docker 安装、升级、修改数据目次的操作方法

2024-11-3 13:51| 发布者: f5db4| 查看: 102| 评论: 0

摘要: 目次1、查察体系要求2、删除旧版本3、安装必要的软件包4、设置Docker yum源5、查察全部堆栈中全部docker版本6、安装docker7、启动8、修改数据目次方式一方式二9、停止docker服务10、修改docker服务启动文件11、复制

1、查察体系要求

Docker 要求 CentOS 体系的内核版本高于 3.10 ,查察CentOS的内核版本。

[code]uname -a[/code]

2、删除旧版本

[code]yum remove docker docker-common docker-selinux docker-engine[/code]

3、安装必要的软件包

yum-util 提供yum-config-manager功能，别的两个是devicemapper驱动依赖的

[code]sudo yum install -y yum-utils device-mapper-persistent-data lvm2[/code]

4、设置Docker yum源

[code]# 使用官方源 sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo # 使用阿里源 sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo[/code]

5、查察全部堆栈中全部docker版本

可以查察全部堆栈中全部docker版本,并选择特定的版本安装。

[code]yum list docker-ce --showduplicates | sort -r[/code]

6、安装docker

sh

[code]sudo yum install docker-ce[/code]

由于repo中默认只开启stable堆栈，故这里安装的是最新稳18.03.0.ce-1.el7.centos。

如果要安装特定版本：

[code]sudo yum install docker-ce-18.06.1.ce[/code]

7、启动

设置为开机启动

[code]systemctl enable docker[/code]

启动

[code]systemctl start docker[/code]

查察启动状态

[code]systemctl status docker[/code]

如果出现非常

[code]$ systemctl start docker A dependency job for docker.service failed. See 'journalctl -xe' for details.[/code]

查察报错信息

[code]Mar 03 11:19:47 master1 systemd[1]: Starting containerd container runtime... -- Subject: Unit containerd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit containerd.service has begun starting up. Mar 03 11:19:47 master1 systemd[104332]: Failed at step LIMITS spawning /sbin/modprobe: Operation not permitted -- Subject: Process /sbin/modprobe could not be executed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- The process /sbin/modprobe could not be executed and failed. -- -- The error number returned by this process is 1. Mar 03 11:19:47 master1 systemd[104335]: Failed at step LIMITS spawning /usr/bin/containerd: Operation not permitted -- Subject: Process /usr/bin/containerd could not be executed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- The process /usr/bin/containerd could not be executed and failed.[/code]

办理方案：
查察open files的值，修改/usr/lib/systemd/system/docker.service和/usr/lib/systemd/system/containerd.service（如下图），启动即可

[code]$ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 23056 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 654350 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 23056 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited[/code] [code]$ vim /usr/lib/systemd/system/docker.service ... # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNOFILE=654349 # 留意这里 LimitNPROC=23057 LimitCORE=infinity # Comment TasksMax if your systemd version does not supports it. ...[/code] [code]$ vim /usr/lib/systemd/system/containerd.service ... # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNOFILE=654349 # 留意这里 LimitNPROC=23057 LimitCORE=infinity # Comment TasksMax if your systemd version does not support it. ...[/code]

查察版本

[code]docker version[/code]

8、修改数据目次

方式一

[code]# 将下面的json拷贝纸docker启动目次 $ vim /etc/docker/daemon.json { "data-root": "/data/docker" }[/code]

方式二

查察docker当前信息

[code]$ docker info Client: Context: default Debug Mode: false Plugins: app: Docker App (Docker Inc., v0.9.1-beta3) buildx: Docker Buildx (Docker Inc., v0.8.2-docker) scan: Docker Scan (Docker Inc., v0.17.0) Server: Containers: 40 Running: 15 Paused: 0 Stopped: 25 Images: 91 Server Version: 20.10.17 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true userxattr: false Logging Driver: json-file Cgroup Driver: systemd Cgroup Version: 1 Plugins: Volume: local Network: bridge host ipvlan macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc Default Runtime: runc Init Binary: docker-init containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1 runc version: v1.1.2-0-ga916309f init version: de40ad0 Security Options: seccomp Profile: default Kernel Version: 3.10.0-1160.71.1.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 CPUs: 16 Total Memory: 15.5GiB Name: master1 ID: 3WQC:QCTB:I5D4:2ZWL:VBSH:6GWQ:4W2G:BTK2:XSEY:PDXG:BQAI:ZB6D Docker Root Dir: /data/docker # 这里是数据目次的位置，我由于已经更改过，原位置为/var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Registry Mirrors: https://x6u7jv2l.mirror.aliyuncs.com/ Live Restore Enabled: false[/code]

9、停止docker服务

[code]$ systemctl stop docker[/code]

10、修改docker服务启动文件

[code]vi /usr/lib/systemd/system/docker.service ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --graph=/data/docker[/code]

11、复制原有数据，若无数据，可跳过此步骤

[code]$ cp -rf /var/lib/docker/* /data/docker/[/code]

12、重新加载设置文件并启动

[code]$ systemctl daemon-reload $ systemctl start docker[/code]

最后执行步骤8，查察是否已启动

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