opscenter

问题 Using OpsCenter OpenSource version 5.2.1 on Ubuntu 14.04. I cannot see the "Data Size" Metric in Node Ring or List view however, if I click on a single node I can see it's disk usage. I'm not having any luck getting information from datastax agent logs or from opscenterd logs. I suspect that perhaps this is an enterprise only feature? Can provide additional information as requested. Screenshots for clarity can be found here. (sorry, I need more "reputation" to post them directly to this

问题 I'm trying to install Datastax Enterprise 5.0 by using Lifecycle Manager (I've installed Opscenter). But install job fails with a message that is not too descriptive, and obviously pretty rare (0 hits in Google): Event Type: error-MeldError Result/Message: Meld failed on: name="<nodename>" ssh-management-address="<nodeip>" node-id="<someguid>" job-id="<someguid>" stdout="" stderr="" Stack trace: lcm.jobs.multinode.common$monitor_command.invoke(common.clj:547) lcm.jobs.multinode.common$run

问题 I am looking for a set of instructions to create a local multi-node Cassandra 2.x cluster on a Window 7 64 bit PC. It should preferably use CCM “Cassandra Cluster Manager” and allow management using DataStax OpsCenter I followed the instructions in “Getting Started with Apache Cassandra on Windows the Easy Way” but they are for a single node cluster. EDIT: I got stuck on deploying OpsCenter agents on each node using CCM, any ideas? 回答1: Articles used for this tutorial: CCM 2.0 and Windows

问题 While adding existing cluster in OpsCenter I receive an error: ERROR: Agent for XXX.XXX.XXX.XXX was unable to complete operation (http://XXX.XXX.XXX.XXX:61621/snapshots/pit/properties?): java.lang.IllegalArgumentException: No implementation of method: :make-reader of protocol: #'clojure.java.io/IOFactory found for class: nil On agent there is an error: java.lang.IllegalArgumentException: No implementation of method: :make-reader of protocol: #'clojure.java.io/IOFactory found for class: nil at

问题 I'm running Cassandra along with opscenter agent, and got the following error in the log when Opscenter tries to get general and CF metrics. INFO [jmx-metrics-1] 2015-08-02 21:55:20,555 New JMX connection (127.0.0.1:7199) INFO [jmx-metrics-1] 2015-08-02 21:55:20,558 New JMX connection (127.0.0.1:7199) ERROR [jmx-metrics-2] 2015-08-02 21:55:25,448 Error getting CF metrics java.lang.UnsupportedOperationException: nth not supported on this type: PersistentArrayMap at clojure.lang.RT.nthFrom(RT

问题 Currently, we are evaluating datastax enteprise as our provider of Cassandra and Spark.We consider deploying Datastax cluster on AWS. I have following questions: 1) In step 1 of Datastax on EC2 installation manual, I need to choose correct AMI Image: Currently there are 7 of them. Which is the correct one: (DataStax Auto-Clustering AMI 2.5.1-pv, DataStax Auto-Clustering AMI 2.6.3-1204-pv, DataStax Auto-Clustering AMI 2.6.3-1404-pv....) 2) The moment we launch the cluster, do we pay only for

问题 OpsCenter version: 5.1.0 and DSE Version: 4.6.0 Creating a brand new cluster by using OpsCenter directly, gives us the following error. It randomly works with the same settings but 95% of the times it fails with the same error. Opscenter is running on its own box but sharing the same Security groups as the cluster instances. For good measure, I have opened up all TCP ports to all IPs. The following is the stack trace of the error from the opscenterd.log: *2015-03-19 10:06:12+0000 [] INFO:

问题 For some reason I experience high load on my Cassandra nodes. Here are some information to get the picture. When I create a brand new Cluster the load is constantly low for a couple of days and increases by time, after a week or something it just goes of into the air, causing what I found is a instability in the whole Cluster I'm taking snapshots of one of my keyspaces containing around 300-400 MBs of data every 4 hour and deleting the ones older than 7 days, all configured in OpsCenter The

问题 Update Ok, some more factors discovered, this image was taken after I clicked using "manage existing cluster, and added 127.0.0.1 as host node" so I guess there should be a configuration where I can set the package to be community edition not enterprise. But If I do create new cluster where I'm able to pick community edition package, the problem is that it tries to install cassandra and datastax-agent over these nodes and finishes with errors dismiss and retry While trying to fix a cassandra

问题 Using OpsCenter 5.1.1, Datastax Enterprise 4.5.1, 3 node cluster in AWS. I set up a scheduled backup to local server and also to bucket in S3. The On Server backup finished successfully on all 3 nodes. The S3 backup runs slowly and fails on all 3 nodes. Some keyspaces are backed up, files are created in the S3 bucket. It appears that not all tables are backed up. Looking at /var/log/opscenter/opscenterd.log, I see an OOM error. Why should there be an out-of-memory error when writing to S3