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Use Limits

Last updated: 2022-05-18 11:49:38

    Notes

    • FL only supports the collection of flow logs of ENI, NAT Gateways, and cross-region CCN traffic within the specified VPC range but not in the classic network.
      Note:

      The FL service for NAT Gateway and cross-region CCN traffic is currently in beta. To try it out, submit a ticket.

    • The configurations of a flow log cannot be modified after creation. For example, the cloud log service (CLS) to which the flow log is published cannot be modified.
    • FL does not support capturing the following IP traffic:
      • Traffic generated by Windows instances for activation of Windows license.
      • DHCP traffic.
    • Only one flow log can be created for each ENI.
    • FL collects the original outbound traffic and limited inbound traffic of the ENI on a CVM.
      Assume you create a flow log for the ENI on a CVM:
      • When the CVM accesses the public network through a cloud load balancer, the "1" traffic will be collected for the outbound direction and the "2" traffic will be collected for the inbound direction.
      • When the CVM accesses the public network through a NAT Gateway, the "3" traffic will be collected for the outbound direction and the "4" traffic will be collected for the inbound direction.

    Dashboard-Enabled Flow Log Types

    Currently, advanced analysis dashboards can be created and viewed only for flow logs of the ENI type in the logset and log topic with the "Flowlog" flag.

    Note:

    In Topic Configuration, you can create a logset "flowlog_logset" and log topic with the "Flowlog" flag.

    Supported List

    Note:

    The flow log feature is available in all regions, but there are regional restrictions in CLS, so data in some regions may not be delivered to CLS. For more information, see CLS' available regions.

    The following ENI CVM models support flow log collection:

    • Standard S1, S2, and S3
    • MEM Optimized M1, M2, and M3
    • High IO I1, I2, and I3
    • Compute C2 and C3 and Compute Enhanced CN3
    • Big Data D1
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