今天我在一个几乎空白的系统上安装 Ambari-Server 时遇到了问题：
[root@<server>/]# ambari-server setup
Using python /usr/bin/python2.6
Setup ambari-server
Checking SELinux...
SELinux status is 'disabled'
Customize user account for ambari-server daemon [y/n] (n)?
Adjusting ambari-server permissions and ownership...
Checking firewall status...
FATAL: Could not load /lib/modules/2.6.32-504.16.2.el6.x86_64/modules.dep: No such file or directory
iptables v1.4.7: can't initialize iptables table 'filter': Permission denied (you must be root)
Perhaps iptables or your kernel needs to be upgraded.
FATAL: Could not load /lib/modules/2.6.32-504.16.2.el6.x86_64/modules.dep: No such file or directory
iptables v1.4.7: can't initialize iptables table 'nat': Permission denied (you must be root)
Perhaps iptables or your kernel needs to be upgraded.
WARNING: iptables is running. Confirm the necessary Ambari ports are accessible. Refer to the Ambari documentation for more detai
OK to continue [y/n] (y)?
Checking JDK...
[1] OpenJDK 1.8.0
[2] OpenJDK 1.7.0 (deprecated)
[3] Custom JDK
==============================================================================
Enter choice (1):
Downloading JDK from http://birepo-build.svl/repos/IOP-UTILS/RHEL7/x86_64/1.1/openjdk/jdk-1.8.0.tar.gz to /var/lib/ambari-1.8.0.tar.gz
jdk-1.8.0.tar.gz... 100% (56.5 MB of 56.5 MB)
Successfully downloaded JDK distribution to /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz
Installing JDK to /usr/jdk64/
Installation of JDK has failed: [Errno 2] No such file or directory
JDK found at /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz. Would you like to re-download the JDK [y/n] (y)?
Re-downloading JDK from http://birepo-build.svl/repos/IOP-UTILS/RHEL7/x86_64/1.1/openjdk/jdk-1.8.0.tar.gz to /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz
jdk-1.8.0.tar.gz... 100% (56.5 MB of 56.5 MB)
Successfully downloaded JDK distribution to /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz
Successfully re-downloaded JDK distribution to /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz
Installing JDK to /usr/jdk64/
Installation of JDK was failed: [Errno 2] No such file or directory
ERROR: Exiting with exit code 1.
REASON: Downloading or installing JDK failed: 'Fatal exception: Unable to install JDK. Please remove JDK, file found at /var/lib/ambari-server/resources/jdk-1.8.0.tar.gz and re-run Ambari Server setup, exit code 1'. Exiting.`
搜索一下我自己做了一些调查，因为它在 Docker 主机上运行。因此 IPTables 问题，这是由于它位于 Docker 容器中，并且 NET_ADMIN 功能适用于非特权容器。非特权容器无法更改其网络配置。