配置自定义监控K值时，出现下面错误提示
[root@manage ~]# zabbix_get -s 101.221.155.218 -p -k "login_user"
zabbix_get []: Check access restrictions in Zabbix agent configuration
可能性一、zabbix_get命令使用场景
zabbix的服务器端与客户端连接的主要工具就是zabbix里bin文件夹下的zabbix_get文件，这个命令只能在zabbix的server端使用，如果在agent端使用就会提示如下的错误：
zabbix_get []: Check access restrictions in Zabbix agent configuration
可能性二、未连接zabbix客户端
zabbix_get命令使用方法：
zabbix_get -s 127.0.0.1 -p -k "system.cpu.load[all,avg1]"
注意： -s后面接的是目标地址，-p后面要加端口号，这个一般都是10050, -I 后面加原地址，不过这个一般用不上，-k 后面接的就是item项目里的key。
如果zabbix客户端配置的是内网地址，那么这里使用公网地址，也会出现“Check access restrictions in Zabbix agent configuration”的问题；这里的-k注意必须是zabbix_agent.conf中Server配置指向的地址。
[root@manage ~]# zabbix_get -s 191.201.185.218 -p -k "login_user"
zabbix_get []: Check access restrictions in Zabbix agent configuration
#排除客户端连接不通的可能性
[root@manage ~]# ping 191.201.185.218
PING 191.201.185.218 (101.201.185.218) () bytes of data.
bytes from 191.201.185.218: icmp_seq= ttl= time=1.27 ms
bytes from 191.201.185.218: icmp_seq= ttl= time=1.24 ms
##使用zabbix客户端的内网地址，因为我的zabbix_agent.conf配置的是内网地址
[root@manage ~]# zabbix_get -s 10.45.199.182 -p -k "login_user"
##成功获取到K值
zabbix_get使用方法：
[root@manage ~]# zabbix_get -help
usage:
zabbix_get -s host-name-or-IP [-p port-number] [-I IP-address] -k item-key
zabbix_get -s host-name-or-IP [-p port-number] [-I IP-address]
--tls-connect cert --tls-ca-file CA-file
[--tls-crl-file CRL-file] [--tls-agent-cert-issuer cert-issuer]
[--tls-agent-cert-subject cert-subject]
--tls-cert-file cert-file --tls-key-file key-file -k item-key
zabbix_get -s host-name-or-IP [-p port-number] [-I IP-address]
--tls-connect psk --tls-psk-identity PSK-identity
--tls-psk-file PSK-file -k item-key
zabbix_get -h
zabbix_get -V Get data from Zabbix agent. General options:
-s --host host-name-or-IP Specify host name or IP address of a host
-p --port port-number Specify port number of agent running on the host
(default: )
-I --source-address IP-address Specify source IP address -k --key item-key Specify key of the item to retrieve value for -h --help Display this help message
-V --version Display version number TLS connection options:
--tls-connect value How to connect to agent. Values:
unencrypted - connect without encryption
(default)
psk - connect using TLS and a pre-shared
key
cert - connect using TLS and a
certificate --tls-ca-file CA-file Full pathname of a file containing the top-level
CA(s) certificates for peer certificate
verification --tls-crl-file CRL-file Full pathname of a file containing revoked
certificates --tls-agent-cert-issuer cert-issuer Allowed agent certificate issuer --tls-agent-cert-subject cert-subject Allowed agent certificate subject --tls-cert-file cert-file Full pathname of a file containing the certificate
or certificate chain --tls-key-file key-file Full pathname of a file containing the private key --tls-psk-identity PSK-identity Unique, case sensitive string used to
identify the pre-shared key --tls-psk-file PSK-file Full pathname of a file containing the pre-shared
key Example(s):
zabbix_get -s 127.0.0.1 -p -k "system.cpu.load[all,avg1]" zabbix_get -s 127.0.0.1 -p -k "system.cpu.load[all,avg1]" \
--tls-connect cert --tls-ca-file /home/zabbix/zabbix_ca_file \
--tls-agent-cert-issuer \
"CN=Signing CA,OU=IT operations,O=Example Corp,DC=example,DC=com" \
--tls-agent-cert-subject \
"CN=server1,OU=IT operations,O=Example Corp,DC=example,DC=com" \
--tls-cert-file /home/zabbix/zabbix_get.crt \
--tls-key-file /home/zabbix/zabbix_get.key zabbix_get -s 127.0.0.1 -p -k "system.cpu.load[all,avg1]" \
--tls-connect psk --tls-psk-identity "PSK ID Zabbix agentd" \
--tls-psk-file /home/zabbix/zabbix_agentd.psk Report bugs to: <https://support.zabbix.com>
Zabbix home page: <http://www.zabbix.com>
Documentation: <https://www.zabbix.com/documentation>
当然出现这种错误还有可能是其他的原因，不断补充中。。