Google Cloud helper functions to access instances from the command line

gcloud-helpers.sh

# SSH into an instance using the instance name (supports partial matching)
# Usage: gcessh <instance-name>
gcessh() { $(gcloud compute instances list --filter="name~'$1'" --sort-by name | tail -n +2 | head -1 | awk '{print "ssh "$1}' ) 2>/dev/null; };

# Describe an instance using the instance name (exact match only)
# Usage: gcedesc <instance-name>
gcedesc() { $(gcloud compute instances list | grep $1 | awk '{print "gcloud compute instances describe "$1" --zone "$2}'); };

# List all matching instances using a partially matched instance name (perfect for listing nodes from an instance group)
# Usage: gcelsn <instance-name>
gcelsn() { gcloud compute instances list --filter="name~'$1'" --sort-by name; };

# List all matching instances using zone names (exact match only)
# Usage: gcelsz <zone-name>[,<zone-name> ...]
gcelsz() { gcloud compute instances list --filter="zone:($1)" --sort-by name; };

# Execute a command against each matching instance using the instance name (supports partial matching)
# Example: gcesshcmd <instance-name> '<command>'
gcesshcmd() { OLDIFS=$IFS; IFS=$'\n'; ARG1=$1; ARG2=$2; for I in $(gcloud compute instances list --filter="name~'$1'" --sort-by name | tail -n +2 | awk '{print "echo \"---[ "$1" ]---\"; ssh "$1" '\'"$ARG2"\'' 2>/dev/null"}'); do false && echo "$I"; true && eval "$I"; echo ""; done; IFS=$OLDIFS; };

echo 'Available commands:'
echo 'gcessh     <instance-name>             (ssh into to an instance, using instance name, or regex)'
echo 'gcedesc    <instance-name>             (describe an instance, using instance name)'
echo 'gcelsn     <instance-name>             (list instances, using instance name, or regex)'
echo 'gcelsz     <zone-name>                 (list instances, using zone name)'
echo 'gcesshcmd  <instance-name>  <command>  (execute a command on matching instances, using instance name, or regex)'