docker数据迁移
docker数据迁移
案例
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0 17:10:28 192.168.10.233:/mnt/mydata/kk $ df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 16G 0 16G 0% /dev
tmpfs 16G 12K 16G 1% /dev/shm
tmpfs 16G 1.6G 15G 10% /run
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/vda1 80G 80G 245M 100% /
/dev/mapper/myvg-mylv 985G 21G 914G 3% /mnt/mydata
tmpfs 3.2G 0 3.2G 0% /run/user/0
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/6bd1463aa64ed957baa913c70a0e250fa424ef99e10c6c00a9e0185ec414b501/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/4b60780f9adffdc349e9860e3226ba32e9639df040e1906dbad9b4762e8a5d7d/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/7b702c565deb0b517fff7e30945e1e775a08a7c67754bb78a074639fa0ba2a80/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/c0ebf34c9953d2a918469e33e70953348e81db99d253d85e429a5d269a86054a/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/108d488a8b57577df3d9d25ec3dd5c56c960f700019574ece27ec354ed836506/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/88997e086990f8f4add08077b108ac69e88f705e2a88a2161ef0d2a4562c1f16/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/efd91ab7c2c8f8c0381541ee807fee8de23645e4aca9087765bdb2d0a3778317/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/3e46cda2077f25a82fb174a64ef949142c649aca8169d82786632249a2dea196/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/88761124b50dca4ec9e169b438a5ce3c28a023aabfa487d8aa5595c23fbd9f4a/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/121916c52252654e00f16d93507944ed028579b654fdc57834f7cb9347155977/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/984d917c01a9838980084a1031244b91a4e1a6dbe3acca06f6a5127462064bb4/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/c14a7de37c4370533e846d5bce5d04c760ac72c64c4ba69dbd61470adc7b7952/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/b60153e3c8785e9e36e35d7074c9fb2fd8170fa0b7b18a43f05bbf1b8a277054/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/a788a1f62e990963883ee0eac23e6a5f74626df17e8bf7bad97f376523f8225e/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/c7c0865b8eee4787f872f6eaf21e70cc15d03afcb2eeb586eed7da9992a3c3b5/merged
overlay 80G 80G 245M 100% /var/lib/docker/overlay2/1ac5a2ac719ece89af2df87bcd98e3ea9b0ef490024015be574da2c81eeb7230/merged
原来的环境
验证数据迁移
从你给出的信息中，我们可以看到 /dev/vda1 的 80G 容量已经使用了100%，而磁盘 /dev/mapper/myvg-mylv 还有大量的可用空间。下面是将磁盘空间增加到 /var/lib/docker 的一种可能的方式。
首先，如果你有一些可以删除的文件或者旧的docker镜像和容器，那么删除它们可以获得一些空间。
其次，你应该在大量的可用磁盘 /dev/mapper/myvg-mylv 上创建一个新的目录，例如/mnt/mydata/docker。
然后，你可以停止正在运行的Docker守护进程：
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systemctl stop docker
接着，将原来的 /var/lib/docker 目录下的内容移动到新的目录：
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mv /var/lib/docker/ /mnt/mydata/docker
然后，建立符号链接，使得 /var/lib/docker 点向新的位置：
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ln -s /mnt/mydata/docker /var/lib/docker
最后，你可以重新启动 Docker 守护进程查看效果：
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systemctl start docker
如果一切顺利，你应该会在 /var/lib/docker 上获得更多的可用空间，而不影响现有的功能。你可以使用 df -h 命令确认 Docker 是否已经开始使用新的磁盘空间。
这种方法非常直接，但是要注意，它实际上并没有真正地增加你的 / 分区的空间，而只是为Docker提供了更多的存储空间。如果在 / 分区上的其他目录需要更多的空间，你可能需要寻找其他的方法来解决你的问题。
harbor的镜像会重新创建, harbor中原来的镜像不受影响
迁移后的效果
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0 18:02:48 192.168.10.233:/opt/harbor $ df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 16G 0 16G 0% /dev
tmpfs 16G 12K 16G 1% /dev/shm
tmpfs 16G 1.6G 15G 11% /run
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/vda1 80G 32G 49G 40% /
/dev/mapper/myvg-mylv 985G 72G 863G 8% /mnt/mydata
