No data coming in after updating templates.

[h_y_i_e_n]

I have the following setup (all running Ubuntu 20.04, Zabbix 4.0.17 from the standard Ubuntu repo)

zabbix server: 10.0.0.1
proxy1 10.0.0.2 (passive mode)
proxy2 10.0.0.3 (passive mode)

test machines with zabbix agent installed:
demo1 10.0.0.4
demo2 10.0.0.5

/etc/zabbix/zabbix_server.conf for zabbix_server
LogFile=/var/log/zabbix-server/zabbix_server.log
PidFile=/run/zabbix/zabbix_server.pid
DBName=zabbix
DBUser=zabbix
DBPassword=XXXXX
Timeout=4
AlertScriptsPath=/etc/zabbix/alert.d/
FpingLocation=/usr/bin/fping
LogSlowQueries=3000
Include=/etc/zabbix/zabbix_server.conf.d/*.conf


/etc/zabbix/zabbix_proxy.conf for proxy1 and proxy2
ProxyMode=1
Server=10.0.0.0/24
LogFile=/var/log/zabbix-proxy/zabbix_proxy.log
PidFile=/run/zabbix/zabbix_proxy.pid
DBName=zabbix_proxy
DBUser=zabbix
DBPassword=XXXXXX
Timeout=4
FpingLocation=/usr/bin/fping
Fping6Location=/usr/bin/fping6
LogSlowQueries=3000
Include=/etc/zabbix/zabbix_proxy.conf.d/*.conf

/etc/zabbix/zabbix_agent.conf for test machines:
PidFile=/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix-agent/zabbix_agentd.log
LogFileSize=0
Server=10.0.0.0/24
Include=/etc/zabbix/zabbix_agentd.conf.d/*.conf

when i add new items or hosts, it doesnt appear to poll the new items.
the item names do show, but the item values are all blank in the latest monitoring data page.

[tim.mooney]

Have you waited at least 3600 seconds for the proxies to pick up the new items from the server? See ProxyConfigFrequency in the zabbix_server.conf.

Is this a brand new install, or an existing install that's just been modified, and it's only the modified items that aren't working?

Any particular reason you're using CIDR notation for the Server setting on the proxies?

[h_y_i_e_n]

Have you waited at least 3600 seconds for the proxies to pick up the new items from the server? See ProxyConfigFrequency in the zabbix_server.conf.

Is this a brand new install, or an existing install that's just been modified, and it's only the modified items that aren't working?

Any particular reason you're using CIDR notation for the Server setting on the proxies?

Thanks for the response. ProxyConfigFrequency was the problem.