02b__create_mongodb_cluster.yml.md
The source files for this tutorial can be downloaded from its GitHub repository, or cloned into your current working directory using the command git clone https://github.com/ionos-cloud/module-ansible.git
before changing into the module-ansible/docs/tutorials/09__a_quick_introduction_to_dbaas
sub-directory.
01__create_jumpbox_and_nlb.yml
---
- hosts: localhost
connection: local
gather_facts: false
vars_files:
- ../vars.yml
- vars.yml
tasks:
# =======================================================================
- name: Get information about the LANs in '{{ datacenter_name }}'
ionoscloudsdk.ionoscloud.lan_info:
datacenter: "{{ datacenter_name }}"
register: lan_info_response
- name: Set the fact 'internal_lan' based on the above
ansible.builtin.set_fact:
internal_lan: "{{ (lan_info_response | json_query(query))[0] }}"
vars:
query: "lans[?properties.name=='{{ lan.name }}']"
- name: Get information about our reserved IP Blocks
ionoscloudsdk.ionoscloud.ipblock_info:
filters: "{ 'properties.name': 'IP Block for {{ datacenter_name }}' }"
register: ipblock_info_response
when: ENABLE_EXPLICITLY_UNSUPPORTED_CONFIGURATIONS
- name: Set 'ip_block' based on the above
ansible.builtin.set_fact:
ip_block: "{{ ipblock_info_response.ipblocks[0].properties.ips }}"
when: ENABLE_EXPLICITLY_UNSUPPORTED_CONFIGURATIONS
- name: Get information about the servers in our data center
ionoscloudsdk.ionoscloud.server_info:
datacenter: "{{ datacenter_name }}"
depth: 5
register: get_server_response
- name: Retrieve the object describing the jumpbox
ansible.builtin.set_fact:
desired_server_info__query: "{{ get_server_response | json_query(query) }}"
vars:
query: "servers[?properties.name=='{{ server_config['jumpbox'].name }}']"
- name: Retrieve the jumpbox's public IP
ansible.builtin.set_fact:
jumpbox_ip: "{{ (desired_server_info__query[0] | json_query(query))[0] }}"
vars:
query: "entities.nics.items[?properties.name!='{{ server_config['jumpbox'].name }}.eth1'].properties.ips[]"
# =======================================================================
# See https://docs.ionos.com/ansible/api/compute-engine/cube_template
- name: Retrieve the cluster template for '{{ dbaas_config.mongodb_cluster.template }}'
ionoscloudsdk.ionoscloud.mongo_cluster_template_info:
filters: "{ 'properties.name': '{{ dbaas_config.mongodb_cluster.template }}' }"
register: template_list
# =======================================================================
# See https://docs.ionos.com/ansible/api/dbaas-mongo/mongo_cluster_template_info
- name: Create MongoDB Cluster
ionoscloudsdk.ionoscloud.mongo_cluster:
mongo_db_version: "{{ dbaas_config.mongodb_cluster.version }}"
instances: 1
template_id: "{{ template_list.mongo_cluster_templates[0].id }}"
location: "{{ location }}"
connections:
- cidr_list:
- "{{ dbaas_config.mongodb_cluster.ip }}/24"
datacenter: "{{ datacenter_name }}"
lan: "{{ internal_lan.id }}"
display_name: "MongoDB Cluster for {{ datacenter_name }}"
wait: true
wait_timeout: "{{ wait_timeout }}"
register: mongodb_cluster_response
- name: Extract MongoDB Cluster hostname
ansible.builtin.set_fact:
cluster_hostname: "{{ mongodb_cluster_response.mongo_cluster.properties.connection_string | regex_replace('^(.*)://(.*)$', '\\2') }}"
- name: Create Cluster User
ionoscloudsdk.ionoscloud.mongo_cluster_user:
mongo_cluster: "{{ mongodb_cluster_response.mongo_cluster.id }}"
mongo_username: dbadmin
mongo_password: "{{ default_password }}"
user_roles:
- role: readWrite
database: test
register: mongo_user_response
# =======================================================================
# Note that, instead of {{ dbaas_config.mongodb_cluster.ip }} in the SSH
# command below, one _could_ try to use the hostname contained in
# {{ mongodb_cluster_response.mongo_cluster.properties.connection_string }}
# but given that this uses the mongodb+srv protocol, one would need to
# first query the corresponding SRV record, then the hostname returned
# by said query. E.g.
# $ dig +short _mongodb._tcp.m-hq5v594hxxxxxxxx.mongodb.gb-lhr.ionos.com srv
# 10 1 27017 r1.m-hq5v594hxxxxxxxx.mongodb.gb-lhr.ionos.com.
# $ dig +short r1.m-hq5v594hxxxxxxxx.mongodb.gb-lhr.ionos.com
# 192.168.8.17
- name: Print usage information
ansible.builtin.debug:
msg:
- "The MongoDB cluster {{ cluster_hostname }} has been created"
- "To access it, use one of the following commands:"
- " From the jumpbox:"
- " mongosh {{ mongodb_cluster_response.mongo_cluster.properties.connection_string }} --username dbadmin"
- " Externally via the jumpbox:"
- " In one shell: ssh -L 27017:{{ dbaas_config.mongodb_cluster.ip }}:27017 root@{{ jumpbox_ip }}"
- " In another shell: mongosh 'mongodb://dbadmin@localhost?tls=true&tlsAllowInvalidHostnames=true'"
- "
<div data-gb-custom-block data-tag="if"> Externally via the NLB:</div>"
- "<div data-gb-custom-block data-tag="if"> mongosh 'mongodb://dbadmin@{{ ip_block[0] }}?tls=true&tlsAllowInvalidHostnames=true'</div>
"
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