Note: This article has the reference to the issue with the fix available:
"In some cases, a subscription could not be created via the Plesk user interface and a confusing error message appeared."
- Plesk Onyx 17.5.3 23 March 2017 (Linux)
Unable to provision "Plesk Domain" orders in OBAS, it fails with the following message:
Could not connect to Plesk Agent host or response is empty
Unable to create a subscription in Plesk, the following error occurrs in Plesk interface:
the following can be found:
kernel: sw-engine-fpm: segfault at 0 ip 00000000008b4bb2 sp 00007ffe524c3e30 error 4 in sw-engine-fpm[400000+d71000]
[error] 43188#0: *7368 readv() failed (104: Connection reset by peer) while reading upstream, client: 18.104.22.168, server: , request: "POST /admin/subscription/create HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "22.214.171.124:8880", referrer: "http://126.96.36.199:8880/admin/subscription/create"
WARNING: pid 47592, fpm_children_bury(), line 252: [pool plesk] child 54704 exited on signal 11 (SIGSEGV - core dumped) after 52.948801 seconds from start
NOTICE: pid 47592, fpm_children_make(), line 421: [pool plesk] child 55262 started
This is Plesk internal issue with ID #PPPM-4524 , which was fixed in Plesk Onyx 17.5.3 .
Upgrade to the latest Plesk version .
As a workaround:
Make a backup of
# cp /usr/sbin/sw-engine-fpm /usr/sbin/sw-engine-fpm_back
Download attached custom fix:
Place it into the server and unzip archive:
# cd /root/
# wget https://support.plesk.com/hc/en-us/article_attachments/115004352765/sw-engine-fpm.zip # for Plesk 12.0.18
# wget https://support.plesk.com/hc/en-us/article_attachments/115001171845/sw-engine-fpm.zip # for Plesk 12.5.30
# unzip sw-engine-fpm.zip
sw-engine-fpmwith custom fix:
# cp sw-engine-fpm /usr/sbin/sw-engine-fpm
# service sw-cp-server restart
# service sw-engine restart