homelab-nomad/databases/postgres.nomad

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job "postgres-server" {
datacenters = ["dc1"]
type = "service"
priority = 80
group "postgres-server" {
count = 1
restart {
attempts = 10
interval = "5m"
delay = "25s"
mode = "delay"
}
network {
mode = "bridge"
port "db" {
static = 5432
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}
port "tls" {}
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}
volume "postgres-data" {
type = "host"
read_only = false
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source = "postgres-data"
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}
service {
name = "postgres-server"
provider = "nomad"
port = "db"
}
service {
name = "postgres-tls"
provider = "nomad"
port = "tls"
}
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task "postgres-server" {
driver = "docker"
config {
image = "postgres:14"
ports = ["db"]
}
volume_mount {
volume = "postgres-data"
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destination = "/var/lib/postgresql/data"
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read_only = false
}
env = {
# Allow connections from any host
"MYSQL_ROOT_HOST" = "%"
}
template {
data = <<EOH
{{ with nomadVar "nomad/jobs/postgres-server" }}
POSTGRES_USER={{ .superuser }}
POSTGRES_PASSWORD={{ .superuser_pass }}
{{ end }}
EOH
destination = "secrets/db.env"
env = true
}
resources {
cpu = 500
memory = 700
memory_max = 1200
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}
}
task "stunnel" {
driver = "docker"
config {
image = "iamthefij/stunnel:latest"
args = ["${NOMAD_TASK_DIR}/stunnel.conf"]
ports = ["tls"]
}
resources {
cpu = 100
memory = 100
}
template {
data = <<EOF
syslog = no
foreground = yes
delay = yes
[postgres_server]
accept = {{ env "NOMAD_PORT_tls" }}
connect = 127.0.0.1:5432
ciphers = PSK
PSKsecrets = {{ env "NOMAD_SECRETS_DIR" }}/stunnel_psk.txt
EOF
destination = "${NOMAD_TASK_DIR}/stunnel.conf"
}
template {
data = <<EOF
{{ range nomadVarList "secrets/postgres/allowed_psks" -}}
{{ with nomadVar .Path }}{{ .psk }}{{ end }}
{{ end -}}
EOF
destination = "${NOMAD_SECRETS_DIR}/stunnel_psk.txt"
}
}
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}
}