Keep Track of Syncing Speed
t=2021-05-13T17:17:17+0800 lvl=info msg="Imported new chain segment" blocks=11 txs=3701 mgas=482.461 elapsed=8.075s mgasps=59.744 number=7,355,800 hash=0x84e085b1cd5b1ad4f9a954e2f660704c8375a80f04326395536eedf83363942f age=12h38m32s dirty="583.73 MiB" t=2021-05-13T17:17:20+0800 lvl=info msg="Deep froze chain segment" blocks=117 elapsed=263.497ms number=7,265,806 hash=0x7602f6b960b4092d39ff49781c64404a047e2c78bc166f071ee8714020c39b2e t=2021-05-13T17:17:25+0800 lvl=info msg="Imported new chain segment" blocks=17 txs=5025 mgas=740.885 elapsed=8.125s mgasps=91.177 number=7,355,817 hash=0xde7a2a76ff7b38414acf3b360bb427d2d0b7dd1f8fe2afe2ffd59d64b237a81b age=12h37m49s dirty="594.65 MiB" t=2021-05-13T17:17:33+0800 lvl=info msg="Imported new chain segment" blocks=18 txs=5108 mgas=748.016 elapsed=8.354s mgasps=89.535 number=7,355,835 hash=0x757c476f9fe30fc6ef001fb4a03fa991843cf3ed271f21cfc01a9bba5e5eff98 age=12h37m3s dirty="604.39 MiB" t=2021-05-13T17:17:42+0800 lvl=info msg="Imported new chain segment" blocks=18 txs=5612 mgas=799.778 elapsed=8.260s mgasps=96.815 number=7,355,853 hash=0x73e87742ef4405ffefec987fc4b8b19e69c54b8f914c27ea69a502fae4d735e0 age=12h36m18s dirty="613.03 MiB"
Your syncing speed is
mgasps. The value should be around 100.
If you are syncing slowly, please check the speed of your disk.
Use Chaindata Snapshot
Please download the chain data snapshot and extract to your home folder to speed up
Store your BNB with a hardware wallet
The most valuable assets of a validator are two keys: one for signing transactions and another for signing blocks
Securing your fullnode RPC from hackers
Please do not expose your RPC endpoints to public network.
Account Private keys
To protect your BNB, do not share your 24 words with anyone. The only person who should ever need to know them is you. In short, HSMs are affordable, performant and portable pieces of hardware that help to securely generate, store and manage your private keys. Malware attacks and remote extraction of private keys are much more difficult when an HSM is configured properly.
To protect your BNB, you should only download software directly from official sources, and make sure that you're always using the latest, most secure version
Running Server as a Daemon
It is important to keep
geth running at all times. There are several ways to achieve this, and the simplest solution we recommend is to register
geth as a systemd service so that it will automatically get started upon system reboots and other events.
Set up a backup node
- Run validator node in archive mode
- Shut down nodes gracefully
- Active monitoring with tools
Steps to run a backup node
- Install the latest version of geth
- Sync to the latest height using fast sync mode. You can either download the latest snapshot or start fast sync once your node is fully synced
- Shut down your node gracefully kill -HUP $(pgrep geth)
- Restart your node with
Why node will be offline for a while after restart? or What will happen if client been force killed
After running (synchronized) for a long period of time and being abruptly terminated, only archived nodes are expected to quickly re-synchronize upon restart.
Steps to reproduce:
- Run the node synchronized for a period of time.
- Abruptly kill the node (kill -9 or system crash).
- Restart the node, observe where it resynchronizes from block height 1 hour ago.
If Geth crashes (or is not shut down gracefully), the recent state held in memory is lost and needs to be regenerated. It takes Geth a long time to restore the states.
The root reason is that
geth does flush the state trie periodically. The period is defined as
How to upgrade a backup node to become a validator node?
You can stop mining new blocks by sending commands in
Connect to your validator node with
geth attach ipc:path/to/geth.ipc
Then, let backup node resume validating ,