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2025-04-06 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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Problem description:
When analyzing the performance problems in the production environment, it is often impossible to start because there is no real-time basis. Then the author captures db.currentOp () to the file and serves as a scheduled task for subsequent analysis.
Solution:
Step 1: Shell script records db.currentOp ()
1. Create a folder
Mkdir currentOp
two。 Create currentOp.sh
#! / bin/shMONGO=/usr/bin/mongoDATE=$ (date +% Y%m%d%H%M) CURRENTOPFILE=/home/xucy/currentOp/$DATE$MONGO admin-uxucy-pPassw0rd-- eval "rs.slaveOk (); printjson (db.currentOp ());" > $CURRENTOPFILE 2 > & 1LOCATION=/home/xucy/currentOp/find $LOCATION-mtime + 1-type f | xargs rm-f
Step 2: join the Crontab scheduled task
Crontab-eBay home/xucy/currentOp.sh 5 * / bin/sh / home/xucy/currentOp.sh > / dev/null 2 > & 1
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