Re: Cassandra JMX without RMI?

We use Jolokia. It runs inside of Cassandra and then gives you an HTTP REST interface to interact with JMX. Works great for us! https://jolokia.org/ - Max > On Jul 18, 2023, at 8:11 pm, Angelo Polo wrote: > > Is it possible to connect to the Cassandra JMX server witho

Re: Survey about the parsing of the tooling's output

We used to have monitoring scripts that parsed the output of nodetool (status, listsnapshots), but these tools have been replaced with using Jolokia (REST interface to JMX) — this is both more powerful and easier to parse for things like monitoring scripts. We *really* would have loved to have

Re: New DC / token distribution not balanced

ion_factor" more useful than > "allocate_tokens_for_keyspace" when you are spinning up a new DC. > > On 16/03/2023 06:25, Max Campos wrote: >> Update: I figured out the problem! >> >> The “allocate_tokens_for_keyspace” value needs to be set for a keyspace t

Re: New DC / token distribution not balanced

added the nodes … voila! Problem solved! > On Mar 15, 2023, at 10:50 pm, Max Campos wrote: > > Hi All - > > I’m having a lot of trouble adding a new DC and getting a balanced ring (i.e. > every node has the same percentage of the token ring). > > My config: > &g

New DC / token distribution not balanced

Hi All - I’m having a lot of trouble adding a new DC and getting a balanced ring (i.e. every node has the same percentage of the token ring). My config: GossipingPropertyFileSnitch allocate_tokens_for_keyspace: num_tokens = 16 6 nodes in the new DC / 3 nodes in the existing DC Cassandra 3.0.2

Re: Replacing node w/o bootstrapping (streaming)?

> Be sure you rsync the commitlog directory too . Flush and drain to be extra > safe > > > >> On Feb 9, 2023, at 6:42 PM, Max Campos wrote: >> >> Hi - >> >> We have a node whose root partition is flaking out. The disk that contains >> the Cass

Replacing node w/o bootstrapping (streaming)?

Hi - We have a node whose root partition is flaking out. The disk that contains the Cassandra data, however, is healthy. We’d like to replace the dying node with a procedure like this: 0) OLD node is running, NEW node has never started Cassandra 1) rsync Cassandra data from OLD node to NEW (1

Re: The "Cassandra Corner" podcast

Hi Aaron, Do you have the RSS feed URL handy? I looked at the source of the page, and it shows this: https://anchor.fm/s/99c5e268/podcast/rss https://anchor.fm/s/99c5e268/podcast/rss>" /> … which leads to a 404. Thanks. - Max > On Jun 1, 2022, at 6:55 am, Aaron Ploetz wrote: >

Re: Lots of simultaneous connections?

> to the latest 3.0 (don't forget to read news.txt) > On 14 Dec. 2017 19:18, "Max Campos" <mailto:mc_cassan...@core43.com>> wrote: > Hi - > > We’re finally putting our new application under load, and we’re starting to > get this error message from

Lots of simultaneous connections?

Hi - We’re finally putting our new application under load, and we’re starting to get this error message from the Python driver when under heavy load: ('Unable to connect to any servers', {‘x.y.z.205': OperationTimedOut('errors=None, last_host=None',), ‘x.y.z.204': OperationTimedOut('errors=Non

Re: Error of "You have to be logged in and not anonymous to perform this request"

These commands don’t really mean anything unless you’re using authentication. If you want to enable roles / authentication / etc, then follow the instructions in the manual: http://cassandra.apache.org/doc/latest/operating/security.html#authentication

Re: Does "nodetool repair" need to be run on each node for a given table?

For anyone with questions about how repair works, why repair, partial range repair, incremental vs. non-incremental repair, best practices for repair, etc. I highly recommend this talk from Alexander Dejanovski, The Last Pickle at Cassandra Summit 2016: https://www.youtube.com/watch?v=1Sz_K8UI