Synchronisation failed

[0xZonh]

I upgraded the geth version from v1.12.13 to v1.12.18 today, and then it seems that the blocks cannot be synchronized normally. I'm a newbie and can't figure out where the problem is.

Please let me know if there is a solution for this. Thank you!

[meowsbits]

Hey there @0xZonh, thanks for the report. You're not alone on this, but we have no precise diagnostic or workarounds for now.

See the referenced issue above for further context on (what seems to be) your issue.

And please, if you can include more of your context, it will be helpful to us to better understand the issue; your CLI configuration, any relevant firewall configuration on the host, how long you've been dealing with the problem, etc.

[ziogaschr]

@0xZonh can we also know your location (if allowed to be shared) please, in order we check on a node in the same location as you. It might need more time to find good nodes close to you, and we might be able to find the cause and resolve it easier.

[lixiubao4967]

I also have the above problem, how to solve it? How long does it take to find a peer?
WARN [01-30|17:58:55.238] Synchronisation failed, dropping peer peer=9ab3b037eb1c892569115fb9e97fdc6aa2b8bc5c9a712b1f449cacf53a763dee err=timeout
WARN [01-30|17:59:25.904] Synchronisation failed, retrying err="peer is unknown or unhealthy"
WARN [01-30|17:59:49.244] Synchronisation failed, retrying err="peer is unknown or unhealthy"
WARN [01-30|18:00:00.589] Synchronisation failed, retrying err="peer is unknown or unhealthy"
WARN [01-30|18:00:27.415] Synchronisation failed, retrying err="peer is unknown or unhealthy"
WARN [01-30|18:01:16.414] Synchronisation failed, retrying err="peer is unknown or unhealthy"

[ziogaschr]

Can you please try using these 3 peers (current bootnodes) by hand?

enode://6b6ea53a498f0895c10269a3a74b777286bd467de6425c3b512740fcc7fbc8cd281dca4ab041dd97d62b38f3d0b5b05e71f48d28a3a2f4b5de40fe1f6bf05531@157.245.77.211:30303

enode://16264d48df59c3492972d96bf8a39dd38bab165809a3a4bb161859a337de38b2959cc98efea94355c7a7177cd020867c683aed934dbd6bc937d9e6b61d94d8d9@64.225.0.245:30303

enode://55bbc7f0ffa2af2ceca997ec195a98768144a163d389ae87b808dff8a861618405c2582451bbb6022e429e4bcd6b0e895e86160db6e93cdadbcfd80faacf6f06@164.90.144.106:30303

[lixiubao4967]

It should be that the speed of finding peers is relatively slow. Now it is observed that synchronization has started. Thank you for your reply.

INFO [01-30|22:11:04.058] Syncing: chain download in progress synced=95.82% chain=20.47GiB headers=18,428,891@5.33GiB bodies=18,412,049@12.20GiB receipts=18,412,049@2.94GiB eta=25m36.866s
INFO [01-30|22:11:04.063] Syncing: state healing in progress accounts=0@0.00B slots=0@0.00B codes=0@0.00B nodes=2858@1.06MiB pending=2181
INFO [01-30|22:11:04.135] Loaded most recent local header number=18,426,842 hash=f5e125..ef7d48 td=6,621,534,149,745,222,344,099 age=4mo1d18h
INFO [01-30|22:11:04.135] Loaded most recent local block number=0 hash=d4e567..cb8fa3 td=17,179,869,184 age=54y10mo1w
INFO [01-30|22:11:04.135] Loaded most recent local snap block number=18,412,049 hash=502db0..618035 td=6,593,180,674,639,825,555,472 age=4mo4d1h
INFO [01-30|22:11:04.135] Loaded last snap-sync pivot marker number=19,214,245
WARN [01-30|22:11:04.135] Rolled back chain segment header=18428891->18426842 snap=18412049->18412049 block=0->0 reason="syncing canceled (requested)"
WARN [01-30|22:11:04.135] Synchronisation failed, retrying err="no peers to keep download active"
INFO [01-30|22:11:11.703] Regenerated local transaction journal transactions=0 accounts=0
INFO [01-30|22:11:12.743] Looking for peers peercount=1 tried=42 static=0
INFO [01-30|22:11:23.076] Looking for peers peercount=2 tried=38 static=0
INFO [01-30|22:11:33.265] Looking for peers peercount=2 tried=35 static=0
INFO [01-30|22:11:43.408] Looking for peers peercount=2 tried=36 static=0

