15.2. 단일 노드 OpenShift 클러스터에 대한 이미지 기반 업그레이드 준비

프로세스

1. storage.bu 파일을 생성합니다.

   variant: fcos
   version: 1.3.0
   storage:
     disks:
     - device: /dev/disk/by-path/pci-<root_disk> 

   1

   
       wipe_table: false
       partitions:
       - label: var-lib-containers
         start_mib: <start_of_partition> 

   2

   
         size_mib: <partition_size> 

   3

   
     filesystems:
       - path: /var/lib/containers
         device: /dev/disk/by-partlabel/var-lib-containers
         format: xfs
         wipe_filesystem: true
         with_mount_unit: true
         mount_options:
           - defaults
           - prjquota

   1

   root 디스크를 지정합니다.

   2

   MiB로 파티션의 시작을 지정합니다. 값이 너무 작으면 설치에 실패합니다.

   3

   사전 캐시된 이미지에 적절한 디스크 공간을 확보하려면 500GB 파티션의 최소 크기를 지정합니다. 값이 너무 작으면 설치 후 배포가 실패합니다.

2. 다음 명령을 실행하여 storage.bu 를 Ignition 파일로 변환합니다.

   $ butane storage.bu

   출력 예

   {"ignition":{"version":"3.2.0"},"storage":{"disks":[{"device":"/dev/disk/by-path/pci-0000:00:17.0-ata-1.0","partitions":[{"label":"var-lib-containers","sizeMiB":0,"startMiB":250000}],"wipeTable":false}],"filesystems":[{"device":"/dev/disk/by-partlabel/var-lib-containers","format":"xfs","mountOptions":["defaults","prjquota"],"path":"/var/lib/containers","wipeFilesystem":true}]},"systemd":{"units":[{"contents":"# Generated by Butane\n[Unit]\nRequires=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\nAfter=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\n\n[Mount]\nWhere=/var/lib/containers\nWhat=/dev/disk/by-partlabel/var-lib-containers\nType=xfs\nOptions=defaults,prjquota\n\n[Install]\nRequiredBy=local-fs.target","enabled":true,"name":"var-lib-containers.mount"}]}}

3. SiteConfig CR의 .spec.clusters.nodes.ignitionConfigOverride 필드에 출력을 복사합니다.

   [...]
   spec:
     clusters:
       - nodes:
           - hostName: <name>
             ignitionConfigOverride: '{"ignition":{"version":"3.2.0"},"storage":{"disks":[{"device":"/dev/disk/by-path/pci-0000:00:17.0-ata-1.0","partitions":[{"label":"var-lib-containers","sizeMiB":0,"startMiB":250000}],"wipeTable":false}],"filesystems":[{"device":"/dev/disk/by-partlabel/var-lib-containers","format":"xfs","mountOptions":["defaults","prjquota"],"path":"/var/lib/containers","wipeFilesystem":true}]},"systemd":{"units":[{"contents":"# Generated by Butane\n[Unit]\nRequires=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\nAfter=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\n\n[Mount]\nWhere=/var/lib/containers\nWhat=/dev/disk/by-partlabel/var-lib-containers\nType=xfs\nOptions=defaults,prjquota\n\n[Install]\nRequiredBy=local-fs.target","enabled":true,"name":"var-lib-containers.mount"}]}}'
   [...]

검증

1. 설치 중 또는 설치 후 hub 클러스터에서 BareMetalHost 오브젝트가 다음 명령을 실행하여 주석을 표시하는지 확인합니다.

   $ oc get bmh -n my-sno-ns my-sno -ojson | jq '.metadata.annotations["bmac.agent-install.openshift.io/ignition-config-overrides"]'

   출력 예

   "{\"ignition\":{\"version\":\"3.2.0\"},\"storage\":{\"disks\":[{\"device\":\"/dev/disk/by-path/pci-0000:00:17.0-ata-1.0\",\"partitions\":[{\"label\":\"var-lib-containers\",\"sizeMiB\":0,\"startMiB\":250000}],\"wipeTable\":false}],\"filesystems\":[{\"device\":\"/dev/disk/by-partlabel/var-lib-containers\",\"format\":\"xfs\",\"mountOptions\":[\"defaults\",\"prjquota\"],\"path\":\"/var/lib/containers\",\"wipeFilesystem\":true}]},\"systemd\":{\"units\":[{\"contents\":\"# Generated by Butane\\n[Unit]\\nRequires=systemd-fsck@dev-disk-by\\\\x2dpartlabel-var\\\\x2dlib\\\\x2dcontainers.service\\nAfter=systemd-fsck@dev-disk-by\\\\x2dpartlabel-var\\\\x2dlib\\\\x2dcontainers.service\\n\\n[Mount]\\nWhere=/var/lib/containers\\nWhat=/dev/disk/by-partlabel/var-lib-containers\\nType=xfs\\nOptions=defaults,prjquota\\n\\n[Install]\\nRequiredBy=local-fs.target\",\"enabled\":true,\"name\":\"var-lib-containers.mount\"}]}}"

2. 설치 후 다음 명령을 실행하여 단일 노드 OpenShift 디스크 상태를 확인합니다.

   # lsblk

   출력 예

   NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
   sda      8:0    0 446.6G  0 disk
   ├─sda1   8:1    0     1M  0 part
   ├─sda2   8:2    0   127M  0 part
   ├─sda3   8:3    0   384M  0 part /boot
   ├─sda4   8:4    0 243.6G  0 part /var
   │                                /sysroot/ostree/deploy/rhcos/var
   │                                /usr
   │                                /etc
   │                                /
   │                                /sysroot
   └─sda5   8:5    0 202.5G  0 part /var/lib/containers

   # df -h

   출력 예

   Filesystem      Size  Used Avail Use% Mounted on
   devtmpfs        4.0M     0  4.0M   0% /dev
   tmpfs           126G   84K  126G   1% /dev/shm
   tmpfs            51G   93M   51G   1% /run
   /dev/sda4       244G  5.2G  239G   3% /sysroot
   tmpfs           126G  4.0K  126G   1% /tmp
   /dev/sda5       203G  119G   85G  59% /var/lib/containers
   /dev/sda3       350M  110M  218M  34% /boot
   tmpfs            26G     0   26G   0% /run/user/1000