Monitoring Features

Last updated: 2020-05-09 17:44:53

    Monitoring Granularity

    TencentDB for MongoDB does not support customizing monitoring granularity. The adaptive monitoring policy is as follows:

    Time Span Monitoring Granularity Retention Period
    0–2 days 1 minute 2 days
    2–7 days 5 minutes 7 days
    7–30 days 1 minute 30 days

    Types of Instances for Monitoring

    TencentDB for MongoDB master, read-only, and disaster recovery instances can be monitored, and each instance is provided with a separate monitoring view for easy query.

    Monitoring Metrics

    Cloud Monitor provides the following monitoring metrics for TencentDB for MongoDB instances:

    Metric Name Metric Unit Dimension Description
    Write requests inserts - Cluster Number of write requests in the current cluster
    Read requests reads - Cluster Number of read requests in the current cluster
    Update requests updates - Cluster Number of update requests in the current cluster
    Deletion requests deletes - Cluster Number of deletion requests in the current cluster
    count requests counts - Cluster Total number of requests in the current cluster
    Aggregates requests aggregates - Cluster Number of aggregation requests in the current cluster
    Cluster connections conn - Cluster Total number of connections, i.e., the total number of connections received by the current cluster proxy
    Cluster connection percentage connper % Cluster Proportion of current connections to the configured total connections of the cluster
    Capacity utilization diskusage % Cluster Proportion of used storage capacity to the configured total capacity of the cluster
    QPS qps - Cluster Operations per second, including CRUD operations
    10–50 ms 10 ms - Cluster Number of requests with an execution time between 10 and 50 ms
    50–100 ms 50 ms - Cluster Number of requests with an execution time between 50 and 100 ms
    100 ms 100 ms - Cluster Number of requests with an execution time of more than 100 ms
    Timeouts timeouts - Cluster Number of timed-out requests
    Master/slave lag slavedelay Seconds Cluster Master/slave lag time
    Oplog time difference oplogreservedtime Hours Cluster Time difference between the last operation and the first operation in oplog
    CPU utilization cpuusage % Node CPU utilization of the current node
    Memory utilization memusage % Node Memory utilization of the current node
    qr qr - Node Length of client read request queue
    qw qw - Node Length of client write request queue
    Connection count conn - Node Number of connections of the current mongod node
    netin netin MB/s Node Inbound traffic
    netout netout MB/s Node Outbound traffic

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