Configuration
The PN configuration is to create a data directory and set up several values in the configuration file kpnd.conf
.
Create a PN Data Directory
Install node key
Install
static-node.json
Configure the PN with
kpnd.conf
.
PN Data Directory Creation
Considering the fact that the size of Klaytn blockchain data is always increased, it is recommended to use a big enough storage. You may need to create the directory on your desired path.
Install Node Key
In order to operate a PN, a nodekey
is required. The KPN binary will create a new one for you if you do not have it. If you have one, you need to put your nodekey
into the PN data directory. The way to create a nodekey
is in the "Before You Install" section. The following command line copies the nodekey
into the PN data directory.
Install static-nodes.json
static-nodes.json
The static-nodes.json
should be created from the PN operator. It contains the addresses that your PN is connected to. It is recommended to add the addresses including your CN and a PN from another Core Cell. Please contact to the Klaytn official email for more details (bootstrap@klaytn.com
for Cypress or baobab@klaytn.com
for Baobab).
static-nodes.json
The node URI of the PN is in the "Before You Install" section. (Note: This IP address is different from CN public IP.) The following command line copies the static-nodes.json
file into the PN data directory.
Update the Configuration File
Configuration File Location:
For the archive distribution, the config directory location defaults to
$INSTALL_PATH/kpn-linux-amd64/conf/
.For the package distribution, the config directory defaults to
/etc/kpnd/conf/
.
Add Data Directory
You should update the data directory environment variable $DATA_DIR
on the configuration file kpnd.conf
.
Fast Sync (Optional)
Each PN maintains a copy of the network's chain data. If a node is out of sync, it can obtain this data from other nodes in the network -- a process known as syncing. When a new PN is first started, it must download the entire chain data from the network.
To accelerate this process, you may perform a fast sync by downloading a snapshot of the chain data before starting the PN. This can dramatically reduce the time the PN will spend syncing on first start.
Download the latest chaindata snapshot from the Cypress snapshot archive or Baobab snapshot archive. Before starting kpnd
, extract the snapshot inside the DATA_DIR you configured in kpnd.conf
.
For example:
Or,
After the data is extracted, you may start the PN normally.
You can refer to detailed information in the Chaindata change
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