Tinkerbell.Sandbox/generate-envrc.sh

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2020-08-20 11:53:27 +00:00
#!/usr/bin/env bash
# stops the execution if a command or pipeline has an error
set -eu
if command -v tput >/dev/null && tput setaf 1 >/dev/null 2>&1; then
# color codes
RED="$(tput setaf 1)"
RESET="$(tput sgr0)"
fi
ERR="${RED:-}ERROR:${RESET:-}"
err() (
if [ -z "${1:-}" ]; then
cat >&2
else
echo "$ERR " "$@" >&2
fi
)
candidate_interfaces() (
ip -o link show |
awk -F': ' '{print $2}' |
sed 's/[ \t].*//;/^\(lo\|bond0\|\|\)$/d' |
sort
)
validate_tinkerbell_network_interface() (
local tink_interface=$1
if ! candidate_interfaces | grep -q "^$tink_interface$"; then
err "Invalid interface ($tink_interface) selected, must be one of:"
candidate_interfaces | err
return 1
else
return 0
fi
)
generate_password() (
head -c 12 /dev/urandom | sha256sum | cut -d' ' -f1
)
generate_envrc() (
local tink_interface=$1
validate_tinkerbell_network_interface "$tink_interface"
local tink_password
tink_password=$(generate_password)
local registry_password
registry_password=$(generate_password)
cat <<EOF
# Network interface for Tinkerbell's network
export TINKERBELL_NETWORK_INTERFACE="$tink_interface"
# Decide on a subnet for provisioning. Tinkerbell should "own" this
# network space. Its subnet should be just large enough to be able
# to provision your hardware.
export TINKERBELL_CIDR=29
# Host IP is used by provisioner to expose different services such as
# tink, boots, etc.
#
# The host IP should the first IP in the range, and the Nginx IP
# should be the second address.
export TINKERBELL_HOST_IP=192.168.1.1
# NGINX IP is used by provisioner to serve files required for iPXE boot
export TINKERBELL_NGINX_IP=192.168.1.2
# Tink server username and password
export TINKERBELL_TINK_USERNAME=admin
export TINKERBELL_TINK_PASSWORD="$tink_password"
# Docker Registry's username and password
export TINKERBELL_REGISTRY_USERNAME=admin
export TINKERBELL_REGISTRY_PASSWORD="$registry_password"
# Legacy options, to be deleted:
export FACILITY=onprem
export ROLLBAR_TOKEN=ignored
export ROLLBAR_DISABLE=1
export OSIE_DOWNLOAD_LINK=https://tinkerbell-oss.s3.amazonaws.com/osie-uploads/osie-v0-n=252,c=bc454bc,b=master.tar.gz
EOF
)
main() (
if [ -z "${1:-}" ]; then
err "Usage: $0 network-interface-name > envrc"
exit 1
fi
generate_envrc "$1"
)
main "$@"