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MongoStatus

Last updated: 2022-08-13 16:25:49

    Overview

    To facilitate daily database Ops, DBbrain provides the TencentDB for MongoDB MongoStatus tool. This tool monitors the MongoDB status at the instance or node level by checking the traffic and storage engine in real time.

    Directions

    Instance-level MongoDB status

    1. Log in to the DBbrain console and select Performance Optimization on the left sidebar. On the displayed page, select a database type and an instance at the top, and select the Performance Trends tab.
    2. Select Instance > MongoStatus.
    3. Click Pause in the top-right corner to pause and view the data.
    
    

    Node-level MongoDB status

    1. Log in to the DBbrain console and select Performance Optimization on the left sidebar. On the displayed page, select a database type and an instance at the top, and select the Performance Trends tab.
    2. Select Mongod Node > MongoStatus.
    3. Select a node in the drop-down list.
    4. Click Pause in the top-right corner to pause and view the data.

    MongoStatus monitoring metrics

    MongoStatus fields are as described below:
    Monitoring Field
    Description
    Impact on Performance and Optimization
    host
    Node address
    -
    insert
    Number of insertions per second
    If the value of this field stays high, you can perform optimization based on the analysis of dirty and used.
    query
    Number of query requests per second
    Check the index and make sure that the index exists.
    update
    Number of updates per second
    1. Check the index and make sure that the index exists.
    2. 2. If the value of this field stays high, you can perform optimization based on the analysis of dirty and used.
    delete
    Number of deletions per second
    1. Check the index and make sure that the index exists.
    2. If the value of this field stays high, you can perform optimization based on the analysis of dirty and used.
    getmore
    Number of getMore requests per second
    -
    command
    Number of commands per second
    -
    dirty
    Proportion of dirty data cached in the storage engine
    If the value of this field stays high (above 20% by default), we recommend you increase the value of threads_max in the storage engine.
    used
    Proportion of the used cache of the storage engine
    If the value of this field stays high (above 95% by default), we recommend you increase the value of threads_max in the storage engine.
    flushes
    Number of flushes per second
    -
    vsize
    Amount of virtual memory used by processes
    -
    res
    Amount of resident memory used by processes
    -
    qrw
    Information of the waiting read/write queue on the client
    If the value of this field stays above 0 and the value of arw stays close to 128, requests are queuing.
    arw
    Information of the active read/write queue on the client
    -
    net_in
    Inbound traffic
    -
    net_out
    Outbound traffic
    -
    conn
    Number of connections
    -
    set
    Replica set name
    -
    repl
    Source-replica status
    -
    time
    Monitoring time point
    -
    
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