vfs.dev.discovery is failing but works with zabbix_agentd

[lpossamai]

Hello,

The

Linux block devices by Zabbix agent: Block devices discovery

discovery works for some hosts, but it's not working for one that has been recently added.

All the hosts are running the same version of Zabbix Agent:

5.4.0-1+ubuntu16.04

The Zabbix Server version is: 5.4.2

In the logs, I see the following:

1936050:20210719:052456.219 In get_value() key:'[B]vfs.dev.discovery[/B]'
1936050:20210719:052456.219 In get_value_agent() host:'pgsql-aws-11.example.com' addr:'pgsql-aws-11-internal.example.com' key:'[B]vfs.dev.discovery[/B]' conn:'unencrypted'
1936050:20210719:052456.222 Sending [[B]vfs.dev.discovery[/B]]
1936050:20210719:052456.223 Item [pgsql-aws-11.example.com:[B]vfs.dev.discovery[/B]] error: Unsupported item key.

Running

zabbix_agentd -t vfs.fs.discovery

returns:

vfs.fs.discovery [s|[{"{#FSNAME}":"/sys","{#FSTYPE}":"sysfs"},{"{#FSNAME}":"/proc","{#FSTYPE}":"proc"},{"{#FSNAME}":"/dev","{#FSTYPE}":"devtmpfs"},{"{#FSNAME}":"/dev/pts","{#FSTYPE}":"devpts"},{"{#FSNAME}":"/run","{#FSTYPE}":"tmpfs"},{"{#FSNAME}":"/","{#FSTYPE}":"ext4"},{"{#FSNAME}":"/sys/kernel/security","{#FSTYPE}":"securityfs"},{"{#FSNAME}":"/dev/shm","{#FSTYPE}":"tmpfs"},{"{#FSNAME}":"/run/lock","{#FSTYPE}":"tmpfs"},{"{#FSNAME}":"/sys/fs/cgroup","{#FSTYPE}":"tmpfs"},{"{#FSNAME}":"/sys/fs/cgroup/systemd","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/pstore","{#FSTYPE}":"pstore"},{"{#FSNAME}":"/sys/fs/cgroup/cpuset","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/cpu,cpuacct","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/net_cls,net_prio","{#FSTYPE}":"cgroup"},{"{#FSNAME }":"/sys/fs/cgroup/pids","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/devices","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/hugetlb","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/freezer","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/memory","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/perf_event","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/sys/fs/cgroup/blkio","{#FSTYPE}":"cgroup"},{"{#FSNAME}":"/proc/sys/fs/binfmt_misc","{#FSTYPE}":"autofs"},{"{#FSNAME}":"/dev/mqueue","{#FSTYPE}":"mqueue"},{"{#FSNAME}":"/sys/kernel/debug","{#FSTYPE}":"debugfs"},{"{#FSNAME}":"/dev/hugepages","{#FSTYPE}":"hugetlbfs"},{"{#FSNAME}":"/run/rpc_pipefs","{#FSTYPE}":"rpc_pipefs"},{"{#FSNAME}" :"/sys/fs/fuse/connections","{#FSTYPE}":"fusectl"},{"{#FSNAME}":"/pgsql","{#FSTYPE}":"ext4"},{"{#FSNAME}":"/data","{#FSTYPE}":"ext4"},{"{#FSNAME}":"/var/lib/lxcfs","{#FSTYPE}":"fuse.lxcfs"},{"{#FSNAME}":"/run/user/999","{#FSTYPE}":"tmpfs"},{"{#FSNAME}":"/run/user/1008","{#FSTYPE}":"tmpfs"}]]

What am I missing here?

[lpossamai]

Hmm... I have executed a

apt updated -y && apt upgrade -y && systemctl restart zabbix_agent

and that fixed the problem.