remove tool README's to put in tendermint docs

7 years ago · f1ae1ec8f9
--- a/ansible/README.md
+++ b/ansible/README.md
@ -1,202 +0,0 @@
 # Ansible playbook for Tendermint applications

 ![Ansible plus Tendermint](img/a_plus_t.png)

 * [Prerequisites](#Prerequisites)
 * [Ansible setup](#Ansible setup)
 * [Running the playbook](#Running the playbook)

 The playbooks in this folder run [ansible](http://www.ansible.com/) roles which:

 * install and configure basecoin or ethermint
 * start/stop basecoin or ethermint and reset their configuration

 ## Prerequisites

 * Ansible 2.0 or higher
 * SSH key to the servers

 Optional for DigitalOcean droplets:
 * DigitalOcean API Token
 * python dopy package

 Head over to the [Terraform folder](https://github.com/tendermint/tools/tree/master/terraform-digitalocean) for a description on how to get a DigitalOcean API Token.

 Optional for Amazon AWS instances:
 * Amazon AWS API access key ID and secret access key.

 The cloud inventory scripts come from the ansible team at their [GitHub](https://github.com/ansible/ansible) page. You can get the latest version from the contrib/inventory folder.

 ## Ansible setup

 Ansible requires a "command machine" or "local machine" or "orchestrator machine" to run on. This can be your laptop or any machine that can run ansible. (It does not have to be part of the cloud network that hosts your servers.)

 Use the official [Ansible installation guide](http://docs.ansible.com/ansible/intro_installation.html) to install Ansible. Here are a few examples on basic installation commands:

 Ubuntu/Debian:
 ```
 sudo apt-get install ansible
 ```

 CentOS/RedHat:
 ```
 sudo yum install epel-release
 sudo yum install ansible
 ```

 Mac OSX:
 If you have (Homebrew)[https://brew.sh] installed, then it's simply
 ```
 brew install ansible
 ```

 If not, you can install it using `pip`:
 ```
 sudo easy_install pip
 sudo pip install ansible
 ```


 To make life easier, you can start an SSH Agent and load your SSH key(s). This way ansible will have an uninterrupted way of connecting to your servers.

 ```
 ssh-agent > ~/.ssh/ssh.env
 source ~/.ssh/ssh.env

 ssh-add private.key
 ```

 Subsequently, as long as the agent is running, you can use `source ~/.ssh/ssh.env` to load the keys to the current session.
 Note: On Mac OSX, you can add the `-K` option to ssh-add to store the passphrase in your keychain. The security of this feature is debated but it is convenient.

 ### Optional cloud dependencies

 If you are using a cloud provider to host your servers, you need the below dependencies installed on your local machine.

 #### DigitalOcean inventory dependencies:

 Ubuntu/Debian:
 ```
 sudo apt-get install python-pip
 sudo pip install dopy
 ```

 CentOS/RedHat:
 ```
 sudo yum install python-pip
 sudo pip install dopy
 ```

 Mac OSX:
 ```
 sudo pip install dopy
 ```

 #### Amazon AWS inventory dependencies:

 Ubuntu/Debian:
 ```
 sudo apt-get install python-boto
 ```

 CentOS/RedHat:
 ```
 sudo yum install python-boto
 ```

 Mac OSX:
 ```
 sudo pip install boto
 ```

 ## Refreshing the DigitalOcean inventory

 If you just finished creating droplets, the local DigitalOcean inventory cache is not up-to-date. To refresh it, run:

 ```
 DO_API_TOKEN="<The API token received from DigitalOcean>"
 python -u inventory/digital_ocean.py --refresh-cache 1> /dev/null
 ```

 ## Refreshing the Amazon AWS inventory

 If you just finished creating Amazon AWS EC2 instances, the local AWS inventory cache is not up-to-date. To refresh it, run:

 ```
 AWS_ACCESS_KEY_ID='<The API access key ID received from Amazon>'
 AWS_SECRET_ACCESS_KEY='<The API secret access key received from Amazon>'
 python -u inventory/ec2.py --refresh-cache 1> /dev/null
 ```

 Note: you don't need the access key and secret key set, if you are running ansible on an Amazon AMI instance with the proper IAM permissions set.

