Adds a `max_crawler_memory` chart setting, which, if set, will
defines the upper crawler memory limit that crawler pods can be resized up to.
If not set, auto resizing is disabled and pods are always set to 'crawler_memory' memory
- set memory limit to 1.2x memory request to provide extra padding and
avoid OOM
- attempt to resize crawler pods by 1.2x when exceeding 90% of available
memory
- do a 'soft OOM' (send extra SIGTERM) to pod when reaching 100% of
requested memory, resulting in faster graceful restart, but avoiding a
system-instant OOM Kill
- Fixes#1632
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Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
- Backend: Use separate resource constraints for profiles: default
profile browser resources to either 'profile_browser_cpu' /
'profile_browser_memory' or single browser 'crawler_memory_base' /
'crawler_cpu_base', instead of scaled to the number of browser workers
- Frontend: check that profile html page is loading, keep retrying if
still getting nginx error instead of loading an iframe with the error.
Fixes#1598 (Copy of #1599 from 1.9.4)
The operator class has gotten fairly large, this is a first pass in
refactoring operator.py into a submodule instead, with multiple operator
instances which handle different types of objects.
- The main k8s interface has been split into K8sOpApi which extends K8sApi
and is shared across all operators.
- Each operator extends BaseOperator which also has an instance of K8sOpApi
- The CrawlOperator is still the bulk of the functionality, but will likely be further refactored
to support QA jobs
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Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>
