Network Monitoring

During activities on a crowdsourcing platform, traffic to the website homepage, login page, and store details page increases instantaneously. The outbound bandwidth needs to be monitored at any time.

In addition, if the number of connections increases sharply due to DDoS attacks or heavy traffic, service access becomes slow. The number of SNAT connections on days with activities is expected to be two to three times higher. Therefore, you need to monitor the number of SNAT connections at any time.

Procedure

Log in to the management console.
In the upper left corner, select a region and a project.
Choose Service List > Cloud Eye.
Choose Cloud Service Monitoring.
Click the name of the VPC dashboard to access its details page.
1. Locate the row that contains the target VPC and choose More > Create Alarm Rule in the Operation column.
2. On the Create Alarm Rule page, set parameters as shown in Figure 1.
  You are advised to set the threshold of the outbound bandwidth usage to 80%.
  Figure 1 Creating an alarm rule (for a VPC)
3. Click Create.
Click the NAT Gateway dashboard to access its details page.
1. Locate the row that contains the target NAT gateway and choose More > Create Alarm Rule in the Operation column.
2. On the Create Alarm Rule page, set parameters as shown in Figure 2.
  In this example, the number of SNAT connections is 10,000 in normal days, and that number is two to three times in peak hours. Therefore, you are advised to set the threshold of SNAT connections to 30,000.
  Figure 2 Creating an alarm rule (for a NAT gateway)
3. Click Create.