Configuring high availability for Hue
To enable high availabilty for Hue, you must configure at least two Hue servers, each on a different host and a load balancer. For secure connections, enable TLS/SSL and install Kerberos. Configuring Hue for high availability includes configuring Hue, Hive, and Impala.
- Provide SSH network access to host machines with a Hue Server/Kerberos Ticker Renewer role.
- Configure each Hue server to point to an external database. Cloudera recommends to use an external database for clusters with multiple Hue servers so that no matter which server is being used, the data is always accessible. In a multi-server environment with a default embedded database (one per server), the data on server "A" can appear lost when working on server "B" if the server "A" becomes unavailable (which has the Hue backend database) and vice versa.