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##############################################################################
# Copyright (c) 2016 Ericsson AB and others.
# peter.barabas@ericsson.com
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
======== TEMPLATING SUPPORT IN YAML CONFIGURATION FILES ========
deploy/templater.py makes it possible to use templates to generate configuration
files. It takes 2 input YAML files and an output file as arguments. One being
the dictionary (called the base file), which is used to look up values in; the
other file is the template, where the substitution will take place. Templater
will write the result to an output file, specified as the 3rd argument.
======== SYNTAX OF TEMPLATE FILES ========
A template file can contain any valid YAML data and template variables, whose
syntax is described below:
1. Single value references
%{title}
%{environment/net_segment_type}
Either a root element, or a path can be specified.
2. YAML sections
%{nodes}
%{network/networking_parameters}
Either a root element, or a path can be specified.
3. Interface lookup for network
%{interface(storage)}
Specify a network type as argument to interface().
4. Interface lookup for network and role
%{interface(public,compute)}
Specify a network type and a role as arguments to interface().
======== EXAMPLES ========
Base YAML file (excerpt):
title: Deployment Environment Adapter (DEA)
version: 1.1
created: Wed Mar 30 08:16:04 2016
environment:
name: vCity
net_segment_type: tun
wanted_release: Liberty on Ubuntu 14.04
nodes:
- id: 1
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 2
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 3
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 4
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
- id: 5
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
- id: 6
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
interfaces_1:
ens3:
- fuelweb_admin
- management
ens4:
- storage
ens5:
- private
ens6:
- public
interfaces_2:
ens3:
- fuelweb_admin
- management
ens4:
- storage
- private
- public
network:
networks:
- cidr: 172.16.0.0/24
gateway: 172.16.0.1
ip_ranges:
- - 172.16.0.2
- 172.16.0.126
meta:
cidr: 172.16.0.0/24
configurable: true
floating_range_var: floating_ranges
ip_range:
- 172.16.0.2
- 172.16.0.126
map_priority: 1
name: public
notation: ip_ranges
render_addr_mask: public
render_type: null
use_gateway: true
vips:
- haproxy
- vrouter
vlan_start: null
name: public
vlan_start: null
- cidr: 192.168.1.0/24
gateway: null
ip_ranges:
- - 192.168.1.1
- 192.168.1.254
meta:
cidr: 192.168.1.0/24
configurable: true
map_priority: 2
name: storage
notation: cidr
render_addr_mask: storage
render_type: cidr
use_gateway: false
vlan_start: 102
name: storage
vlan_start: 102
--- Example 1 ---
Template file:
deployment-scenario-metadata:
title: %{title}
version: 0.1
dea-override-config:
environment:
net_segment_type: %{environment/net_segment_type}
nodes:
%{nodes}
Result:
deployment-scenario-metadata:
title: Deployment Environment Adapter (DEA)
version: 0.1
dea-override-config:
environment:
net_segment_type: tun
nodes:
- id: 1
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 2
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 3
interfaces: interfaces_1
role: ceph-osd,compute
transformations: transformations_1
- id: 4
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
- id: 5
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
- id: 6
interfaces: interfaces_2
role: controller,mongo
transformations: transformations_2
--- Example 2 ---
Template file:
dea-override-config:
network:
networks:
%{network/networks}
Result:
dea-override-config:
network:
networks:
- cidr: 172.16.0.0/24
gateway: 172.16.0.1
ip_ranges:
- - 172.16.0.2
- 172.16.0.126
meta:
cidr: 172.16.0.0/24
configurable: true
floating_range_var: floating_ranges
ip_range:
- 172.16.0.2
- 172.16.0.126
map_priority: 1
name: public
notation: ip_ranges
render_addr_mask: public
render_type: null
use_gateway: true
vips:
- haproxy
- vrouter
vlan_start: null
name: public
vlan_start: null
- cidr: 192.168.1.0/24
gateway: null
ip_ranges:
- - 192.168.1.1
- 192.168.1.254
meta:
cidr: 192.168.1.0/24
configurable: true
map_priority: 2
name: storage
notation: cidr
render_addr_mask: storage
render_type: cidr
use_gateway: false
vlan_start: 102
name: storage
vlan_start: 102
--- Example 3 ---
Template file:
storage_if: %{interface(storage)}
compute_private_if: %{interface(private,compute)}
# Management interface of a mongo node
mongo_mgmt_if: %{interface(management,mongo)}
controller_private_if: %{interface(private,controller)}
Result:
storage_if: ens4
compute_private_if: ens5
# Management interface of a mongo node
mongo_mgmt_if: ens3
controller_private_if: ens4
|
