Realm Host V2 Ha Tunnel Free -

Based on the keywords provided, here is informative text regarding Realm, specifically focusing on Version 2, High Availability (HA) setups, and Tunneling.

2.1 The Client-Side HA Tunnel

Your local Realm client maintains two simultaneous TLS connections to two different backend servers (Server A & Server B). If Server A responds with 5xx or a connection timeout, Realm V2 automatically fails over to Server B without dropping the outer TCP session.

Step 3: Set Up VIP Management (VRRP with Keepalived)

Install Keepalived on both nodes:

sudo apt install keepalived

On realm-ha-01 (/etc/keepalived/keepalived.conf):

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
vrrp_script chk_realm 
script "/usr/local/bin/realm health check --port 8443"
interval 2
fall 2
rise 2
 realm host v2 ha tunnel

On realm-ha-02, use state BACKUP and priority 100. This ensures the VIP floats only to the node where the Realm daemon is healthy. Based on the keywords provided, here is informative

4. IoT Device Connectivity

Devices in the field (e.g., solar inverters, vending machines) often have flaky 4G connections. An HA tunnel with two redundant cloud relays keeps telemetry flowing.