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TLP Apache Cassandra Reaper users

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Hey folks! Welcome to our small (but growing) community for the TLP fork of the Reaper tool originally written by Spotify. We've added support for versions > 2.0, a Cassandra backend, and have merged in the Web UI. Before asking questions, be sure to check the README.

Get started: https://github.com/thelastpickle/cassandra-reaper/blob/master/README.md

GitHub: https://github.com/thelastpickle/cassandra-reaper

File an issue: https://github.com/thelastpickle/cassandra-reaper/issues

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6/23/22

Cassandra Repair Version 4 Support About "no cluster with seed host"

Hi, I am using cassandra version 4. When trying to add my 3-node cassandra servers to cassandra

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Cassandra Repair Version 4 Support About "no cluster with seed host"

Hi, I am using cassandra version 4. When trying to add my 3-node cassandra servers to cassandra

6/23/22

2/21/22

3 -> 6 nodes per DC; Will cut repair time in half?

Hi - Our current cluster is 2 DCs, 3 nodes per DC. 16 vnodes. RF=3 We're looking to expand our

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3 -> 6 nodes per DC; Will cut repair time in half?

Hi - Our current cluster is 2 DCs, 3 nodes per DC. 16 vnodes. RF=3 We're looking to expand our

2/21/22

Miguel Carvalho

2/10/22

Cassandra Reaper Slack

Hello guys , can someone please send me a invite link for reaper slack? I dont have an @apache.org

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Cassandra Reaper Slack

Hello guys , can someone please send me a invite link for reaper slack? I dont have an @apache.org

2/10/22

3/15/21

Unable to understand Segment Coalescing

Hello Team, I am just getting started with reaper. Pardon me as this might be a simple question I was

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Unable to understand Segment Coalescing

Hello Team, I am just getting started with reaper. Pardon me as this might be a simple question I was

3/15/21

Utkarsh Sharma3

11/12/20

Cassandra multi dc replication nodetool rebuild issue + schema mismatch

Found the issue and managed to fix it. Both the DC were running with different Cassandra versions. So

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Cassandra multi dc replication nodetool rebuild issue + schema mismatch

Found the issue and managed to fix it. Both the DC were running with different Cassandra versions. So

11/12/20

David Payne, Jon Haddad3

6/3/20

How do I get into the Slack Channel for Reaper that replaced gitter chat?

Thank you! On Wed, Jun 3, 2020 at 2:26 PM Jon Haddad <j...@jonhaddad.com> wrote: Reaper chat was

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How do I get into the Slack Channel for Reaper that replaced gitter chat?

Thank you! On Wed, Jun 3, 2020 at 2:26 PM Jon Haddad <j...@jonhaddad.com> wrote: Reaper chat was

6/3/20

4/17/20

Metrics logging

We are seeing a steady stream of writes into reaper_db.node_metrics_v3 on our clusters when running

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Metrics logging

We are seeing a steady stream of writes into reaper_db.node_metrics_v3 on our clusters when running

4/17/20

4/10/20

Cannot reach a node via jmx

This is the error ERROR [2020-04-10 14:02:02212] [pool-12-thread-7] icjJmxConnectionFactory - Failed

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Cannot reach a node via jmx

This is the error ERROR [2020-04-10 14:02:02212] [pool-12-thread-7] icjJmxConnectionFactory - Failed

4/10/20

3/10/20

jmxAddressTranslator - config via environment variables?

I see in the docs at http://cassandra-reaper.io/docs/configuration/reaper_specific/ that there is a

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jmxAddressTranslator - config via environment variables?

I see in the docs at http://cassandra-reaper.io/docs/configuration/reaper_specific/ that there is a

3/10/20

Dan Sarisky, Alexander Dejanovski5

3/3/20

Metrics disk usage on sidecar mode

2.0.3 is working great thus far. Repairs are succeeding across various clusters. Disk space usage is

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Metrics disk usage on sidecar mode

2.0.3 is working great thus far. Repairs are succeeding across various clusters. Disk space usage is

3/3/20

2/24/20

reaper not able to add the cluster

On Monday, February 24, 2020 at 12:56:24 PM UTC-5, Suresh Chode wrote: Hi I deployed the reaper

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reaper not able to add the cluster

On Monday, February 24, 2020 at 12:56:24 PM UTC-5, Suresh Chode wrote: Hi I deployed the reaper

2/24/20

Dan Sarisky, Reid Pinchback3

2/21/20

Questions on sidecar mode

"did progress just freeze at that point and not attempt any other segments?" That's

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Questions on sidecar mode

"did progress just freeze at that point and not attempt any other segments?" That's

2/21/20

2/21/20

What do these Reaper Metrics Mean?

Hi all ... Where else can I find more information about these metrics? Thanks

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What do these Reaper Metrics Mean?

Hi all ... Where else can I find more information about these metrics? Thanks

2/21/20

Jean Carlo, Alexander Dejanovski2

2/17/20

reaper uses the system_distributed keyspace ?

Hi, Reaper is not using these tables directly, it's Cassandra itself who writes to

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reaper uses the system_distributed keyspace ?

