Yum updates fail with disk space error


When running the "yum update" command to update all packages on the system to the latest release, the Yum process exits with an error.


[[email protected] ~]$ sudo yum --nogpgcheck update -y 
Loaded plugins: amazon-id, search-disabled-repos
rhel-7-server-rhui-rh-common-rpms                                        | 2.1 kB  00:00:00
rhel-7-server-rhui-rpms                                                  | 2.0 kB  00:00:00
rhui-client-config-server-7                                              | 2.1 kB  00:00:00
(1/9): rhel-7-server-rhui-rh-common-rpms/7Server/x86_64/updateinfo       |  34 kB  00:00:00
(2/9): rhel-7-server-rhui-rh-common-rpms/7Server/x86_64/group            |  124 B  00:00:00
(3/9): rhel-7-server-rhui-rh-common-rpms/7Server/x86_64/primary          |  65 kB  00:00:00
(4/9): rhel-7-server-rhui-rpms/7Server/x86_64/group                      | 772 kB  00:00:00
(5/9): rhel-7-server-rhui-rpms/7Server/x86_64/updateinfo                 | 3.6 MB  00:00:00
(6/9): rhui-client-config-server-7/x86_64/group                          |  124 B  00:00:00
(7/9): rhui-client-config-server-7/x86_64/updateinfo                     |   92 B  00:00:00
(8/9): rhui-client-config-server-7/x86_64/primary                        | 1.4 kB  00:00:00
(9/9): rhel-7-server-rhui-rpms/7Server/x86_64/primary                    |  42 MB  00:00:00
rhel-7-server-rhui-rh-common-rpms                                                      242/242
rhel-7-server-rhui-rpms                                                  27010/27010
Transaction check error:
  installing package python-perf-3.10.0-1062.12.1.el7.x86_64 needs 26MB on the /var filesystem
  installing package sqlite-3.7.17-8.el7_7.1.x86_64 needs 26MB on the /var filesystem
  installing package sudo-1.8.23-4.el7_7.2.x86_64 needs 26MB on the /var filesystem
  installing package NetworkManager-config-server-1:1.18.0-5.el7_7.2.noarch needs 27MB on the /var filesystem
  installing package kernel-3.10.0-1062.12.1.el7.x86_64 needs 64MB on the /var filesystem
  installing package binutils-2.27-41.base.el7_7.2.x86_64 needs 65MB on the /var filesystem
Error Summary
Disk Requirements:
  At least 65MB more space needed on the /var filesystem.


The 1gb allocated to the /var filesystem in our images by default is not sufficient for processing large system updates.


As part of our documentation, we recommend that you define your volume sizes during the build process to ensure they contain enough space to operate your application on a day-to-day basis.  Considering that 1 gigabyte may no longer be a sufficient storage size for /var in maintaining the RedHat Enterprise Linux system, we will be changing this volume to be 2 gigabytes in future releases.

For existing systems, please follow Amazon's instructions to resize the /dev/xvdl volume as appropriate - All volumes in our AMIs are formatted as XFS partitions, so the standard instructions should apply.

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