When I try to initialize the cluster in offline mode (VM host doesn't have internet access) with webUI or with the following command
memsql-ops memsql-deploy --role single_box
I get this error:
J369767 [ERROR] Failed to download MemSQL: File with type MEMSQL and version d78c76bb960feb6e38a46977e7c95c2de7838c1e was added with file hash 911230f9e35a42cb756b0cc27398b9c1 but now has file hash None
However, the memsqlbin_amd64 file was previously successfully added with this command:
memsql-ops file-add -t memsql /memsql/distr/memsqlbin_amd64.tar.gz
How I can resolve this problem?
Try reinstalling the singlestore Tools on the server.
I would rather suggest to follow the guidelines mentioned in the official documentation link.
Related
I have my community 4.1.1 neo4j service installed on the ubuntu commandline running on my windows machine. I have been using neo4j steadily for a month or two now, just recently it has prevented me from accessing the neo4j database, it will say this in neo4j browser:
Database 'neo4j' is unavailable. Run :sysinfo for more info.
I have tried uninstalling neo4j and reinstalling but that has not worked either. I tried playing around with the default listen address previously, but now with the reinstall all config data is back to normal. Running ./neo4j-community-4.1.1/bin/cypher-shell under bin does not work. It says:
Unable to establish connection in 3000ms
If I run ./neo4j-community-4.1.1/bin/cypher-shell -a 192.168.0.19 it says:
Database 'neo4j' is unavailable
When I run ./neo4j-community-4.1.1/bin/neo4j-admin check-consistency --database=neo4j it also states:
.2020-08-18 22:12:16.868+0000 WARN [o.n.c.ConsistencyCheckService] Index was dirty on startup which means it was not shutdown correctly and need to be cleaned up with a successful recovery. Index file: /home/thomp105/neo4j-community-4.1.1/data/databases/neo4j/neostore.relationshipgroupstore.db.id.
I would love to reset everything from scratch but I am unsure how
At this point I cannot even access the browser at localhost:7474. It hangs indefinitely trying to load.
I am truly stumped. Anyone have any advice on how I navigate this issue?
It's not easy to guess the issue without seeing your system, but may I ask if you can try to delete your default database, i.e. neo4j physically from the disk (e.g. rm -rf /home/thomp105/neo4j-community-4.1.1/data/databases/neo4j/), and then try to create another database with different name instead (open neo4j.conf, search for dbms.active_database, which point out on default database, and change it to some other name)?
I had this problem running on a linux server. The server was up but got this error on any query: Database 'neo4j' is unavailable. To troubleshoot I ran sudo neo4j console and the problem went away. When I ran the console as user ne04j the problem came back.
$ /usr/share/neo4j/bin/neo4j console
Directories in use:
home: /var/lib/neo4j
config: /etc/neo4j
logs: /var/log/neo4j
plugins: /var/lib/neo4j/plugins
import: /var/lib/neo4j/import
data: /var/lib/neo4j/data
certificates: /var/lib/neo4j/certificates
run: /var/run/neo4j
So I tried: sudo chown -R neo4j:neo4j /var/lib/neo4j/data and the problem went away. Apparently when I'd done a restore of the database I'd run the neo4j server as root and when the system runs neo4j it does it as the user neo4j so couldn't read any of its data. It seems that an error like this would warrant an easy to parse error message but verbosity is not the neo4j way.
I need to install Apache Spot on Ubuntu.
http://spot.incubator.apache.org/doc/#installation
I have already did the setup of a single node cluster of Hadoop following this guide:
https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SingleCluster.html
And i already have installed Hive, Kafka and Spark following the guides written in Apache documentation.
The main problem is that I'm not able to configure the file '/spot-setup/spot.conf' properly because when i run the command:
./hdfs_setup.sh
the Terminal displays:
sudo: unknown user: hdfs
sudo: unable to initialize policy plugin
./hdfs_setup.sh:line 48:hdfs:command not found
./hdfs_setup.sh:line 52:hdfs:command not found
./hdfs_setup.sh: line 62:impala-shell:command not found
my /etc/hosts file is:
127.0.0.1 localhost
127.0.1.1 osboxes
127.0.0.2 node03
127.0.0.3 node04
127.0.0.4 node16
Which values should I write in the rows of spot.conf?
Thank you very much.
Script output implies that hadoop is not properly configured in that node. Instead of installing and configuring the dependencies individually you can try cloudera quickstart vm which packages all the dependencies required for Apache Spot.
I'm quite new to Linux but have to get through it for an assignment. I have to send jobs to a Hadoop cluster. I'm sending these jobs inside a Docker container. To access the cluster i have to use the following command: kinit <username>#CUA.SURFSARA.NL . Now of course I've substituted for my actual username. This command works fine inside the Docker container. But to access a resource manager I have to start Firefox from a Kerberos authenticated terminal, this is where I'm running into trouble.
The same command in a fresh terminal results in the following:
kinit: Cannot contact any KDC for realm 'CUA.SURFSARA.NL' while getting initial credentials
Currently I'm suspecting this is caused by missing Kerberos packages.
The command that was giving in the instructions to get these is this:
sudo dnf install krb5-workstation krb5-libs krb5-auth-dialog
However, dnf doesn't work (Ubuntu instead of Fedora?) so I tried apt-get.
