## 环境信息
– 操作系统：Oracle Linux 9.3
– 服务器：3台（192.168.1.101, 192.168.1.102, 192.168.1.103）
– MongoDB版本：5.0.13
– 部署模式：副本集
– 内存：32GB
– 存储：SSD 500GB

## 配置文件
$ cat > /mongodb/conf/mongod.conf << EOF # mongod.conf # 存储配置 storage: dbPath: /mongodb/fgdata journal: enabled: true engine: wiredTiger wiredTiger: engineConfig: cacheSizeGB: 16 directoryForIndexes: true collectionConfig: blockCompressor: snappy indexConfig: prefixCompression: true # 日志配置 systemLog: destination: file logAppend: true path: /mongodb/log/mongod.log logRotate: reopen verbosity: 0 # 网络配置 net: port: 27017 bindIp: 0.0.0.0 maxIncomingConnections: 65536 wireObjectCheck: true # 进程管理 processManagement: fork: true pidFilePath: /mongodb/app/mongod.pid # 安全配置 security: authorization: enabled keyFile: /mongodb/conf/keyfile # 复制配置 replication: replSetName: rs0 oplogSizeMB: 20480 enableMajorityReadConcern: true # 操作配置 operationProfiling: slowOpThresholdMs: 100 mode: slowOp EOF ## 启动服务 $ sudo -u mongodb /mongodb/app/bin/mongod --config /mongodb/conf/mongod.conf ## 初始化副本集 $ /mongodb/app/bin/mongosh -u fgedu -p fgedu123 --authenticationDatabase admin fgedu.net.cn> rs.initiate({
… _id: “rs0”,
… members: [
… { _id: 0, host: “192.168.1.101:27017” },
… { _id: 1, host: “192.168.1.102:27017” },
… { _id: 2, host: “192.168.1.103:27017” }
… ]
… })

## 1. 内存调优

### 调整WiredTiger缓存大小
# 根据系统内存调整，一般为系统内存的50%
storage:
wiredTiger:
engineConfig:
cacheSizeGB: 16

### 关闭透明大页
$ echo never > /sys/kernel/mm/transparent_hugepage/enabled
$ echo never > /sys/kernel/mm/transparent_hugepage/defrag

## 2. 存储调优

### 启用压缩
storage:
wiredTiger:
collectionConfig:
blockCompressor: snappy
indexConfig:
prefixCompression: true

### 调整journal
storage:
journal:
enabled: true
commitIntervalMs: 100

## 3. 网络调优

### 调整最大连接数
net:
maxIncomingConnections: 65536

### 调整TCP参数
$ cat > /etc/sysctl.d/mongodb.conf << EOF net.core.somaxconn = 4096 net.ipv4.tcp_max_syn_backlog = 4096 net.ipv4.tcp_fin_timeout = 30 EOF $ sysctl -p /etc/sysctl.d/mongodb.conf ## 4. 复制调优 ### 调整oplog大小 replication: oplogSizeMB: 20480 ### 启用多数读关注 replication: enableMajorityReadConcern: true ## 5. 操作调优 ### 调整慢查询阈值 operationProfiling: slowOpThresholdMs: 100 mode: slowOp

## 1. 检查配置文件
$ /mongodb/app/bin/mongod –config /mongodb/conf/mongod.conf –validate

## 2. 查看运行时配置
$ /mongodb/app/bin/mongosh -u fgedu -p fgedu123 –authenticationDatabase admin
fgedu.net.cn> db.adminCommand({ getParameter: 1, “*”: 1 })

## 3. 检查服务状态
$ /mongodb/app/bin/mongosh -u fgedu -p fgedu123 –authenticationDatabase admin
fgedu.net.cn> db.serverStatus()

## 4. 检查副本集状态
fgedu.net.cn> rs.status()

## 5. 性能测试
fgedu.net.cn> var start = new Date()
fgedu.net.cn> for (let i = 0; i < 10000; i++) { ... db.test_collection.insertOne({id: i, name: "test" + i, value: Math.random() * 1000}) ... } fgedu.net.cn> var end = new Date()
fgedu.net.cn> print(“插入时间: ” + (end – start) + “毫秒”)
插入时间: 1000毫秒

fgedu.net.cn> var start = new Date()
fgedu.net.cn> db.test_collection.find({id: {$gt: 5000}}).limit(1000)
fgedu.net.cn> var end = new Date()
fgedu.net.cn> print(“查询时间: ” + (end – start) + “毫秒”)
查询时间: 10毫秒

## 6. 日志检查
$ tail -n 100 /mongodb/log/mongod.log