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背景介绍
本文基于 MongoDB 4.2 版本，在 Kylin V10 操作系统下完成了 MongoDB 集群（1主2从）的非容器化部署验证工作，以下为完整过程。
过程回顾
1、创建目录
代码语言：javascript代码运行次数：0运行复制<code class="javascript"># 创建安装目录、运行目录、pid目录、数据目录、配置目录、日志目录mkdir -p /data/mongodb4-install /data/mongodb4/bin /data/mongodb4/run /data/mongodb4/data /data/mongodb4/conf /data/mongodb4/log</code>
2、下载安装包
代码语言：javascript代码运行次数：0运行复制<code class="javascript">cd /data/mongodb4-installwget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.2.25.tgz</code>
3、安装二进制文件
代码语言：javascript代码运行次数：0运行复制<code class="javascript">cd /data/mongodb4-install # 解压文件tar -xzf mongodb-linux-x86_64-rhel70-4.2.25.tgz # 拷贝可执行文件cp mongodb-linux-x86_64-rhel70-4.2.25/bin/* /data/mongodb4/bin/ # 拷贝配置文件（文件内容见附录）cp /data/mongodb4-install/mongod.conf /data/mongodb4/conf/mongod.conf # 拷贝启动文件（文件内容见附录）cp /data/mongodb4-install/mongod.service /usr/lib/systemd/system/mongod.service</code>
4、创建用户、用户主、修改属主
代码语言：javascript代码运行次数：0运行复制
<code class="javascript"># 创建用户、用户主groupadd mongoduseradd -g mongod mongod # 修改目录属主chown -R mongod:mongod /data/mongodb4 # 可以为 mongod 设置密码# passwd mongod 或 echo <new_password> | passwd --stdin mongod</code>
5、修改环境变量
代码语言：javascript代码运行次数：0运行复制<code class="javascript"># 分别在 root 用户和 mongod 用户下执行cat >> ~/.bashrc <<EOFexport PATH=$PATH:/data/mongodb4/binEOF############################################################################tail -5 ~/.bashrc && source ~/.bashrc</code>
6、检查动态库文件
代码语言：javascript代码运行次数：0运行复制<code class="javascript">ldd /data/mongodb4/bin/mongod | grep "not found"# 如果返回的结果为空，则可以忽略后续步骤# 如果返回的结果如下，则需要执行后续步骤libcrypto.so.10 => not foundlibssl.so.10 => not found cd /data/mongodb4-install # 下载 openssl 源码wget -O OpenSSL_1_0_2n.tgz https://codeload.github.com/openssl/openssl/tar.gz/refs/tags/OpenSSL_1_0_2n # 解压文件tar -xzf OpenSSL_1_0_2n.tgz && cd openssl-OpenSSL_1_0_2n # 源码编译mkdir -p /usr/local/openssl_1.0.2./config shared --prefix=/usr/local/openssl_1.0.2make && make install cp -p /usr/local/openssl_1.0.2/lib/libssl.so /lib64/libssl.so.10cp -p /usr/local/openssl_1.0.2/lib/libcrypto.so /lib64/libcrypto.so.10 # 再次检查动态库文件ldd /data/mongodb4/bin/mongod | grep "not found"</code>
7、启动服务
代码语言：javascript代码运行次数：0运行复制<code class="javascript">#重新加载systemctl daemon-reload #启动服务systemctl start mongod.service #查看服务状态systemctl status mongod.service #设置服务自启systemctl enable mongod.service</code>
8、初始化副本集
代码语言：javascript代码运行次数：0运行复制<code class="javascript"># 执行 mongo 命令mongo # 连接到任何一个节点，执行初始化rs.initiate( { _id : "prod01", members: [ { _id: 0, host: "<节点一IP>:27017" }, { _id: 1, host: "<节点二IP>:27017" }, { _id: 2, host: "<节点三IP>:27017" } ]}) # 注意：其他服务无法解析主机名，请使用节点IP进行初始化，否则业务服务会有如下报错：panic: server selection error: server selection timeout, current topology: { Type: ReplicaSetNoPrimary, Servers: [{ Addr: kylin-test-00003:27017, Type: Unknown, Last error: connection() error occurred during connection handshake: dial tcp: lookup kylin-test-00003 on 10.96.0.10:53: no such host }, { Addr: kylin-test-00004:27017, Type: Unknown, Last error: connection() error occurred during connection handshake: dial tcp: lookup kylin-test-00004 on 10.96.0.10:53: no such host }, { Addr: kylin-test-00005:27017, Type: Unknown, Last error: connection() error occurred during connection handshake: dial tcp: lookup kylin-test-00005 on 10.96.0.10:53: no such host }, ] } # 查看副本集配置、状态rs.conf()rs.status() # 其他必要的初始化处理</code>9、设置备份任务
代码语言：javascript代码运行次数：0运行复制<code class="javascript"># 主库服务器执行，切换至 root 用户mkdir /data/backup && touch /data/backup/backup.shcat > /data/backup/backup.sh <<EOF#!/bin/bashdata_time=\$(date +%F_%H)save_time=7/data/mongodb4/bin/mongodump -u<your_user> -p<your_passwd> --authenticationDatabase user_log --gzip -o /data/backup/\${data_time}mongofind /data/backup -maxdepth 1 -type d -mtime +\${save_time} | xargs rm -rfEOF############################################################################echo "00 */6 * * * bash /data/backup/backup.sh" > /var/spool/cron/rootcrontab -l</code>附录
1、mongod.conf
代码语言：javascript代码运行次数：0运行复制<code class="javascript"># where to write logging data.systemLog: quiet: true destination: file logAppend: true path: /data/mongodb4/log/mongod.log # Where and how to store data.storage: dbPath: /data/mongodb4/data journal: enabled: true commitIntervalMs: 500 # how the process runsprocessManagement: fork: true # fork and run in background pidFilePath: /data/mongodb4/run/mongod.pid # location of pidfile timeZoneInfo: /usr/share/zoneinfo # network interfacesnet: port: 27017 bindIp: 0.0.0.0 # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting. #security:# authorization: enabled #replca setreplication: replSetName: "prod01"</code>
2、mongod.service
代码语言：javascript代码运行次数：0运行复制<code class="javascript">[Unit]Description=MongoDB Database ServerDocumentation=https://docs.mongodb.org/manualAfter=network.target [Service]User=mongodGroup=mongodEnvironment="OPTIONS=-f /data/mongodb4/conf/mongod.conf"EnvironmentFile=-/etc/sysconfig/mongodExecStart=/data/mongodb4/bin/mongod $OPTIONSPermissionsStartOnly=truePIDFile=/data/mongodb4/run/mongod.pidType=forking# file sizeLimitFSIZE=infinity# cpu timeLimitCPU=infinity# virtual memory sizeLimitAS=infinity# open filesLimitNOFILE=64000# processes/threadsLimitNPROC=64000# locked memoryLimitMEMLOCK=infinity# total threads (user+kernel)TasksMax=infinityTasksAccounting=false# Recommended limits for for mongod as specified in# http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install]WantedBy=multi-user.target</code>
