<p><code>Killed</code> probably means it was killed by the OOM (Out Of Memory) killer. If it was OOM killed, there will be a message in the <code>dmesg</code> output.</p>
<p>Running the <code>node</code> requires at least 8GB and you should have 4G of swap as well.</p>

CC BY-SA 4.0
2022-02-01T13:38:48.847Z
`journalctl -k` around that time stamp is what you'd run to see kernel logs of what was killed.
Samuel Leathers
CC BY-SA 4.0
2022-02-01T03:23:14.753Z
2022-02-01T03:23:14.753Z
Erik de Castro Lopo
<p>My cardano-node is failing, and I'm not sure how to debug or fix it:</p>
<pre><code>NodeToClientV_10    HardForkNodeToClientEnabled HardForkSpecificNodeToClientVersion2 (EraNodeToClientEnabled ByronNodeToClientVersion1 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* Nil)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:44:25.51 UTC] Opened imm db with immutable tip at 1ae2812fe7d76761e9d6f3733fcb8ee9c468040152ae8ad7f58d0527703e443f at slot 51967021 and chunk 2405
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:44:33.05 UTC] Opened vol db
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:25.71 UTC] Replaying ledger from snapshot DiskSnapshot {dsNumber = 51964788, dsSuffix = Nothing} at 8f134f487815d32650107fb04609ad1a7fbab47daaa55d27e6a4b4c3588c705f at slot 51964788
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:26.22 UTC] Replayed block: slot SlotNo 51964807 of At (SlotNo 51967021)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:37.13 UTC] block replay progress (%) = 100.0
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] before next, messages elided = 51964826
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] Replayed block: slot SlotNo 51967021 of At (SlotNo 51967021)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] Opened lgr db
Killed
</code></pre>

CC BY-SA 4.0
2022-02-01T03:34:50.587Z
Yes, it looks like it was out of memory: [102938.126815] Out of memory: Killed process 28026 (cardano-node) total-vm:1074350476kB, anon-rss:7832444kB, file-rss:2160kB, shmem-rss:0kB, UID:1000 pgtables:15576kB oom_score_adj:0
[102938.346596] oom_reaper: reaped process 28026 (cardano-node), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Jeffrey Berthiaume
<cardano-node><node>
Why is my cardano-node not working anymore?
# Why is my cardano-node not working anymore?

(Asked by: username_0 on 2022-02-01)

My cardano-node is failing, and I'm not sure how to debug or fix it:
NodeToClientV_10    HardForkNodeToClientEnabled HardForkSpecificNodeToClientVersion2 (EraNodeToClientEnabled ByronNodeToClientVersion1 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* EraNodeToClientEnabled ShelleyNodeToClientVersion4 :* Nil)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:44:25.51 UTC] Opened imm db with immutable tip at 1ae2812fe7d76761e9d6f3733fcb8ee9c468040152ae8ad7f58d0527703e443f at slot 51967021 and chunk 2405
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:44:33.05 UTC] Opened vol db
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:25.71 UTC] Replaying ledger from snapshot DiskSnapshot {dsNumber = 51964788, dsSuffix = Nothing} at 8f134f487815d32650107fb04609ad1a7fbab47daaa55d27e6a4b4c3588c705f at slot 51964788
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:26.22 UTC] Replayed block: slot SlotNo 51964807 of At (SlotNo 51967021)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:37.13 UTC] block replay progress (%) = 100.0
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] before next, messages elided = 51964826
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] Replayed block: slot SlotNo 51967021 of At (SlotNo 51967021)
[vvv-:cardano.node.ChainDB:Info:5] [2022-02-01 02:45:38.79 UTC] Opened lgr db
Killed

**Tags:** cardano-node, node
> **Comments:**
> **username_0**: Yes, it looks like it was out of memory: [102938.126815] Out of memory: Killed process 28026 (cardano-node) total-vm:1074350476kB, anon-rss:7832444kB, file-rss:2160kB, shmem-rss:0kB, UID:1000 pgtables:15576kB oom_score_adj:0 [102938.346596] oom_reaper: reaped process 28026 (cardano-node), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB  

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## 1 answers

### Answer by username_1 on 2022-02-01. Score: 2 | Accepted answer

`Killed` probably means it was killed by the OOM (Out Of Memory) killer. If it was OOM killed, there will be a message in the `dmesg` output.

Running the `node` requires at least 8GB and you should have 4G of swap as well.

> **Comments:**
> **username_2**: `journalctl -k` around that time stamp is what you'd run to see kernel logs of what was killed.  

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