[lixiubao4967]

@ziogaschr
How do I specify these three peers?
enode://6b6ea53a498f0895c10269a3a74b777286bd467de6425c3b512740fcc7fbc8cd281dca4ab041dd97d62b38f3d0b5b05e71f48d28a3a2f4b5de40fe1f6bf05531@157.245.77.211:30303

enode://16264d48df59c3492972d96bf8a39dd38bab165809a3a4bb161859a337de38b2959cc98efea94355c7a7177cd020867c683aed934dbd6bc937d9e6b61d94d8d9@64.225.0.245:30303

enode://55bbc7f0ffa2af2ceca997ec195a98768144a163d389ae87b808dff8a861618405c2582451bbb6022e429e4bcd6b0e895e86160db6e93cdadbcfd80faacf6f06@164.90.144.106:30303

[ziogaschr]

If you started core-geth with console command, like geth --classic console then you can type there admin.addPeer('enode://6b6ea53a498f0895c10269a3a74b777286bd467de6425c3b512740fcc7fbc8cd281dca4ab041dd97d62b38f3d0b5b05e71f48d28a3a2f4b5de40fe1f6bf05531@157.245.77.211:30303').
If you use JSON RPC APIs and you have admin API open (which is not advised), then you can use https://etclabscore.github.io/core-geth/JSON-RPC-API/modules/admin/#admin_addpeer

[jakubartur]

me the same no sync , look number=19,218,133 hash=d66d06..7f6820 td=8,164,776,887,095,361,374,446 age=7h58m44s
7h+ no sync fix

admin.addPeer('enode://55bbc7f0ffa2af2ceca997ec195a98768144a163d389ae87b808dff8a861618405c2582451bbb6022e429e4bcd6b0e895e86160db6e93cdadbcfd80faacf6f06@164.90.144.106:30303')
true
admin.addPeer('enode://16264d48df59c3492972d96bf8a39dd38bab165809a3a4bb161859a337de38b2959cc98efea94355c7a7177cd020867c683aed934dbd6bc937d9e6b61d94d8d9@64.225.0.245:30303')
true
admin.addPeer('enode://16264d48df59c3492972d96bf8a39dd38bab165809a3a4bb161859a337de38b2959cc98efea94355c7a7177cd020867c683aed934dbd6bc937d9e6b61d94d8d9@64.225.0.245:30303')
true
Looking for peers peercount=0 tried=57 static=2
bootnodes limit 50 peers no open slots conect ??

I suggest you do something similar to what I did, please check the link https://enode.redecoin.eu/

[jakubartur]

INFO [01-31|12:42:46.138] Block synchronisation started
INFO [01-31|12:42:54.157] Looking for peers peercount=1 tried=55 static=3
INFO [01-31|12:43:04.280] Looking for peers peercount=0 tried=51 static=3
INFO [01-31|12:43:14.466] Looking for peers peercount=0 tried=37 static=3
INFO [01-31|12:43:24.607] Looking for peers peercount=0 tried=51 static=3
INFO [01-31|12:43:34.686] Looking for peers peercount=1 tried=60 static=3
INFO [01-31|12:43:44.799] Looking for peers peercount=1 tried=47 static=3
WARN [01-31|12:43:46.138] Synchronisation failed, dropping peer peer=5d1706ab63f92532c709f6c611b6c0f0e508d5f328be9615c689896280bdb328 err=timeout

bootnode problem conect

[ziogaschr]

Once this new release https://github.com/etclabscore/core-geth/releases/tag/v1.12.19 is being used on more nodes in the network, we will probably not have more peering issues. Please update yourselfs.