michaelsproul

Lighthouse: how to fix empty validator_definitions.yml

Lighthouse is affected by a bug (sigp/lighthouse#2159) which can cause the validator_definitions.yml file to become corrupted if the disk where Lighthouse's datadir is stored becomes completely full.

Preventing the bug

The best defense against this bug is to ensure your disk doesn't fill to 100%. If you have been running Geth since December 2020 with a 1TB SSD, you may be close to reaching this limit and we recommend that you:

1. Stop Geth immediately: sudo systemctl stop geth.service (tweak the service name appropriately)
2. [Optional] If you do not already have an Eth1 failover configured, add one to your Lighthouse beacon node config. You can sign up for a free service like Infura or Alchemy and add the URL to the ExecStart line for your Lighthouse beacon node. More info in the book.

michaelsproul

#!/usr/bin/env fish

# Usage: ./participation_rate.fish 3150
# Requires: fish, curl, jq, Lighthouse BN API on port 5052
# Set the target epoch to at least 2 before the current epoch
set target_epoch (math "$argv[1] + 1")

set global_votes (curl --fail --show-error -s "http://localhost:5052/consensus/global_votes?epoch=$target_epoch"; or exit)
set prev_active_gwei (echo $global_votes | jq .previous_epoch_active_gwei)
set prev_attesting_gwei (echo $global_votes | jq .previous_epoch_attesting_gwei)

michaelsproul

#!/usr/bin/env bash

curl -s "http://localhost:5052/beacon/validators/all" \
    | jq -r 'map(select(.validator.slashed == true) | .validator_index) | join("\n")'

michaelsproul

     Running target/release/deps/blst_benches-a4084c38c76b1d19
Gnuplot not found, using plotters backend
verify_multi_aggregate/verify_multi_aggregate/8                                                                             
                        time:   [3.4410 ms 3.4688 ms 3.5025 ms]
                        change: [+4.5451% +5.4146% +6.4445%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  2 (2.00%) high mild
  2 (2.00%) high severe
verify_multi_aggregate/verify_multi_aggregate/16                                                                            

michaelsproul

macro_rules! type_dispatch {
    ($function:ident,
     ($($arg:expr),*),
     $base_ty:ident,
     <$($param_ty:ty),*>,
     [ $value:expr => primitive_type ] $($rest:tt)*) => {
        match $value {
            "bool" => type_dispatch!($function, ($($arg),*), $base_ty, <$($param_ty,)* bool>, $($rest)*),
            "uint8" => type_dispatch!($function, ($($arg),*), $base_ty, <$($param_ty,)* u8>, $($rest)*),
            "uint16" => type_dispatch!($function, ($($arg),*), $base_ty, <$($param_ty,)* u16>, $($rest)*),

michaelsproul

use generic_array::*;
use std::marker::PhantomData;
use typenum::Unsigned;
use typenum::{U1024, U4096, U512, U8192};

type Hash = [u8; 32];
type Crosslink = u64;

trait FixedArray<T> {
    // Not using `std::Default` for brevity.

michaelsproul

IF(EXACT($C12, "Sell"), IF($E12 - $I12 < VLOOKUP($K12, $A$1:$N$146, 5) - SUMIF($H$2:$H11, $H12, $I$2:$I11) - SUMIF($K$2:$K11, $K12, $L$2:$L11), $E12 - $I12, VLOOKUP($K12, $A$1:$N$146, 5) - SUMIF($H$2:$H11, $H12, $I$2:$I11) - SUMIF($K$2:$K11, $K12, $L$2:$L11)), "")

michaelsproul

Note on the Matrix Protocol and Slack Integration

I tried the Riot.im Slack <-> Matrix integration that is available via the "Integrations" icon in Riot.

Setting it up required enabling legacy webhooks:

• https://api.slack.com/custom-integrations/incoming-webhooks
• https://api.slack.com/custom-integrations/outgoing-webhooks

michaelsproul

grep '.type = CDL_' capdl_spec.c | sed 's/.*\(\.type = CDL_[[:alnum:]]*\).*/\1/' | sort | uniq

michaelsproul

ethereum==1.6.1
eth-utils==0.7.1