Apache stopping with sigwinch on librenms

apache runs for a bit then dies off. the host is a redhat 7.x vm
I found
[Mon May 07 12:52:37.922485 2018] [core:notice] [pid 30723] AH00094: Command line: ‘/usr/sbin/httpd -D FOREGROUND’
[Mon May 07 13:39:58.708179 2018] [mpm_prefork:notice] [pid 30723] AH00170: caught SIGWINCH, shutting down gracefully
[Mon May 07 14:28:32.918627 2018] [core:notice] [pid 12112] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t:s0
[Mon May 07 14:28:32.922365 2018] [suexec:notice] [pid 12112] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Mon May 07 14:28:32.993139 2018] [auth_digest:notice] [pid 12112] AH01757: generating secret for digest authentication …
[Mon May 07 14:28:33.131376 2018] [mpm_prefork:notice] [pid 12112] AH00163: Apache/2.4.6 (Red Hat Enterprise Linux) PHP/7.2.4 configured – resuming normal operations
[Mon May 07 14:28:33.131480 2018] [core:notice] [pid 12112] AH00094: Command line: ‘/usr/sbin/httpd -D FOREGROUND’
[Mon May 07 14:39:55.965149 2018] [mpm_prefork:notice] [pid 12112] AH00170: caught SIGWINCH, shutting down gracefully

any ideas appreciated…