安装mongodb 遇到的坑

安装mongodb

wget https://repo.mongodb.org/yum/redhat/8/mongodb-org/4.4/x86_64/RPMS/mongodb-org-server-4.4.0-1.el8.x86_64.rpm

yum -ivh mongodb-org-server-4.4.0-1.el8.x86_64.rpm

配置

vi /etc/mongod.conf
重点注意
storage:
  dbPath: /data/mongod
net:
  port: 27017
  bindIp: 192.168.1.158

启动

systemctl start mongod
Job for mongod.service failed because the control process exited with error code.
See "systemctl status mongod.service" and "journalctl -xe" for details.

报错日志在 /var/log/mongod
"error":"IllegalOperation: Attempted to create a lock file on a read-only directory: /data/mongod
这说明没有权限

chmod 777 /data/mongod

问题依然

chown mongod:mongod /data/mongod

问题依然
通过官方文档找到：

On RHEL 7.0, if you change the data path, the default SELinux  
 policies will prevent mongod from having write access on the new  
 data path if you do not change the security context.

默认目录/var/lib/mongo含有mongod_var_lib_t，这样selinux的安全策略有关。
解决方法是修改对应文件夹的security context

chcon -Rv --type=mongod_var_lib_t /data/mongod

问题得到解决