163 lines
5.3 KiB
Markdown
163 lines
5.3 KiB
Markdown
# Integration between nimbus-eth1 and Ethereum [Hive](https://github.com/ethereum/hive) test environment
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This is a short manual to help you quickly setup and run
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Hive. For more detailed information please read the
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[hive documentation](https://github.com/ethereum/hive/blob/master/docs/overview.md).
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## Prerequisities
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- A Linux machine. Trust me, it does not work on Windows or MacOS.
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- Or Linux inside a VM (e.g. VirtualBox) on Windows or MacOS.
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- Docker installed and working in your Linux.
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- Go compiler installed in your Linux.
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- Go must be version 1.16 or later.
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## Practicalities
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Practically, if using an Ubuntu Linux and you want to use the version of Go
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shipped with Ubuntu, you will need Ubuntu 21.04 or later. It's enough to run
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`apt-get install golang`.
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If using Ubuntu 20.04 LTS (likely because it's the long-term stable version),
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the shipped Go isn't recent enough, and there will be build errors. You can
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either install a non-Ubuntu packaged version of Go (maybe from
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[`golang.org`](https://golang.org/), or use a more recent Ubuntu.
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If you want to run Hive in a Linux container, you will need Docker to work in
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the container because Hive calls Docker (a lot!). This is sometimes called
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"Docker in Docker". Inside LXD containers, Docker doesn't work by default, but
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usually this is remedied by setting the container flag `lxc config set
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$CONTAINER_NAME security.nesting true`, which takes effect immediately.
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## Building hive
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First you will need a working Go installation, Go 1.16 or later. Then:
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```bash
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git clone https://github.com/ethereum/hive
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cd ./hive
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go build .
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```
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# How to run hive
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First copy the `nimbus-eth1/hive_intgration/nimbus` folder (from this repo)
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into the `hive/clients` folder (in the `hive` repo).
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Then run this command:
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```
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./hive --sim <simulation> --client <client(s) you want to test against>
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```
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Examples:
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```bash
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./hive --sim ethereum/consensus --client nimbus
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```
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or
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```bash
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./hive --sim devp2p/discv4 --client go-ethereum,openethereum,nimbus
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```
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## Available test suites / simulators
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- `devp2p/eth` -> require at least 2 clients
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- `devp2p/discv4`
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- `ethereum/sync`
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- `ethereum/consensus`
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- `ethereum/rpc`
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- `ethereum/graphql`
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- `smoke/network`
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- `smoke/genesis`
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- `smoke/clique`
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The number of passes and fails output at the time of writing (2021-05-20) is:
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ethereum/consensus: 47951 pass, 0 fail, 47951 total London
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ethereum/graphql: 40 pass, 6 fail, 46 total
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devp2p/discv4: 3 pass, 11 fail, 14 total
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devp2p/eth: 1 pass, 8 fail, 9 total
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ethereum/rpc: 3 pass, 35 fail, 38 total
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ethereum/sync: 2 pass, 2 fail, 4 total
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smoke/genesis: 3 pass, 0 fail, 3 total
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smoke/network: 1 pass, 0 fail, 1 total
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smoke/clique: 1 pass, 0 fail, 1 total
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## Nim simulators without docker
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We have rewrite some of the hive simulators in Nim to aid debugging.
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It is assumed you already install nimbus dependencies via nimble.
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In the future, we will provide more instructions how to run these
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simulators using local dependencies.
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On Windows you might need to add `-d:disable_libbacktrace` compiler switch.
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Working directory is nimbus-eth1 root directory. And you can see the result
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in a markdown file with the same name with the simulator.
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- ethereum/consensus
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```nim
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nim c -r -d:release hive_integration/nodocker/consensus/consensus_sim
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```
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Note that this progam expects the _./tests_ directory accessible. So if
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you compile from the _hive_integration/nodocker_ directory on a Posix
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system,, the _./tests_ directory would be a symlink to _../../tests_.
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- ethereum/graphql
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```nim
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nim c -r -d:release hive_integration/nodocker/graphql/graphql_sim
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```
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Similar to above, the directory _./hive_integration_ is expeced.
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## Observations when working with hive/docker
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### DNS problems with hive simulation container running alpine OS
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* Problem:<br>
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_hive_ bails out with error when compiling docker compile because
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it cannot resolve some domain name like _github.com_. It occured with
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a locally running DNS resolver (as opposed to a proxy type resolver.)
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* Solution:<br>
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+ First solution (may be undesirable):
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Change local nameserver entry in /etc/resolv.conf to something like
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nameserver 8.8.8.8
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Note that docker always copies the host's /etc/resolv.conf to the
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container one before it executes a _RUN_ directive.
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+ Second solution (tedious):
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In the _Dockerfile_, prefix all affected _RUN_ directives with the text:
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echo nameserver 8.8.8.8 > /etc/resolv.conf;
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### Peek into nimbus container before it finalises
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* In the nimbus _Dockerfile_ before _ENTRYPOINT_, add the directive
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RUN mknod /tmp/wait-for-stop p;cat /tmp/wait-for-stop
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* (Re-)Build the container with the command:
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./hive --docker.output ...
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* When the building process hangs at the
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RUN mknod ...
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directive, then use the _./docker-shell_ script to enter the running top
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docker container
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* Useful commands after entering the nimbus container<br>
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apt udate
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apt install iproute2 procps vim openssh-client strace
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* Resume hive installation & processing:<br>
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In the nimbus container run
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echo > /tmp/wait-for-stop
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