[ZBX-20315] Host does not exist error when trying to import 5.4.8 Linux SNMP template Created: 2021 Dec 04  Updated: 2021 Dec 07  Resolved: 2021 Dec 07

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Templates (T)
Affects Version/s: 5.4.8
Fix Version/s: None

Type: Problem report Priority: Trivial
Reporter: Markus Birth Assignee: Oleksii Zagorskyi
Resolution: Software failure Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Docker: zabbix/zabbix-server-pgsql:alpine-latest as of 2021-12-03
Docker: zabbix/zabbix-web-nginx-pgsql:alpine-latest as of 2021-12-03

Attachments: PNG File Screenshot 2021-12-06 at 12.28.00.png     File template_os_linux_snmp_snmp.yaml    
Issue Links:
Duplicate

 Description   

Steps to reproduce:

  1. Delete existing SNMP templates
  2. Download https://github.com/zabbix/zabbix/tree/5.4.8/templates/ as ZIP and unpack
  3. Import/Upgrade ICMP Ping (works fine)
  4. Import EtherLike-MIB SNMP (works fine)
  5. Import Generic SNMP (works fine)
  6. Import Interfaces SNMP (works fine)
  7. Import Linux SNMP

Result:

"Import failed" error:

  • Incorrect trigger expression. Host "Linux SNMP" does not exist or you have no access to this host.

Expected:

Import success.

 Comments   
Comment by Oleksii Zagorskyi [ 2021 Dec 06 ]

Clarify please which exact file do you try to import?
I've tried to delete "Linux SNMP" template on my 5.4 test installation, then imported template_os_linux_snmp_snmp.yaml (which included multiple templates) and the "Linux SNMP" returned back.

The "Linux SNMP" template does not hold items/triggers itself, it just contains 7 other module templates linked to it.

Comment by Markus Birth [ 2021 Dec 06 ]

That is exactly the file I've tried to import and yet it fails for me. Here's a screenshot of the error message and the templates I've got in my Zabbix 5.4.8:

 

I'll also attach the actual file I've downloaded from Git and tried to import:

template_os_linux_snmp_snmp.yaml

 

Comment by Oleksii Zagorskyi [ 2021 Dec 06 ]

Your yaml file is exactly as I have downloaded form git too.
Can you install a new 5.4 database, point frontend to it and retry your test? Just to make sure the issue is not related to your environment.

Just a guess - it's possible that UUID (4d3a7adbb6964bd08f2b9d28e0da6496) used in the imported template is already used in some other template(s) which causes such behavior.

Comment by Markus Birth [ 2021 Dec 06 ]

Doesn't seem to be a problem with the UUID (at least not with the hosts):

zabbix=# select uuid,name from hosts;
               uuid               |               name
----------------------------------+-----------------------------------
 3598da1effdf4ed48074608f1422e3fd | EtherLike-MIB SNMP
 4cb1aabe2b704b5c882963c2ef87d8f6 | Generic SNMP
 809cd59886464ff3ad0a66d16fb1f2d8 | Interfaces SNMP
                                  | DS415+
                                  | RPi4
                                  | RPi2
                                  | cam4 (Wohnzimmer 2)
 22ba4d214399462c945a4b1f922ef14c | ADSB Feeder
 f881e6526429422d9ee8fd982fabd189 | Granny FritzBox Startseite
 a945c91b1b74482d907485c6c2674729 | Template Brother Printers
 f825736c97704be7b7dc5a945e08278f | Synology DiskStation
 ccfd2ee2f32044d18568c96ad423df0f | Template Amazon Kindle Firmware
                                  | Granny FritzBox
                                  | Brother MFC-L2750DW
                                  | gotbirth RPi3
                                  | Kindle Voyage
                                  | cam5 (Flur)
 f8f7908280354f2abeed07dc788c3747 | Template OS Linux by Zabbix agent
                                  | cam3 (Außen)
 37e5eb5606bc4abba66c8b20381a1e8a | ICMP Ping
(20 rows)

 

I'll setup a fresh 5.4 DB and try with that.

Comment by Markus Birth [ 2021 Dec 06 ]

It seems to choke on https://github.com/zabbix/zabbix/blob/master/ui/include/classes/api/services/CTriggerGeneral.php#L1626-L1628 because there's no hostid defined for the to-be-imported template/host "Linux SNMP".

Array(
  [Linux SNMP] => Array(
    [hostid] => 
    [host] => Linux SNMP
    [status] => 
    [keys] => Array(
      [icmpping] => Array(
        [itemid] => 
        [key] => icmpping
        [value_type] => 
        [flags] => 
      )
      [icmppingloss] => Array(
        [itemid] => 
        [key] => icmppingloss
        [value_type] => 
        [flags] => 
      )
      [icmppingsec] => Array(
        [itemid] => 
        [key] => icmppingsec
        [value_type] => 
        [flags] => 
      )
      [system.name] => Array(
        [itemid] => 
        [key] => system.name
        [value_type] => 
        [flags] => 
      )
      [system.uptime[sysUpTime.0]] => Array(
        [itemid] => 
        [key] => system.uptime
        [sysUpTime.0][value_type] => 
        [flags] => 
      )
      [zabbix[host,snmp,available]] => Array(
        [itemid] => 
        [key] => zabbix
        [host,snmp,available][value_type] => 
        [flags] => 
      )
    )
  )
)

But I still have to try with a fresh database...

Comment by Markus Birth [ 2021 Dec 07 ]

Okay, tried with a completely fresh Docker setup ... and it works for some reason.  I just don't understand why it doesn't work with my existing set of containers (which, IIRC, started as some 5.2 version) created by the same stack.yml.

Comment by Markus Birth [ 2021 Dec 07 ]

Okay, looks like it was some PostgreSQL hiccup. After doing ANALYZE and VACUUM, the template suddenly imported fine. Thanks for nudging me into the right direction.  

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