Log Printing

Context

SFS Turbo can provide multiple service nodes for shared log output directories, facilitating log collection and management of distributed applications. Features of such services are as follows:

• A shared file system is mounted to multiple service hosts and logs are printed concurrently.
• Large file size and small I/O: The size of a single log file is large, but the I/O of each log writing is small.
• Write I/O intensive: Write I/O of small blocks is the major service.

Configuration Process

1. Log in to the SFS console. Create an SFS Turbo file system to store the log files.
2. Log in to the server that functions as the compute node and mount the file system.
3. Configure the log directory to the shared file system. It is recommended that each host use different log files.
4. Start applications.

Prerequisites

• A VPC has been created.
• Servers that function as head nodes and compute nodes have been created, and have been assigned to the VPC.
• SFS has been enabled.

Example Configuration

1. Log in to the SFS console.
2. In the navigation pane, choose SFS Capacity-Oriented. In the upper right corner of the page, click Create File System.
3. On the Create File System page, set parameters as instructed.
4. After the configuration is complete, click Create Now.

   To mount a file system to Linux ECSs, see Mounting an NFS File System to ECSs (Linux). To mount a file system to Windows ECSs, see Mounting an NFS File System to ECSs (Windows) and Mounting a CIFS File System to ECSs (Windows).

5. Configure the log directory to the shared file system. It is recommended that each host use different log files.
6. Start applications.