-
Notifications
You must be signed in to change notification settings - Fork 2
/
stack4.yaml
197 lines (183 loc) · 6.06 KB
/
stack4.yaml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
heat_template_version: 2014-10-16
description: AutoScaling CentOS 7.1 Web Application
parameters:
image:
type: string
description: Image used for servers
default: CentOS-7-x86_64
key_name:
type: string
description: SSH key to connect to the servers
default: cloudkey1
flavor:
type: string
description: flavor used by the web servers
default: m1.small
network:
type: string
description: Network used by the server
default: 24a88e36-fd6d-446d-8e0c-5edee3b79d1d
subnet_id:
type: string
description: subnet on which the load balancer will be located
default: 70aa7e50-a182-4ac8-a071-d664dda1c297
external_network_id:
type: string
description: UUID of a Neutron external network
default: 9edf95ac-bd78-4988-91d3-b41affaddc11
hostip:
type: string
description: host ip
default: 103.27.200.242
fqdn:
type: string
description: fqdn
default: web.example.com
shortname:
type: string
description: short host name
default: web
resources:
webserver:
type: OS::Heat::AutoScalingGroup
properties:
min_size: 1
max_size: 5
cooldown: 60
desired_capacity: 1
resource:
type: https://raw.githubusercontent.com/thaiopen/privatecloud/master/lb-env.yaml
properties:
flavor: {get_param: flavor}
image: {get_param: image}
key_name: {get_param: key_name}
network: {get_param: network}
pool_id: {get_resource: pool}
metadata: {"metering.stack": {get_param: "OS::stack_id"}}
user_data:
str_replace:
template: |
#!/bin/bash -v
echo root:centos | chpasswd
echo "$hostip $fqdn $shortname" >> /etc/hosts
yum -y install httpd php
systemctl enable httpd
systemctl start httpd
cat <<EOF > /var/www/html/hostname.php
<?php echo "Hello, My name is " . php_uname('n'); ?>
EOF
params:
$hostip: {get_param: hostip}
$fqdn: {get_param: fqdn}
$shortname: {get_param: shortname}
web_server_scaleup_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: {get_resource: webserver}
cooldown: 60
scaling_adjustment: 1
web_server_scaledown_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: {get_resource: webserver}
cooldown: 60
scaling_adjustment: -1
cpu_alarm_high:
type: OS::Ceilometer::Alarm
properties:
description: Scale-up if the average CPU > 50% for 1 minute
meter_name: cpu_util
statistic: avg
period: 60
evaluation_periods: 1
threshold: 50
alarm_actions:
- {get_attr: [web_server_scaleup_policy, alarm_url]}
matching_metadata: {'metadata.user_metadata.stack': {get_param: "OS::stack_id"}}
comparison_operator: gt
cpu_alarm_low:
type: OS::Ceilometer::Alarm
properties:
description: Scale-down if the average CPU < 15% for 1 minutes
meter_name: cpu_util
statistic: avg
period: 60
evaluation_periods: 1
threshold: 15
alarm_actions:
- {get_attr: [web_server_scaledown_policy, alarm_url]}
matching_metadata: {'metadata.user_metadata.stack': {get_param: "OS::stack_id"}}
comparison_operator: lt
monitor:
type: OS::Neutron::HealthMonitor
properties:
type: TCP
delay: 5
max_retries: 5
timeout: 5
pool:
type: OS::Neutron::Pool
properties:
protocol: HTTP
monitors: [{get_resource: monitor}]
subnet_id: {get_param: subnet_id}
lb_method: ROUND_ROBIN
vip:
protocol_port: 80
lb:
type: OS::Neutron::LoadBalancer
properties:
protocol_port: 80
pool_id: {get_resource: pool}
lb_floating:
type: OS::Neutron::FloatingIP
properties:
floating_network_id: {get_param: external_network_id}
port_id: {get_attr: [pool, vip, port_id]}
outputs:
scale_up_url:
description: >
This URL is the webhook to scale up the autoscaling group. You
can invoke the scale-up operation by doing an HTTP POST to this
URL; no body nor extra headers are needed.
value: {get_attr: [web_server_scaleup_policy, alarm_url]}
scale_dn_url:
description: >
This URL is the webhook to scale down the autoscaling group.
You can invoke the scale-down operation by doing an HTTP POST to
this URL; no body nor extra headers are needed.
value: {get_attr: [web_server_scaledown_policy, alarm_url]}
pool_ip_address:
value: {get_attr: [pool, vip, address]}
description: The IP address of the load balancing pool
website_url:
value:
str_replace:
template: http://serviceip/hostname.php
params:
serviceip: { get_attr: [lb_floating, floating_ip_address] }
description: >
This URL is the "external" URL that can be used to access the
website.
ceilometer_query:
value:
str_replace:
template: >
ceilometer statistics -m cpu_util
-q metadata.user_metadata.stack=stackval -p 600 -a avg
params:
stackval: { get_param: "OS::stack_id" }
description: >
This is a Ceilometer query for statistics on the cpu_util meter
Samples about OS::Nova::Server instances in this stack. The -q
parameter selects Samples according to the subject's metadata.
When a VM's metadata includes an item of the form metering.X=Y,
the corresponding Ceilometer resource has a metadata item of the
form user_metadata.X=Y and samples about resources so tagged can
be queried with a Ceilometer query term of the form
metadata.user_metadata.X=Y. In this case the nested stacks give
their VMs metadata that is passed as a nested stack parameter,
and this stack passes a metadata of the form metering.stack=Y,
where Y is this stack's ID.