Install a cluster
To install a cluster, you need:
Apply the Install action to the cluster selected in the CLUSTERS tab.Proceed to cluster installation
In the dialog box that opens, select the required options for installation.Selecting options for installation
The purpose of the parameters is given below.
Disable SELinux on added hosts. In order for this setting to be applied, after the completion of the Install operation, you must restart the hosts manually
Disabling firewalld on hosts
Install package java-1.8.0-openjdk on hosts
Set vm.swappiness to 0
Disabling swapping on hosts
Write added nodes to /etc/hosts on cluster hosts. It is recommended to disable this option if DNS is configured
Confirm the action in the window by clicking Run.
Wait until the job is completed.
ADCM starts a single job for installation process, as well as for any other task. You can find out about the status of jobs more specifically at the JOBS tab.
NOTEThe status of ADCM jobs is displayed in the upper-right corner of the web interface. The yellow circle represents the number of running jobs, and the green and red circles represent the number of successfully and unsuccessfully completed jobs, respectively. You can move to the necessary block of jobs by clicking at the corresponding circle.
The successful completion of the service installation is determined by the transition of the job from the
running status to the
success status at the JOBS tab. If the job fails, it switches to the
failed status. In this case it is possible to see more detailed information about the errors that occurred via clicking the failed job at the JOBS tab.
A job page contains two sections displayed at the left side of the screen: ansible [ stdout] and ansible [ stderr ]. These are technical logs of the job that include information from standard I/O streams stdout/stderr. These logs can help to understand what caused the problems.
There can also be the optional third section ansible [ check ]. These are the logs of the most frequent errors checks. The description of these errors is more simple and specific, than in two previous technical logs.
The contents of all three sections should be studied, if errors occur.
As a result of successful installation, the cluster and its services change their state according to the following rules:
The cluster state, displayed in the State field at the CLUSTERS tab, is being changed from
installed.The cluster state after successful installation
The service status displayed on the Services tab in the cluster menu changes from
installed.Status of cluster service after successful installation