Filter ec2 instances by state 'running' and Tag Name / Value

running-instances-by-tag

# Add this to your ~/.aws/cli/alias file
#
# rit == (R)unning (I)nstances by (T)ag 
#        (Name and Value)
# 
# Allows users to filter their AWS instances, which are running, by Tag Name / Value and see a summarised view.
# 
# Pre-requisite - Expects one tag to be 'Name'
#
# e.g. With 1 Tag Match the Instance tagged with "branch" of "develop"
#
#   >aws rit branch develop
# 
# With 2 Tags Match the Instance tagged with "branch" of "develop" AND "component" of "api"
#   >aws rit branch develop component api
# 
# Currently limited to 2 tags - future enhancement (suggestions appreciated :) 
#
rit =
  ! g() {
      local EXTRA_TAG_FILTER=""
      [[ $# -eq 4 ]] && EXTRA_TAG_FILTER="Name=tag:${3},Values=*${4}*"

  aws ec2 describe-instances \
    --filter "Name=tag:${1},Values=*${2}*" ${EXTRA_TAG_FILTER} "Name=instance-state-name,Values=running" \
    --query 'Reservations[].Instances[].{Tags: Tags, State: State.Name, ID: InstanceId,PrivateIpAddress: PrivateIpAddress, LaunchTime: LaunchTime, Name: Tags[?Key==`Name`].Value| [0],Type: InstanceType, Platform: Platform || `Linux`}' \
    
    #  jq equivalent of the jmespath match
    # | select((.Tags[]|select(.Key=="Name")|.Value) | match("REGEXHERE") )
 }; g