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Since yum-plugin-priorities packages is a part of dnf so no need to install otherwise DNF was complain saying no package found. It also maps the same element for CentOS 8. Change-Id: I01198752fc9d0bb532ca1898ab63bc628706a33e Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com> |
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post-install.d | ||
element-deps | ||
package-installs.yaml | ||
pkg-map | ||
README.md |
Install python-heat-agent and enable os-collect-config to run as a system service. By default it will run os-refresh-config on any changes.
Configuration
Heat Metadata can be used to configure os-collect-config:
os-collect-config:
command: os-refresh-config
cachedir: /var/run/os-collect-config
collectors:
- heat_local
- ec2
- cfn
polling_interval: 300
cfn:
metadata_url: http://foo:8000/v1
heat_metadata_hint: /var/lib/heat-cfntools/cfn-metadata-server
stack_name: required-stack-name
access_key_id: abcdefghijklmnop091234
secret_access_key: fffeeeeddddccccaaaa99999
path: ThisResource.Metadata
ca_certificate: /etc/ssl/ca.crt
ec2:
metadata_url: http://169.254.169.254/latest/meta-data
heat_local:
path: /var/lib/heat-cfntools/cfn-init-data
Note that metadata_url
is optional, as it should be determined by the
file heat_metadata_hint
refers to. This file is injected by Heat via
cloud-init at first boot. Those two parameters are the only optional
parameters. All of the others are required for the cfn data source
to function. Note that ca_certificate
is also optional but required
in many cases where the metadata api is behind ssl.
ec2
and heat_local
do not require any configuration to work.
Typically the cfn collector is configured via EC2 metadata in a Heat template:
Resources:
myserver:
Type: OS::Nova::Server
Properties:
...
Metadata:
os-collect-config:
cfn:
access_key_id:
Ref: Key
path: MyServerConfig.Metadata
secret_access_key:
Fn::GetAtt:
- Key
- SecretAccessKey
stack_name:
Ref: AWS::StackName
ca_certificate: /etc/ssl/ca.crt
The EC2 collector takes this metadata, passes it to os-apply-config which in turn writes it out to /etc/os-collect-config.conf.
Note that the configuration references some other resources - a key and access key, which are declared using:
Resources:
Key:
Properties:
UserName:
Ref: User
Type: AWS::IAM::AccessKey
User:
Properties:
Policies:
- Ref: AccessPolicy
Type: AWS::IAM::User
Note also that the IAM::User references an access policy which should look like:
Resources:
AccessPolicy:
Properties:
AllowedResources:
- MyServerConfig
Type: OS::Heat::AccessPolicy
and, finally, the crucial bit is the MyServerConfig policy which is referenced in the cfn collector configuration and the access policy:
Resources:
MyServerConfig:
Metadata:
os-collect-config:
cfn:
access_key_id:
Ref: Key
path: MyServerConfig.Metadata
secret_access_key:
Fn::GetAtt:
- Key
- SecretAccessKey
stack_name:
Ref: AWS::StackName
nova:
...
keystone:
...
Properties:
ImageId: '0'
InstanceType: foo
Type: AWS::AutoScaling::LaunchConfiguration
Essentially, this AutoScaling::LaunchConfiguration resource is a bunch of boilerplate gunk to provide a metadata container from where the os-collect-config cfn collector can pull configuration which will be applied by os-apply-config. There's a os-collect-config section to ensure the configuration from the EC2 metadata doesn't get overwritten. And the rest is dummy values for the LaunchConfiguration's required properties.