Check replication lag mongodb

Current operations (slow queries) db.currentOp({active:true, secs_running:{$gt:5}}) Dump a database mongodump --uri='mongodb://localhost:27017' --db=mydb --out=/backup/$(date +%F) Replica set status mongosh --eval 'rs.status().members.forEach(m=>print(m.name,m.stateStr,m.optimeDate))' Kill long-running ops mongosh --eval 'db.currentOp({secs_running:{$gt:5},op:{$ne:"none"}}).inprog.forEach(o=>{print(o.opid,o.secs_running,o.ns); db.killOp(o.opid)})' Query plan with stats mongosh --eval 'db.<name>.find({status:"active"}).explain("executionStats").executionStats'