Agent gray on server, values can be read on proxy, no log errors

[1berto]

Agent log:
5244:20190613:131930.898 IPv6 support: YES
5244:20190613:131930.898 TLS support: NO
5244:20190613:131930.898 **************************
5244:20190613:131930.898 using configuration file: /etc/zabbix/zabbix-agentd.conf
5244:20190613:131930.898 agent #0 started [main process]
5250:20190613:131930.899 agent #1 started [collector]
5251:20190613:131930.899 agent #2 started[listener #1]
5252:20190613:131930.899 agent #3 started[listener #2]
5253:20190613:131930.899 agent #4 started[listener #3]
5254:20190613:131930.899 agent #5 started [active checks #1]

Proxy log:
$ sudo tail -f /var/log/zabbix/zabbix_proxy.log
74026:20190613:131914.646 proxy #1415 started [icmp pinger #507]
74027:20190613:131914.647 proxy #1416 started [icmp pinger #508]
74028:20190613:131914.647 proxy #1417 started [icmp pinger #509]
74029:20190613:131914.648 proxy #1418 started [icmp pinger #510]
74030:20190613:131914.649 proxy #1419 started [icmp pinger #511]
74031:20190613:131914.650 proxy #1420 started [icmp pinger #512]
74032:20190613:131914.651 proxy #1421 started [preprocessing manager #1]
74034:20190613:131915.053 proxy #1423 started [preprocessing worker #2]
74035:20190613:131915.054 proxy #1424 started [preprocessing worker #3]
74033:20190613:131915.153 proxy #1422 started [preprocessing worker #1]
71706:20190613:132412.838 received configuration data from server at "zabbix_server", datalen 3817

Server log:
1917:20190613:132735.802 sending configuration data to proxy "proxy_address" at "X.X.X.X", datalen 3681

zabbix_agentd.conf
HostnameItem=system.hostname

Server=proxy
ServerActive=proxy


EnableRemoteCommands=1
RefreshActiveChecks=60
Timeout=30
AllowRoot=1
DebugLevel=3



zabbix_proxy.conf
ProxyMode=0
Server=server_address
HostnameItem=system.hostname
LogFile=/var/log/zabbix/zabbix_proxy.log
LogFileSize=10
DebugLevel=3
EnableRemoteCommands=1
PidFile=/var/run/zabbix/zabbix_proxy.pid
SocketDir=/var/run/zabbix
DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=db_password
DBPort=3306
HeartbeatFrequency=60
ConfigFrequency=300
DataSenderFrequency=60


zabbix_server.conf
LogFile=/var/log/zabbix/zabbix_server.log
LogFileSize=10
DebugLevel=3
PidFile=/var/run/zabbix/zabbix_server.pid
SocketDir=/var/run/zabbix
DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=db_password
DBPort=3306
StartPollers=32
StartPollersUnreachable=128
StartTrappers=16
StartPingers=16
SNMPTrapperFile=/var/log/snmptrap/snmptrap.log
HousekeepingFrequency=0
CacheSize=1G

[1berto]

SOLVED, Just need to link a Template to the Host