Syntax error after upgrade to 2.11.2

Icinga 2 Core
#1

Hi,
I’m having troubles with latest Icinga2 release:

[2019-11-13 13:34:20 +0000] critical/config: Error: Error while evaluating expression: Cannot convert value of type 'String' to an object.
Location: in /etc/icinga2/zones.d/global-templates/system.conf: 542:3-542:22
/etc/icinga2/zones.d/global-templates/system.conf(540):   check_command = "check_smart_log"
/etc/icinga2/zones.d/global-templates/system.conf(541):   command_endpoint = host.name
/etc/icinga2/zones.d/global-templates/system.conf(542):   vars = vars + config
                                                          ^^^^^^^^^^^^^^^^^^^^
/etc/icinga2/zones.d/global-templates/system.conf(543):   assign where "physical-servers" in host.groups
/etc/icinga2/zones.d/global-templates/system.conf(544):   ignore where !host.vars.client_endpoint || !host.vars.hdd

[2019-11-13 13:34:20 +0000] critical/config: Error: Error while evaluating expression: Cannot convert value of type 'String' to an object.
Location: in /etc/icinga2/zones.d/global-templates/system.conf: 542:3-542:22
/etc/icinga2/zones.d/global-templates/system.conf(540):   check_command = "check_smart_log"
/etc/icinga2/zones.d/global-templates/system.conf(541):   command_endpoint = host.name
/etc/icinga2/zones.d/global-templates/system.conf(542):   vars = vars + config
                                                          ^^^^^^^^^^^^^^^^^^^^
/etc/icinga2/zones.d/global-templates/system.conf(543):   assign where "physical-servers" in host.groups
/etc/icinga2/zones.d/global-templates/system.conf(544):   ignore where !host.vars.client_endpoint || !host.vars.hdd

[2019-11-13 13:34:20 +0000] critical/config: 2 errors
[2019-11-13 13:34:20 +0000] critical/cli: Config validation failed. Re-run with 'icinga2 daemon -C' after fixing the config.

the full config looks like this:

apply Service for (disk_name => config in host.vars.hdd) {
  import "generic-service"

  display_name = "SMART-" + disk_name
  check_command = "check_smart_log"
  command_endpoint = host.name
  vars = vars + config
  assign where "physical-servers" in host.groups
  ignore where !host.vars.client_endpoint || !host.vars.hdd
}

I haven’t changed anything in configuration, the check used to be valid. Any idea how to debug this? The variable host.vars.hdd is non-empty for all hosts as far as I can tell:

icinga2 object list --type Host | grep "hdd" -A 5
#2

Hi,

vars += config

is the correct syntax - update your service definition.

Greetz

1 Like
#3

It should be the same, right?

The configuration is generated by puppet-icinga2, which didn’t support the syntax earlier (now it seems to be possible).

In the same file I have the statement vars = vars + config 4 times and it appears to be valid. Moreover it iterates over the same variable.

#4

I’ve updated the puppet module to support + config syntax. The error remains basically the same:

[2019-11-13 14:03:31 +0000] critical/config: Error: Error while evaluating expression: Cannot convert value of type 'String' to an object.
Location: in /etc/icinga2/zones.d/global-templates/system.conf: 542:3-542:16
/etc/icinga2/zones.d/global-templates/system.conf(540):   check_command = "check_smart_log"
/etc/icinga2/zones.d/global-templates/system.conf(541):   command_endpoint = host.name
/etc/icinga2/zones.d/global-templates/system.conf(542):   vars += config
                                                          ^^^^^^^^^^^^^^
/etc/icinga2/zones.d/global-templates/system.conf(543):   assign where "physical-servers" in host.groups
/etc/icinga2/zones.d/global-templates/system.conf(544):   ignore where !host.vars.client_endpoint
#5

Hi,

can you show us the host definition on which the service gets applied?

Greetz

#6

There are about 153 hosts that matches the condition. Basically the definition looks like this:

object Host "x01.example.com" {
  address = "192.168.1.62"
  groups = [ "physical-servers", ]
  check_command = "hostalive"
  check_interval = 1m
  retry_interval = 30s
  zone = "eu-west"
  vars.os = "Linux"
  vars.hdd["sda"] = {
    smart_device = "/dev/sda"
  }
  vars.hdd["sdb"] = {
    smart_device = "/dev/sdb"
  }
}

I wish icinga would print on which Host it’s failing, but it’s not showing in icinga daemon -C output. Is there some option to enable more verbose output?

#7

Hi,

you can use the script debugger within the config validation to halt on errors. At that scope, you can print the object which is affected. Likely you have a host, where vars.hdd has a key with a string value instead of a dictionary.

https://icinga.com/docs/icinga2/latest/doc/20-script-debugger/#debugging-configuration-errors

Cheers,
Michael

1 Like
#8

Thanks Michael, that actually helps a lot. There was an erroneous config that got merged from Puppet’s exported resources.

1 Like