What is the default user for logging into the YI-MapReduce Manager after activating a YI-MapReduce clusters?
Upon activating a YI-MapReduce clusters, the system defaults to the "op_admin" account for login into the YI-MapReduce Manager. Users can access the YI-MapReduce Manager directly through password-free login from the YI-MapReduce console.
How can I change and apply the passwords for the related big data components after activating a YI-MapReduce clusters?
1. You can go to the YI-MapReduce console and select a YI-MapReduce clusters from My Cluster to adjust the account password.
2. After selecting the relevant cluster, click on the YI-MapReduce Manager tab of the cluster to access the YI-MapReduce Manager control platform through password-free login.
3. In the O&M and Configuration - Configuration Management function menu, switch between different component services such as HDFS, ZooKeeper, etc. Then, identify the passwords to be adjusted, complete the configuration changes, and click Save Changes at the bottom right.
4. Click the Configuration Sync button. Follow the instructions to complete the distribution of the new configuration.
5. Go to the Cluster Service function menu. Locate the corresponding component service and go to its details page. From the O&M Operations dropdown menu, execute the cluster restart at the top-right to apply the cluster configuration changes.
How to change the password for the root account used to log in to a node after activating the YI-MapReduce cluster?
1. You can go to the YI-MapReduce console and select a YI-MapReduce clusters from My Cluster to adjust the account password used to log in to a node.
2. After selecting the relevant cluster, go to Node Management of the cluster, click Remote Connection on the right side of the specific node, and access the server system by entering the account and password required in the VNC console.
3. In the node command line, type "passwd root" to complete the password change for the root account.