# app/electric

> Deploy Electric real-time sync service using Pigsty-managed PostgreSQL

---

LLMS index: [llms.txt](/llms.txt)

---

The `app/electric` configuration template provides a reference configuration for deploying Electric SQL real-time sync service, enabling real-time data synchronization from PostgreSQL to clients.


--------

## Overview

- Config Name: `app/electric`
- Node Count: Single node
- Description: Deploy Electric real-time sync using Pigsty-managed PostgreSQL
- OS Distro: `el8`, `el9`, `el10`, `d12`, `d13`, `u22`, `u24`, `u26`
- OS Arch: `x86_64`, `aarch64`
- Related: [`meta`](/docs/conf/meta/)

Usage:

```bash
./configure -c app/electric [-i <primary_ip>]
```


--------

## Content

Source: [`pigsty/conf/app/electric.yml`](https://github.com/pgsty/pigsty/blob/main/conf/app/electric.yml)

```yaml
---
#==============================================================#
# File      :   electric.yml
# Desc      :   pigsty config for running 1-node electric app
# Ctime     :   2025-03-29
# Mtime     :   2025-12-12
# Docs      :   https://pigsty.io/docs/app/electric
# License   :   Apache-2.0 @ https://pigsty.io/docs/about/license/
# Copyright :   2018-2026  Ruohang Feng / Vonng (rh@vonng.com)
#==============================================================#

# tutorial: https://pigsty.io/docs/app/electric
# quick start: https://electric-sql.com/docs/quickstart
# how to use this template:
#
#  curl -fsSL https://repo.pigsty.io/get | bash; cd ~/pigsty
# ./bootstrap                 # prepare local repo & ansible
# ./configure -c app/electric # use this electric config template
# vi pigsty.yml               # IMPORTANT: CHANGE CREDENTIALS!!
# ./deploy.yml                # install pigsty & pgsql & minio
# ./docker.yml                # install docker & docker-compose
# ./app.yml                   # install electric with docker-compose

all:
  children:
    # infra cluster for proxy, monitor, alert, etc..
    infra:
      hosts: { 10.10.10.10: { infra_seq: 1 } }
      vars:

        app: electric
        apps:       # define all applications
          electric: # app name, should have corresponding ~/pigsty/app/electric folder
            conf:   # override /opt/electric/.env config file : https://electric-sql.com/docs/api/config
              DATABASE_URL: 'postgresql://electric:DBUser.Electric@10.10.10.10:5432/electric?sslmode=require'
              ELECTRIC_PORT: 8002
              ELECTRIC_PROMETHEUS_PORT: 8003
              ELECTRIC_INSECURE: true
              #ELECTRIC_SECRET: 1U6ItbhoQb4kGUU5wXBLbxvNf

    # etcd cluster for ha postgres
    etcd: { hosts: { 10.10.10.10: { etcd_seq: 1 } }, vars: { etcd_cluster: etcd } }

    # minio cluster, s3 compatible object storage
    #minio: { hosts: { 10.10.10.10: { minio_seq: 1 } }, vars: { minio_cluster: minio } }

    # postgres example cluster: pg-meta
    pg-meta:
      hosts: { 10.10.10.10: { pg_seq: 1, pg_role: primary } }
      vars:
        pg_cluster: pg-meta
        pg_users:
          - {name: electric ,password: DBUser.Electric ,pgbouncer: true , replication: true ,roles: [dbrole_admin] ,comment: electric main user }
        pg_databases: [{ name: electric , owner: electric }]
        pg_hba_rules:
          - { user: electric , db: replication ,addr: infra ,auth: ssl ,title: 'allow electric intranet/docker ssl access' }

  #==============================================================#
  # Global Parameters
  #==============================================================#
  vars:

    #----------------------------------#
    # Meta Data
    #----------------------------------#
    version: v4.5.0                   # pigsty version string
    admin_ip: 10.10.10.10             # admin node ip address
    region: default                   # upstream mirror region: default|china|europe
    node_tune: oltp                   # node tuning specs: oltp,olap,tiny,crit
    pg_conf: oltp.yml                 # pgsql tuning specs: {oltp,olap,tiny,crit}.yml

    docker_enabled: true              # enable docker on app group
    #docker_registry_mirrors: ["https://docker.1panel.live","https://docker.1ms.run","https://docker.xuanyuan.me","https://registry-1.docker.io"]

    proxy_env:                        # global proxy env when downloading packages
      no_proxy: "localhost,127.0.0.1,10.0.0.0/8,192.168.0.0/16,*.pigsty,*.aliyun.com,mirrors.*,*.myqcloud.com,*.tsinghua.edu.cn"
      # http_proxy:  # set your proxy here: e.g http://user:pass@proxy.xxx.com
      # https_proxy: # set your proxy here: e.g http://user:pass@proxy.xxx.com
      # all_proxy:   # set your proxy here: e.g http://user:pass@proxy.xxx.com
    infra_portal:                     # domain names and upstream servers
      home : { domain: i.pigsty }
      electric:
        domain: elec.pigsty
        endpoint: "${admin_ip}:8002"
        websocket: true               # apply free ssl cert with certbot: make cert
        certbot: odoo.pigsty          # <----- replace with your own domain name!

    #----------------------------------#
    # Safe Guard
    #----------------------------------#
    # you can enable these flags after bootstrap, to prevent purging running etcd / pgsql instances
    etcd_safeguard: false             # prevent purging running etcd instance?
    pg_safeguard: false               # prevent purging running postgres instance? false by default

    #----------------------------------#
    # Repo, Node, Packages
    #----------------------------------#
    repo_enabled: false
    node_repo_modules: node,infra,pgsql
    pg_version: 18                    # default postgres version
    #pg_extensions: [ pg18-time ,pg18-gis ,pg18-rag ,pg18-fts ,pg18-olap ,pg18-feat ,pg18-lang ,pg18-type ,pg18-util ,pg18-func ,pg18-admin ,pg18-stat ,pg18-sec ,pg18-fdw ,pg18-sim ,pg18-etl]

    #----------------------------------------------#
    # PASSWORD : https://pigsty.io/docs/setup/security/
    #----------------------------------------------#
    grafana_admin_password: pigsty
    grafana_view_password: DBUser.Viewer
    pg_admin_password: DBUser.DBA
    pg_monitor_password: DBUser.Monitor
    pg_replication_password: DBUser.Replicator
    patroni_password: Patroni.API
    haproxy_admin_password: pigsty
    minio_secret_key: S3User.MinIO
    etcd_root_password: Etcd.Root
...
```


--------

## Explanation

The `app/electric` template provides a one-click deployment solution for Electric SQL real-time sync service.

**What is Electric**:
- PostgreSQL to client real-time data sync service
- Supports Local-first application architecture
- Real-time syncs data changes via logical replication
- Provides HTTP API for frontend application consumption

**Key Features**:
- Uses Pigsty-managed PostgreSQL as data source
- Captures data changes via Logical Replication
- Supports SSL encrypted connections
- Built-in Prometheus metrics endpoint

**Access**:

```bash
# Electric API endpoint
http://elec.pigsty:8002

# Prometheus metrics
http://elec.pigsty:8003/metrics
```

**Use Cases**:
- Building Local-first applications
- Real-time data sync to clients
- Mobile and PWA data synchronization
- Real-time updates for collaborative applications

**Notes**:
- Electric user needs `replication` permission
- PostgreSQL logical replication must be enabled
- Production environments should use SSL connection (configured with `sslmode=require`)