tmpfs 3.2G 0 3.2G 0% /run/user/0
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/2711e098d0eb952d8bc34bac1f75fcd3c7ad90272348bb1d7c27f4d318ef3f2d/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/3d4bde88ed210bc796f51bffe199d67f50fed420902aa6428ec48bd789010de8/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/969517abb7e183b58198257cc47c378fd2c441b700cda7d9c14690c5fad61a50/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/3579a8617effa21fbd25e2c682863a757e1cd0efecad5bdd60e14a314c2fc80f/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/734bedc474561df0f031e6020ba7850ed5bdb8bb62a69f2b3c61a03f32dbcb7b/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/82018b7c7276bbf24d24d4a33adc90d9a92c2fcae29bc9a85036f191dfe0c473/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/8e660266865424cd6c68b17c77e828965dd530714d39718c6dcb1474a8d6ec65/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/63078ae5512936f8b1754d8a42635d9972655eb95536bfe4e0559d780c283f1e/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/20aafe257ba68ce5c37f293b50260b535780dd0cf9bbe6526cec50241dda1c2b/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/0e715ceb1033d70b698327594b6b217ce88e71101ad84039379a17153ef44e3f/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/818648a257eb079c364b16e8682f2edd05cbf9d2cf05b0eb7a8a78995a1c106d/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/cdfb7db7d1b62872a7f7cce0c3ceec81096c46b941c9800661d883b98d086455/merged
overlay 80G 32G 49G 40% /var/lib/docker/overlay2/96a7c82724ddc170ffa72c265a221705bc23fa240d4365ab011a34e10ddf3015/merged
完整流程
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[root@harbor harbor]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 3.1M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 100G 14G 87G 14% /
/dev/mapper/centos-home 47G 39M 47G 1% /home
/dev/sdb1 296G 65M 281G 1% /data
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 1.6G 12K 1.6G 1% /run/user/42
tmpfs 1.6G 0 1.6G 0% /run/user/0
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/3802ff8254fdfa35477424da06eb85e84429d3e0e769052e8d45d25477206ac1/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/d1203f90fc57b1d2c3164254bb41f35f9ba51ae219308da28107c390c978d20f/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/08bc06ec646dfacc0fe4535a47477a191da99f7bce9390584c20ca0b4fda3699/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/63c4690c7558a3a6d7de62efeaac3eb247fd547ff6b51231da690420c932c5a2/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/06b026d3f714e78ba2f00e5d7e883422cffce0158f95ae5e196558ca26512664/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/d39343418aab34bd5a0cae9727bd330bdf42f637e842326ae04c4de5f71717f5/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/74577390e5a77722184ff44357ba7265d0a5393e26d88d0f2fbc130b80ad1e3c/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/8d55c432fec1dce19985559ec44286162b5728faef20645adbeb55c8dc163711/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/dff3b4bdc5b2a50658aa35d7672f63f65cdf51046e0ffd36ad47bdf7ef149b38/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/984aa26285d22ac4a9e8181cb6ed868bd2490480cf37d216892f807806d785dd/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/f20957d3d60fb19d986c92ac4b9603b5ec95f07a2070a591af05a5862ee18a50/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/42465375f0e86bce6f84d51661123dadc1910defcc1cc5100f6e52923c7b21cc/merged
overlay 100G 14G 87G 14% /var/lib/docker/overlay2/1f0defb4ce3380b1d6c1c6df4d7a9905a1084d2c49b9dc691e4ec78ea97ef275/merged
[root@harbor harbor]# systemctl stop docker
