What you need to know to use Aliyun

information on the use of ECS

In order to ensure the normal operation of your cloud server ECS instance, you must carefully read the following considerations before using it.

Information on cloud Server operations

Taboo

Users are prohibited from using ECS instances to do traffic penetration services. The offender is the highest penalty for shutting down and locking the instance, and repaying processing.

Do not randomly upgrade the kernel and operating system versions of the cloud server.

Do not open SELinux.

Do not uninstall Pvdriver.

Do not modify the NIC MAC address at will.

Suggestions

For cloud servers with more than 4G of memory, select 64-bit operating systems (32-bit operating systems have 4G memory addressing restrictions), such as:

CentOS 6.2 64-bit

Debian 6.0 64-bit

Ubuntu 10.10 64-bit

Windows 2008 64-bit

Aliyun Linux 5.4 64-bit

The Windows 32-bit operating system supports a maximum CPU core of 4 cores.

The cloud server supports changes to the CPU, memory (need to stop the cloud server before operation upgrades, IP information does not make changes, no migration data) and bandwidth upgrades (seamless upgrades, no downtime, can be selected by day).

In order to ensure the continuity of the service, to avoid the service caused by the downtime migration is not available, it is recommended to set up the relevant software to boot. If you have a database that has an application service connection, you need to set up an automatic reconnection mechanism in your program.

Limit

Virtualization software Installation and further virtualization (such as the installation of VMware) are temporarily not supported.

Temporarily does not support the sound card application, the direct loading external hardware equipment (for example hardware encryption dog, U disk, external hard disk, bank U key, etc.).

Adding hardware encryption Dog peripherals is not supported. You can try soft encryption dog or dynamic password two times authentication, etc.

Temporarily do not support IP packet address translation services such as SNAT. You can use your own VPN or proxy method to implement.

Multicast protocol is not supported for the temporary. If you need to use multicast, it is recommended that you use unicast point-to-point mode instead.

The simple log Service,sls currently supports only 32-bit Linux cloud servers in Project territory (East China 1 (Hangzhou)/North China 1 (Qingdao)).

Windows Operating System Notice

Do not turn off the shutdownmon.exe process that the Windows system has brought itself. Shutting down may cause the server to restart longer.

Do not rename, delete, or disable the Administrator account under Windows to avoid affecting server usage.

Use of virtual memory is not recommended.

The console modification password is for the Administrator account number. If the administrator account is deleted or renamed, clicking the Modify Password button automatically creates the Administrator account.

Windows System modified computer name be sure to synchronize the following related health values in the registry, otherwise the modifications will not succeed, causing some third-party programs to fail to install. The health values that need to be modified in the registry are as follows:

Hkey_local_machinesystemcontrolset001controlcomputernameactivecomputername

Hkey_local_machinesystemcurrentcontrolsetcontrolcomputernamecomputername

Linux Operating System Notice

Do not modify the default/etc/issue file contents under the Linux server. Modifying this file will result in the function buttons of the admin console not working properly.

Do not arbitrarily change or partition under the directory permissions, especially/etc/sbin/bin/boot/dev/usr/lib directory permissions. If the permissions change improperly, the system will be abnormally.

Do not rename, delete, or disable the root account under Linux.

Do not compile the kernel of the Linux system, or do anything else with the kernel.

It is not recommended to use the swap partition.

Do not open the NetworkManager service. The service conflicts with the system's internal network service, resulting in network exceptions.

Pay attention by volume

Before using the amount of charge, you need to make a real name certification, and ensure that the account balance at least 100 yuan (not vouchers).

"Package year Monthly" and "Pay by volume" are not supported to replace each other. 1 cloud servers can only choose 1 payment modes and cannot be selected at the same time.

No filing service is provided.

No support 5 days for no reason refund.

The replacement operating system is supported by volume, but does not support configuration changes (including bandwidth upgrades, CPU and memory upgrades, new data disks), and if 0M fixed bandwidth is selected, no extranet IP is allocated or 0M bandwidth upgrades are not supported.

Total charge per hour = CPU Cost + memory Cost + data disk Cost + public network bandwidth cost. CPU, memory, data disk, fixed bandwidth are charged by the hour.

Bandwidth according to the use of flowmeter charges, only one-way charge outflow flow costs (0.8 yuan/GB), flow free. For example, if you have 1 hours of public network outflow of 2.5 GB, the charge is 2.5 GB * 0.8 yuan/hour = 2.0 yuan.