Questions tagged [zookeeper]
48 questions
1
vote
1 answer
zookeeper ssl alert "alert bad certificate"
I am using Kafka (version 2.3.0) and Zookeeper (version 3.5.5-3) - the stable version is 3.6.3.
When I test the SSL of my Zookeeper using this command:
openssl s_client -showcerts -connect 127.0.0.1:2280 -CAfile /certs/ca-chain.cert.pem
and I am…
![](../../users/profiles/798442.webp)
John Mark
- 13
- 2
1
vote
0 answers
Zookeeper ensemble leader reporting incorrect number of followers
I have a zookeeper ensemble running in Kubernetes consisting of 3 instances. The ensemble operates mostly correctly and successfully services the Solr cluster it is backing. One thing does seem incorrect however, and it's breaking some health checks…
![](../../users/profiles/107240.webp)
Taz
- 147
- 3
- 16
1
vote
0 answers
How can I further analyze ram usage in a possible leak? [debian@HyperV + Kafka + Zookeeper]
We have a 3-box cluster Kafka+Zookeeper, in a virtualized enviroment (in Windows 2019 HyperV).
In the machines' config dynamic memory is disabled, and they have 4G RAM each (I know it's a very few amount for this kind of cluster, but the usage is…
![](../../users/profiles/488659.webp)
Mise
- 11
- 2
0
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0 answers
zookeeper server due unable to load database on disk
We have kafka cluster with 3 nodes , each kafka include zookeeper server and schema registry
We get the following error on one of the zookeeper server
[2019-11-12 07:44:20,719] ERROR Unable to load database on disk…
![](../../users/profiles/423473.webp)
shalom
- 451
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0
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1 answer
hadoop + can we install zookeeper servers on kafka hosts
we want to dedicated the zookeeper servers only for kafka machines
so each kafka machine include the zookeeper server
and zookeeper server will serve only the kafka host and not other application
in that case is it ok?
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shalom
- 451
- 12
- 26
0
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1 answer
Dose zookeeper servers must use SSD disks?
we want to install kafka cluster and 3 zookeeper servers
kafka should use the zookeeper servers in order to save the metadata on the zookeeper servers
ZK Data and Log files should be on disks, which have least contention from other I/O activities.…
![](../../users/profiles/423473.webp)
shalom
- 451
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- 26
0
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1 answer
kafka with ACL fails to connect zk and stops
I have a kafka installation (with ssl listener and ssl client authentication). It works fine until I try to add ACL.
this is the error (full error in the bottom):
[edit-1]
the first error on kafka startup is this:
[2018-07-25 14:15:10,498] ERROR…
![](../../users/profiles/197000.webp)
ozma
- 121
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- 5
0
votes
1 answer
How to manage failover in ZooKeeper across datacenters using observers
I have an application running in 3 different datacenters that uses ZooKeeper for many tasks. Following the recommended practices, we have deployed three ZooKeeper ensembles where one datacenter contains common ZooKeeper instances and the other two…
![](../../users/profiles/243599.webp)
Matheus Portela
- 171
- 1
- 9
0
votes
1 answer
Why does DFSZKFailoverController kills Namenode process in hadoop?
I try to configure hadoop high availability cluster by following this tutorial:
http://www.edureka.co/blog/how-to-set-up-hadoop-cluster-with-hdfs-high-availability/
When I follow that article I faces with two main problems:
1. hdfs namenode…
![](../../users/profiles/335036.webp)
Oleksandr
- 703
- 2
- 10
- 17
0
votes
1 answer
Zookeeper will not join the cluster. How to apply patch/upgrade?
I am running a 3 node zookeeper ensemble on ubuntu 14.04. After noticing that node1 was not running, I had to remove the snapshots of this node and now the server did start, but refuses to join the cluster.
This is the log from zookeeper:
2016-01-15…
![](../../users/profiles/84332.webp)
merlin
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0
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2 answers
How to add second ZooKeeper to same machine?
I am running 2 dedicated servers on which I plan to install Solrcloud. I have installed ZooKeeper using apt-get install zookeeperd and ZooKeeper is running on both systems.
From solr docs I learned that 3 zookeepers are recommended for…
![](../../users/profiles/84332.webp)
merlin
- 2,033
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0
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1 answer
Why does Accumulo require $ZOOKEEPER_HOME in addition to the IPs of the Zookeeper ensemble?
According to the documentation, Accumulo requires you to set $ZOOKEEPER_HOME (a local path) in the configuration files, and also requires a list of IPs for the Zookeeper ensemble. Why are IPs alone not sufficient?
What if your Zookeeper ensemble is…
![](../../users/profiles/302243.webp)
Ianvdl
- 45
- 6
0
votes
1 answer
HDFS' ZKFC service unable to start
CDH4's ZooKeeper Failover Controller (ZKFC) has been installed.
Starting the ZKFC service:
[vagrant@localhost ~]$ sudo service hadoop-hdfs-zkfc start
Starting Hadoop zkfc: [ OK ]
starting…
![](../../users/profiles/215599.webp)
030
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0 answers
Separate Apache Kafka clusters unreachable at the same time - kafka_network_socketserver_networkprocessoravgidlepercent goes to zero
We have 4 Kafka clusters:
ENV1: 6 brokers and 3 zookeepers
ENV2: 6 brokers and 3 zookeepers
ENV3: 8 brokers (on 2 DCs, 4-4 brokers) and 9 zookeepers (on 3 DCs, 3-3-3 nodes)
ENV4: 16 brokers (on 2 DCs, 8-8 brokers) and 9 zookeepers (on 3 DCs, 3-3-3…
![](../../users/profiles/979336.webp)
jakabl
- 1
0
votes
0 answers
Clickhouse server can't connect to Zookeeper
I am running Clickhouse server on a Azure VM and trying to create a table using ReplicatedMergeTree engine (following this guide: https://medium.com/@merticariug/distributed-clickhouse-configuration-d412c211687c).
I have zookeeper running on another…
![](../../users/profiles/967587.webp)
Heyb
- 1