I'm using Opscenter to manage my Cassandra cluster. Opscenter is started after my Cassandra cluster is already running. When opening Opscenter on my browser at port 8888 I have to manually give the Cassandra master's IP.
Due to my deployment (Kubernetes and Docker) it's a schlep to get the IP of the Cassandra master. Is there a config I can edit to automatically connect to the master at startup? I am able to find the master IP using a bash command - I just want to specify it in a config file.
One thing you can try, is to provide OpsCenter with a configuration file for your cluster. If you installed OpsCenter in /etc, that file should be in the /etc/opscenter/clusters directory, and it's filename should match the name of your cluster (with underscores for special characters and spaces). The contents of that file should look something like this:
$ cat clusters/DEV_LOAD_TEST.conf
[jmx]
username =
password =
port = 7199
[kerberos_client_principals]
[kerberos]
[agents]
[kerberos_hostnames]
[kerberos_services]
[cassandra]
username = devadmin
seed_hosts = 10.0.0.4, 10.0.0.9, 10.0.0.6
api_port = 9160
password = reindeerflotillaSee Dennis' link above for more detailed config information. Note, that link is for OpsCenter 5.1, so be sure to double-check your version when looking up DataStax documentation.