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Notes about interesting challenges I’ve experienced in relation to… Containers at scale, automation, networking, encryption, monitoring, testing and generally trying to build and run robust production systems. Pictured right is my Greenwich Park office :) |
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Posts
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Terraform for loops
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Hashicorp Vault Notes
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Azure Keyvault Notes
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Kong Notes
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Different ssh keys for multiple github repos
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Kubernetes Stateful Set Dns
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Terraform loops with templates
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AKS imagePull authentication to Azure Container Registry
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JQ select
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Escaping quotes in Terraform
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K8s Executable ConfigMaps
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Go interfaces
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Run, and exec into, a kubernetes pod on the fly
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OSX Firewall CLI
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JWT Token generation and verification using PKI
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Generating an RSA keypair in PEM format
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General purpose admin GUI for relational databases
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Brigade CI setup
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Writing json to vault via the vault cli
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Terraform - breaking down complex interpolations into steps
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View Kubenetes events in time order
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Get the egress address of a Kubernetes cluster
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Terraform from scratch
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Providing values for a Terraform helm_release
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Terraform IF/ELSE
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Terraform - outputs from disabled resources
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Prometheus blackbox exporter
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Override entrypoint in docker compose
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Load testing Gitea
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Kubernetes persistent volumes
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Kubernetes nginx-ingress upload size
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curl tips
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Redirect output from multiple lines (group) in a script
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bash options parser
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xargs stuff
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check TLS endpoint with mutual auth enabled
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Here documents (heredoc) tips
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linux - quick group, user account and sudo setup
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split a tar archive
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git - authenticating to google cloud source repos
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awk tips
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kubelet logs
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How does a K8s pod has access to the API server
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Sort kubernetes events
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using etcdctl
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Pod environment vars from configmap
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Helm service account and related clusterrolebinding
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Brigade dependencies
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Kubernetes device mapper out of space - pod stuck in ContainerCreating state
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Hitting kube-proxy directly with curl to get container logs
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Kubernetes Ingress de-mystified
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Kubernetes - serviceaccount authentication tokens
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ssh tunneling (localport)
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show progress when uploading with curl
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programatically enable and disable individual crontab entries
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Remove whitespace from a string in bash
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An example splunk dashboard XML
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splunk regex
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Configure IBM's ikeycmd tool to support CMS
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Passwordless openssl
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bash shell shorthand conditionals
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Using grep to show lines adjacent to the search string
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Access tomcat manager from remote host
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Set up an ELK stack (CentOS)
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bash option parser
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Filter Git events within a Jenkinsfile
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Vagrant provisioning scripts
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Vagrant and AWS
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What IP's are on my subnet?
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port scanning
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Linux: one-liner group, user account and sudo setup
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Find which process is listening on a port with LSOF
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Obtain information about installed packages on CentOS and Ubuntu
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Unable to login via SSH with password - can login with ssh key and can su
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Accurately determine the number of CPU cores for a Linux machine
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login to existing docker container as root
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Transferring Docker Images between host machines
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Nginx - alias vs root
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Gitflow workflow
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Installing a specific version of a yum package
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Finding out which yum package contains a specific binary
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Accessing yum from behind a corporate proxy
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Delete jenkins builds using curl
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Adding new RPM's to an existing yum repo
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Set up a local yum repository
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PM2 notes
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Authenticate to an internal npm repository
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Pull Docker images from behind a corporate proxy - TLS Trust
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Adding Linux users via ssh
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storing git credentials