Questions tagged [cassandra]
Apache Cassandra is a free and open-source distributed NoSQL database management system.
0
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2answers
26 views
How to install Cassandra on Ubuntu 16.04
I want to install Cassandra on Ubuntu 16.04, and I'm not sure which version to use. How to find the right Cassandra version for 16.04?
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0answers
15 views
How to restrict Cassandra to fixed memory
We are using cassandra in order to collect the data from thingsboard. The memory it started with was 4GB (after executing the systemctl status for cassandra) and after 15 hours it has reached up to 9....
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0answers
308 views
How to resolve java : not found?
I execute the command sudo cassandra -R to start cassandra and I get the following error.
getopt: invalid option -- 'R'
/usr/sbin/cassandra: 158: exec: java: not found
It points to the following ...
0
votes
2answers
137 views
Error while installing cassandra
I tried to install cassandra many time by removing it,
but it always gives this error:
$ cqlsh
Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [(...
2
votes
1answer
91 views
What is a good way to create a low cost Ubuntu based Cassandra or Hadoop Cluster in my house?
I have a series of "old" data center servers (that I bought when my company upgraded) that I use to run Cassandra and Hadoop clusters at home. They are loud, power hungry and take up a lot of space ...
1
vote
2answers
1k views
How can /etc/apt/sources.list.d object be removed?
I have added
echo "deb http://www.apache.org/dist/cassandra/debian 311x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list
Now I want to remove it and install Cassandra in another ...
2
votes
0answers
912 views
Can not open,/var/log/cassandra/gc.log due to Permission denied
What do /var/log files serve for?When I try to run cassandra on my Ubuntu 16.04
OpenJDK 64-Bit Server VM warning: Cannot open file /var/log/cassandra/gc.log due to Permission denied
Later
19:47:58,...
2
votes
1answer
1k views
How do I get Cassandra to start when there is an error about “Connection refused”?
I installed Cassandra on Ubuntu 16.04. (I have gotten Cassandra to work on RedHat. But now I want it to work on Ubuntu.) The installation seemed to go smoothly. I run this command to prove that ...
0
votes
0answers
204 views
How to set iptables to secure a cassandra server?
im new to ubuntu, i am trying to create a cassandra cluster and secure it with iptables, i write iptables like this
$ -A INPUT -p tcp --dport 22 -j ACCEPT
$ -A INPUT -p tcp --dport 80 -j ACCEPT
$ -A ...
0
votes
1answer
314 views
Cassandra and CCM on Ubuntu, network loopback alias
Hi When I try to start CCM I get this error:
ccmlib.common.UnavailableSocketError: Inet address 127.0.0.1:9042 is not available: [Errno 98] Address already in use; a cluster may already be running or ...
1
vote
1answer
468 views
Unable to install Cassandra on Ubuntu 16.04
Running into this error while installing cassandra
Unpacking python-setuptools (30.3.0) ...
dpkg: error processing archive /var/cache/apt/archives/python-setuptools_30.3.0_all.deb (--unpack):
trying ...
0
votes
0answers
1k views
Unable to connect to server on VM- No route to host
Using Win7 host, Ubuntu 14.04 LTS guest, VM Player4.0 and Datastax 4.8.11 Cassandra 2.1.17
My application on the same VM is unable to connect to a service running on the same VM. Everything was ...
0
votes
0answers
246 views
Unable to login to default account after creating new account in ubuntu 16.04
I was trying to install cassandra in my local machine following this article
I created new group and user using the following commands as suggested in the article.
root@ubuntu:~# groupadd cassandra
...
1
vote
0answers
2k views
E: Package 'cassandra' has no installation candidate [duplicate]
Hi Everyone I try to install "Cassandra" on a 14.04 Ubuntu server.
I enter the ff code in the terminal "apt-get install cassandra" but I get the ff response:
Reading package lists... Done
Building ...
1
vote
2answers
2k views
error when running “apt-get install cassandra” [closed]
in ubuntu 14.10 when i try to install cassandra with this command "apt-get install cassandra " i have the following errors :
edit bodhi.zazen - translation from M.Info
Reading package lists ... Done
...
1
vote
1answer
5k views
Find the user under which a Ubuntu service runs?
I have a Cassandra service on my Ubuntu but I cannot figure under what user this service runs. I know how to find the owner and the permissions of files and directories. But how can I do this for a ...
1
vote
3answers
2k views
How to install Cassandra
I have downloaded dsc-cassandra-2.2.4-bin.tar.gz from http://www.planetcassandra.org/cassandra/ . How do I install it?
0
votes
2answers
290 views
mounting drive remotely on server
I'm doing a school project and we've been given access to some servers, so we can build a simple Cassandra database. I need to mount a drive on each instance -- there are four instances.
The ...
1
vote
0answers
983 views
Cannot able to connect to another host
After few self tests, I thought I'm having a telnet problem. So I am recreating a shorter version of this question
I have two machines:
cassandra is running on one machine using IP 172.17.1.XX.
???
...
1
vote
1answer
156 views
How can I configure multiple MaaS environments for juju?
i've realized a vMaaS with 3 vnodes where i deployed juju-gui (node1) and openstack in the other 2 nodes (node2,node3). These last ones at moment are in ready status on vMaaS. Then i've added other ...
2
votes
3answers
4k views
How do I work around a “stack size specified is too small” error in Java on POWER8?
I am trying to run Java applications (ElasticSearch and Cassandra) on Ubuntu (14.04) running on Power PC hardware using the OpenJDK. I ran into an error:
The stack size specified is too small, ...
4
votes
3answers
16k views
Can't start an application as service, but running as standalone process simply works
For a service although a pid file exists, but still when attempting to start service, it fails saying:
$ sudo service cassandra start
* could not access pidfile for Cassandra
I verified folder ...
0
votes
2answers
312 views
Please help me speedup my Ubuntu 12
top - 08:28:09 up 12:59, 2 users, load average: 0.59, 0.47, 0.35
Tasks: 200 total, 1 running, 199 sleeping, 0 stopped, 0 zombie
Cpu(s): 7.1%us, 2.7%sy, 0.0%ni, 88.1%id, 2.0%wa, 0.0%hi, 0....
