homelab-nomad/core/lego.nomad

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variable "lego_version" {
default = "4.14.2"
type = string
}
variable "nomad_var_dirsync_version" {
default = "0.0.2"
type = string
}
job "lego" {
type = "batch"
periodic {
cron = "@weekly"
prohibit_overlap = true
}
group "main" {
task "main" {
driver = "exec"
config {
# image = "alpine:3"
command = "/bin/bash"
args = ["${NOMAD_TASK_DIR}/start.sh"]
}
artifact {
source = "https://github.com/go-acme/lego/releases/download/v${var.lego_version}/lego_v${var.lego_version}_linux_${attr.cpu.arch}.tar.gz"
}
artifact {
source = "https://git.iamthefij.com/iamthefij/nomad-var-dirsync/releases/download/v${var.nomad_var_dirsync_version}/nomad-var-dirsync-linux-${attr.cpu.arch}.tar.gz"
}
template {
data = <<EOH
#! /bin/sh
set -ex
cd ${NOMAD_TASK_DIR}
echo "Read certs from nomad vars"
${NOMAD_TASK_DIR}/nomad-var-dirsync-linux-{{ env "attr.cpu.arch" }} -root-var=secrets/certs read .
action=run
if [ -f /.lego/certificates/_.thefij.rocks.crt ]; then
action=renew
fi
echo "Attempt to $action certificates"
${NOMAD_TASK_DIR}/lego \
--accept-tos --pem \
--email=iamthefij@gmail.com \
--domains="*.thefij.rocks" \
--dns="cloudflare" \
$action \
--$action-hook="${NOMAD_TASK_DIR}/nomad-var-dirsync-linux-{{ env "attr.cpu.arch" }} -root-var=secrets/certs write .lego" \
EOH
destination = "${NOMAD_TASK_DIR}/start.sh"
}
template {
data = <<EOH
{{ with nomadVar "nomad/jobs/lego" -}}
CF_DNS_API_TOKEN={{ .domain_lego_dns }}
CF_ZONE_API_TOKEN={{ .domain_lego_dns }}
{{- end }}
EOH
destination = "secrets/cloudflare.env"
env = true
}
env = {
NOMAD_ADDR = "unix:///secrets/api.sock"
}
identity {
env = true
}
resources {
cpu = 50
memory = 100
}
}
}
}