IT46240: MISSING DOCUMENTATION TO CHANGE THE DOCKER0 INTERFACE IP RANGE

APAR status

• Closed as documentation error.

Error description

• The IBM Spectrum Protect Plus documentation is missing the
  following procedure to allow to change the docker0 interface
  IP address :
  
  1. If it exists, make a safe copy of the file
    /etc/docker/daemon.json to allow for rollback.
  2. Edit/Create the /etc/docker/daemon.json file with the desired
  
    IP range that will not conflict with the existing networks.
    For example, for network range '192.168.168.1/24',
    the daemon.json will look like :
       {
         "exec-opts": ["native.cgroupdriver=systemd"],
         "log-driver": "json-file",
         "log-opts":
       {     "max-size": "100m"   }
       ,
         "storage-driver": "overlay2",
         "storage-opts": [
           "overlay2.override_kernel_check=true"
         ],
         "bip": "192.168.168.1/24"
       }
  3. Reboot the IBM Spectrum Protect Plus appliance.
  4. Verify the IP range changed to the desired value with the
    command :
    ip addr show
  
  This setup will be persistent through IBM Spectrum Protect Plus
  upgrades.
  
  IBM Spectrum Protect Plus Versions Affected:
  IBM Spectrum Protect Plus 10.1.x
  
  Additional Keywords: SPP, SPPLUS, TS016191914
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  *  IBM Spectrum Protect Plus 10.1.16 and later                 *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * This issue is seen when attempting to access the IBM Storage *
  * Protect Plus dashboard on the public interface that uses IP  *
  * range 176.16.x.x. The return traffic going back to the VPN   *
  * on 172.16.x.x is routed via the default docker0 interface    *
  * rather than the expected public interface since it has a     *
  * direct connection to the 172.16.x.x range.                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• The IBM Spectrum Protect Plus documentation was updated with the
  procedure to change the docker0 interface IP address
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels