Description

This is a template to deploy MongoDB to multiple servers configured as a replica set.

This template uses chef-solo to configure the server.

Requirements

A Heat provider that supports the following:
- OS::Heat::ChefSolo
- OS::Heat::RandomString
- OS::Heat::ResourceGroup
- Rackspace::Cloud::Server
- OS::Nova::KeyPair
An OpenStack username, password, and tenant id.
python-heatclient >= v0.2.8:

pip install python-heatclient

We recommend installing the client within a Python virtual environment.

Example Usage

Here is an example of how to deploy this template using the python-heatclient:

heat --os-username <OS-USERNAME> --os-password <OS-PASSWORD> --os-tenant-id \
  <TENANT-ID> --os-auth-url https://identity.api.rackspacecloud.com/v2.0/ \
  stack-create mymongodb -f mongodb-replset.yaml \
  -P peer_server_count=7

For UK customers, use https://lon.identity.api.rackspacecloud.com/v2.0/ as the --os-auth-url.

Optionally, set environmental variables to avoid needing to provide these values every time a call is made:

export OS_USERNAME=<USERNAME>
export OS_PASSWORD=<PASSWORD>
export OS_TENANT_ID=<TENANT-ID>
export OS_AUTH_URL=<AUTH-URL>

Parameters

Parameters can be replaced with your own values when standing up a stack. Use the -P flag to specify a custom parameter.

flavor: Cloud Server size to use for database nodes. (Default: 1GB Performance)
server_hostname: Base hostname for database nodes. (Default: mongodb)
wp_web_server_flavor: Cloud Server size to use on all of the additional web nodes. (Default: 2 GB Performance)
image: Required: Server image used for all servers that are created as a part of this deployment. (Default: Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM))
child_template: Location of the child template to use for the WordPress web servers (Default: https://raw.githubusercontent.com/rackspace-orchestration-templates/mongodb-replset/master/mongodb-replset-peer.yaml)
load_balancer_hostname: Hostname for the Cloud Load Balancer (Default: WordPress-Load-Balancer)
chef_version: Version of chef client to use (Default: 12.3.0)

Outputs

Once a stack comes online, use heat output-list to see all available outputs. Use heat output-show <OUTPUT NAME> to get the value fo a specific output.

private_key: SSH private that can be used to login as root to the server.
server_public_ips: Public IP addresses of the replica set members.

For multi-line values, the response will come in an escaped form. To get rid of the escapes, use echo -e '<STRING>' > file.txt. For vim users, a substitution can be done within a file using %s/\\n/\r/g.

Stack Details

This template installs MongoDB v2.6 on multiple servers configured as a replica set. Replica set members are configured to coordinate via the private interface, and advertise those IPs, so clients will need access to the private network to access multiple nodes automatically. Direct access to a node will work from any internet address.

Contributing

There are substantial changes still happening within the OpenStack Heat project. Template contribution guidelines will be drafted in the near future.

License

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

adampickeral/mongodb-replset