Same problem; tons of:
"Error while registering computer:SOAP 1.1 fault SOAP-ENV:Server[no subcode]#012"Try Again"#012Detail: get host by name failed in tcp_connect()"
in my logfile.
===
dig ws0.pulseway.com
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.1 <<>> ws0.pulseway.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5223
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;ws0.pulseway.com. IN A
;; ANSWER SECTION:
ws0.pulseway.com. 14464 IN CNAME lb.pulseway.com.
lb.pulseway.com. 14464 IN A 69.65.47.165
lb.pulseway.com. 14464 IN A 69.65.47.163
;; Query time: 19 msec
;; SERVER: 10.22.2.254#53(10.22.2.254)
;; WHEN: Tue Oct 23 12:21:49 2018
;; MSG SIZE rcvd: 83
===