[root@harbor harbor]#
[root@harbor harbor]# mv /var/lib/docker/ /data
[root@harbor harbor]#
[root@harbor harbor]#
[root@harbor harbor]# ls -lt /var/lib/
total 12
drwx------. 2 root root 29 Jun 7 11:11 rsyslog
lrwxrwxrwx 1 root root 13 Jun 7 11:11 docker -> /data/docker/
drwx------. 2 root root 4096 Jun 7 11:09 NetworkManager
drwx--x--x 3 root root 43 Jun 7 10:01 containerd
drwxr-x---. 2 root slocate 24 Jun 7 03:45 mlocate
drwxr-xr-x. 2 root root 30 Jun 7 03:45 logrotate
drwxr-xr-x. 2 unbound unbound 22 Jun 7 00:00 unbound
drwxr-xr-x. 2 root root 29 Nov 9 2023 xkb
drwxrwx--T. 7 gdm gdm 97 Nov 9 2023 gdm
drwxr-xr-x. 4 root root 63 Nov 9 2023 net-snmp
drwxr-xr-x. 2 root root 4096 Nov 9 2023 rpm
drwxr-xr-x. 4 root root 55 Nov 9 2023 gssproxy
drwxr-xr-x 4 root root 35 Aug 16 2023 cni
drwx------ 8 root root 208 Aug 16 2023 kubelet
drwxr-xr-x. 6 root root 80 Aug 16 2023 yum
drwxr-xr-x 2 kube root 33 Sep 28 2022 calico
drwxr-xr-x. 5 root root 105 Sep 22 2022 nfs
drwxr-xr-x. 2 chrony chrony 19 Sep 22 2022 chrony
drwxr-xr-x. 2 root root 52 Sep 22 2022 PackageKit
drwxr-xr-x 2 haproxy haproxy 6 Jun 10 2021 haproxy
drwxr-xr-x. 3 root root 39 Mar 16 2021 fwupd
drwxr-xr-x. 3 root root 19 Mar 15 2021 rpm-state
drwxr-xr-x. 2 root root 4096 Mar 15 2021 alternatives
drwxr-xr-x. 9 root root 106 Mar 15 2021 libvirt
drwxr-xr-x. 3 root root 34 Feb 5 2021 flatpak
drwxr-xr-x. 5 root root 70 Feb 3 2021 systemd
drwxr-xr-x. 10 root root 120 Feb 3 2021 sss
drwxr-xr-x. 2 root root 6 Feb 3 2021 tuned
drwxr-xr-x. 2 root root 6 Jan 22 2021 dnsmasq
drwxr-xr-x. 4 root root 53 Dec 16 2020 samba
drwx------. 2 pulse pulse 6 Dec 16 2020 pulse
drwxr-xr-x. 8 root root 90 Dec 16 2020 iscsi
drwxr-xr-x. 4 root root 35 Nov 17 2020 stateless
drwxr-xr-x. 4 root root 35 Oct 5 2020 ipa-client
drwxr-xr-x. 2 root root 27 Oct 2 2020 plymouth
drwxr-xr-x. 2 root root 6 Oct 2 2020 dhclient
drwxr-xr-x. 2 root root 6 Sep 30 2020 initramfs
drwxr-xr-x. 2 root root 24 Sep 30 2020 dbus
drwxr-xr-x. 5 root root 46 Sep 30 2020 certmonger
drwxr-xr-x. 2 root root 6 Sep 30 2020 bluetooth
drwxr-xr-x. 2 root root 6 Jul 29 2020 fwupdate
drwxr-xr-x. 2 ntp ntp 6 Jun 23 2020 ntp
drwx------. 2 root root 6 Apr 1 2020 udisks2
drwx------. 2 setroubleshoot setroubleshoot 71 Apr 1 2020 setroubleshoot
drwx------. 2 postfix root 25 Apr 1 2020 postfix
drwxr-xr-x. 2 root root 6 Apr 1 2020 selinux
drwxr-xr-x. 4 colord colord 67 Apr 1 2020 colord
drwxr-xr-x. 4 root root 32 Apr 1 2020 AccountsService
drwxr-xr-x. 2 root root 6 Aug 9 2019 lldpad
drwxr-xr-x. 2 root root 6 Aug 9 2019 alsa
drwxr-xr-x. 2 root root 6 Aug 9 2019 boltd
drwxr-xr-x. 2 root root 37 Nov 12 2018 misc
drwxr-xr-x. 3 root root 20 Nov 12 2018 vmware
drwx------. 3 root root 18 Nov 12 2018 authconfig
drwxr-x---. 3 root polkitd 28 Nov 12 2018 polkit-1
drwx------. 2 root root 6 Nov 12 2018 machines
drwxr-xr-x. 3 root root 17 Nov 12 2018 color
drwxr-xr-x. 2 root root 6 Oct 31 2018 fprint
drwx------. 2 rpc rpc 6 Oct 31 2018 rpcbind
drwxr-xr-x. 2 root root 6 Oct 31 2018 hyperv
drwxr-xr-x. 2 root root 6 Oct 31 2018 upower
drwxr-xr-x. 2 geoclue geoclue 6 Oct 31 2018 geoclue
drwxr-xr-x. 2 root root 6 Apr 11 2018 games
drwx------. 2 tss tss 6 Aug 4 2017 tpm
drwxr-xr-x. 2 root root 6 Nov 6 2016 os-prober
[root@harbor harbor]#
[root@harbor harbor]# systemctl start docker
[root@harbor harbor]#
[root@harbor harbor]# cd /opt/harbor
[root@harbor harbor]# docker-compose up -d
[root@harbor harbor]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4a5bfa81b45c goharbor/harbor-jobservice:v2.5.3 "/harbor/entrypoint.…" 36 seconds ago Up 30 seconds (healthy) harbor-jobservice