 ## Running the playbooks

 The playbooks are locked down to only run if the environment variable `TF_VAR_TESTNET_NAME` is populated. This is a precaution so you don't accidentally run the playbook on all your servers.

 The variable `TF_VAR_TESTNET_NAME` contains the testnet name which ansible translates into an ansible group. If you used Terraform to create the servers, it was the testnet name used there.

 If the playbook cannot connect to the servers because of public key denial, your SSH Agent is not set up properly. Alternatively you can add the SSH key to ansible using the `--private-key` option.

 If you need to connect to the nodes as root but your local username is different, use the ansible option `-u root` to tell ansible to connect to the servers and authenticate as the root user.

 If you secured your server and you need to `sudo` for root access, use the the `-b` or `--become` option to tell ansible to sudo to root after connecting to the server. In the Terraform-DigitalOcean example, if you created the ec2-user by adding the `noroot=true` option (or if you are simply on Amazon AWS), you need to add the options `-u ec2-user -b` to ansible to tell it to connect as the ec2-user and then sudo to root to run the playbook.

 ### DigitalOcean
 ```
 DO_API_TOKEN="<The API token received from DigitalOcean>"
 TF_VAR_TESTNET_NAME="testnet-servers"
 ansible-playbook -i inventory/digital_ocean.py install.yml -e service=basecoin
 ```

 ### Amazon AWS
 ```
 AWS_ACCESS_KEY_ID='<The API access key ID received from Amazon>'
 AWS_SECRET_ACCESS_KEY='<The API secret access key received from Amazon>'
 TF_VAR_TESTNET_NAME="testnet-servers"
 ansible-playbook -i inventory/ec2.py install.yml -e service=basecoin
 ```

 ### Installing custom versions

 By default ansible installs the tendermint, basecoin or ethermint binary versions from the latest release in the repository. If you build your own version of the binaries, you can tell ansible to install that instead.

 ```
 GOPATH="<your go path>"
 go get -u github.com/tendermint/basecoin/cmd/basecoin

 DO_API_TOKEN="<The API token received from DigitalOcean>"
 TF_VAR_TESTNET_NAME="testnet-servers"
 ansible-playbook -i inventory/digital_ocean.py install.yml -e service=basecoin -e release_install=false
 ```

 Alternatively you can change the variable settings in `group_vars/all`.

 ## Other commands and roles

 There are few extra playbooks to make life easier managing your servers.

 * install.yml - Install basecoin or ethermint applications. (Tendermint gets installed automatically.) Use the `service` parameter to define which application to install. Defaults to `basecoin`.
 * reset.yml - Stop the application, reset the configuration and data, then start the application again. You need to pass `-e service=<servicename>`, like `-e service=basecoin`. It will restart the underlying tendermint application too.
 * restart.yml - Restart a service on all nodes. You need to pass `-e service=<servicename>`, like `-e service=basecoin`. It will restart the underlying tendermint application too.
 * stop.yml - Stop the application. You need to pass `-e service=<servicename>`.
 * status.yml - Check the service status and print it. You need to pass `-e service=<servicename>`.
 * start.yml - Start the application. You need to pass `-e service=<servicename>`.
 * ubuntu16-patch.yml - Ubuntu 16.04 does not have the minimum required python package installed to be able to run ansible. If you are using ubuntu, run this playbook first on the target machines. This will install the python pacakge that is required for ansible to work correctly on the remote nodes.
 * upgrade.yml - Upgrade the `service` on your testnet. It will stop the service and restart it at the end. It will only work if the upgraded version is backward compatible with the installed version.
 * upgrade-reset.yml - Upgrade the `service` on your testnet and reset the database. It will stop the service and restart it at the end. It will work for upgrades where the new version is not backward-compatible with the installed version - however it will reset the testnet to its default.

 The roles are self-sufficient under the `roles/` folder.

