilities. The new servers expand Oracle’s SPARC portfolio and enable near linear scalability from 1 to 32 sockets, with one common core, one operating system, and one common set of systems management and virtualization tools, making them ideal platforms for building clouds.
The new T5 servers have set 17 world records in TPCTransaction Processing Performance Counciland SPEC tests, according to Oracle. A SPARC T5-8 server equipped with eight 3.6 GHz SPARC T5 processors achieved a world record C for a single system on the TPC-C benchmark. Oracle demonstrated this world record database performance running Oracle Database 11g Release 2 Enterprise Edition with Oracle Partitioning.Note: IBM is ;s benchmarking claims.
;Oracle has refreshed its SPARC family with the world’s fastest processor and launched the world’s fastest single server for Database, Java and multi-tier applications, said John Fowler, executive vice president, Systems, Oracle. ;The new SPARC T5 and M5 systems leapfrog the competition with up to 10x the performance of the previous generation, offering an unbeatable value for midrange and high-end enterprise computing.
Oracle also announced two new Oracle Optimized Solutions that exploit the performance, reliability and value of SPARC T5 servers, Oracle storage, Oracle Database and Oracle Middleware. These include Oracle Optimized Solution for Oracle Database, and Oracle Optimized Solution for WebLogic Server.
“SAS Business Analytics enables faster, more accurate data-driven decisions. Implementing SAS Business Analytics on SPARC servers with Oracle Solaris solves critical business issues in transformational ways. SPARC and Oracle Solaris have long been a proven platform for SAS applications, said Craig Rubendall, Senior Director of Research and Development at SAS. ;;ve seen in-house that the technically advanced features and design of the SPARC M5 servers along with processor and throughput enhancements provide a very well-suited platform for enterprise class SAS application deployments.
John Rath is a veteran IT professional and regular contributor at Data Center Knowledge. He has served many roles in the data center, including support, system administration, web development and facility management.
what is fully managed Web servers?
 |
| fully managed web servers in VPB |
WEB SERVERS
FULLY MANAGED DEDICADTED SERVERS
Is there such a thing as fully automated managed hosting? ;Managed hosting usually means a provider is managing servers for a customer, providing advanced features like security, monitoring, load balancing and backup management.
StrataScale Inc. says it has automated many of these features in , a new service powered by an online provisioning system. IronScale differs from many recent cloud hosting offerings in that each customer gets their own server, rather than resources running atop a virtualized platform. It;s essentially a dedicated server with a supercharged control panel that adds managed hosting features.
StrataScale is a subsidiary of Enterprise Solutions, a Sacramento-based colocation and managed hosting specialist. RagingWire sees opportunity in managed hosting, and its market analysis found enterprises want on-demand provisioning, but don;t want to share resources. ;We sat down and said ;let;s build a better mousetrap, said Doug Adams, the vice president of sales and marketing for StrataScale.
IronScale offers the benefits of both physical and virtual infrastructures, automating the provisioning and management of servers, security, storage, and networks. IronScale lets users dynamically increase capacity or storage, along with many featurestypically associated with fully managed hosting.
;This is not a virtualized grid, said Adams. ;It;s a physical server. We offer a layer of control that no one else offers. We think it;s a game changer.
IronScale “delivers the security and reliability of a dedicated physical infrastructure with the flexibility and ease of a virtual environment,” said Yatish Mishra, president of StrataScale. “For businesses looking to streamline their managed server environments and achieve greater efficiencies and a strong competitive advantage, IronScale is the ideal choice.”
IronScale offers three levels of servers on ;enterprise-class hardware.
Customers can add and upgrade servers through the online management system. load balancing and auto-failover to a backup servers are available as optional features for an additional fee.
IronScale says that its team of 30 developers is continuing to enhance the offering, with more features to come – including virtualization. ;;re not virtualization bigots, said Adams. ;We offer virtualization, and will eventually offer it with this product.
Rich Miller is the founder and editor at large of Data Center Knowledge, and has been reporting on the data center sector since 2000. He has tracked the growing impact of high-density computing on the power and cooling of data centers, and the resulting push for improved energy efficiency in these facilities.
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