AWS lambda is a neat feature that runs code in response to requests and transforms the code's output into some response. Requests can be an event occurring in the AWS platform such as an S3 modification or an HTTP request. The response is an MVC-style model which needs to pass through some network component, like … Continue reading AWS diaries: serving HTML from lambda
Category: cloud
Azure diaries: can’t access KeyVault
Context: as a tenant administrator you can't inspect KeyVault contents created by other people ("you are unauthorized to view these contents"). Solution: assign yourself appropriate permissions like this: Locate the KeyVault in the Azure portal: go to "Access policies"click "+Add Access Policy"Key permissions: everything under "Key Management Operations" and "Cryptographic Operations"Accordingly for key and certificate … Continue reading Azure diaries: can’t access KeyVault
docker-proxy port in use
Quick one: you're starting a container through docker-compose and it says a port is in use. You "netstat -plutn" it and find out, that port is in use by docker-proxy. Github user rdavaillaud knows what's going on: stop dockerremove all internal docker network: rm /var/lib/docker/network/files/start docker
Cloud-specific software architecture patterns
This post is about software application architecture patterns that simplify application design by leveraging cloud features. New: Download the cloud pattern cheat sheet Packaged configuration Packaged configuration cue cardWhatConfiguration is packaged with deployment artefactsMotivationSimplify system, increase resilience by removing runtime dependency on configuration serviceHowConfiguration is managed in configuration repository, CI/CD combines generic application artefact … Continue reading Cloud-specific software architecture patterns
Rebuilding single services in docker-compose
Note to self: a single service ("container") out of a docker-compose.yaml file is rebuilt and restarted like this: docker-compose create container_name While this complains about deprecations, there is another way. Let's say we want to re-create a container called "web" belonging to a composition: # stop container docker-compose stop web # optionally destroy container. … Continue reading Rebuilding single services in docker-compose
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