 * install - install the application defined in the `service` parameter. It can install release packages and update them with custom-compiled binaries.
 * unsafe_reset - delete the database for a service, including the tendermint database.
 * config - configure the application defined in `service`. It also configures the underlying tendermint service. Check `group_vars/all` for options.
 * stop - stop an application. Requires the `service` parameter set.
 * status - check the status of an application. Requires the `service` parameter set.
 * start - start an application. Requires the `service` parameter set.

 ## Default variables

 Default variables are documented under `group_vars/all`. You can the parameters there to deploy a previously created genesis.json file (instead of dynamically creating it) or if you want to deploy custom built binaries instead of deploying a released version.


--- a/ansible/img/a_plus_t.png
+++ b/ansible/img/a_plus_t.png
--- a/docker/README.md
+++ b/docker/README.md
@ -1,95 +0,0 @@
 # Docker container description for Tendermint applications

 * Overview (#Overview)
 * Tendermint (#Tendermint)
 * Basecoin (#Basecoin)
 * Ethermint (#Ethermint)

 ## Overview

 This folder contains Docker container descriptions. Using this folder you can build your own Docker images with the tendermint application.

 It is assumed that you set up docker already.

 If you don't want to build the images yourself, you should be able to download them from Docker Hub.

 ## Tendermint

 Build the container:
 Copy the `tendermint` binary to the `tendermint` folder.
 ```
 docker build -t tendermint tendermint
 ```

 The application configuration will be stored at `/tendermint` in the container. The ports 46656 and 46657 will be open for ABCI applications to connect.

 Initialize tendermint configuration and keep it after the container is finished in a docker volume called `data`:
 ```
 docker run --rm -v data:/tendermint tendermint init
 ```
 If you want the docker volume to be a physical directory on your filesystem, you have to give an absolute path to docker and make sure the permissions allow the application to write it.

 Get the public key of tendermint:
 ```
 docker run --rm -v data:/tendermint tendermint show_validator
 ```

 Run the docker tendermint application with:
 ```
 docker run --rm -d -v data:/tendermint tendermint node
 ```

 ## Basecoin

 Build the container:
 Copy the `basecoin` binary to the `basecoin` folder.
 ```
 docker build -t basecoin basecoin
 ```
 The application configuration will be stored at `/basecoin`.

 Initialize basecoin configuration and keep it after the container is finished:
 ```
 docker run --rm -v basecoindata:/basecoin basecoin init deadbeef
 ```
 Use your own basecoin account instead of `deadbeef` in the `init` command.

 Get the public key of basecoin:
 We use a trick here: since the basecoin and the tendermint configuration folders are similar, the `tendermint` command can extract the public key for us if we feed the basecoin configuration folder to tendermint.
 ```
 docker run --rm -v basecoindata:/tendermint tendermint show_validator
 ```

 Run the docker tendermint application with:
 This is a two-step process:
 * Run the basecoin container.
 * Run the tendermint container and expose the ports that allow clients to connect. The --proxy_app should contain the basecoin application's IP address and port.
 ```
 docker run --rm -d -v basecoindata:/basecoin basecoin start --without-tendermint
 docker run --rm -d -v data:/tendermint -p 46656-46657:46656-46657 tendermint node --proxy_app tcp://172.17.0.2:46658
 ```

 ## Ethermint

 Build the container:
 Copy the `ethermint` binary and the setup folder to the `ethermint` folder.
 ```
 docker build -t ethermint ethermint
 ```
 The application configuration will be stored at `/ethermint`.
 The files required for initializing ethermint (the files in the source `setup` folder) are under `/setup`.

