Elastic Compute Service:Migration process

Perform the following steps to migrate business software from an x86 platform to a YiTian ECS instance:

1. Create a YiTian ECS instance.

   For more information, see Create an instance by using the wizard. Take note of the parameters described in the following table.

   Parameter	Description
   Instance Type	g8y (recommended) c8y r8y
   Image	Alibaba Cloud Linux Alibaba Cloud Linux 3.2104 LTS 64-bit for ARM (recommended) Alibaba Cloud Linux 3.2104 LTS 64-bit for ARM (Level 3 of MLPS 2.0) Anolis OS Anolis 8.8 RHCK 64-bit for ARM Anolis 8.8 ANCK 64-bit for ARM (Level 3 of MLPS 2.0) Anolis 8.8 ANCK 64-bit for ARM Anolis 8.6 RHCK 64-bit for ARM Anolis 8.6 ANCK 64-bit for ARM Anolis 8.4 RHCK 64-bit for ARM Anolis 8.4 ANCK 64-bit for ARM Anolis 7.9 RHCK 64-bit for ARM Anolis 7.9 ANCK 64-bit for ARM Ubuntu Ubuntu 22.04 64-bit for ARM Ubuntu 20.04 64-bit for ARM Ubuntu 18.04 64-bit for ARM CentOS 7.9 64-bit for ARM Note CentOS 7 is scheduled to reach end of life (EOL) on June 30, 2024. We recommend that you do not use CentOS 7. Debian Debian 11.5 64-bit for ARM Debian 11.2 64-bit for ARM Debian 10.13 64-bit for ARM Note Debian 10.13 reached EOL. We recommend that you do not use Debian 10.13.

2. Migrate software.

   In-house software and open-source software can be migrated. For more information, see Migrate source code and Migrate open source software.

   We recommend that you use the compilers, runtime libraries, and applications that are described in the following table.

   Category	Software	Recommended version	Description
   Compilers	GCC	gcc 10.2.1	We recommend that you use gcc 10 or later to improve performance.
   	LLVM	LLVM 13/clang 13	When you use clang 13, the GNU C Library (glibc) version must be 2.17 or later. When you use clang 13, the C++ runtime library that is used must be libstdc++. When you install GCC, the libstdc++ runtime library is also installed. We recommend that you use the libstdc++ runtime library that is installed together with GCC 7 or later, or GCC 10 or later. The clang 13 version depends on the LLVM 13 version and gcc-c++ RPM packages.
   	Glibc	glibc 2.32	None.
   	JDK	Dragonwell 11 or OpenJDK 11	We recommend that you use Dragonwell for better performance and support.
   	Golang	go 1.18+	SDK for Go is optimized for ARM architectures. We recommend that you use the following versions: Go 1.16. The performance of ARM atomic operations and data copying operations is optimized. Go 1.18. Parameters are passed in by using registers instead of stacks. This version provides a 10% performance improvement for ARM architectures.
   	Python	3.8	Python 2.7 reached EOL on January 1, 2020. Python 3.6 is scheduled to reach EOL on December 23, 2022. We recommend that you use Python 3.7 or later.
   	PHP	7.4+	Supported by the community.
   Containers	K8s	K8s 1.22 Containerd 1.5.0+	Supported by the community.
   Web applications	Nginx	The version that comes with the recommended operating system	Maintained and supported by the operating system provider.
   	httpd	The version that comes with the recommended operating system	Maintained and supported by the operating system provider.
   	NodeJS	The version that comes with the recommended operating system	Maintained and supported by the operating system provider.
   Databases	MySQL	The version that comes with the recommended operating system	Maintained and supported by the operating system provider.
   	Redis	The version that comes with the recommended operating system	Maintained and supported by the operating system provider.
   Big data	Hadoop	Hadoop 3.3.1	Supported by the community.
   	Spark	Spark 3.2	Supported by the community.
   	Hive	Hive 3.1	Supported by the community.
   	ElasticSearch	ES 7.12	Supported by the community.
   Others	Gromacs	new version	Supported by the community.
   	BWA	new version	Supported by the community.
   	Gatk	4.3.0.0	Supported by the community.

3. Compile the software after the migration is completed.

   Compile and build the software based on your business requirements.