rpm -qa | grep centreon
centreon-engine-18.10.0-4.el7.centos.x86_64
centreon-widget-live-top10-memory-usage-18.10.0-6.el7.centos.noarch
centreon-plugin-Applications-Databases-Mysql-20190221-145606.el7.centos.noarch
centreon-widget-live-top10-cpu-usage-18.10.0-6.el7.centos.noarch
centreon-plugin-Hardware-Ups-Standard-Rfc1628-Snmp-20190221-145606.el7.centos.noarch
centreon-clib-18.10.0-2.el7.centos.x86_64
centreon-plugin-Applications-Monitoring-Centreon-Database-20190221-145606.el7.centos.noarch
centreon-release-18.10-2.el7.centos.noarch
centreon-connector-18.10.0-2.el7.centos.x86_64
centreon-common-18.10.3-5.el7.centos.noarch
centreon-widget-servicegroup-monitoring-18.10.0-6.el7.centos.noarch
centreon-plugin-Network-Cisco-Standard-Snmp-20190221-145606.el7.centos.noarch
centreon-broker-storage-18.10.1-1.el7.centos.x86_64
centreon-pp-manager-18.10.4-1.el7.centos.noarch
centreon-engine-daemon-18.10.0-4.el7.centos.x86_64
centreon-widget-hostgroup-monitoring-18.10.0-6.el7.centos.noarch
centreon-widget-service-monitoring-18.10.0-11.el7.centos.noarch
centreon-plugin-Applications-Protocol-Ftp-20190221-145606.el7.centos.noarch
centreon-plugin-Applications-Protocol-Ldap-20190221-145606.el7.centos.noarch
centreon-plugin-Operatingsystems-Windows-Snmp-20190221-145606.el7.centos.noarch
centreon-database-18.10.3-5.el7.centos.noarch
centreon-license-manager-18.10.2-1.el7.centos.noarch
centreon-broker-cbmod-18.10.1-1.el7.centos.x86_64
centreon-18.10.3-5.el7.centos.noarch
centreon-plugin-Virtualization-Vmware2-Connector-Plugin-20190221-145606.el7.centos.noarch
centreon-plugins-base-1.18-2.el7.centos.noarch
centreon-widget-grid-map-18.10.0-6.el7.centos.noarch
centreon-trap-18.10.3-5.el7.centos.noarch
centreon-widget-host-monitoring-18.10.0-11.el7.centos.noarch
centreon-plugin-Applications-Monitoring-Centreon-Central-20190221-145606.el7.centos.noarch
centreon-widget-engine-status-18.10.0-9.el7.centos.noarch
centreon-broker-18.10.1-1.el7.centos.x86_64
centreon-plugin-Applications-Protocol-Http-20190221-145606.el7.centos.noarch
centreon-plugin-Applications-Monitoring-Centreon-Map4-Jmx-20190221-145606.el7.centos.noarch
centreon-plugin-Hardware-Printers-Generic-Snmp-20190221-145606.el7.centos.noarch
centreon-poller-centreon-engine-18.10.3-5.el7.centos.noarch
centreon-base-config-centreon-engine-18.10.3-5.el7.centos.noarch
centreon-connector-ssh-18.10.0-2.el7.centos.x86_64
centreon-connector-perl-18.10.0-2.el7.centos.x86_64
centreon-perl-libs-18.10.3-5.el7.centos.noarch
centreon-widget-tactical-overview-18.10.0-6.el7.centos.noarch
centreon-plugin-Applications-Protocol-Dns-20190221-145606.el7.centos.noarch
centreon-license-manager-common-18.10.2-1.el7.centos.noarch
centreon-broker-core-18.10.1-1.el7.centos.x86_64
centreon-web-18.10.3-5.el7.centos.noarch
centreon-broker-cbd-18.10.1-1.el7.centos.x86_64
centreon-engine-extcommands-18.10.0-4.el7.centos.x86_64
centreon-widget-graph-monitoring-18.10.0-6.el7.centos.noarch
centreon-plugin-Operatingsystems-Linux-Snmp-20190221-145606.el7.centos.noarch
centreon-plugin-Applications-Monitoring-Centreon-Poller-20190221-145606.el7.centos.noarch
centreon-plugin-Virtualization-VMWare-daemon-3.0.0-20190221161610.el7.centos.noarch
Operating System
CentOS 7 (installation done from .iso 18.10, then upgraded to the last version 18.10.3)
VMWARE ESXI
Centcore is set to start automaticcaly at boot but doesn't start
Problem appear after the upgrade from 18.10.2 to 18.10.3
[root@CENTREONSRV ~]# systemctl status centcore
● centcore.service - Centreon Core
Loaded: loaded (/usr/lib/systemd/system/centcore.service; enabled; vendor preset: disabled)
Active: inactive (dead)
[root@CENTREONSRV ~]# systemctl start centcore
[root@CENTREONSRV ~]# systemctl status centcore
● centcore.service - Centreon Core
Loaded: loaded (/usr/lib/systemd/system/centcore.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2019-03-13 11:25:49 CET; 2s ago
Main PID: 6258 (centcore)
CGroup: /system.slice/centcore.service
└─6258 /usr/bin/perl /usr/share/centreon/bin/centcore
Mar 13 11:25:49 CENTREONSRV systemd[1]: Started Centreon Core.
CentCore doesn't start automatically at boot, starting manually is working (see above)
Facing same issue with an upgrade from 18.10.2, and with a fresh 18.10.3 installation.
Also see #7246 which seems to be related.
systemctl enable centcore
actually enable centcore at boot (symlink created), but service doesn't work at boot.
Note a critical issue, more like a bug
can't find out on log what's not working
During installation, execute command : systemctl enable centreon, after other systemctl enable commands for other services (cbd, centengine, centcore ... etc).
After reboot, centcore will be properly restarted.
At first poller launch, use restart mode and not reload for engine when exporting the configuration

For the poller to run.
@lpinsivy @adr-mo Modify official documentation (installation pages but also administration > Distributed architecture)

Problem appear after the upgrade from 18.10.2 to 18.10.3
Most helpful comment
Facing same issue with an upgrade from 18.10.2, and with a fresh 18.10.3 installation.
Also see #7246 which seems to be related.