 Initialize ethermint configuration:
 ```
 docker run --rm -v ethermintdata:/ethermint ethermint init /setup/genesis.json
 ```

 Start ethermint as a validator node:
 This is a two-step process:
 * Run the ethermint container. You will have to define where tendermint runs as the ethermint binary connects to it explicitly.
 * Run the tendermint container and expose the ports that allow clients to connect. The --proxy_app should contain the ethermint application's IP address and port.
 ```
 docker run --rm -d -v ethermintdata:/ethermint ethermint --tendermint_addr tcp://172.17.0.3:46657
 docker run --rm -d -v data:/tendermint -p 46656-46657:46656-46657 tendermint node --proxy_app tcp://172.17.0.2:46658
 ```

--- a/mintnet-kubernetes/README.md
+++ b/mintnet-kubernetes/README.md
@ -1,229 +0,0 @@
 # Tendermint network powered by Kubernetes

 ![Tendermint plus Kubernetes](img/t_plus_k.png)

 * [QuickStart (MacOS)](#quickstart-macos)
 * [QuickStart (Linux)](#quickstart-linux)
 * [Usage](#usage)
 * [Security](#security)
 * [Fault tolerance](#fault-tolerance)
 * [Starting process](#starting-process)

 This should primarily be used for testing purposes or for tightly-defined
 chains operated by a single stakeholder (see [the security
 precautions](#security)). If your desire is to launch an application with many
 stakeholders, consider using our set of Ansible scripts.

 ## QuickStart (MacOS)

 [Requirements](https://github.com/kubernetes/minikube#requirements)

 ```
 curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/kubectl
 curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.18.0/minikube-darwin-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
 minikube start

 git clone https://github.com/tendermint/tools.git && cd tools/mintnet-kubernetes/examples/basecoin && make create
 ```

 ## QuickStart (Linux)

 [Requirements](https://github.com/kubernetes/minikube#requirements)

 ```
 curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/kubectl
 curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.18.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
 minikube start

 git clone https://github.com/tendermint/tools.git && cd tools/mintnet-kubernetes/examples/basecoin && make create
 ```

 ### Verify everything works

 **Using a shell:**

 1. wait until all the pods are `Running`.

   ```
   kubectl get pods -w -o wide -L tm
   ```

 2. query the Tendermint app logs from the first pod.

   ```
   kubectl logs -c tm -f tm-0
   ```

 3. use [Rest API](https://tendermint.com/docs/internals/rpc) to fetch the
   status of the second pod's Tendermint app. Note we are using `kubectl exec`
   because pods are not exposed (and should not be) to the outer network.

   ```
   kubectl exec -c tm tm-0 -- curl -s http://tm-1.basecoin:46657/status | json_pp
   ```

 **Using the dashboard:**

 ```
 minikube dashboard
 ```

 ### Clean up

 ```
 make destroy
 ```

 ## Usage

 ### (1/4) Setup a Kubernetes cluster

 - locally using [Minikube](https://github.com/kubernetes/minikube)
 - on GCE with a single click in the web UI
 - on AWS using [Kubernetes Operations](https://github.com/kubernetes/kops/blob/master/docs/aws.md)
 - on Linux machines (Digital Ocean) using [kubeadm](https://kubernetes.io/docs/getting-started-guides/kubeadm/)
 - on AWS, Azure, GCE or bare metal using [Kargo (Ansible)](https://kubernetes.io/docs/getting-started-guides/kargo/)

 Please refer to [the official
 documentation](https://kubernetes.io/docs/getting-started-guides/) for overview
 and comparison of different options. See our guides for [Google Cloud
 Engine](docs/SETUP_K8S_ON_GCE.md) or [Digital Ocean](docs/SETUP_K8S_ON_DO.md).

 **Make sure you have Kubernetes >= 1.5, because you will be using StatefulSets,
 which is a beta feature in 1.5.**

 ### (2/4) Create a configuration file

 Download a template:

 ```
 curl -Lo app.yaml https://github.com/tendermint/tools/raw/master/mintnet-kubernetes/app.template.yaml
 ```

 Open `app.yaml` in your favorite editor and configure your app container
 (navigate to `- name: app`). Kubernetes DSL (Domain Specific Language) is very
 simple, so it should be easy. You will need to set Docker image, command and/or
 run arguments. Replace variables prefixed with `YOUR_APP` with corresponding
 values. Set genesis time to now and preferable chain ID in ConfigMap.

