Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
DevopsdaysIndia 2018: Loki, Prometheus but for ...
Search
Goutham Veeramachaneni
December 09, 2018
Programming
1
2.2k
DevopsdaysIndia 2018: Loki, Prometheus but for logs
Goutham Veeramachaneni
December 09, 2018
Tweet
Share
More Decks by Goutham Veeramachaneni
See All by Goutham Veeramachaneni
Storage in 2.0
gouthamve
1
130
Other Decks in Programming
See All in Programming
Writing Better Go: Lessons from 10 Code Reviews
konradreiche
2
4.8k
20251016_Rails News ~Rails 8.1の足音を聴く~
morimorihoge
2
630
PHPに関数型の魂を宿す〜PHP 8.5 で実現する堅牢なコードとは〜 #phpcon_hiroshima / phpcon-hiroshima-2025
shogogg
1
310
Server Side Kotlin Meetup vol.16: 内部動作を理解して ハイパフォーマンスなサーバサイド Kotlin アプリケーションを書こう
ternbusty
3
230
実践Claude Code:20の失敗から学ぶAIペアプログラミング
takedatakashi
15
6.3k
CSC305 Lecture 05
javiergs
PRO
0
230
テーブル定義書の構造化抽出して、生成AIでDWH分析を試してみた / devio2025tokyo
kasacchiful
0
230
What's new in Spring Modulith?
olivergierke
1
160
CSC509 Lecture 07
javiergs
PRO
0
240
CSC509 Lecture 05
javiergs
PRO
0
310
モテるデスク環境
mozumasu
3
170
contribution to astral-sh/uv
shunsock
0
320
Featured
See All Featured
Building Flexible Design Systems
yeseniaperezcruz
329
39k
Code Reviewing Like a Champion
maltzj
526
40k
Art, The Web, and Tiny UX
lynnandtonic
303
21k
The Invisible Side of Design
smashingmag
302
51k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
30
2.9k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Documentation Writing (for coders)
carmenintech
75
5.1k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3.1k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
508
140k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
How To Stay Up To Date on Web Technology
chriscoyier
791
250k
The Cult of Friendly URLs
andyhume
79
6.6k
Transcript
Loki Like Prometheus, but for logs Goutham Veeramachaneni @gouthamve DevOpsDaysIndia
2018
putadent gouthamve
QQQ
Outline • Quick Grafana intro • Full observability • Loki
• The future
Grafana intro
Grafana From Dashboarding solution To Observability platform
Unified way to look at data from different sources Logos
of datasources
Full Observability Picture credits: Peter Bourgon
Troubleshooting journey
Instrumenting an app
App • Classic 3-tiered app • Deployed in Kubernetes •
It’s running, but how is it doing? Load balancers App servers DB servers
Add instrumentation • Prometheus for metrics • Loki for logs
• Jaeger for traces
Change app • Introduce a bug • Let’s debug this
with our new tools
Demo: http://localhost:3000/explore
Loki: Grafana logging in detail
Goal: Keeping it simple https://twitter.com/alicegoldfuss/status/981947777256079360
Logs should be cheap! Existing Solutions are hard to scale
and operate You don’t need full text search / indexing Metrics, Logs and Traces need to work together More Goals
Logging for Kubernetes {job=”app1”} {job=”app3”} {job=”app2”}
Logging for Kubernetes (2) {job=”app1”} {job=”app3”} {job=”app2”}
Service Discovery for Grafana Logging • Prometheus-style service discovery of
logging targets • Labels are indexed as metadata, e.g.: {job=”app1”} • Relabeling rules
Logging architecture {job=”app1”} {job=”app2”} Node Logging agent Logging service Logging
datasource
Logging architecture {job=”app1”} {job=”app2”} Node Promtail Loki Logging datasource
Loki: Architecture Your jobs Distributor Ingester Index Chunks Querier
Loki: Write Path Your jobs Distributor Ingester Index Chunks
Distributor Distributor Ingester Use consistent hashing to assign a timestream
to an ingester.
Loki: Write Path Ingester {job=”app1”, instance=”...”,..} {job=”app2”, instance=”...”,..} Log line
Loki: Write Path Ingester {job=”app2”, instance=”...”,..} Index Chunks
Loki: Read Path Ingester Index Chunks Querier
Loki: Scalability Index Chunks Bigtable DynamoDB Cassandra BOLTDB GCS S3
Ceph / Minio FILES Distributor Ingester Querier
Loki: Status • Alpha software • Focus on correctness, ease-of-use
first, performance later • Onboard paying customers in Q1 2019 • Beyond Kubernetes
• Cheap but not free :) • Grep + Parsing
in browser • Can’t do complicated queries Loki: Caveats
What we’re working on
Enable Explore UI (BETA: Prometheus) Behind feature flag. To enable,
edit Grafana config ini file [explore] enabled = true Set up a datasource that supports Explore, e.g., Prometheus. Will be released in 6.0 (Feb 2019)
Integrate Tracing • Associate traces with logs and metrics •
Labels FTW • Aiming for Q2 2019
Logging UI needs to be refined still behind feature flag,
feedback welcome: @davkals or
[email protected]
UX improvements on logs and metrics views Performance improvements
One last thing...
https://www.grafanacon.org/2019/
Tack for listening Questions to
[email protected]
@putadent