Nagios services are turning off

[ITOMB_IMT]

HI,

we are hosting XI 5.6.3 on RHEL 7.5. Recently we upgraded from 5.6.1 to 5.6.3, since then the services(nagios, npcd, ndo2db) were dead. even we try to start them they will be active for a while and keep dead again. any thing to be checked.

Thanks,

[cdienger]

Disk space:

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df -h

load:

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top

logs:

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/var/log/messages
/usr/local/nagios/var/npcd.log
/usr/local/nagios/var/nagios.log
/usr/local/nagios/var/perfdata.log
/var/log/mysqld.log
/var/log/mariadb/mariadb.log
/var/log/cron