What Are Common Problems During Cloud-Init Installation?

Ubuntu 16.04/CentOS 7: Failed to Set Cloud-Init Automatic Start

• Symptom

  After Cloud-Init is installed, run the following command to enable Cloud-Init automatic start:

  systemctl enable cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

  Information similar to the following is displayed:

  Figure 1 Failed to enable Cloud-Init automatic start
  
• Solution
  1. Run the following command:

     systemctl unmask cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

  2. Run the following command to enable automatic start again:

     systemctl enable cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

  3. Run the following command to check the Cloud-Init status:

     systemctl status cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

     As shown in the following figures, failed is displayed and all services are in the inactive state.

     This is because the system looks for Cloud-Init in /usr/bin/, but it is actually installed in /usr/local/bin.

     Figure 2 Checking Cloud-Init status
     
     Figure 3 Checking Cloud-Init status
     
  4. Run the cp /usr/local/cloud-init /usr/bin/ command to copy the cloud-init file to the /usr/bin path, and then run the following command to restart Cloud-Init:

     # systemctl restart cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

     Figure 4 Restarting Cloud-Init
     
  5. Run the following command to check the Cloud-Init status:

     systemctl status cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

Ubuntu14.04: chkconfig and systemctl Not Installed

• Symptom

  chkconfig is not installed.

• Solution

  Run the following commands to install chkconfig on Ubuntu14.04:

  # apt-get update

  # apt-get install sysv-rc-conf

  # cp /usr/sbin/sysv-rc-conf /usr/sbin/chkconfig

  After the installation completes, run the following command to query the Cloud-Init version:

  cloud-init -v

  Information similar to the following is displayed:

  -bash:/usr/bin/cloud-init:not found this command

  Solution: Run the following command to copy the cloud-init file to the /usr/bin path:

  # cp /usr/local/bin/cloud-init /usr/bin/

Debian 9.5: Failed to Query the Cloud-Init Version and Set Automatic Start

1. After Cloud-Init is installed, run the following command to query its version:

   cloud-init -v

   Information similar to the following is displayed:

   -bash:/usr/bin/cloud-init:not found this command

   Solution: Run the # cp /usr/local/bin/cloud-init /usr/bin/ command to copy the cloud-init file to the usr/bin directory.

2. Run the cloud-init init --local command.

   Information similar to the following is displayed:

   Figure 5 Information returned when Cloud-Init automatic start is successfully set
   

   Cause analysis: The compilation fails because the GNU compiler collection (GCC) is not installed.

   Solution

   After GCC is installed, run the following command to install Cloud-Init:

   yum -y install gcc

3. After Cloud-Init is installed, run the following command to set Cloud-Init automatic start:

   systemctl enable cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

   Information similar to the following is displayed:

   Figure 6 Failed to set Cloud-Init automatic start
   

   Solution

   1. Run the following command:

      # systemctl unmask cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

   2. Run the following commands to set automatic start again:

      # systemctl enable cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

   3. Run the following command to restart Cloud-Init:

      # systemctl restart cloud-init-local.service cloud-init.service cloud-config.service cloud-final.service

      Run the systemctl status command to check the Cloud-Init status. Information similar to the following is displayed:

      Figure 7 Checking the Cloud-Init status
      

CentOS 7/Fedora 28: Required C Compiler Not Installed

• Symptom

  After Cloud-Init is installed, run the following command:

  cloud-init init --local

  The following information is displayed:

  /usr/lib/python2.5/site-packages/Cheetah/Compiler.py:1532: UserWarning: 
  You don't have the C version of NameMapper installed! I'm disabling Cheetah's useStackFrames option as it is painfully slow with the Python version of NameMapper. You should get a copy of Cheetah with the compiled C version of NameMapper.
    "\nYou don't have the C version of NameMapper installed!

• Possible Cause

  This alarm is generated because the C version of NameMapper needs to be compiled when installing Cloud-Init. However, GCC is not installed in the system, and the compilation cannot be performed. As a result, the C version of NameMapper is missing.

• Solution

  Run the following command to install GCC:

  yum -y install gcc

  Reinstall Cloud-Init.

CentOS 7/Fedora: Failed to Use the New Password to Log In to the Server Created from a Backup After Cloud-Init Is Successfully Installed

• Symptom

  After Cloud-Init is installed, the new password cannot be used to start the new server. After logging in to the server using the old password, you find the NIC is not started.

  Figure 8 NIC not started
  
• Solution

  Log in to the server, open the DHCP configuration file /etc/sysconfig/network-scripts/ifcfg-ethX, and comment out HWADDR.