Realm Host V2 Ha Tunnel Here

Realm is written in Rust, which makes it memory-safe and highly efficient. Unlike complex VPN solutions, Realm focuses purely on port forwarding and proxying. It is widely used in networking scenarios where users need to forward traffic from a public IP to a private server, or to manage multiple upstream connections.

Gaming traffic (UDP-heavy) can be balanced across multiple relay nodes. Realm Host V2’s UDP-over-TCP ensures that a single node failure does not disconnect players.

| Symptom | Likely Cause | Fix | |---------|--------------|-----| | Failover takes >15 seconds | Health check interval too long | Reduce interval to "500ms" | | TCP connections drop every time | No connection draining | Enable [tunnels.drain] with wait_connections = true | | Split-brain (both nodes active) | Firewall blocking VRRP packets | Allow protocol 112 (VRRP) between nodes | | etcd timeouts under load | Low disk I/O on etcd nodes | Use SSD-backed storage for etcd | realm host v2 ha tunnel

Create /etc/realm/config.toml on each backend:

[log]
level = "info"
output = "/var/log/realm.log"
[network]
no_delay = true
keep_alive = 15 Realm is written in Rust, which makes it
[[endpoints]]
listen = "0.0.0.0:8443"
remote = "127.0.0.1:22"   # Forward to local SSH, for example
[transport]
type = "tls"
[transport.tls]
cert = "/etc/realm/server.crt"
key = "/etc/realm/server.key"
 Start the service: systemctl enable realm systemctl start

Start the service:

systemctl enable realm
systemctl start realm