[ZBX-16147] Discovery with External Script in Zabbix - doesn't work. Created: 2019 May 20  Updated: 2019 May 20  Resolved: 2019 May 20

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Server (S)
Affects Version/s: 4.0.7
Fix Version/s: None

Type: Problem report Priority: Major
Reporter: Vadims Kurmis Assignee: Zabbix Support Team
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

CentOS 7

Attachments: PNG File image-2019-05-20-14-57-50-953.png     PNG File image-2019-05-20-15-01-05-450.png    

 Description   

Steps to reproduce:

  1. Shell script outputs correct JSON data.
  2. Script execution takes 5-6 seconds, it showed Timeout at first, then I changed in zabbix_server.conf Timeout to 28.

This is the output JSON from script:

 

 
{"data":[
{"{#VOLNAME}":"NFS_demo_root","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1034"},
{"{#VOLNAME}":"VMware_AFF","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1038"},
{"{#VOLNAME}":"FC_demo_root","{#VSERVER}":"FC_demo","{#SNMPINDEX}":"1040"},
{"{#VOLNAME}":"FC_Windown_boot_lun","{#VSERVER}":"FC_demo","{#SNMPINDEX}":"1042"},
{"{#VOLNAME}":"SQL_DB","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1102"},
{"{#VOLNAME}":"SQL_LOG","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1104"},
{"{#VOLNAME}":"SQL_snapinfo","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1106"},
{"{#VOLNAME}":"SQL_snapinfo_dr","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1112"},
{"{#VOLNAME}":"SQL_snapinfo_dr2","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1138"},
{"{#VOLNAME}":"VMware_AFF2","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1198"},
{"{#VOLNAME}":"NetAppDemo","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1248"},
{"{#VOLNAME}":"NFS_root","{#VSERVER}":"NFS_2","{#SNMPINDEX}":"1258"},
{"{#VOLNAME}":"Testlab_NFS2","{#VSERVER}":"NFS_2","{#SNMPINDEX}":"1260"},
{"{#VOLNAME}":"Security_root","{#VSERVER}":"Security","{#SNMPINDEX}":"1276"},
{"{#VOLNAME}":"security_demo","{#VSERVER}":"Security","{#SNMPINDEX}":"1278"},
{"{#VOLNAME}":"Oracle_root","{#VSERVER}":"Oracle","{#SNMPINDEX}":"1330"},
{"{#VOLNAME}":"oracle_db","{#VSERVER}":"Oracle","{#SNMPINDEX}":"1332"},
{"{#VOLNAME}":"iSCSI_demo_root","{#VSERVER}":"iSCSI_demo","{#SNMPINDEX}":"1376"},
{"{#VOLNAME}":"Exchange_root","{#VSERVER}":"Exchange","{#SNMPINDEX}":"1400"},
{"{#VOLNAME}":"exchange_db","{#VSERVER}":"Exchange","{#SNMPINDEX}":"1402"},
{"{#VOLNAME}":"exchange_log","{#VSERVER}":"Exchange","{#SNMPINDEX}":"1404"},
{"{#VOLNAME}":"FC_TEST_root","{#VSERVER}":"FC_TEST","{#SNMPINDEX}":"1442"},
{"{#VOLNAME}":"ora_data","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1750"},
{"{#VOLNAME}":"ora_control","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1752"},
{"{#VOLNAME}":"ora_logs","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1754"},
{"{#VOLNAME}":"ora_home","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"1758"},
{"{#VOLNAME}":"CIFS_root","{#VSERVER}":"CIFS_A","{#SNMPINDEX}":"1878"},
{"{#VOLNAME}":"Backup","{#VSERVER}":"CIFS_A","{#SNMPINDEX}":"1880"},
{"{#VOLNAME}":"Backup_AS","{#VSERVER}":"CIFS_A","{#SNMPINDEX}":"1882"},
{"{#VOLNAME}":"install","{#VSERVER}":"CIFS_A","{#SNMPINDEX}":"1884"},
{"{#VOLNAME}":"NFS_root","{#VSERVER}":"NFS_1","{#SNMPINDEX}":"1888"},
{"{#VOLNAME}":"Testlab_AS","{#VSERVER}":"NFS_1","{#SNMPINDEX}":"1890"},
{"{#VOLNAME}":"Testlab_NFS","{#VSERVER}":"NFS_1","{#SNMPINDEX}":"1892"},
{"{#VOLNAME}":"linux_boot_vol","{#VSERVER}":"FC_demo","{#SNMPINDEX}":"1952"},
{"{#VOLNAME}":"iSCSI_boot_root","{#VSERVER}":"iSCSI_boot","{#SNMPINDEX}":"1986"},
{"{#VOLNAME}":"hv_boot_vol","{#VSERVER}":"iSCSI_boot","{#SNMPINDEX}":"1988"},
{"{#VOLNAME}":"esxi_boot_vol","{#VSERVER}":"iSCSI_boot","{#SNMPINDEX}":"1990"},
{"{#VOLNAME}":"commvault","{#VSERVER}":"NFS_2","{#SNMPINDEX}":"2108"},
{"{#VOLNAME}":"hv_scvmn_vol","{#VSERVER}":"iSCSI_boot","{#SNMPINDEX}":"2110"},
{"{#VOLNAME}":"audit_test","{#VSERVER}":"CIFS_A","{#SNMPINDEX}":"2112"},
{"{#VOLNAME}":"rdmtest10_vol","{#VSERVER}":"iSCSI_boot","{#SNMPINDEX}":"2120"},
{"{#VOLNAME}":"zabbix","{#VSERVER}":"NFS_2","{#SNMPINDEX}":"2122"},
{"{#VOLNAME}":"NFS_demo_2","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"2236"},
{"{#VOLNAME}":"vvol_datastore_nfs","{#VSERVER}":"NFS_demo","{#SNMPINDEX}":"2252"}
]}
 

 

Result:

 

See screenshot...

What is interesting, the same script works fine for Cisco switches.

But cisco switches return JSON data from SNMP queries a bit faster. (2-3 seconds, never triggered timeout)

Does zabbix try to parse JSON data from err stream too?

How can I get the resulting string which Zabbix gets from the script? It says just that should be JSON format, but it actually is a valid JSON format.
Expected:
This should just work.

 Comments   
Comment by Vadims Kurmis [ 2019 May 20 ]

In zabbix_server.log:

 

 31148:20190520:160055.353 discovery rule "netapp.test.lv:multi-macro-discovery.sh["192.168.*.*","161","public","2c","{#VOLNAME}",".1.3.6.1.4.1.789.1.4.4.1.2","{#VSERVER}",".1.3.6.1.4.1.789.1.5.8.1.14"]" became not supported: Value should be a JSON object.

But Value IS a JSON object.

 

Comment by Vadims Kurmis [ 2019 May 20 ]

Managed to solve using regular SNMP v2 discovery. Issue can be closed.

Comment by Vadims Kurmis [ 2019 May 20 ]

Cannot reproduce. Solved by SNMP discovery.

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