Options like MinIO (self-hosted) or AWS S3 are the gold standard for HARP Nextcloud deployments. Object storage scales infinitely and natively handles high availability and replication.
Nextcloud requires background jobs to handle tasks like file indexing, activity notifications, and trash bin emptying. By default, Nextcloud uses standard web-based AJAX cron, which triggers during user navigation. For a HARP ecosystem, this must be disabled.
Some users have reported issues with newer Docker versions (29.0.0 and above) breaking HaRP connectivity. If you encounter this, check the GitHub issues for your specific Docker version and consider rolling back to a known-compatible version or applying community-discovered workarounds.
It routes client requests directly to External Apps (ExApps) , drastically reducing latency and freeing up server resources. harp nextcloud
HaRP supports local setups or remote deployments, allowing users to offload heavy workloads (like AI processing on GPUs) to separate machines. Key Benefits
Historically, when Nextcloud introduced its Nextcloud AppAPI , it relied heavily on a . While DSP allowed containers to be spun up dynamically, it introduced substantial network friction:
One of HaRP's primary advantages is enabling end-to-end WebSocket traffic. This eliminates the need for inefficient polling, allowing for cleaner real-time architectures in Nextcloud Hub. 3. Deployment and Security HaRP is designed to be highly secure and flexible: Options like MinIO (self-hosted) or AWS S3 are
The secure ingestion port where ExApps establish their reverse connection.
docker run \ -e HP_SHARED_KEY="some_very_secure_password" \ -e NC_INSTANCE_URL="http://nextcloud.local" \ -v /var/run/docker.sock:/var/run/docker.sock \ -v `pwd`/certs:/certs \ --name appapi-harp -h appapi-harp \ --restart unless-stopped \ -p 8780:8780 \ -p 8782:8782 \ -d ghcr.io/nextcloud/nextcloud-appapi-harp:release
What is your estimated and expected concurrent active sessions ? By default, Nextcloud uses standard web-based AJAX cron,
Changes made by one user are propagated immediately to others, with content updating in real time.
'oc_harpinstance', 'passwordsalt' => 'RandomSaltGeneratedBySystem', 'secret' => 'RandomSecretGeneratedBySystem', 'trusted_domains' => array ( 0 => '://example.com', ), // Database Configuration pointing to the Cluster Load Balancer 'dbtype' => 'mysql', 'version' => '28.0.0', 'dbname' => 'nextcloud_harp', 'dbhost' => 'db-cluster-lb.example.internal:3306', 'dbuser' => 'harp_user', 'dbpassword' => 'YourSecurePassword', 'dbtableprefix' => 'oc_', // High Availability Distributed Redis Configuration 'memcache.local' => '\OC\Memcache\APCu', 'memcache.distributed' => '\OC\Memcache\Redis', 'memcache.locking' => '\OC\Memcache\Redis', 'redis.cluster' => array( 'seeds' => array( 'redis-node1.example.internal:6379', 'redis-node2.example.internal:6379', 'redis-node3.example.internal:6379', ), 'timeout' => 0.0, 'read_timeout' => 0.0, 'failover_mode' => \RedisCluster::FAILOVER_DISTRIBUTE, ), // Primary S3 Object Storage Config 'objectstore' => array( 'class' => '\\OC\\Files\\ObjectStore\\S3', 'arguments' => array( 'bucket' => 'nextcloud-harp-storage', 'autocreate' => false, 'key' => 'YOUR_S3_ACCESS_KEY', 'secret' => 'YOUR_S3_SECRET_KEY', 'hostname' => 's3.example.internal', 'port' => 9000, 'use_ssl' => true, 'region' => 'us-east-1', 'use_path_style'=> true, ), ), 'installed' => true, ); Use code with caution. Step 5: Replicate the Web Nodes
(High-performance AppAPI Reverse Proxy) is the modern proxy system introduced for Nextcloud 32+
common deployment errors (like the 404/Invalid request path). Walk through a Docker Compose file for setting up HaRP. What would be most helpful for your setup? Installing Harp for ExApps: Can't Connect from Nextcloud