84e56c73d4f3 goharbor/nginx-photon:v2.5.3 "nginx -g 'daemon of…" 36 seconds ago Up 30 seconds (healthy) 0.0.0.0:4443->4443/tcp, :::4443->4443/tcp, 0.0.0.0:80->8080/tcp, :::80->8080/tcp, 0.0.0.0:443->8443/tcp, :::443->8443/tcp nginx
428c9c084a5e goharbor/notary-server-photon:v2.5.3 "/bin/sh -c 'migrate…" 36 seconds ago Up 30 seconds notary-server
bd109ef2b39d goharbor/trivy-adapter-photon:v2.5.3 "/home/scanner/entry…" 36 seconds ago Up 32 seconds (healthy) trivy-adapter
c6c85300ef0c goharbor/harbor-core:v2.5.3 "/harbor/entrypoint.…" 36 seconds ago Up 31 seconds (healthy) harbor-core
cf853691efe7 goharbor/notary-signer-photon:v2.5.3 "/bin/sh -c 'migrate…" 36 seconds ago Up 31 seconds notary-signer
44890b72a4b1 goharbor/harbor-db:v2.5.3 "/docker-entrypoint.…" 56 seconds ago Up 33 seconds (healthy) harbor-db
8868cac0ecdb goharbor/chartmuseum-photon:v2.5.3 "./docker-entrypoint…" 56 seconds ago Up 33 seconds (healthy) chartmuseum
635cdbac8857 goharbor/redis-photon:v2.5.3 "redis-server /etc/r…" 56 seconds ago Up 33 seconds (healthy) redis
79a641229798 goharbor/harbor-portal:v2.5.3 "nginx -g 'daemon of…" 56 seconds ago Up 33 seconds (healthy) harbor-portal
3ea1ce798228 goharbor/registry-photon:v2.5.3 "/home/harbor/entryp…" 56 seconds ago Up 33 seconds (healthy) registry
2d063a15136b goharbor/harbor-registryctl:v2.5.3 "/home/harbor/start.…" 56 seconds ago Up 33 seconds (healthy) registryctl
38649bae22f6 goharbor/harbor-log:v2.5.3 "/bin/sh -c /usr/loc…" 56 seconds ago Up 35 seconds (healthy) 127.0.0.1:1514->10514/tcp harbor-log
[root@harbor harbor]#
最终的效果,
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[root@harbor harbor]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 3.1M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 100G 12G 89G 12% /
/dev/mapper/centos-home 47G 39M 47G 1% /home
/dev/sdb1 296G 1.8G 279G 1% /data
/dev/sda1 1014M 180M 835M 18% /boot
tmpfs 1.6G 12K 1.6G 1% /run/user/42
tmpfs 1.6G 0 1.6G 0% /run/user/0
overlay 296G 1.8G 279G 1% /data/docker/overlay2/1c5bc9f64b7e787dd55b5078d1b4d04fa3a0a3cd972170316858e2e009e66c70/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/c0cf89b59b8e9a75e891ce8ef19984a2bc2e94d27a178064bb677dc6b8d6a87f/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/b94652b7ac753a378b24ff17a2224c35eaff0afc9033266857b35df7112dbde7/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/838ccae83474c7c2beb590c830f0d60967a77c46bd2c2485ef703c751220abce/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/0b9900414fe8f919e0c1d072edfeab983799054f3792dcc13d321ae19c742472/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/80168eae76ded9c53f4b4fb4ac90938d91667af0bc24091ab63f4e5c767ac2e3/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/475928e78d693f8dfcac1b69814cd495bf74d418161d5c692be456e63b1287ed/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/c7207ae10de6ad860607af706b4cbfa16bc7552f595f98f157ac4352c2821316/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/5008d4cc4aece20c24ae78ceff089957c377d3b323ca31a97268e6d1406aabe8/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/65b60521418f7a97e47a12599720683e5e7579dd7e9146f85368fa20c2434700/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/8ffbb85a07c031e2df5c22017e58523986a03a861f2a4fbbda111b2abcadf5d3/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/0f73f670f80c4231955ba40e48db62087f16f5244fa2067adf0403583fda5afa/merged
overlay 296G 1.8G 279G 1% /data/docker/overlay2/92ea5fbaaa9b2c3a895805e287980bf58172c85d7f11d3dc6e22fa1d15ab6ccf/merged
[root@harbor harbor]#
overlay绑定到了/data/下容量大的磁盘上
This post is licensed under CC BY 4.0 by the author.