Configuring Application Acceleration for a FlexusX Instance

Scenarios

On FlexusX instances created using the Huawei Cloud EulerOS 2.0 image, certain applications can run at the optimal speed at peak performance thanks to the optimization of the vCPUs, memory, network, storage, kernel, applications, and other settings. Typical applications, such as Nginx, Redis, MySQL, PostgreSQL, and Memcached, can run 10% faster.

When you purchase a FlexusX instance, you need to select the Huawei Cloud EulerOS 2.0 image and then choose an application to be accelerated: Nginx, Redis, MySQL, PostgreSQL, or Memcached. Then the Huawei Cloud EulerOS 2.0 image will pre-install the optimized version of Nginx, Redis, MySQL, PostgreSQL, or Memcached to provide you with the optimal performance. For details about the performance benefits, see Table 1.

**Table 1** Performance benefits
Application	Default Version	Test Tool	Performance Benefit	Description
Nginx	1.21.5	wrk	40% (small HTTP/HTTPS packets) 15% (large packets)	The enhanced performance results from optimization at the application and OS layers.
MySQL	8.0.42	sysbench	50% (OLTP read-only, write-only, and mixed read/write)
Redis	6.2.20	memtier-benchmark	20% (small single-pipeline packets)
PostgreSQL	13.20-1	benchmarksql	20% (read-only, write-only, and read/write)
Memcached	1.6.12-3	memaslap	10% (small single-pipeline packets)

Based on the application acceleration type you configured, the optimized application version from the Huawei Cloud EulerOS yum repository will be installed on the FlexusX instance. If you use other application versions, you may not get the accelerated performance.
If you choose not to use application acceleration, Nginx, Redis, MySQL, PostgreSQL, and Memcached will not be pre-installed in the Huawei Cloud EulerOS 2.0 image.
Huawei Cloud EulerOS 2.0 can accelerate only one type of application at a time.
Huawei Cloud EulerOS 2.0 supports application acceleration only in some regions. For details, see the management console.

Enabling Application Acceleration

When purchasing a FlexusX instance, select the Huawei Cloud EulerOS 2.0 public image.
Select Application Acceleration and then select Nginx, Redis, MySQL, PostgreSQL, or Memcached for application acceleration.
Figure 1 Setting image information
(Optional) Set Security Group.

If you do not use the default security group (outbound rules allow all ports by default) when purchasing a FlexusX instance, you need to perform this step to allow specific ports so that application acceleration can be available.

Allow the following ports in the outbound rules:
- TCP: 53, 80, and 443
- UDP: 53
Figure 2 Outbound rules

Viewing Application Acceleration

Remotely log in to the FlexusX instance. For details, see Login Modes.
Run the following command as the root user:
```
systemctl status <APP_Name>
```
Replace <APP_Name> with the process name of the application to be accelerated, for example, nginx, redis, mysqld, postgresql, or memcached.

If the returned status is active (running), application acceleration takes effect and the application is running properly.

Table 2 lists the listening IP addresses, ports, and official websites of applications. For details about how to use these applications, see their official websites.

**Table 2** Application details
Application	Listening IP	Listening Port	Official Website
Nginx	127.0.0.1	80 (HTTP)	https://nginx.org
MySQL	127.0.0.1	3306	https://www.mysql.com
Redis	127.0.0.1	6379	https://redis.io
PostgreSQL	127.0.0.1	5432	https://www.postgresql.org
Memcached	127.0.0.1	11211	https://memcached.org

If your stress test tool or client wants to connect to the applications, the inbound rules of the security group must allow the listening ports listed in Table 2. Otherwise, the application cannot be connected.

Figure 3 Inbound rules
Click to enlarge

Uninstalling the Accelerated Application

If Nginx, Redis, MySQL, PostgreSQL, or Memcached is no longer needed, you can uninstall it. After the application is uninstalled, application acceleration cannot be enabled again.