docker-engine 套件實例

1. docker-engine 支援 CentOS 6 的版本只到 1.7.1，oraclelinux 提供 docker-engine 更高的版本，但安裝時相依套件 kernel-uek >= 4.1，如果核心版本大於 4.1，不用安裝 kernel-uek 也應該要可以安裝，所以下載 SRPM 套件，重新 build RPM 檔。

   [dywang@dyw219 ~]$ cd rpmbuild/
   [dywang@dyw219 rpmbuild]$ wget https://yum.dockerproject.org/repo/main/oraclelinux/6/Packages/docker-engine-17.05.0.ce-1.el6.src.rpm
   

2. 安裝 SRPM 套件

   [dywang@dyw219 rpmbuild]$ rpm -ivh docker-engine-17.05.0.ce-1.el6.src.rpm 
      1:docker-engine         ########################################### [100%]
   

3. 解打包壓縮

   [dywang@dyw219 rpmbuild]$ cd SOURCES/
   [dywang@dyw219 SOURCES]$ tar zxvf docker-engine.tar.gz
   

4. 版本名稱 17.05.0-ce，但版本名稱不允許減號 '-'，實際名稱為 17.05.0.ce。

   [dywang@dyw219 SOURCES]$ diff -uN ../tmp/docker-engine/VERSION docker-engine/VERSION 
   --- ../tmp/docker-engine/VERSION	2017-05-05 05:36:17.000000000 +0800
   +++ docker-engine/VERSION	2019-08-19 10:56:26.627394532 +0800
   @@ -1 +1 @@
   -17.05.0-ce
   +17.05.0.ce
   

5. 重新打包壓縮 docker-engine.tar.gz。

   [dywang@dyw219 SOURCES]$ tar zcvf docker-engine.tar.gz containerd docker-engine proxy runc tini
   

6. 修改 docker-engin.spec 檔，由於版本變數無法取得版本，所以直接在 spec 檔開頭定義，Release 加 dyw，核心要求用 or 增加 kernel 及 kernel-ml，docker 實際安裝的執行檔在 /usr/bin，所以　/usr/local/bin 必須改成 /usr/bin。

   [dywang@dyw219 SOURCES]$ diff -uN ../tmp/docker-engine.spec ../SPECS/docker-engine.spec 
   --- ../tmp/docker-engine.spec	2017-05-05 06:09:41.000000000 +0800
   +++ ../SPECS/docker-engine.spec	2019-08-19 12:01:32.234691761 +0800
   @@ -1,6 +1,10 @@
   +%define _version 17.05.0.ce
   +%define _origversion 17.05.0.ce
   +%define _release 1
   +
    Name: docker-engine
    Version: %{_version}
   -Release: %{_release}%{?dist}
   +Release: %{_release}%{?dist}.dyw
    Summary: The open-source application container engine
    Group: Tools/Docker
    
   @@ -57,7 +61,7 @@
    %endif
    %if 0%{?oraclelinux} >= 6
    # Require Oracle Unbreakable Enterprise Kernel R4 and newer device-mapper
   -Requires: kernel-uek >= 4.1
   +Requires: (kernel >=4.1 or kernel-uek >= 4.1 or kernel-ml >= 4.1)
    Requires: device-mapper >= 1.02.90-2
    %endif
    
   @@ -137,18 +141,18 @@
    install -p -m 755 bundles/%{_origversion}/dynbinary-daemon/dockerd-%{_origversion} $RPM_BUILD_ROOT/%{_bindir}/dockerd
    
    # install proxy
   -install -p -m 755 /usr/local/bin/docker-proxy $RPM_BUILD_ROOT/%{_bindir}/docker-proxy
   +install -p -m 755 /usr/bin/docker-proxy $RPM_BUILD_ROOT/%{_bindir}/docker-proxy
    
    # install containerd
   -install -p -m 755 /usr/local/bin/docker-containerd $RPM_BUILD_ROOT/%{_bindir}/docker-containerd
   -install -p -m 755 /usr/local/bin/docker-containerd-shim $RPM_BUILD_ROOT/%{_bindir}/docker-containerd-shim
   -install -p -m 755 /usr/local/bin/docker-containerd-ctr $RPM_BUILD_ROOT/%{_bindir}/docker-containerd-ctr
   +install -p -m 755 /usr/bin/docker-containerd $RPM_BUILD_ROOT/%{_bindir}/docker-containerd
   +install -p -m 755 /usr/bin/docker-containerd-shim $RPM_BUILD_ROOT/%{_bindir}/docker-containerd-shim
   +install -p -m 755 /usr/bin/docker-containerd-ctr $RPM_BUILD_ROOT/%{_bindir}/docker-containerd-ctr
    
    # install runc
   -install -p -m 755 /usr/local/bin/docker-runc $RPM_BUILD_ROOT/%{_bindir}/docker-runc
   +install -p -m 755 /usr/bin/docker-runc $RPM_BUILD_ROOT/%{_bindir}/docker-runc
    
    # install tini
   -install -p -m 755 /usr/local/bin/docker-init $RPM_BUILD_ROOT/%{_bindir}/docker-init
   +install -p -m 755 /usr/bin/docker-init $RPM_BUILD_ROOT/%{_bindir}/docker-init
    
    # install udev rules
    install -d $RPM_BUILD_ROOT/%{_sysconfdir}/udev/rules.d
   

7. 安裝 build docker-engine RPM 需要的套件

   [dywang@dyw219 SOURCES]$ sudo yum install go btrfs-progs \
   btrfs-progs-devel device-mapper-devel
   

8. 重建 docker-engine RPM 及 SRPM 二進位檔，GOPATH 變數不存在，設定 AUTO_GOPATH=1。

   [dywang@dyw219 SOURCES]$ AUTO_GOPATH=1 rpmbuild -ba --clean \
   --target=$(uname -m) ../SPECS/docker-engine.spec