MongoDB慢日志文件分析工具-mtools
一、mtools工具集介绍
1.1 mtools工具集是什么?
开源地址介绍:https://github.com/rueckstiess/mtools
mtools是一组工具集脚本,用于解析、过滤和可视化 MongoDB 日志文件 ( mongod, mongos)。mtools也包含mlaunch工具,该工具可以快速搭建本地测试环境。mtransfer工具可以用于数据库之间数据传输。
1.2 mtools工具组件介绍
- mlogfilter:日志过滤组件,支持按时间切割、合并、过滤慢查询、查找全表扫描操作,支持通过多个属性进行信息过滤,支持输出为JSON格式。
- mloginfo:返回有关日志文件的信息,例如:开始和结束时间、版本、二进制文件、重新启动、连接、不同视图等特殊部分
- mplotqueries:支持将日志分析结果转换为图表形式,依赖于tkinter(python图形模块)和matplotlib模块。
- mlaunch:支持快速部署本地测试环境,可以是单机、副本集、分片集群。(依赖pymongo)
- mtransfer:通过复制 WiredTiger 数据文件在 MongoDB 实例之间传输数据库的实验脚本。(需要
pymongo
和wiredtiger
)
二、mtools工具的使用
#(1)安装mtools工具及依赖 pip3 install mtools yum install python-tools pip3 install psutil pip3 install pymongo pip3 install matplotlib pip3 install numpy #(2)安装Python环境 wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tar.xz xz -d Python-3.6.8.tar.xz tar -xvf Python-3.6.8.tar cd Python-3.6.8/ ./configure --with-ssl # 带上ssl不然pip会出现错误 make make install
2.1 mloginfo日志统计
(1)日志总体信息,比如:日志的起止时间范围、主机端口、版本、数据库引擎等概要信息。
[root@10-23-85-17 ~]# mloginfo mongodb.log source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger
(2)连接数
[root@10-23-85-17 ~]# mloginfo mongodb.log --connections source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger CONNECTIONS total opened: 14282 total closed: 14358 no unique IPs: 4 socket exceptions: 0 127.0.0.1 opened: 12886 closed: 12889 172.21.0.10 opened: 658 closed: 716 172.21.0.20 opened: 461 closed: 490 172.21.0.30 opened: 277 closed: 263
(3)事件统计,即统计出当前某些事件的发生频次
[root@10-23-85-17 ~]# mloginfo mongodb.log --distinct source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger DISTINCT 25460 SocketException handling request, closing client connection: 19504 assertion ... ns: ... query: 18464 exception: ... on: 5075 going to kill op: 660 Index ... : 400 Error in heartbeat request to ... ; 312 build index on: ... properties: 312 building index using bulk method 300 Placing a marker at optime 59 Successfully connected to 44 Member ... is now in state 28 DBClientCursor::init call() failed 27 Socket recv() timeout 27 SocketException: remote: ... error: 23 Plan executor error during find: ... , stats: 18 transition to
(4)慢查询:显示所有慢查询,并按出现次数排序
[root@10-23-85-17 ~]# mloginfo mongodb.log --queries --sort count source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger QUERIES namespace operation pattern count min (ms) max (ms) 95%-ile (ms) sum (ms) mean (ms) allowDiskUse doyo.news count {"$or": [{"n_cate": 1}, {"n_prop": 1}], "bigcate": 1, "status": 1} 188339 587 492592 45736.2 1247160002 6621.9 None doyo.resource query {"cate": 1, "status": 1} 173569 101 429614 1792.0 78818078 454.1 None doyo.news query {"nid": 1, "status": 1} 120989 101 1159648 760531.2 12485218384
(5)重启信息
[root@10-23-85-17 ~]# mloginfo mongodb.log --restart source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger RESTARTS May 27 08:44:55 version 3.2.7 May 27 08:59:23 version 3.2.7 May 27 11:25:00 version 3.2.7
(6)副本切换情况
[root@10-23-85-17 ~]# mloginfo mongodb.log --rsstate source: mongodb.log host: 84b511baa949:27017 start: 2022 May 27 00:00:05.941 end: 2022 May 28 00:00:06.954 date format: iso8601-local timezone: UTC +0800 length: 1437359 binary: mongod version: 3.2.7 storage: wiredTiger RSSTATE date host state/message May 27 08:44:58 10.23.1.242:27017 ARBITER May 27 08:44:58 10.23.1.26:27017 PRIMARY May 27 08:54:42 10.23.1.26:27017 SECONDARY May 27 08:59:25 10.23.1.242:27017 ARBITER May 27 08:59:25 10.23.1.26:27017 SECONDARY May 27 08:59:30 10.23.1.26:27017 PRIMARY May 27 08:59:42 10.23.1.26:27017 SECONDARY
2.2 日志过滤
(1)查询超过10s的慢查询
[root@10-23-85-17 ~]# mlogfilter mongodb.log --slow 10000 --shorten 200 2022-05-27T08:27:25.862+0800 I COMMAND [conn84751] query doyo.news query: { $query: { nid: { $gt: ...0 } }, Database: { acquireCount: { r: 3795 } }, Collection: { acquireCount: { r: 3795 } } } 10510ms 2022-05-27T08:27:28.254+0800 I COMMAND [conn84689] command doyo.news command: count { count: "news... acquireCount: { r: 3788 } }, Collection: { acquireCount: { r: 3788 } } } protocol:op_query 10247ms
(2)查询慢扫描操作
- 慢扫描是指该操作需要扫描过多的记录(超过1w行),且返回数量不足扫描数量的1/100,这样的操作通常对CPU消耗很高,也比较低效
[root@10-23-85-17 ~]# mlogfilter mongodb.log --scan --shorten 200 2022-05-27T12:10:51.816+0800 I COMMAND [conn581] query doyo.news query: { $query: { bigcate: "2", ...0 } }, Database: { acquireCount: { r: 1470 } }, Collection: { acquireCount: { r: 1470 } } } 11869ms 2022-05-27T12:10:53.739+0800 I COMMAND [conn578] query doyo.news query: { $query: { bigcate: "1", ...6 } }, Database: { acquireCount: { r: 3183 } }, Collection: { acquireCount: { r: 3183 } } } 14412ms
(3)获取某时间点之后1小时的日志
[root@10-23-85-17 ~]# mlogfilter mongodb.log --from May 27 0:00 --to "+1h" | tail -n3 2022-05-27T00:00:05.941+0800 I CONTROL [conn80893] distarch: x86_64 2022-05-27T00:00:05.941+0800 I CONTROL [conn80893] target_arch: x86_64
作者:UStarGao
链接:https://www.starcto.com/mongodb/295.html
来源:STARCTO
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