Solution
Since BigchainDB and Tendermint are so tightly coupled we need to introduce a process supervisor to make them act like a single microservice, so that if BigchainDB crashes, Tendermint does as well and both are restarted and Tendermint requests a connection towards the proxy app.
In Kubernetes, they can be exposed as part of a one POD.
For BigchainDB as a system service/process, we need to introduce a process supervisor such as systemd.
This PR only solves the former.
Changes
Upgrade deployment from Tendermint v0.12.0 to v0.19.0
Update some documentation
Fix nginx-http entrypoint issues.
Update generate-configs.sh script to handle config generation without https-certificates.
Update Dockerfile to process dependency links introduced by abci
Integrate BigchainDB and Tendermint as a single microservice.
This required making BigchainDB to be exposed as a statefulset.
Introduce new liveness probe checks.
Issues Resolved
Partially fixes#2232
* Fix for access token authorization for GET calls
- Naming inconsistency for cluster-fqdn causing issues
- Change cluster-frontend-port to node-frontend-port
* Change hardcoded 9984 to configurable
- Update imagePullPolicy from IfNotPresent to Always
for all unstable images we are using in k8s template,
because those images are updated regularly, we will
keep it unstable until the official release.
- Use Tendermint v0.13 as base docker image, since our current
integration is based out of v0.13
- Separate deployments, services, statefulsets etc
`yaml` files for tendermint based deployment.
- Separate Dockerfiles for mongodb, nginx for
tendermint integrated BigchainDB.
- turned off server tokens so the server does not leak nginx information
on errors and header
- Added header to turn off cross site scripting
- use stable release of nginx instead of mainline
- limit available methods
- update response code
- If a mandatory variable is not specified, it will exit with the relevant
code and error message.
- For more verbosity, we will also echo the values for all the mandatory
variables.
* Remove support for whitelist
* Rename nginx to nginx-api
* Remove websocket support from nginx-api
* Change nginx to nginx-api service
The nginx-api service will proxy requests to the BigchainDB HTTP API.
* Rename ngx-instance-0 to ngx-api-instance-0 in nginx_3scale
* Update nginx-api service base docker image and README
* Add nginx-ws service to support Websocket
* Add config files for simple dev setup
* WS support with split NGINX
* NGINX module as single entrypoint into the cluster.
* Tested HTTP and WS with latest configs
* Openresty as separate service
* Remove upstream api port as configuration parameter
* Changes while testing
* Adding READMEs for nginx-http and nginx-https modules
* Documentation update
* Change 'Openresty' to 'OpenResty'.
