robonomics-collator-role

Ansible role for deploy robonomics collators

Requirements

• Ansible

Preparation

1. Create the folder for this role in the roles/ directory in your Ansible project and clone this repository there:

   $ tree
   .
   ├── inventory.ini
   ├── main.yml
   ├── roles
   └── tasks
   
   $ mkdir roles/robonomics-collator-role
   
   $ git clone [email protected]:dergudzon/robonomics-collator-role.git ./roles/robonomics-collator-role/
   Cloning into './roles/robonomics-collator-role'...
   remote: Enumerating objects: 35, done.
   remote: Counting objects: 100% (35/35), done.
   remote: Compressing objects: 100% (20/20), done.
   remote: Total 35 (delta 8), reused 28 (delta 4), pack-reused 0
   Receiving objects: 100% (35/35), 8.99 KiB | 4.50 MiB/s, done.
   Resolving deltas: 100% (8/8), done.
   
   $ tree
   .
   ├── inventory.ini
   ├── main.yml
   ├── roles
   │   └── robonomics-collator-role
   │       ├── defaults
   │       │   └── main.yml
   │       ├── handlers
   │       │   └── main.yml
   │       ├── LICENSE
   │       ├── README.md
   │       ├── tasks
   │       │   └── main.yml
   │       ├── templates
   │       │   └── robonomics-collator.service.j2
   │       └── vars
   │           └── main.yml.example
   └── tasks
   
   8 directories, 9 files
   
   

2. Add hosts in your inventory. I'll use in-project inventory.ini file in this instruction. Let's name collators hosts group as robonomics-collators. You can use two hosts variables for every host: server-name and target-collators-count: - server-name is using for setting server name prefix in telemetry ("servername" by default) - target-collators-count is using for setting collators count launching on this server (1 by default)

   Example of inventory.ini:

   $ cat inventory.ini 
   [robonomics-collators]
   127.0.0.1 server-name=server1 target-collators-count=4
   127.0.0.2 server-name=server2
   

   Accordingly to this inventory ansible will create 4 collators on host 127.0.0.1 and 1 collator on host 127.0.0.2

3. Set role required variables, use vars/main.yml for this. There is 4 variables you can set:

   • robonomics_version: Version of robonomics, by default "1.0.0"
   • nodename_prefix: Prefix for every node name, by default "robonomics-collator"
   • telemetry_url: Telemetry URL, by default telemetry_url: "wss://telemetry.polkadot.io/submit/ 0"
   • lighthouse_account: Valid SS58 address for rewards, example: "5CGDZ2dpRV3XwYaGi1Nh7oJi4wsn2h1uvMQr7cG3t1aU7FzF". IMPORTANT NOTE! This is required variable and there is no default value!

4. Create .yml file for using role. I'll use main.yml in project root for this:

   $ cat ./main.yml 
   ---
   - hosts: robonomics-collators
     user: root
     roles:
       - robonomics-collator-role
   

Usage

Now you can use role. Use cases (have to launch in project root):

• Create collators accordingly inventory:

ansible-playbook -i ./inventory.ini ./main.yml

Note! If you created previously 5 collators on server, and then changed target-collators-count to 3, than if you launch this command, ansible will remove unecessary collator-4 and collator-5.

• Stop all collators:

ansible-playbook -i ./inventory.ini ./main.yml -t stop

• Start all collators:

ansible-playbook -i ./inventory.ini ./main.yml -t start

• Restart all collators:

ansible-playbook -i ./inventory.ini ./main.yml -t restart

• Stop all collators, remove its parachain dbs and start:

ansible-playbook -i ./inventory.ini ./main.yml -t remove_parachain_db

• Stop all collators, remove its relaychains dbs and start:

ansible-playbook -i ./inventory.ini ./main.yml -t remove_relaychain_db

• Stop all collators, remove its both dbs and start:

ansible-playbook -i ./inventory.ini ./main.yml -t remove_dbs

• Full remove all collators:

ansible-playbook -i ./inventory.ini ./main.yml -t remove