Checkmk werks level1 April 2020

checkmk-werks-lvl1@lists.checkmk.com

11 participants
59 discussions

Checkmk Werk 11021: Fixed validation of regex filter

by Ronny Bruska

ID: 11021 Title: Fixed validation of regex filter Component: Multisite Level: 1 Class: Bug fix Version: 1.7.0i1 If you use invalid regex or lookaheads in views filter like "service", this could lead to timeouts and the possibility that you can not edit the view any more. Instead of that you will now get a message, that this input is not valid. If you already have configured such regex it is possible, that you have to adjust it.

4 years, 5 months

Checkmk Werk 10962: Bugfix for AWS monitoring (conversion Sum --> rates)

by Joerg Herbel

ID: 10962 Title: Bugfix for AWS monitoring (conversion Sum --> rates) Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 This werk fixes a bug which affected the conversion of AWS Cloudwatch metrics with a statistics of type "Sum" into rates. Without this fix, the computed rates are too high by a factor of 10. Affected checks: - aws_elb.http_elb - aws_elb.http_backend - aws_elb.backend_connection_errors - aws_elbv2_application.http_elb - aws_elbv2_application_target_groups_http - aws_elbv2_application_target_groups_lambda - aws_s3_requests - aws_s3_requests.http_errors Note that only the absolute values were affected, no the computed percentages (if any).

4 years, 5 months

Checkmk Werk 10961: Monitoring of AWS DynamoDB tables

by Joerg Herbel

ID: 10961 Title: Monitoring of AWS DynamoDB tables Component: Checks & agents Level: 1 Class: New feature Version: 1.7.0i1 This werk introduces monitoring of AWS DynamoDB tables. The monitoring includes overall limits for AWS DynamoDB (both account-wide and per-table limits on Read and Write Capacity Units) and a summary of all tables. Furthermore, we also monitor read and write capacities as well as latencies on a per-table basis. To make use of this werk, you have to configure the related AWS special agent to monitor Dynamo DB.

4 years, 5 months

Checkmk Werk 10962: Bugfix for AWS monitoring (conversion Sum --> rates)

by Joerg Herbel

4 years, 5 months

Checkmk Werk 11058: NagVis: Updated to 1.9.19

by Lars Michelsen

ID: 11058 Title: NagVis: Updated to 1.9.19 Component: Other Components Level: 1 Class: Bug fix Version: 1.7.0i1

4 years, 5 months

Checkmk Werk 10778: Cisco CPU checks: relax SNMP scan function

by Óscar Nájera

ID: 10778 Title: Cisco CPU checks: relax SNMP scan function Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 The Cisco CPU checks discovery ordering from Werk 7458 is revisited. There are four Cisco CPU checks: cisco_cpu, cisco_cpu_multiitem, cisco_nexus_cpu, cisco_oldcpu. We discover the Cisco CPU utilization services in the following order: - if it's a Nexus device the cisco_nexus_cpu check is used - if the device contains the SNMP table .1.3.6.1.4.1.9.9.109.1.1.1.1.2.* then cisco_cpu_multiitem is used - if the device either the OID .1.3.6.1.4.1.9.9.109.1.1.1.1.8.1 or .1.3.6.1.4.1.9.9.109.1.1.1.1.5.1 then cisco_cpu. This acts now as a fallback and is not strict about verifying device not belonging to cisco nexus family. This as a relaxed condition to werk 5748. - if .1.3.6.1.4.1.9.2.1.57.0 exists then cisco_oldcpu is used There may be Cisco hosts which have discovered the 'wrong' check type. After a re-discovery the CPU check type may change.

4 years, 5 months

Checkmk Werk 10601: Auto migration of check plugins to new section definitions

by Moritz Kiemer

ID: 10601 Title: Auto migration of check plugins to new section definitions Component: Checks & agents Level: 2 Class: New feature Version: 1.7.0i1 We are now converting all plugins to the new format expected by the future API. Migrated are plugins from <ul> <li>share/check_mk/checks</li> <li>local/share/check_mk/checks</li> <li>share/check_mk/inventory</li> <li>local/share/check_mk/inventory</li> </ul> Although we are trying to migrate as many check and inventory plugins as possible on the fly, for some plugins this may fail. These are the anticipated reasons why auto-migration may fail: <h4>A cluster aware checkplugin</h4> Checkmk refuses to auto-migrate cluster aware (those with node_info set to True) check plugins. Auto converting the data layout is too error prone. These plugins must be migrated manually. <h4>Checkplugins using 'extra_sections'</h4> Checkmk refuses to auto-migrate check plugins that make use of the 'extra_sections' feature. In the new API the destiction between the regular section and additional 'extra_sections' is not made, and all section content will be passed in its 'parsed' version. Therefore these Plugins have to be migrated manually. <h4>A missing SNMP scan function</h4> Every Checkplugin that specifies an 'snmp_info' key must specify 'snmp_scan_function' as well. <h4>A complex SNMP scan function</h4> If Checkmk fails to auto-migrate a legacy SNMP plugin to a section definition, this is most likely due to an elaborate scan function. For the auto-migration to work, the scan function must be fairly simple. Make sure your scan function has the following properties: <ul> <li>it only consists of one single return statement</li> <li>it does not in turn call other functions (not even 'all' or 'any')</li> <li>it does not negate compound expressions</li> </ul> If in doubt, take a look at scan functions that succeed to be migrated to see what options are available. <h4> Known limitations</h4> <ul> <li>HostLabels that are generated in a subchecks discovery function are lost</li> </ul>

4 years, 5 months

Checkmk Werk 10932: Make scan functions of fast_lta_* more strict

by Timotheus Bachinger

ID: 10932 Title: Make scan functions of fast_lta_* more strict Component: Checks & agents Level: 1 Class: New feature Version: 1.7.0i1

4 years, 5 months

Checkmk Werk 11020: Quicksearch: Validate if search string contains lookahead

by Ronny Bruska

ID: 11020 Title: Quicksearch: Validate if search string contains lookahead Component: Multisite Level: 1 Class: Bug fix Version: 1.7.0i1 If you enter a string containing lookaheads like "foo(?!bar)" you get a livestatus error like "Unhandled exception: 400: Filter: invalid perl operator: (?!". This has been fixed. You will now get a message within the quicksearch, that this input is not valid.

4 years, 5 months

Checkmk Werk 10960: Monitoring of target group errors for AWS Application Load Balancers

by Joerg Herbel

ID: 10960 Title: Monitoring of target group errors for AWS Application Load Balancers Component: Checks & agents Level: 1 Class: New feature Version: 1.7.0i1 This werk adds two additional checks for Application Load Balancers. For each registered target group, one additional service is created. For target groups of type "instance" or type "ip", this service monitors the number of HTTP 2XX, 3XX, 4XX and 5XX errors produced by the respective target group. For target groups of type "lambda", the service monitors the number of Lambda user errors. There are no default upper levels, but they can be configured using the WATO rule "AWS/ELBApplication target errors".

4 years, 5 months

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Checkmk werks level1 April 2020