Run Read-Only Node
Validator Parameters
Minimum hardware requirements: AWS EC2 m5.large with 8GB RAM, 2 vCPUs, and at least 300GB of Amazon EBS General Purpose SSD (gp2) storage (or equivalent).
We would recommend going with Ubuntu Server 22.04 LTS (64-bit).
Network Settings
Open up port 22 for SSH, as well as port 7946 for both TCP and UDP traffic. A custom port can be used with "--port <port>" flag when running your Opera node.
Install Required Tools
You are still logged in as the new user via SSH. Now we are going to install Go and Opera.
First, install the required build tools:
Run a Read Node
You can run your read node using go-opera 1.1.3-rc.5 (full sync or snapsync mode).
Validate your Opera installation:
db.preset
When using version 1.1.3, you need to add the db.preset argument (introduced since 1.1.2) to the starting Opera command. You can see options for this parameters with opera help command. For standard conditions, please use this option:
db.preset=ldb-1
You can use different db presets, either --db.preset ldb-1 OR --db.preset legacy-db or --db.preset pbl-1. Note that ldb-1 is recommended.
You can start a node with a syncmode flag. There are two possible options:
"--syncmode snap", and
"--syncmode full" (by default).
For archive node and validator node, you should use full syncmode.