Questions regarding new vertica installation on centOS 7
I am new to this. I wanted to make familiar myself with vertica. And due to this I have some questions regarding installation.
I downloaded vertica community edition vertica-9.2.1-0.x86_64.RHEL6.rpm
(installer says "...RHEL6.rpm", but actually this is the only one that I got from vertica website)
Installed this rpm on CentOS 7.6
I did all the necessary requirements. I decided to use LVM for the vertica data directory.
Then created cluster
# /opt/vertica/sbin/install_vertica --hosts <<hostname>> --rpm vertica-9.2.1-0.x86_64.RHEL6.rpm --data-dir /vertica
I then created database.
What I did notice, with the rpm installation I get 2 vertica systemd services
- verticad (not running at all, not enabled) - cannot start/stop it, service still shows inactive.
verticad service looks like this:
Description=Vertica server restart oneshot
- vertica_agent (running), and this cane be start/stop by systemd service.
What is the purpose of the above 2 services..?
And can I modify this verticad service so that this service will actually start/stop my database..?
So, at this time, I have come to conclude, that vertica can only be started with the following command
# su - dbadmin -c "admintools -t start_db -d mydb"
What is the difference in using either of these:
- $ admintools -t stop_host ...
- $ admintools -t stop_node ...