Bug 1719366
| Summary: | OnCalendar timers with RandomizedDelaySec != 0 may never run | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Renaud Métrich <rmetrich> |
| Component: | systemd | Assignee: | systemd-maint |
| Status: | CLOSED WONTFIX | QA Contact: | Frantisek Sumsal <fsumsal> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.6 | CC: | dtardon, fsumsal, systemd-maint-list, systemd-maint |
| Target Milestone: | rc | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 1719364 | Environment: | |
| Last Closed: | 2020-11-11 21:46:31 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Renaud Métrich
2019-06-11 15:25:21 UTC
Doing a lot of reloads is not a typical scenario, I assume... Development Management has reviewed and declined this request. You may appeal this decision by using your Red Hat support channels, who will make certain the issue receives the proper prioritization with product and development management. https://www.redhat.com/support/process/production/#howto I disagree with the decision, this bug is hit regularly by our customers having insights-client installed. The insights-client.timer unit is configured with this: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- [Timer] OnCalendar=daily RandomizedDelaySec=14400 -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- "daily" means every midnight 00:00:00 from systemd.time(7) 14400 delay is 4 hours With this setup, it is enough that *one* reload happens some time after midnight for insights-client to not run that day, something that customers notice through their monitoring tools. Usually automatic administration (ansible, puppet) is done during the night during these hours, this kind of administration tasks definitely causes spurious reloads leading to the issue. Depending on the administration task performed, we may take a very long time, the spurious reloads can lead to not executing insights-client timer at all, as shown in the example below: 1. Timestamp 00:00 (midnight): say systemd configured insights-client to run at 2 o'clock (middle of the interval) 2. Timestamp 01:30: admin task provokes a reload implicitly (e.g. because a "systemctl enable foo" is executed, *even* when foo was already enabled ... systemctl *will* reload in any case) -> systemd reconfigures insights-client to run NEXT DAY (because we are past midnight, so next midnight, being the reference for timer computation will be the day after) -> insights-client not executing today Since everyday the admin task will reload implicitly, insights-clients will *never* run. Hence, please reconsider. Red Hat Enterprise Linux 7 shipped it's final minor release on September 29th, 2020. 7.9 was the last minor releases scheduled for RHEL 7. From intial triage it does not appear the remaining Bugzillas meet the inclusion criteria for Maintenance Phase 2 and will now be closed. From the RHEL life cycle page: https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_2_Phase "During Maintenance Support 2 Phase for Red Hat Enterprise Linux version 7,Red Hat defined Critical and Important impact Security Advisories (RHSAs) and selected (at Red Hat discretion) Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available." If this BZ was closed in error and meets the above criteria please re-open it flag for 7.9.z, provide suitable business and technical justifications, and follow the process for Accelerated Fixes: https://source.redhat.com/groups/public/pnt-cxno/pnt_customer_experience_and_operations_wiki/support_delivery_accelerated_fix_release_handbook Feature Requests can re-opened and moved to RHEL 8 if the desired functionality is not already present in the product. Please reach out to the applicable Product Experience Engineer[0] if you have any questions or concerns. [0] https://bugzilla.redhat.com/page.cgi?id=agile_component_mapping.html&product=Red+Hat+Enterprise+Linux+7 |