Cere Network
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Cere Network
Introduction to Cere DDC
Mainnet
Network details
Testnet
Test Network details
Blockchain Node
Install and update
Start a Node
Become a Validator
Become a Full / Archive Node
Update a Validator Node
Install & Configure Network Time Protocol (NTP) Client
How to fix environment errors
Node logs
Other
DDC Smart Contracts
Intro
How to add DDC Node to the Smart Contract
How to add an Inspector to the Smart Contract
How to configure DDC Inspectors
tools
Cere Explorer
Cere Bridge
Learn
Governance
Staking/Slashing
Treasury
Council
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How to fix environment errors
  1. 1.
    ✘ Please change chain-data folder permission to 777.
    • Add permission to the chain-data folder by following the instructions in the Start a Node section point #2.
  2. 2.
    ✘ Please install NTP Time Server or reconfigure your NTP Time Server.
  3. 3.
    ✘ Please install lsof or open your node port 9944.
    • Install lsof by following the commands:
      sudo apt-get update -y
      sudo apt-get install -y lsof
    • Check docker container opened ports by following the command:docker ps
    • Recreate the docker container by following the instructions in the Start a Node section point #6.
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