TL;DR Broken SSDs: SAMSUNG MZ7WD480HCGM-00003 SAMSUNG MZ7GE480HMHP-00003 SAMSUNG MZ7GE240HMGR-00003 Samsung SSD 840 PRO Series recently blacklisted for 8-series blacklist Samsung SSD 850 PRO 512GB recently blacklisted as 850 Pro and later in 8-series blacklist Working SSDs: Intel S3500 Intel S3700 Intel S3710
dnsmasq is a small DNS server easy to configure.
Service started well with the init file, but stop or restart didn't. In the end the cause was a different path to the pid file in the nginx.conf and the init script. Make sure they both point to the same location.