HDFS JournalNode Partition Directory Mounting Hard Disk Failure

Latest reply: Aug 21, 2019 08:00:05 194 7 10 0

Precondition

If the hard disk of the node in the cluster is faulty, you need to check the steps of Replacing the Hard Disk. After confirming that you need to replace the hard disk, follow the steps below.


Processing steps

Step 1 Log in to FusionInsight Manager.


Step 2 Click Service Management > HDFS > Instance.


Step 3 Select the JournalNode instance process on the disk faulty server and choose More Actions > Stop Instance to stop the process.


Step 4 Restore the original RAID array of the hard disk. For details, contact the hardware manufacturer. After the operating system can recognize the newly added hard disk (execute the lsscsi command), you need to manually complete the disk formatting and directory mounting operations.

1. Use the PuTTY tool to log in to the server with the hard disk as the root user. Run the mkfs.ext4 /dev/sdx command on the RedHat system to format the disk. Run the mkfs.ext3 /dev/sdx command on the SuSE system to format the disk. (sdx is the hard disk that is queried)

2. After the formatting is complete, check whether the previously mounted directory exists. If it does not exist, create the "/srv/BigData/journalnode" directory and execute the chmod 000 /srv/BigData/journalnode command.

3. Run the blkid command to query the UUID information of the disk, and then edit the /etc/fstab file to replace the UUID information of the original failed disk with the new UUID information.

4. Execute the mount -a command to complete the mount.


Step 5 Log in to the JournalNode server to be restored as the root user by using the PuTTY tool to view and modify the mount path permissions.

Chown omm:wheel -R /srv/BigData/journalnode

Chmod 700 /srv/BigData/journalnode


Step 6 Start the stopped JournalNode process on the FusionInsight Manager interface and check whether the status is normal.


Step 7 Check whether the hacluster directory is generated under the /srv/BigData/journalnode path.

----End


  • x
  • convention:

xiaomumu
Created Dec 27, 2018 06:29:41 Helpful(0) Helpful(0)

HDFS JournalNode partition directory mount,Can you explain that in more detail?
  • x
  • convention:

dagui
Created Dec 27, 2018 06:55:13 Helpful(0) Helpful(0)

Log in to the JournalNode server to be restored as the root user by using the PuTTY tool to view and modify the mount path permissions.Can you provide a more detailed explanation?
  • x
  • convention:

liwaye
Created Dec 27, 2018 07:02:27 Helpful(0) Helpful(0)

its very helpful but i still dont understand if there is some photo in your post maybe more clear
  • x
  • convention:

yiyi0519
Created Dec 27, 2018 07:52:32 Helpful(0) Helpful(0)

HDFS is highly fault-tolerant and designed to be deployed on low-cost hardware. And it provides high throughput to access application data, suitable for applications with large data sets. HDFS relaxes the requirements of POSIX (requirements) so that streaming data can be accessed in the file system.
  • x
  • convention:

user_2915719
Created Dec 27, 2018 08:23:11 Helpful(0) Helpful(0)

If the Journal Node has corrupted, can we recover data and get the system back to work?
  • x
  • convention:

Hain
Created Dec 27, 2018 09:09:11 Helpful(0) Helpful(0)


it provides high throughput to access application data, suitable for applications with large data sets. HDFS relaxes the requirements of POSIX (requirements) so that streaming data can be accessed in the file system?











.



  • x
  • convention:

user_3523907
Created Aug 21, 2019 08:00:05 Helpful(0) Helpful(0)

hi there,
here is another way, please kindly try FoneDog Android  Data Recovery
just a several steps:
1. Launch FoneDog android Data Recovery and Connect Your Phone to Computer.
2. Enable USB Debugging on your phone
3. Choose File Types to Scan on Your Phone.
  • x
  • convention:

Reply

Reply
You need to log in to reply to the post Login | Register

Notice Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."
If the attachment button is not available, update the Adobe Flash Player to the latest version!
Login and enjoy all the member benefits

Login and enjoy all the member benefits

Login