How do I get the cluster versions on Solana?
For example, I'd like to know the current version of the devnet cluster.
Is there a command line or website which tells me the current versions?
Yes there is a CLI and here is a link to how to get the cluster version.
https://docs.solana.com/cli/choose-a-cluster#ensure-versions-match
Related
I have installed elasticsearch version 7.2.6 on CentOS 7.x with cPanel on it. However, after installing it, elasticsearch service is not running. Here is the screen capture of the error. I have already tried. https://support.cpanel.net/hc/en-us/articles/360055446413-How-To-Install-Run-Elasticsearch but the issue is not resolved. Any help will be appreciated.
I have set my IP address in network.host
You probably have data from an older ES install. If you're installing a new version and want to keep your older data, you need to go through the upgrade path.
otherwise, if you don't care about your older data and simply want to install the newer version, simply delete the content of /var/lib/elasticsearch and install the new version.
We have a 3-node cluster with ElasticSearch 6.4.3 on Ubuntu 16.04. There is nothing existing outside of the fresh install of ES - no indexes, no Kibana, no Beats, no Logstash, etc.
I have been asked to downgrade to version 6.4.2. I have limited Linux experience, but enough to be able to run command line commands and understand the output. Google has lead me to bits and pieces around accomplishing this, but I'd feel a lot less anxiety around it if someone with ES experience may be able to point me to something that's a bit more step-by-step.
I do have this link to download 6.4.2, but one of the things I need to know is which file to download: https://www.elastic.co/downloads/past-releases/elasticsearch-6-4-2
Sure here you go with step by step guide, As I did this for you, using your version.
Using this link https://www.elastic.co/downloads/past-releases/elasticsearch-6-4-2, which you mentioned, download the tar file to your local system.
Use SCP to transfer the .tar file to your ubuntu instance, I used my AWS ubuntu instance.
scp -i ~/your-identity-file ~/Desktop/elasticsearch-6.4.2.tar.gz
ubuntu#aws-ec2-instance-ip:/home/ubuntu
Untar file using tar -xvf elasticsearch-6.4.2.tar.gz command.
Go to config folder like cd elasticsearch-6.4.2/config/ and set the proper values in elasticsearch.config.
Start the elasticsearch from bin folder ./elastic command.
Update:- Based on the chat with OP, Adding official ES link https://www.elastic.co/guide/en/elasticsearch/reference/current/targz.html and https://www.elastic.co/guide/en/elasticsearch/reference/current/install-elasticsearch.html for detailed instruction.
While installing greenplum we are getting below error after running gpcheck command
GPCHECK_ERROR : uname -r output is different among hosts.
on two machines we have installed centos6 and in one machine we have installed centos7.
for greenplum installation is it necessary all hosts should have same os version?
should we ignore this error and go ahead.?
You must have the same OS version on all the cluster machines. Greenplum home directory is used for installing gppkgs (add-ons) that are in fact packed rpms. Greenplum initializes rpm database inside of GPDB home directory for managing add-ons. Whenever you do "gpseginstall" (installation, expansion), GPDB copies the content of GPDB home directory to other hosts. However RPM database created on one version of OS is not valid on another, so you would get errors trying to install/list/remove packages there
In general, if you don't plan to use any gppkgs and use it merely for PoC purposes, this should work, but I would strongly recommend to use the same OS version on all the cluster hosts
It is recommended to have same OS (kernel). If it is not production environment you can give try ignoring it. I have never tested it.
I am new to HBase and installed the 0.20.6 version on Cygwin as that is the requirement of my project. The master is running along with Hregionserver. However, when I try to create a table in the HBase shell, there does not seem to be any response.
When I see the list of commands, none of the table related commands are seen. How do I resolve this? Please see the screenshot.
As reported on the documentation
"HBase requires that a JDK be installed"
But there is no Java on Cygwin, so you can not have a cygwin version of HBase.
When connecting to Hadoop cluster, how can I know which version of Hadoop this cluster is running? In particular this is important for proper configuration of libraries when compiling and packaging Hadoop Java jobs with Maven.
The simplest way if you have ssh access to hadoop node is by running command
$ hadoop version
If you are looking for CDH version then check /usr/lib/hadoop/cloudera/cdh_version.properties
In cdh, in the cluster I am using, there is not any cdh_version.properties (or I couldn't find it)
If your cluster uses "Parcels", you could check which version of cdh is used by doing:
/opt/cloudera/parcels
And you could see the version as the name of the folder:
CDH-5.5.1-1.cdh5.5.1.p0.11
Note: I know that this is a not a general rule for getting which cdh version is used. I am trying to show an alternative way that it worked to me.
We can check the installed version with the help of following command:
cat /usr/lib/hadoop/cloudera/cdh_version.properties
Hope this may help you.