Before You Begin

(Optional) Configure an HTTP Proxy

The Cloudera Manager installer accesses by using yum on RHEL systems, zypper on SLES systems, or apt-get on Ubuntu systems. If your hosts access the Internet through an HTTP proxy, you can configure yum, zypper, or apt-get, system-wide, to access through a proxy.

To do so, modify the system configuration on every cluster host as follows:

OS File Property
RHEL-compatible /etc/yum.conf proxy=http://server:port/
SLES /root/.curlrc --proxy=http://server:port/
Ubuntu /etc/apt/apt.conf Acquire::http::Proxy "http://server:port";

Disable SELinux

Although Cloudera supports running Cloudera software with SELinux enabled, the Cloudera Manager installer will not proceed if SELinux is enabled. Disable SELinux or set it to permissive mode before running the installer. For instructions, see Setting SELinux mode.

After you have installed and deployed Cloudera Manager and CDH, you can re-enable SELinux by changing SELINUX=permissive back to SELINUX=enforcing in /etc/selinux/config (or /etc/sysconfig/selinux), and then running the following command to immediately switch to enforcing mode:

setenforce 1

If you are having trouble getting Cloudera Software working with SELinux, contact your OS vendor for support. Cloudera is not responsible for developing or supporting SELinux policies.