 Please note if you are changing `replicas` number, do not forget to update
 `validators` set in ConfigMap. You will be able to scale the cluster up or down
 later, but new pods (nodes) won't become validators automatically.

 ### (3/4) Deploy your application

 ```
 kubectl create -f ./app.yaml
 ```

 ### (4/4) Observe your cluster

 **web UI** <-> https://github.com/kubernetes/dashboard

 The easiest way to access Dashboard is to use kubectl. Run the following command in your desktop environment:

 ```
 kubectl proxy
 ```

 kubectl will handle authentication with apiserver and make Dashboard available at [http://localhost:8001/ui](http://localhost:8001/ui)

 **shell**

 List all the pods:

 ```
 kubectl get pods -o wide -L tm
 ```

 StatefulSet details:

 ```
 kubectl describe statefulsets tm
 ```

 First pod details:

 ```
 kubectl describe pod tm-0
 ```

 Tendermint app logs from the first pod:

 ```
 kubectl logs tm-0 -c tm -f
 ```

 App logs from the first pod:

 ```
 kubectl logs tm-0 -c app -f
 ```

 Status of the second pod's Tendermint app:

 ```
 kubectl exec -c tm tm-0 -- curl -s http://tm-1.<YOUR_APP_NAME>:46657/status | json_pp
 ```

 ## Security

 Due to the nature of Kubernetes, where you typically have a single master, the
 master could be a SPOF (Single Point Of Failure). Therefore, you need to make
 sure only authorized people can access it. And these people themselves had
 taken basic measures in order not to get hacked.

 These are the best practices:

 - all access to the master is over TLS
 - access to the API Server is X.509 certificate or token based
 - etcd is not exposed directly to the cluster
 - ensure that images are free of vulnerabilities ([1](https://github.com/coreos/clair))
 - ensure that only authorized images are used in your environment
 - disable direct access to Kubernetes nodes (no SSH)
 - define resource quota

 Resources:

 - https://kubernetes.io/docs/admin/accessing-the-api/
 - http://blog.kubernetes.io/2016/08/security-best-practices-kubernetes-deployment.html
 - https://blog.openshift.com/securing-kubernetes/

 ## Fault tolerance

 Having a single master (API server) is a bad thing also because if something
 happens to it, you risk being left without an access to the application.

 To avoid that you can [run Kubernetes in multiple
 zones](https://kubernetes.io/docs/admin/multiple-zones/), each zone running an
 [API server](https://kubernetes.io/docs/admin/high-availability/) and load
 balance requests between them. Do not forget to make sure only one instance of
 scheduler and controller-manager are running at once.

 Running in multiple zones is a lightweight version of a broader [Cluster
 Federation feature](https://kubernetes.io/docs/admin/federation/). Federated
 deployments could span across multiple regions (not zones). We haven't tried
 this feature yet, so any feedback is highly appreciated! Especially, related to
 additional latency and cost of exchanging data between the regions.

 Resources:

 - https://kubernetes.io/docs/admin/high-availability/

 ## Starting process

 ![StatefulSet](img/statefulset.png)

 Init containers (`tm-gen-validator`) are run before all other containers,
 creating public-private key pair for each pod. Every `tm` container then asks
 other pods for their public keys, which are served with nginx (`pub-key`
 container). When `tm` container have all the keys, it forms a genesis file and
 starts Tendermint process.

 ## TODO

 - [ ] run tendermint from tmuser
  ```
  securityContext:
    fsGroup: 999
  ```
--- a/mintnet-kubernetes/img/statefulset.png
+++ b/mintnet-kubernetes/img/statefulset.png
--- a/mintnet-kubernetes/img/t_plus_k.png
+++ b/mintnet-kubernetes/img/t_plus_k.png
--- a/terraform-digitalocean/README.md
+++ b/terraform-digitalocean/README.md
@ -1,66 +0,0 @@
 # Terraform for Digital Ocean

 This is a generic [Terraform](https://www.terraform.io/) configuration that sets up DigitalOcean droplets.

