Enter combined with a High Availability (HA) Tunnel setup. While standard Realm Host provides a robust, cross-platform (Windows, macOS, Linux) reverse proxy and tunnel solution, the "V2 HA Tunnel" architecture elevates it into carrier-grade territory.
This article dissects every component of the Realm Host V2 HA Tunnel. You will learn what it is, how the architecture works, step-by-step configuration for active-passive and active-active clusters, and advanced troubleshooting. Before diving into HA tunnels, we must understand the core tool. realm host v2 ha tunnel
, use state BACKUP and priority 100 . This ensures the VIP floats only to the node where the Realm daemon is healthy. Step 4: Systemd Service for Automatic Restarts Create /etc/systemd/system/realm-ha.service : Enter combined with a High Availability (HA) Tunnel setup
[Unit] Description=Realm Host V2 HA Tunnel After=network-online.target etcd.service keepalived.service [Service] Type=simple User=realm Group=realm ExecStartPre=/bin/mkdir -p /var/log/realm ExecStart=/usr/local/bin/realm -c /etc/realm/config.toml Restart=on-failure RestartSec=10 LimitNOFILE=65536 You will learn what it is, how the
[Install] WantedBy=multi-user.target
vrrp_script chk_realm script "/usr/local/bin/realm health check --port 8443" interval 2 fall 2 rise 2
vrrp_instance VI_1 state MASTER interface eth0 virtual_router_id 51 priority 101 advert_int 1 authentication auth_type PASS auth_pass realmHA2024 virtual_ipaddress 203.0.113.10/24 dev eth0 label eth0:vip track_script chk_realm