Steps to reproduce:

1. lsof of zabbix_agentd.log

   [root@centos8s logrotate.d]# lsof | grep zabbix_agentd.log
   zabbix_ag    806                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    806                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    811                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    811                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    812                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    812                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    813                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    813                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    814                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    814                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    815                 zabbix    1w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    815                 zabbix    2w      REG              253,0      264398  268438529 /var/log/zabbix/zabbix_agentd.log
   [root@centos8s logrotate.d]#
   

2. logrotate with default logrotate rule

   [root@centos8s logrotate.d]# logrotate -f /etc/logrotate.d/zabbix-agent
   

3. Zabbix continues to hold onto the old rotated file(zabbix_ag 806 zabbix 1w REG 253,0 264536 268438529 /var/log/zabbix/zabbix_agentd.log.1
   zabbix_ag 806 zabbix 2w REG 253,0 264536 268438529 /var/log/zabbix/zabbix_agentd.log.1)

   [root@centos8s logrotate.d]# lsof | grep zabbix_agentd.log
   zabbix_ag    806                 zabbix    1w      REG              253,0      264536  268438529 /var/log/zabbix/zabbix_agentd.log.1
   zabbix_ag    806                 zabbix    2w      REG              253,0      264536  268438529 /var/log/zabbix/zabbix_agentd.log.1
   zabbix_ag    811                 zabbix    1w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    811                 zabbix    2w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    812                 zabbix    1w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    812                 zabbix    2w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    813                 zabbix    1w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    813                 zabbix    2w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    814                 zabbix    1w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    814                 zabbix    2w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    815                 zabbix    1w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   zabbix_ag    815                 zabbix    2w      REG              253,0           0  268438553 /var/log/zabbix/zabbix_agentd.log
   [root@centos8s logrotate.d]#