Remove constantly updating value from custom SNMP OID

[syn-bit]

Adding a custom SNMP OID means having a different "expression " line each time the config is pulled. Add a rule to remove the expression value.

EEM code to generate the custom SNMP OID is:

event manager applet TotalNatTranslations event timer watchdog time 300 maxrun 60 action 010 cli command "enable" action 020 cli command "configure terminal" action 030 cli command "do-exec show ip nat translations total" action 040 regexp "^.+\s([0-9]+)" "$_cli_result" match total_translations action 050 cli command "snmp mib expression owner nat name 1" action 060 if $_regexp_result eq "1" action 070 cli command "expression $total_translations" action 080 else action 090 cli command "expression 0" action 100 cli command "exit" action 110 end

The resulting configuration block is:

snmp mib expression owner nat name 1 description Total active translations value type integer32 expression 1234 !

After this commit the resulting configuration block is:

snmp mib expression owner nat name 1 description Total active translations value type integer32 expression !

Pre-Request Checklist

• [ ] Passes rubocop code analysis (try rubocop --auto-correct)
• [ ] Tests added or adapted (try rake test)
• [ ] Changes are reflected in the documentation
• [ ] User-visible changes appended to CHANGELOG.md

Description

[robertcheramy]

This is an uncommon use case for me, but if you made the effort of submitting a PR, it is worth integrating it into oxidized. Thanks for your PR!

The gsub should be placed within the show running-config command (not cmd :all), before returning the resulting cfg: https://github.com/ytti/oxidized/blob/3ec983b4607ffb14c02a82b27a339aaf620f4f8c/lib/oxidized/model/ios.rb#L121

Also please document your Change in CHANGELOG.md

[syn-bit]

Hi Robert,

Thanks for reviewing my commit and setting me onto the straight path ;-) A new PR had been submitted and I hope it is now OK. I just discovered oxidized and had to make this change to prevent a new config every time the config is checked.

Thanks for maintaining oxidized!

Cheers Met vriendelijke groet,

Sake Blok Relational therapist for computer systems

SYN-bit Deep Traffic Analysis http://www.SYN-bit.nl

On 9 Oct 2024, at 18:15, Robert Chéramy @.***> wrote:

This is an uncommon use case for me, but if you made the effort of submitting a PR, it is worth integrating it into oxidized. Thanks for your PR!

The gsub should be placed within the show running-config command (not cmd :all), before returning the resulting cfg: https://github.com/ytti/oxidized/blob/3ec983b4607ffb14c02a82b27a339aaf620f4f8c/lib/oxidized/model/ios.rb#L121

Also please document your Change in CHANGELOG.md

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