无法读取证书文件：/root/ssl/mongodb.pem MongoDB SSL 问题

Question

我无法重新启动我的mongodb服务。在检查日志时，/var/log/mongodb/mongod.log我收到以下错误：

cannot read certificate file: /root/ssl/mongodb.pem error:0200100D:system library:fopen:Permission denied
2019-11-23T17:04:27.679+0000 F  CONTROL  [main] Failed global initialization: InvalidSSLConfiguration: Can not set up PEM key file.

我的/etc/mongod.conf看起来像：

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# Where and how to store data.
storage:
  dbPath: /var/lib/mongodb
  journal:
    enabled: true
#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1
  tls:
      mode: requireTLS
      certificateKeyFile: /root/ssl/mongodb.pem
# how the process runs
processManagement:
  timeZoneInfo: /usr/share/zoneinfo

#security:

#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options:

#auditLog:

#snmp:

文件夹的权限/root/ssl/是：

-rw-rw-r-- 1 mongodb mongodb 1354 Nov 23 16:22 mongodb.crt
-rw-rw-r-- 1 mongodb mongodb 1082 Nov 23 16:22 mongodb.csr
-rw-rw-r-- 1 mongodb mongodb 1679 Nov 23 16:21 mongodb.key
-rw-rw-rw- 1 mongodb mongodb 3033 Nov 23 16:22 mongodb.pem
-rw-rw-r-- 1 mongodb mongodb 1751 Nov 23 16:20 rootCA.key
-rw-rw-r-- 1 mongodb mongodb 1472 Nov 23 16:21 rootCA.pem
-rw-rw-r-- 1 mongodb mongodb   17 Nov 23 16:22 rootCA.srl

Ubuntu 16.04 LTS
MongoDB : 4.2 

Answer 1

该文件夹root通常具有以下权限：

drwx------    5 root root  4096 Nov 25 15:32 root/

这意味着用户mongodb首先无法访问它。

我的建议是将文件夹中的文件移动/root/ssl到/etc/ssl/mongodb/并相应地更新 mongod.conf 文件。