here is hawk back-end journal: -- Reboot -- Apr 10 11:20:24 node1 systemd[1]: Started HA Web Konsole Backend. Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] Puma starting in cluster mode... Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] * Version 3.11.2 (ruby 2.5.0-p0), codename: Love Song Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] * Min threads: 0, max threads: 1 Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] * Environment: production Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] * Process workers: 1 Apr 10 11:20:25 node1 puma.ruby2.5[2231]: [2231] * Preloading application Apr 10 11:20:32 node1 puma.ruby2.5[2231]: WARNING: Nokogiri was built against LibXML version 2.9.7, but has dynamically loaded 2.9.8 Apr 10 11:20:37 node1 puma.ruby2.5[2231]: [2231] * Listening on unix:///usr/share/hawk/tmp/hawk.sock Apr 10 11:20:37 node1 puma.ruby2.5[2231]: [2231] Use Ctrl-C to stop Apr 10 11:20:37 node1 puma.ruby2.5[2231]: [2231] - Worker 0 (pid: 2533) booted, phase: 0