Page MenuHomePhabricator
Create Task
Maniphest T287559

node-exporter syslog spam filling up centrallog
Closed, ResolvedPublic
Actions

Description

Noticed today while another incident was in progress, centrallog1001 filled up its disk due to syslog spam from node exporter:

Jul 28 06:49:20 cloudvirt1023 prometheus-node-exporter[1193]: cloudvirt1023\" > untyped:<value:0.102 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1020.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.112 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephmon1001.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.165 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephmon1002.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.194 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephmon1003.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.166 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1001.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.065 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1002.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.101 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1003.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.072 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1004.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.074 > } was collected before with the same name and label values\n* [from Gatherer #2] collected metric \"node_ping_latency\" { label:<name:\"dst_host\" value:\"cloudcephosd1005.eqiad.wmnet\" > label:<name:\"src_host\" value:\"cloudvirt1023\" > untyped:<value:0.097 > } was collected before with the same name and

The problem is with node-pinger appending only values to its .prom file, and never replacing the file

Details

SubjectRepoBranchLines +/-
Revert "prometheus: temp disable node-pinger"operations/puppetproduction+1 -1
systemd.timer_service: fix missing exec_start_preoperations/puppetproduction+3 -3
prometheus: temp disable node-pingeroperations/puppetproduction+1 -1
Customize query in gerrit

Event Timeline

fgiunchedi created this task.Jul 28 2021, 6:56 AM
Restricted Application edited projects, added cloud-services-team (Kanban); removed cloud-services-team. · View Herald TranscriptJul 28 2021, 6:56 AM
Restricted Application added a subscriber: Aklapper. · View Herald Transcript
gerritbot added a comment.Jul 28 2021, 7:01 AM

Change 708462 had a related patch set uploaded (by Filippo Giunchedi; author: Filippo Giunchedi):

[operations/puppet@production] prometheus: temp disable node-pinger

https://gerrit.wikimedia.org/r/708462

gerritbot added a project: Patch-For-Review.Jul 28 2021, 7:01 AM
gerritbot added a comment.Jul 28 2021, 7:04 AM

Change 708462 merged by Filippo Giunchedi:

[operations/puppet@production] prometheus: temp disable node-pinger

https://gerrit.wikimedia.org/r/708462

Stashbot added a comment.Jul 28 2021, 7:07 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:07:39Z] <godog> remove cloud*/syslog.log from centrallog2001 - T287559

Maintenance_bot removed a project: Patch-For-Review.Jul 28 2021, 7:10 AM
fgiunchedi added a comment.Jul 28 2021, 7:13 AM

AFAICT the exec_start_pre option of systemd::timer::job is never rendered either in the .service or (which wouldn't work afaik) in the .timer units

dcaro subscribed.Jul 28 2021, 7:15 AM
Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:15Z] <dcaro@cumin1001> START - Cookbook sre.hosts.downtime for 5:00:00 on 6 hosts with reason: T287559

Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:22Z] <dcaro@cumin1001> END (PASS) - Cookbook sre.hosts.downtime (exit_code=0) for 5:00:00 on 6 hosts with reason: T287559

Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:28Z] <dcaro@cumin1001> START - Cookbook sre.hosts.downtime for 5:00:00 on 40 hosts with reason: T287559

Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:37Z] <dcaro@cumin1001> END (PASS) - Cookbook sre.hosts.downtime (exit_code=0) for 5:00:00 on 40 hosts with reason: T287559

Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:46Z] <dcaro@cumin1001> START - Cookbook sre.hosts.downtime for 5:00:00 on 29 hosts with reason: T287559

Stashbot added a comment.Jul 28 2021, 7:20 AM

Mentioned in SAL (#wikimedia-operations) [2021-07-28T07:20:56Z] <dcaro@cumin1001> END (PASS) - Cookbook sre.hosts.downtime (exit_code=0) for 5:00:00 on 29 hosts with reason: T287559

gerritbot added a comment.Jul 28 2021, 7:25 AM

Change 708465 had a related patch set uploaded (by David Caro; author: David Caro):

[operations/puppet@production] systemd.timer_service: fix missing exec_start_pre

https://gerrit.wikimedia.org/r/708465

gerritbot added a project: Patch-For-Review.Jul 28 2021, 7:25 AM
gerritbot added a comment.Jul 28 2021, 7:27 AM

Change 708465 merged by David Caro:

[operations/puppet@production] systemd.timer_service: fix missing exec_start_pre

https://gerrit.wikimedia.org/r/708465

gerritbot added a comment.Jul 28 2021, 7:31 AM

Change 708468 had a related patch set uploaded (by David Caro; author: David Caro):

[operations/puppet@production] Revert \"prometheus: temp disable node-pinger\"

https://gerrit.wikimedia.org/r/708468

gerritbot added a comment.Jul 28 2021, 7:34 AM

Change 708468 merged by David Caro:

[operations/puppet@production] Revert \"prometheus: temp disable node-pinger\"

https://gerrit.wikimedia.org/r/708468

dcaro added a comment.Jul 28 2021, 7:40 AM

Fix deployed and running:

root@cloudcephosd1001:~# wc /var/lib/prometheus/node.d/node_pinger.prom
  22   44 2046 /var/lib/prometheus/node.d/node_pinger.prom

root@cloudcephosd1001:~# systemctl start prometheus-node-pinger.service

root@cloudcephosd1001:~# wc /var/lib/prometheus/node.d/node_pinger.prom
  22   44 2046 /var/lib/prometheus/node.d/node_pinger.prom

Thanks @fgiunchedi !

dcaro closed this task as Resolved.Jul 28 2021, 7:40 AM
dcaro claimed this task.
Maintenance_bot removed a project: Patch-For-Review.Jul 28 2021, 8:10 AM
Content licensed under Creative Commons Attribution-ShareAlike (CC BY-SA) 4.0 unless otherwise noted; code licensed under GNU General Public License (GPL) 2.0 or later and other open source licenses. By using this site, you agree to the Terms of Use, Privacy Policy, and Code of Conduct. · Wikimedia Foundation · Privacy Policy · Code of Conduct · Terms of Use · Disclaimer · CC-BY-SA · GPL · Credits