 # Prerequisites

 * Install [HashiCorp Terraform](https://www.terraform.io) on a linux machine.
 * Create a [DigitalOcean API token](https://cloud.digitalocean.com/settings/api/tokens) with read and write capability.
 * Create a private/public key pair for SSH. This is needed to log onto your droplets as well as by Ansible to connect for configuration changes.
 * Set up the public SSH key at the [DigitalOcean security page](https://cloud.digitalocean.com/settings/security). [Here](https://www.digitalocean.com/community/tutorials/how-to-use-ssh-keys-with-digitalocean-droplets)'s a tutorial.
 * Find out your SSH key ID at DigitalOcean by querying the below command on your linux box:

 ```
 DO_API_TOKEN="<The API token received from DigitalOcean>"
 curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer $DO_API_TOKEN" "https://api.digitalocean.com/v2/account/keys"
 ```

 # How to run

 ## Initialization
 If this is your first time using terraform, you have to initialize it by running the below command. (Note: initialization can be run multiple times)
 ```
 terraform init
 ```

 After initialization it's good measure to create a new Terraform environment for the droplets so they are always managed together.

 ```
 TESTNET_NAME="testnet-servers"
 terraform env new "$TESTNET_NAME"
 ```

 Note this `terraform env` command is only available in terraform `v0.9` and up.

 ## Execution

 The below command will create 4 nodes in DigitalOcean. They will be named `testnet-servers-node0` to `testnet-servers-node3` and they will be tagged as `testnet-servers`.
 ```
 DO_API_TOKEN="<The API token received from DigitalOcean>"
 SSH_IDS="[ \"<The SSH ID received from the curl call above.>\" ]"
 terraform apply -var TESTNET_NAME="testnet-servers" -var servers=4 -var DO_API_TOKEN="$DO_API_TOKEN" -var ssh_keys="$SSH_IDS"
 ```

 Note: `ssh_keys` is a list of strings. You can add multiple keys. For example: `["1234567","9876543"]`.

 Alternatively you can use the default settings. The number of default servers is 4 and the testnet name is `tf-testnet1`. Variables can also be defined as environment variables instead of the command-line. Environment variables that start with `TF_VAR_` will be translated into the Terraform configuration. For example the number of servers can be overriden by setting the `TF_VAR_servers` variable.

 ```
 TF_VAR_DO_API_TOKEN="<The API token received from DigitalOcean>"
 TF_VAR_TESTNET_NAME="testnet-servers"
 terraform-apply
 ```

 ## Security

 DigitalOcean uses the root user by default on its droplets. This is fine as long as SSH keys are used. However some people still would like to disable root and use an alternative user to connect to the droplets - then `sudo` from there.
 Terraform can do this but it requires SSH agent running on the machine where terraform is run, with one of the SSH keys of the droplets added to the agent. (This will be neede for ansible too, so it's worth setting it up here. Check out the [ansible](https://github.com/tendermint/tools/tree/master/ansible) page for more information.)
 After setting up the SSH key, run `terraform apply` with `-var noroot=true` to create your droplets. Terraform will create a user called `ec2-user` and move the SSH keys over, this way disabling SSH login for root. It also adds the `ec2-user` to the sudoers file, so after logging in as ec2-user you can `sudo` to `root`.

 DigitalOcean announced firewalls but the current version of Terraform (0.9.8 as of this writing) does not support it yet. Fortunately it is quite easy to set it up through the web interface (and not that bad through the [RESTful API](https://developers.digitalocean.com/documentation/v2/#firewalls) either). When adding droplets to a firewall rule, you can add tags. All droplets in a testnet are tagged with the testnet name so it's enough to define the testnet name in the firewall rule. It is not necessary to add the nodes one-by-one. Also, the firewall rule "remembers" the testnet name tag so if you change the servers but keep the name, the firewall rules will still apply.

 # What's next

 After setting up the nodes, head over to the [ansible folder](https://github.com/tendermint/tools/tree/master/ansible) to set up tendermint and basecoin.