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Incident report
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Resolution: Unresolved
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Trivial
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None
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5.0.4
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None
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CentOS 7 x86_64
The new detection of the minimum interval is breaking all pings (even IPv4) if IPv6 is disabled on the server/proxy. Here's an extract of the logs on my EL7 proxy, with DebugLevel=4
oct. 08 08:39:22 adm zabbix_proxy[21669]: testing interval 1 using command "/usr/sbin/fping6 -c1 -t50 -i1 sw1.lapiole.org" oct. 08 08:39:22 adm zabbix_proxy[21669]: In zbx_popen() command:'/usr/sbin/fping6 -c1 -t50 -i1 sw1.lapiole.org' oct. 08 08:39:22 adm zabbix_proxy[21669]: End of zbx_popen():8 oct. 08 08:39:22 adm zabbix_proxy[21683]: zbx_popen(): executing script oct. 08 08:39:22 adm zabbix_proxy[21669]: In zbx_waitpid() oct. 08 08:39:22 adm zabbix_proxy[21669]: zbx_waitpid() exited, status:4 oct. 08 08:39:22 adm zabbix_proxy[21669]: End of zbx_waitpid():21683 oct. 08 08:39:22 adm zabbix_proxy[21669]: testing interval 10 using command "/usr/sbin/fping6 -c1 -t50 -i10 sw1.lapiole.org" oct. 08 08:39:22 adm zabbix_proxy[21669]: In zbx_popen() command:'/usr/sbin/fping6 -c1 -t50 -i10 sw1.lapiole.org' oct. 08 08:39:22 adm zabbix_proxy[21669]: End of zbx_popen():8 oct. 08 08:39:22 adm zabbix_proxy[21688]: zbx_popen(): executing script oct. 08 08:39:22 adm zabbix_proxy[21669]: In zbx_waitpid() oct. 08 08:39:22 adm zabbix_proxy[21669]: zbx_waitpid() exited, status:4 oct. 08 08:39:22 adm zabbix_proxy[21669]: End of zbx_waitpid():21688 oct. 08 08:39:22 adm zabbix_proxy[21669]: Cannot detect the minimum interval of /usr/sbin/fping6 oct. 08 08:39:22 adm zabbix_proxy[21669]: End of zbx_ping():NOTSUPPORTED oct. 08 08:39:22 adm zabbix_proxy[21669]: In process_values() oct. 08 08:39:22 adm zabbix_proxy[21669]: host [sw1.lapiole.org] Cannot detect the minimum interval of /usr/sbin/fping6
Then, no more pings are sent. Running the fping6 command manually fails, not because of privileges issue, but because IPv6 is completly disabled :
[root@adm ~]# /usr/sbin/fping6 -c1 -t50 -i10 sw1.lapiole.org
(null): can't create raw socket (must run as root?) : Address family not supported by protocol
[root@adm ~]#
To work arround this, I must add in my zabbix_proxy.conf :
Fping6Location=/usr/sbin/fping
This way, zabbix only tries to use the IPv4 variant, and pings works again
