2.5 KiB
queries
Hosts reusable log queries which are built into a single queries.json file.
Query database structure
Queries are defined using the data model from src/model.py which builds a JSON Validation schema, making easy to validate the file.
One example of file can be seen at queries-example.yml
Both elastic-search and artcl can make use of regex searches.
Pattern is supposed to be an exact string match and if multiple are present
we could easily convert them into a regex or logstash expression that uses
logical AND.
Pattern
On elastic-rechheck queries we have cases with multiple entries used on
patterns, like message:foo AND message:bar. This is why we also allow
a list of strings.
Categories
A query can have only one category out of a determined list of possible
values, currently infra and code are allowed. These can be used to
list found matches in section, making them easier to read.
Tags
Tags are also used to build the logstash queries. List of known values already used inside elastic-recheck queries:
tags:
- console
- console.html
- devstack-gate-setup-host.txt
- grenade.sh.txt
- job-output.txt
- screen-c-api.txt
- screen-c-bak.txt
- screen-n-cpu.txt
- screen-n-sch.txt
- screen-q-agt.txt
- syslog.txt
When logstash query is build OR is used between multiple tags.
Uncovered cases:
We do not currently support the exclusions like below (2/93 found):
query: >-
message:"RESULT_TIMED_OUT: [untrusted : git.openstack.org/openstack/tempest/playbooks/devstack-tempest.yaml@master]" AND
tags:"console" AND NOT
(build_name:"tempest-all" OR
build_name:"tempest-slow" OR
build_name:"tempest-slow-py3")
query2: >-
(message: "FAILED with status: 137" OR
message: "FAILED with status: 143" OR
message: "RUN END RESULT_TIMED_OUT") AND
NOT message:"POST-RUN END RESULT_TIMED_OUT" AND
tags: "console"
To allow us to cover for corner cases not covered byt the generic format,
we could have an optional logstash key that mentions the query. When this
would be present, we woudl avoid building the logstash query ourselves and
just use it.
Disable queries per backend
To avoid using a particular query on a particular backend we can make use of
skip: ['er', 'artcl'].