MongoDB 单机安装部署
本篇文章介绍 MongoDB 二进制安装的步骤，整个过程还是比较简单。
1. 下载安装包
进入 MongoDB 官网，获取安装包的下载链接：
以下载 5.0.23 版本为例：
wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-5.0.23.tgz
2. 安装数据库
解压缩包：
tar -zxvf mongodb-linux-x86_64-rhel70-5.0.23.tgz
drwxr-xr-x 2 root root 70 12月 19 10:21 bin -rw-r--r-- 1 root root 30608 11月 20 23:29 LICENSE-Community.txt -rw-r--r-- 1 root root 16726 11月 20 23:29 MPL-2 -rw-r--r-- 1 root root 1977 11月 20 23:29 README -rw-r--r-- 1 root root 77913 11月 20 23:29 THIRD-PARTY-NOTICES
mv mongodb-linux-x86_64-rhel70-5.0.23 /usr/local/mongodb
创建配置文件：
touch /usr/local/mongodb/mongod.conf
创建数据目录：
mkdir -p /data/mongodb/{data,logs,run}创建 mongod 用户：
groupadd mongod
useradd -g mongod -s /sbin/nologin -r mongod
修改文件属组：
chown -R mongod:mongod /usr/local/mongodb/
chown -R mongod:mongod /data/mongodb/
配置环境变量：
echo "export PATH=\$PATH:/usr/local/mongodb/bin" >> /etc/profile
source /etc/profile
写入配置文件：
vi /usr/local/mongodb/mongod.conf
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /data/mongodb/logs/mongod.log
# Where and how to store data.
storage:
dbPath: /data/mongodb/data
journal:
enabled: true
# how the process runs
processManagement:
fork: true # fork and run in background
pidFilePath: /data/mongodb/run/mongod.pid # location of pidfile
# network interfaces
net:
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
启动 MongoDB：
PS：可以不用启动，直接配置 systemctl : ）
/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongod.conf
about to fork child process, waiting until server is ready for connections. forked process: 28580 child process started successfully, parent exiting
关闭 MongoDB：
/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongod.conf --shutdown
3. 配置 systemctl
配置前需要把刚启动的 MongoDB 手动关闭掉，否则测试会报错。
vi /usr/lib/systemd/system/mongod.service
将下面内容，写入 mongod.service 中。
[Unit]
Description=MongoDB Database Server
Documentation=https://docs.mongodb.org/manual
After=network-online.target
Wants=network-online.target
[Service]
User=mongod
Group=mongod
Environment="OPTIONS=-f /usr/local/mongodb/mongod.conf"
ExecStart=/usr/local/mongodb/bin/mongod $OPTIONS
PermissionsStartOnly=true
PIDFile=/data/mongodb/run/mongod.pid
Type=forking
# file size
LimitFSIZE=infinity
# cpu time
LimitCPU=infinity
# virtual memory size
LimitAS=infinity
# open files
LimitNOFILE=64000
# processes/threads
LimitNPROC=64000
# locked memory
LimitMEMLOCK=infinity
# total threads (user+kernel)
TasksMax=infinity
TasksAccounting=false
# Recommended limits for mongod as specified in
# https://docs.mongodb.com/manual/reference/ulimit/#recommended-ulimit-settings
[Install]
WantedBy=multi-user.target
重新加载配置：
systemctl daemon-reload
# 启动
systemctl start mongod
# 查看状态
systemctl status mongod
# 设置开机自启
systemctl enable mysqld
PS：如果使用 systemctl 启动失败，通常是目录授权问题，或者是未删除 mongod.lock 找到它并删除再重试。
4. 创建 root 用户
配置文件中开启了授权，所以进入 MongoDB 后需要先创建 root 高权限账号。
use admin
db.createUser ( {user: "root",pwd: "admin123",roles: [{role: "root", db: "admin"}]})
