Apache2：无法设置挂载命名空间：权限被拒绝

Question

我有 Debian 10 的 VPS 服务器。我想使用选项 PrivateTmp=true 启动 Apache2。 但是在启动时它失败并出现错误：apache2.service: Failed at step NAMESPACE spawning /usr/sbin/apachectl: Permission denied.

    ● apache2.service - The Apache HTTP Server
Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fri 2020-11-27 17:17:43 CET; 5s ago
     Docs: https://httpd.apache.org/docs/2.4/
  Process: 523 ExecStart=/usr/sbin/apachectl start (code=exited, status=226/NAMESPACE)

Nov 27 17:17:43 5091-server systemd[1]: Starting The Apache HTTP Server...
Nov 27 17:17:43 5091-server systemd[523]: apache2.service: Failed to set up mount namespacing: Permission denied
Nov 27 17:17:43 5091-server systemd[523]: apache2.service: Failed at step NAMESPACE spawning /usr/sbin/apachectl: Permission denied
Nov 27 17:17:43 5091-server systemd[1]: apache2.service: Control process exited, code=exited, status=226/NAMESPACE
Nov 27 17:17:43 5091-server systemd[1]: apache2.service: Failed with result 'exit-code'.
Nov 27 17:17:43 5091-server systemd[1]: Failed to start The Apache HTTP Server.

我检查了 tmp 的权限：

root@5091-server:~# ls -ld /tmp
drwxrwxrwt 8 root root 4096 Nov 27 17:17 /tmp
root@5091-server:~# ls -ld /var/tmp
drwxrwxrwt 2 root root 4096 Nov 27 17:17 /var/tmp

知道哪些权限是错误的吗？

Answer 1

这可以工作...

sudo sed -i -e 's,PrivateTmp=true,PrivateTmp=false\nNoNewPrivileges=yes,g' /lib/systemd/system/apache2.service
sudo systemctl daemon-reload
sudo systemctl start apache2.service
sudo systemctl status apache2.service