homelab/nomad-job/pihole.nomad

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job "pihole" {
datacenters = ["homelab"]
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priority = 100
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meta {
force = 1
}
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type = "service"
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constraint {
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attribute = "${attr.cpu.arch}"
value = "amd64"
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}
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group "pi-hole" {
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network {
port "dns" {
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static = 53
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}
port "http" {
}
}
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service {
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name = "pihole-gui"
tags = ["pihole", "admin",
"homer.enable=true",
"homer.name=Pi-hole",
"homer.service=Application",
"homer.type=PiHole",
"homer.logo=http://${NOMAD_ADDR_http}/admin/img/logo.svg",
"homer.target=_blank",
"homer.url=http://${NOMAD_ADDR_http}/admin",
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]
port = "http"
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}
task "server" {
driver = "docker"
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service {
name = "dns"
port = "dns"
check {
name = "service: dns tcp check"
type = "tcp"
interval = "10s"
timeout = "2s"
success_before_passing = "3"
failures_before_critical = "3"
}
check {
name = "service: dns dig check"
type = "script"
command = "/usr/bin/dig"
args = ["+short", "@127.0.0.1"]
interval = "10s"
timeout = "2s"
check_restart {
limit = 3
grace = "60s"
}
}
}
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config {
image = "pihole/pihole:latest"
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network_mode = "host"
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volumes = [
"local/dnsmasq.d/02-localresolver.conf:/etc/dnsmasq.d/02-localresolver.conf",
"/mnt/diskstation/nomad/pihole:/etc/pihole"
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]
}
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vault {
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policies = ["pihole"]
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}
env {
TZ = "Europe/Paris"
DNS1 = "1.1.1.1"
DNS2 = "80.67.169.40"
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WEB_PORT = "${NOMAD_PORT_http}"
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}
template {
data = <<EOH
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INTERFACE = {{ sockaddr "GetPrivateInterfaces | include \"network\" \"192.168.1.0/24\" | attr \"name\"" }}
FTLCONF_LOCAL_IPV4 = {{ env "NOMAD_IP_dns" }}
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WEBPASSWORD="{{with secret "secrets/data/nomad/pihole"}}{{.Data.data.WEBPASSWORD}}{{end}}"
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EOH
destination = "local/file.env"
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change_mode = "noop"
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env = true
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}
template {
data = <<EOH
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server=/ducamps.win/192.168.1.10
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server=/ducamps.eu/192.168.1.10
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{{range service "consul"}}server=/consul/{{.Address}}#8600
{{end}}
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domain=ducamps.win
no-negcache
bind-interfaces
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local-ttl=2
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EOH
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destination = "local/dnsmasq.d/02-localresolver.conf"
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change_mode = "restart"
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}
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resources {
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memory = 100
}
}
task "keepalived" {
driver = "docker"
lifecycle {
hook = "poststart"
sidecar = true
}
env {
KEEPALIVED_ROUTER_ID = "53"
KEEPALIVED_STATE = "MASTER"
KEEPALIVED_VIRTUAL_IPS = "192.168.1.4"
}
template{
destination = "local/env.yaml"
change_mode = "restart"
env= true
data = <<EOH
KEEPALIVED_INTERFACE= {{ sockaddr "GetPrivateInterfaces | include \"network\" \"192.168.1.0/24\" | attr \"name\"" }}
EOH
}
config {
image = "osixia/keepalived:2.0.20"
network_mode = "host"
cap_add = [
"NET_ADMIN",
"NET_BROADCAST",
"NET_RAW"
]
}
resources {
cpu = 20
memory = 20
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}
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}
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}
}