But doing that it is unable to locate the krb5-workstation and krb5-libs packages.
How can I get these missing packages? And will this solve the contacting KDC problem?
Please make sure your /etc/hosts file is same as before when you installed KDC.
Once I installed kdc in my lxc but after a day I couldn't start kdc for this type of error that you have got. And make sure that your Kerberos server and client are pingable(ping IP) to each other.
This is super old, but I wanted to say that you'll likely need to stop and start the service once you've edited your /etc/hosts file. At least that was the fix for me.
systemctl stop krb5kdc.service
systemctl start krb5kdc.service
Then do "kinit" again or "kinit -k", then klist. You should now see a ticket.
I want to connect to cassandra but got this error:
$ bin/cqlsh
Connection error: ('Unable to connect to any servers', {'192.168.1.200': error(10061, "Tried connecting to [('192.168.1.200', 9042)]. Last error: No connection could be made because the target machine actively refused it")})
Pretty simple.
The machine is actively refusing it because your system does not have cassandra running on it. Follow the following steps to completely get rid of this trouble :
Install Cassandra from DataStax (Datastax-DDC; Cassandra version 3).
Go to ~\installation\path\DataStax-DDC\apache-cassandra\bin.
Open up cmd there. (Use Alt+F+P to open it if you are on windows 8 or later).
type cassandra -f this will generate a lot of stuff on the window and you must get the last line as INFO 11:32:31 Created default superuser role 'cassandra'
Now open another cmd window in the same folder.
Type cqlsh
This should give you a prompt, without any error.
I also discovered that this error doesn't pop up if I use cassadra v2.x found here Archived version of Cassandra. I don't know why :( (If you find out please comment).
So, if the above steps do not work, you can always go back to Cassandra v2.x.
Cheers.
Check if you have started Cassandra server, then provide the host and port as the arguments.
$ bin/cqlsh 127.0.0.1 4092
I run into the same problem. This worked for me.
Go to any directory for example E:\ (doesn't have to be the same disc as the cassandra installation)
Create the following directories
E:\cassandra\storage\commitlogs
E:\cassandra\storage\data
E:\cassandra\storage\savedcaches
Then go to your cassandra installations conf path. In my case.
D:\DataStax-DDC\apache-cassandra\conf
Open cassandra.yaml. Edit the lines containing: data_file_directories, commitlog_directory, saved_caches_directory to look like the code below (change paths accordingly to where you created the folders)
data_file_directories:
- E:\cassandra\storage\data
commitlog_directory: E:\cassandra\storage\commitlog
saved_caches_directory: E:\cassandra\storage\savedcaches
Then open the cmd (I did it as administrator, but didn't check if it is necessary) to your cassandra installations bin path. In my case.
D:\DataStax-DDC\apache-cassandra\bin
run cassandra -f
Lots of stuff will be logged to your screen.
You should now be able to run cqlsh and all other stuff without problems.
Edit: The operating system was windows10 64bit
Edit2: If it stops working after a while check if the service is till running using nodetool status. If it isn't follow this instruction.
I also faced the same problem on a Win32 windows 7 machine.
Check if you have JAVA installed correctly and JAVA_HOME variable set.
Once you have checked the java installation and set JAVA_HOME, uninstall Cassandra and install it again.
Hopefully this would solve the problem. Mine was solved after applying the above two steps.
You need to mention host, user, password for cassandra cqlsh connection. Default cassandra cqlsh user is cassandra and password is cassandra.
$ bin/cqlsh <host> -u cassandra -p cassandra
I also had same problem. I applied many methods given on google and youtube but none of them worked in my case. Finally, I applied the following 3 steps and it worked in my case:-
Create a folder without any space in C or D whichever is your system drive. eg:- C:\cassandra
Install Cassandra in this folder instead of installing in"Program Files".
After installation, it will be like this- C:\cassandra\apache-cassandra-3.11.6
Copy python 2.7 installed in bin folder i.e.,C:\cassandra\apache-cassandra-3.11.6\bin
Now your program is ready for work.
There is no special method to connect cqlsh it simple as below:-
$ bin/cqlsh 127.0.0.1(host IP) 9042 or $ bin/cqlsh 127.0.0.1(host IP) 9160 (if older version of Cassandra)
Don't forget to check port connectivity if you are connecting cqlsh to remote host. Also you can use username/password if you enabled by default it is disabled.
I've installed DataStax OpsCenter (Apache Cassandra) and in OpsCenter, there is an error: "0 of 1 agents connected". When I click "fix", enter credentials and try to install nodes, i get error:
Unable to SSH to some of the hosts
Unable to SSH to 127.0.0.1:
global name 'get_output' is not defined
Does anyone have any ideas how to fix it?
I fixed the problem with instruction from stackoverflow
The reason is OpsCenter could not find correct cassandra config file (cassandra.yaml).
In my case I installed cassandra to "D:\DataStax" instead of default location "C:\Program Files\DataStax Community". Add conf_location to opscenter\conf\clusters\local.conf solved my problem.
This is my final setting:
conf_location = [DataStax Install Dir]\apache-cassandra\conf\cassandra.yaml