livenode | Live-code your NodeJS applications | Runtime Evironment library

by mishoo JavaScript Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | livenode Summary

livenode is a JavaScript library typically used in Telecommunications, Media, Media, Entertainment, Server, Runtime Evironment, Nodejs applications. livenode has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Livenode is a small tool that allows me to evaluate arbitrary statements in a live NodeJS program, without restarting the server. This way I can introduce new functions/variables, or redefine existing ones, and immediately test without losing any context. See my [blog post] and [screencast] I’ve been using it for a week and am quite satisfied with it, but it’s essentially a quick hack and bugs are likely.

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Support

livenode has a low active ecosystem.

It has 43 star(s) with 7 fork(s). There are 5 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of livenode is current.

Quality

livenode has 0 bugs and 0 code smells.

Security

livenode has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

livenode code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

livenode does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

livenode releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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livenode Key Features

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livenode Examples and Code Snippets

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Community Discussions

Trending Discussions on livenode

geth does not persist trie node data from memory to disk on ungraceful system restart

Ethereum geth cannot connect to bootnode to access private ethereum network

QUESTION

geth does not persist trie node data from memory to disk on ungraceful system restart

Asked 2019-Dec-01 at 23:23

Issue: geth 1.8.22 starts mining from one of the first blocks instead of the last one on system reboot.

What we have

We have 3 synced private geth nodes using PoA(clique).

What happened

One day(a week ago) we had issues with our hosting provider so we had to restart 2 out of 3 nodes(each node is on separate VPS). Current block is 4 000 000. When node 1 and node 2 were restarted they started mining from block 372 instead of the last one 4 000 000.

Why it happened (my guess)

Geth 1.8.22 keeps some data with trie node data in RAM instead of a disk. On graceful node shutdown(for example from console) this trie node data is saved to hard drive from RAM. On forced system shutdown(for example from hosting admin panel) trie node data does not have time to be saved on a hard drive. We had our nodes running for 6 months without any reboot so I think that this trie node data was kept in RAM for the whole time and it was vanished on system reboot(though we still have node 3 which is up and running).

Logs

Here are the logs when I'm trying to run the backup version of one of the nodes:

...

ANSWER

Answered 2019-Dec-01 at 23:23

Please check the full answer: https://github.com/ethereum/go-ethereum/issues/20383#issuecomment-558107815

In short:

geth persists data after 1 hour worth of block processing
if your network is super light (i.e. mostly empty blocks), it takes a very very long time until blocks are flushed from memory to hard drive
currently there is no way to configure the period of persistency rounds in geth

Solution: restart geth periodically so it saves data from RAM to hard drive

Source https://stackoverflow.com/questions/58994106

QUESTION

Ethereum geth cannot connect to bootnode to access private ethereum network

Asked 2018-Oct-23 at 13:27

The following docker-compose.yml is used to start an Ethereum geth node, which needs to connect to a bootnode in order to access a private Ethereum network.

...

ANSWER

Answered 2018-Jul-17 at 16:32

It seems that you were using default datadir instead of your private datadir initialized with genesis.json. As the result, geth started as a main network node by using default datadir (see database=/root/.ethereum/geth/chaindata and versions="[63 62]" network=1 in the output).

To boot up your private node, try the following steps:

Initialize your geth datadir with genesis.json. For example:

geth --datadir path/to/custom/data/folder init genesis.json
Start your geth by using the datadir and networkid. For example:

geth --datadir path/to/custom/data/folder --networkid 13377331

Note that these steps use --datadir option.

For more information, see the geth wiki.

Source https://stackoverflow.com/questions/51344478

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install livenode

Just git clone the repository for now and symlink bin/livenode somewhere into your $PATH.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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