first commit

README.md

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+#
+
+```
+cd /var/www/html
+curl -O https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.3/4.3.0/rhcos-4.3.0-x86_64-metal.raw.gz
+curl -O https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.3/4.3.0/rhcos-4.3.0-x86_64-installer-kernel
+curl -O https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.3/4.3.0/rhcos-4.3.0-x86_64-installer-initramfs.img
+```

defaults/main.yml

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+os4_pxe_install_server_address: ""
+os4_pxe_install_server_gateway: ""
+os4_pxe_install_server_netmask: ""
+os4_pxe_install_server_domain_name: ""
+os4_pxe_install_server_nameserver: ""
+os4_pxe_install_server_clients: []
+os4_pxe_install_server_firewalld_configure: yes
+os4_pxe_install_server_firewalld_zone: public
+os4_pxe_install_server_httpd_port: 80

handlers/main.yml

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+- name: Restart dhcpd
+  service:
+    name: dhcpd
+    state: restarted

tasks/firewalld.yml

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+- name: Ensure firewalld is enabled
+  service:
+    name: firewalld
+    enabled: true
+    state: started
+
+- name: Open firewalld ports
+  firewalld:
+    port: "{{ item }}"
+    state: enabled
+    zone: "{{ os4_pxe_install_server_firewalld_zone }}"
+    immediate: yes
+    permanent: yes
+  loop:
+    - "{{ os4_pxe_install_server_httpd_port }}/tcp"
+    - "69/tcp"
+    - "69/udp"

tasks/main.yml

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+- name: Install packages
+  yum:
+    name: ["dhcp-server", "syslinux", "tftp", "tftp-server", "xinetd", "httpd"]
+
+- name: dhcpd configuration
+  template:
+    src: dhcpd.conf.j2
+    dest: /etc/dhcp/dhcpd.conf
+  notify: Restart dhcpd
+
+- name: tftp configuration
+  template:
+    src: tftp.j2
+    dest: /etc/xinetd.d/tftp
+
+- name: tftpboot directory
+  file:
+    name: /var/lib/tftpboot/pxelinux.cfg
+    state: directory
+
+- name: syslinux files
+  file:
+    state: hard
+    src: "/usr/share/syslinux/{{ item }}"
+    dest: "/var/lib/tftpboot/{{ item }}"
+  loop: ["pxelinux.0", "ldlinux.c32"]
+
+- name: tftpboot configuration
+  template:
+    src: pxelinux.cfg-default.j2
+    dest: "/var/lib/tftpboot/pxelinux.cfg/{{ item.ip | ip4_hex | upper}}"
+  loop: "{{ os4_pxe_install_server_clients }}"
+
+- name: dhcpd service
+  service:
+    name: dhcpd
+    state: started
+    enabled: yes
+
+- name: httpd service
+  service:
+    name: httpd
+    state: started
+    enabled: yes
+
+- name: xinetd service
+  service:
+    name: xinetd
+    state: started
+    enabled: yes
+
+- name: Configure firewalld
+  import_tasks: firewalld.yml
+  when: os4_pxe_install_server_firewalld_configure

templates/dhcpd.conf.j2

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+subnet {{ os4_pxe_install_server_address | ipaddr('network') }} netmask {{ os4_pxe_install_server_address | ipaddr('netmask') }} {
+  option domain-name-servers {{ os4_pxe_install_server_nameserver }};
+  option domain-name "ocp01.lab.vargen.io";
+  option routers {{ os4_pxe_install_server_gateway }};
+  option broadcast-address {{ os4_pxe_install_server_address | ipaddr('broadcast') }};
+
+  next-server {{ os4_pxe_install_server_address | ipaddr('address') }};
+  filename "pxelinux.0";
+
+  {% for host in os4_pxe_install_server_clients -%}
+
+  host {{ host.hostname }} {
+    hardware ethernet {{ host.mac | upper }};
+    option host-name "{{ host.hostname }}";
+    fixed-address {{ host.ip }};
+  }
+
+  {% endfor %}
+
+}

templates/pxelinux.cfg-default.j2

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+DEFAULT pxeboot
+TIMEOUT 20
+PROMPT 0
+LABEL pxeboot
+  KERNEL http://{{ os4_pxe_install_server_address | ipaddr('address') }}:{{ os4_pxe_install_server_httpd_port }}/rhcos-4.3.0-x86_64-installer-kernel
+  APPEND ip=dhcp rd.neednet=1 initrd=http://{{ os4_pxe_install_server_address | ipaddr('address') }}:{{ os4_pxe_install_server_httpd_port }}/rhcos-4.3.0-x86_64-installer-initramfs.img console=tty0 console=ttyS0 coreos.inst=yes coreos.inst.install_dev=vda coreos.inst.image_url=http://{{ os4_pxe_install_server_address | ipaddr('address') }}:{{ os4_pxe_install_server_httpd_port }}/rhcos-4.3.0-x86_64-metal.raw.gz coreos.inst.ignition_url=http://{{ os4_pxe_install_server_address | ipaddr('address') }}:{{ os4_pxe_install_server_httpd_port }}/{{ item.ignition }}

templates/tftp.j2

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+service tftp
+{
+ socket_type = dgram
+ protocol    = udp
+ wait        = yes
+ user        = root
+ server      = /usr/sbin/in.tftpd
+ server_args = -s /var/lib/tftpboot
+ disable     = no
+ per_source  = 11
+ cps         = 100 2
+ flags       = IPv4
+}