Hi, I have a new Ubuntu 16.04 server running NET-SNMP version 5.7.3. I am seeing a bunch of snmp errors in the syslog whenever my monitoring system queries the server:
Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/freezer: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/perf_event: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/blkio: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/memory: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/pids: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/cpuset: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/cpu,cpuacct: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/devices: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/net_cls,net_prio: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/hugetlb: Permission denied Aug 30 17:25:30 server01 snmpd[3398]: Cannot statfs /run/lxcfs/controllers/name=systemd: Permission denied These errors seem to occur when the hrFSTable is retrieved: $ snmpwalk -On -v 2c -c public 350ec-server01 .1.3.6.1.2.1.25.3.8 will trigger the issue for example. The devices are listed in /proc/mounts: $ cat /proc/mounts | grep /run/lxc tmpfs /run/lxcfs/controllers tmpfs rw,relatime,size=100k,mode=700 0 0 freezer /run/lxcfs/controllers/freezer cgroup rw,relatime,freezer 0 0 perf_event /run/lxcfs/controllers/perf_event cgroup rw,relatime,perf_event 0 0 blkio /run/lxcfs/controllers/blkio cgroup rw,relatime,blkio 0 0 memory /run/lxcfs/controllers/memory cgroup rw,relatime,memory 0 0 pids /run/lxcfs/controllers/pids cgroup rw,relatime,pids 0 0 cpuset /run/lxcfs/controllers/cpuset cgroup rw,relatime,cpuset 0 0 cpu,cpuacct /run/lxcfs/controllers/cpu,cpuacct cgroup rw,relatime,cpu,cpuacct 0 0 devices /run/lxcfs/controllers/devices cgroup rw,relatime,devices 0 0 net_cls,net_prio /run/lxcfs/controllers/net_cls,net_prio cgroup rw,relatime,net_cls,net_prio 0 0 hugetlb /run/lxcfs/controllers/hugetlb cgroup rw,relatime,hugetlb 0 0 name=systemd /run/lxcfs/controllers/name=systemd cgroup rw,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd 0 0 and $ ls -ld /run/lxcfs drwx------ 3 root root 60 Aug 10 15:09 /run/lxcfs So it makes sense that snmp can't read that directory. I tried "ignoredisk /run/lxcfs/*" in the snmpd.conf file but that didn't help. The question is, can I configure snmpd to ignore those mounts? Thanks. -- Bud
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