homelab-nomad/core/metrics/grafana.nomad

181 lines
4.2 KiB
HCL

job "grafana" {
datacenters = ["dc1"]
group "grafana" {
count = 1
network {
mode = "bridge"
port "web" {
host_network = "wesher"
to = 3000
}
# TODO: Not sure if this needs to be mapped here since it's within the group
port "renderer" {
host_network = "loopback"
to = 8081
}
}
ephemeral_disk {
migrate = true
sticky = true
}
service {
name = "grafana"
provider = "nomad"
port = "web"
tags = [
"traefik.enable=true",
"traefik.http.routers.grafana.entryPoints=websecure",
]
}
task "grafana-bootstrap" {
driver = "docker"
lifecycle {
hook = "prestart"
sidecar = false
}
config {
image = "mariadb:10"
args = [
"/bin/bash",
"-c",
"/usr/bin/mysql --defaults-extra-file=$${NOMAD_SECRETS_DIR}/my.cnf < $${NOMAD_SECRETS_DIR}/bootstrap.sql",
]
}
template {
data = <<EOF
[client]
{{ range nomadService 1 (env "NOMAD_ALLOC_ID") "mysql-server" -}}
host={{ .Address }}
port={{ .Port }}
{{ end -}}
user=root
{{ with nomadVar "nomad/jobs" -}}
password={{ .mysql_root_password }}
{{ end -}}
EOF
destination = "$${NOMAD_SECRETS_DIR}/my.cnf"
}
template {
data = <<EOF
{{ with nomadVar "nomad/jobs/grafana" -}}
{{ if .db_name -}}
CREATE DATABASE IF NOT EXISTS `{{ .db_name }}`;
CREATE USER IF NOT EXISTS '{{ .db_user }}'@'%' IDENTIFIED BY '{{ .db_pass }}';
GRANT ALL ON `{{ .db_name }}`.* to '{{ .db_user }}'@'%';
-- Create Read Only user
CREATE USER IF NOT EXISTS '{{ .db_user_ro }}'@'%' IDENTIFIED BY '{{ .db_pass_ro }}';
{{ else -}}
SELECT 'NOOP';
{{ end -}}
{{ end -}}
EOF
destination = "$${NOMAD_SECRETS_DIR}/bootstrap.sql"
}
resources {
cpu = 50
memory = 50
}
}
task "grafana" {
driver = "docker"
config {
image = "grafana/grafana:9.4.2"
ports = ["web"]
mount {
type = "bind"
target = "/etc/grafana"
source = "local/config"
}
}
env = {
"GF_INSTALL_PLUGINS" = "grafana-clock-panel,grafana-piechart-panel,grafana-polystat-panel,natel-discrete-panel",
}
template {
data = <<EOF
{{ with nomadVar "nomad/jobs/grafana" -}}
GF_SECURITY_ADMIN_PASSWORD={{ .admin_pw }}
GF_SMTP_USER={{ .smtp_user }}
GF_SMTP_PASSWORD={{ .smtp_password }}
GF_EXTERNAL_IMAGE_STORAGE_S3_ACCESS_KEY={{ .minio_access_key }}
GF_EXTERNAL_IMAGE_STORAGE_S3_SECRET_KEY={{ .minio_secret_key }}
GRAFANA_ALERT_EMAIL_ADDRESSES={{ .alert_email_addresses }}
{{ if .db_name -}}
# Database storage
GF_DATABASE_TYPE=mysql
{{ range nomadService 1 (env "NOMAD_ALLOC_ID") "mysql-server" -}}
GF_DATABASE_HOST={{ .Address }}:{{ .Port }}
{{- end }}
GF_DATABASE_NAME={{ .db_name }}
GF_DATABASE_USER={{ .db_user }}
GF_DATABASE_PASSWORD={{ .db_pass }}
{{- end }}
SLACK_BOT_URL={{ .slack_bot_url }}
SLACK_BOT_TOKEN={{ .slack_bot_token }}
SLACK_HOOK_URL={{ .slack_hook_url }}
{{ end -}}
EOF
env = true
destination = "secrets/conf.env"
}
%{ for config_file in fileset(join("/", [module_path, "grafana"]), "**") ~}
template {
data = <<EOF
${file(join("/", [module_path, "grafana", config_file]))}
EOF
change_mode = "signal"
change_signal = "SIGHUP"
destination = "local/config/${config_file}"
perms = 777
# Set owner to grafana uid
# uid = 472
# Change template delimeter for dashboard files that use json and have double curly braces and square braces
%{ if length(regexall("dashboard", config_file)) > 0 ~}
left_delimiter = "<<<<"
right_delimiter = ">>>>"
%{ endif }
}
%{ endfor }
resources {
cpu = 100
memory = 200
}
}
task "grafana-image-renderer" {
driver = "docker"
config {
image = "grafana/grafana-image-renderer:3.6.1"
ports = ["renderer"]
}
env = {
"RENDERING_MODE" = "clustered"
"RENDERING_CLUSTERING_MODE" = "browser"
"RENDERING_CLUSTERING_MAX_CONCURRENCY" = 5
"RENDERING_CLUSTERING_TIMEOUT" = 30
}
}
}
}