I'm unable to properly install Foreman 1.11.1 on an up-to-date version of CentOS 7.2 (installed from CentOS-7-x86_64-DVD-1511.iso, updated via yum -y update, rebooted). This problem persists in fresh installations, so either I'm doing something wrong or something broke quite recently. There's nothing in the documentation indicating I have done something wrong as far as I can see.

These are the steps I run before:

[root@foreman ~]# echo "192.168.205.10 foreman.beckers.local foreman" >> /etc/hosts

To rule out any potential problems caused by the firewall, I open all ports mentioned in the docs:

[root@foreman ~]# firewall-cmd --permanent --zone=public --add-port=53/tcp \
--add-port=53/udp --add-port=67-68/udp --add-port=69/udp --add-port=80/tcp \
--add-port=443/tcp --add-port=3000/tcp --add-port=3306/tcp --add-port=5910-5930/tcp \
--add-port=5432/tcp --add-port=8140/tcp --add-port=8443/tcp
[root@foreman ~]# firewall-cmd --reload
success
[root@foreman ~]# firewall-cmd --list-all
public (default, active)
  interfaces: ens32
  sources:
  services: dhcpv6-client ssh
  ports: 3000/tcp 443/tcp 80/tcp 8140/tcp 5432/tcp 3306/tcp 8443/tcp 67-68/udp 5910-5930/tcp 53/tcp 69/udp 53/udp
  masquerade: no
  forward-ports:
  icmp-blocks:
  rich rules:

This is how I install the necessary repositories and packages:

[root@foreman ~]# yum -y install http://yum.puppetlabs.com/puppetlabs-release-el-7.noarch.rpm
[root@foreman ~]# yum -y install epel-release http://yum.theforeman.org/releases/1.11/el7/x86_64/foreman-release.rpm
[root@foreman ~]# yum -y install foreman-installer

Just to double check, these package versions are installed now:

[root@foreman ~]# rpm -q foreman-installer
foreman-installer-1.11.1-1.el7.noarch
[root@foreman ~]# rpm -q foreman-selinux
foreman-selinux-1.11.1-1.el7.noarch
[root@foreman ~]# rpm -q ruby
ruby-2.0.0.598-25.el7_1.x86_64

Now everything should be ready to install Foreman. After reading through the potential installer options I decided to go with the defaults because they should provide me with a minimal (as in: no DHCP or DNS Smart Proxy functionality) but running Foreman instance. Well, the installer always fails at registering the host as smart proxy to itself. These are the relevant messages, I will attach the complete output of foreman-installer -v as .txt file.

[root@foreman ~]# foreman-installer -v
[...]
[ERROR 2016-05-13 08:52:39 verbose]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[foreman.beckers.local]: Could not evaluate: Proxy foreman.beckers.local cannot be registered (Could not load data from https://foreman.beckers.local
[...]
[ERROR 2016-05-13 08:52:50 verbose]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[foreman.beckers.local]: Failed to call refresh: Proxy foreman.beckers.local cannot be registered (Could not load data from https://foreman.beckers.local
[ INFO 2016-05-13 08:52:50 verbose]  - is your server down?
[ INFO 2016-05-13 08:52:50 verbose]  - was rake apipie:cache run when using apipie cache? (typical production settings)): N/A
[ERROR 2016-05-13 08:52:50 verbose]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[foreman.beckers.local]: Proxy foreman.beckers.local cannot be registered (Could not load data from https://foreman.beckers.local
[ INFO 2016-05-13 08:52:50 verbose]  - is your server down?
[ INFO 2016-05-13 08:52:50 verbose]  - was rake apipie:cache run when using apipie cache? (typical production settings)): N/A
[...]
Something went wrong! Check the log for ERROR-level output
  * Foreman is running at https://foreman.beckers.local
      Initial credentials are admin / <password>
  * Foreman Proxy is running at https://foreman.beckers.local:8443
  * Puppetmaster is running at port 8140
  The full log is at /var/log/foreman-installer/foreman.log

I would like to help debugging this issue as it currently blocks me from using Foreman 1.11.
As the installer states there is still something at katello.beckers.local now. Visiting the page in my browser I'm greeted by a Passenger error screen saying (I have attached the full Ruby stacktrace as .txt file):

Permission denied @ rb_sysopen - /usr/share/foreman/tmp/cache/websockets_ssl_key20160513-14754-c9wgda (Errno::EACCES)

The directory mentioned in the error message looks like this:

[root@foreman ~]# ls -lisa /usr/share/foreman/tmp/cache/
total 0
50493 0 drwxr-xr-x. 5 foreman foreman 100 May 13 08:52 .
39075 0 drwxr-xr-x. 3 foreman foreman  80 May 13 08:52 ..
48957 0 drwxrwxr-x. 3 foreman foreman  60 May 13 08:52 794
49830 0 drwxr-xr-x. 3 foreman foreman  60 May 13 08:51 7D5
48961 0 drwxrwxr-x. 3 foreman foreman  60 May 13 08:52 7F9
[root@foreman ~]# tree /usr/share/foreman/tmp/cache/
/usr/share/foreman/tmp/cache/
├── 794
│   └── F40
│       └── websockets_ssl_key
├── 7D5
│   └── D00
│       └── template_kind_names
└── 7F9
    └── CE0
        └── websockets_ssl_cert

6 directories, 3 files