Hi, Reaper is not using these tables directly, it's Cassandra itself who writes to

2/17/20

Jan, Alexander Dejanovski3

2/10/20

Many errors in reaper.log after replacing a node

Hi Alexander, thanks for that idea and indeed that worked like a charm. Hopefully someone with the

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Many errors in reaper.log after replacing a node

Hi Alexander, thanks for that idea and indeed that worked like a charm. Hopefully someone with the

2/10/20

FH, … Reid Pinchback6

2/7/20

Reaper 1.4.1 Slow Performance: ~ 20 Segments/Day

I wanted to find a way to measure if increasing timeout was necessary. I assume the 'fail count

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Reaper 1.4.1 Slow Performance: ~ 20 Segments/Day

I wanted to find a way to measure if increasing timeout was necessary. I assume the 'fail count

2/7/20

2/3/20

Missing Error Message

Hi, I'm trying to find the correlated error to this INFO message: INFO [my-cluster:e6a58f50-433c-

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Missing Error Message

Hi, I'm trying to find the correlated error to this INFO message: INFO [my-cluster:e6a58f50-433c-

2/3/20

Nicolas Charles, Alexander Dejanovski2

12/20/19

Difficulties to run reaper with postgresql backend

Hi, this was fixed in Reaper 2.0.1, so you'll need to upgrade to get it working again. Cheers, --

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Difficulties to run reaper with postgresql backend

Hi, this was fixed in Reaper 2.0.1, so you'll need to upgrade to get it working again. Cheers, --

12/20/19

Cristian Zamfirache, … Reid Pinchback6

12/17/19

Reaper run blocks Cassandra node

Hi all, We fixed temporarily the issue by decreasing the segment size (increasing the number of

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Reaper run blocks Cassandra node

Hi all, We fixed temporarily the issue by decreasing the segment size (increasing the number of

12/17/19

Thales Ceolin, Reid Pinchback2

12/12/19

Issue with JMX on a newly created node

At a guess I would wonder if the new node is blocking the RMI port, like if the new node has

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Issue with JMX on a newly created node

At a guess I would wonder if the new node is blocking the RMI port, like if the new node has

12/12/19

Sanjay Gupta, … Reid Pinchback8

12/12/19

New to Cassandra Reaper, do I need to put schedules for all keyspaces ?

One possible wrinkle to note. If you have more a few keyspaces and if the execution of multiple

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New to Cassandra Reaper, do I need to put schedules for all keyspaces ?

One possible wrinkle to note. If you have more a few keyspaces and if the execution of multiple

12/12/19

12/9/19

405 error when attempting to delete a snapshot

Hello, I've been using the Reaper http rest api to automate the cleanup of some snapshots and I

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405 error when attempting to delete a snapshot

Hello, I've been using the Reaper http rest api to automate the cleanup of some snapshots and I

12/9/19

Philip Henriksen, … Alexander Dejanovski6

11/14/19

Reaper UI unable to connect to reaper server

Hello, Thank you. Never thought about looking at the network log, seeing what went wrong in the

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Reaper UI unable to connect to reaper server

Hello, Thank you. Never thought about looking at the network log, seeing what went wrong in the

11/14/19

Dan Bader, … Reid Pinchback7

11/7/19

Remove 1 Repair per node limit

Dan, if it helps, we found that the 4 parallel repairs seemed counterproductive. The TLP folks can

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Remove 1 Repair per node limit

Dan, if it helps, we found that the 4 parallel repairs seemed counterproductive. The TLP folks can

11/7/19

Madhu Nair, … Alexander Dejanovski4

10/25/19

How to schedule repair to run 2 times a day in Reaper

thanks for the reply and telling me that interval 0 means continuous repair. I will use that and

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How to schedule repair to run 2 times a day in Reaper

thanks for the reply and telling me that interval 0 means continuous repair. I will use that and

10/25/19

10/24/19

Force nodes from one DC to lead the repair?

Hi Everyone, We have 2 DCs (Europe & US), with 3 nodes each (RF 3). We're using Reaper's

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Force nodes from one DC to lead the repair?

Hi Everyone, We have 2 DCs (Europe & US), with 3 nodes each (RF 3). We're using Reaper's

10/24/19

Rhys Campbell, Alexander Dejanovski4

10/23/19

Reaper HTTP REST API Curl Examples

Thanks for sharing! ----------------- Alexander Dejanovski France @alexanderdeja Consultant Apache

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Reaper HTTP REST API Curl Examples

Thanks for sharing! ----------------- Alexander Dejanovski France @alexanderdeja Consultant Apache

10/23/19

Brandon, Reid Pinchback2

10/15/19

Stop repairs in progress

Disable the cron jobs if you haven't already. Do a rolling restart of your C* cluster(s) as that

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Stop repairs in progress

Disable the cron jobs if you haven't already. Do a rolling restart of your C* cluster(s) as that

10/15/19

Rhys Campbell, Alexander Dejanovski2

10/11/19

Disable Cassandra DB migrations

Hi Rhys, you can't disable migrations as they are necessary to bring the database up to date so

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Disable Cassandra DB migrations

Hi Rhys, you can't disable migrations as they are necessary to bring the database up to date so

10/11/19

jmo, Reid Pinchback3

10/9/19

reaper scanning local filesystem, including /root, generating "permission denied" errors

Given that reaper is installed via rpm, that would seem to be something that could be eliminated. The

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reaper scanning local filesystem, including /root, generating "permission denied" errors

Given that reaper is installed via rpm, that would seem to be something that could be eliminated. The

10/9/19

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