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out-of-tree/distro/centos/centos.go

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package centos
import (
"fmt"
"strings"
"github.com/rs/zerolog/log"
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"code.dumpstack.io/tools/out-of-tree/config/dotfiles"
"code.dumpstack.io/tools/out-of-tree/container"
"code.dumpstack.io/tools/out-of-tree/distro"
)
func init() {
releases := []string{"6", "7", "8"}
for _, release := range releases {
distro.Register(CentOS{release: release})
}
}
type CentOS struct {
release string
}
func (centos CentOS) Equal(d distro.Distro) bool {
return centos.release == d.Release && distro.CentOS == d.ID
}
func (centos CentOS) Distro() distro.Distro {
return distro.Distro{ID: distro.CentOS, Release: centos.release}
}
func (centos CentOS) Packages() (pkgs []string, err error) {
c, err := container.New(centos.Distro())
if err != nil {
return
}
if !c.Exist() {
err = c.Build("centos:"+centos.release,
centos.envs(), centos.runs())
if err != nil {
return
}
}
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cmd := "yum search kernel --showduplicates 2>/dev/null " +
"| grep '^kernel-[0-9]' " +
"| grep -v src " +
"| cut -d ' ' -f 1"
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output, err := c.Run(dotfiles.Dir("tmp"), []string{cmd})
if err != nil {
return
}
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pkgs = append(pkgs, strings.Fields(output)...)
return
}
func (centos CentOS) Kernels() (kernels []distro.KernelInfo, err error) {
c, err := container.New(centos.Distro())
if err != nil {
return
}
return c.Kernels()
}
func (centos CentOS) envs() (envs []string) {
return
}
func (centos CentOS) runs() (commands []string) {
cmdf := func(f string, s ...interface{}) {
commands = append(commands, fmt.Sprintf(f, s...))
}
var repos []string
// TODO refactor
switch centos.release {
case "6":
repofmt := "[6.%d-%s]\\nbaseurl=https://vault.centos.org/6.%d/%s/$basearch/\\ngpgcheck=0"
for i := 0; i <= 10; i++ {
repos = append(repos, fmt.Sprintf(repofmt, i, "os", i, "os"))
repos = append(repos, fmt.Sprintf(repofmt, i, "updates", i, "updates"))
}
cmdf("rm /etc/yum.repos.d/*")
case "7":
repofmt := "[%s-%s]\\nbaseurl=https://vault.centos.org/%s/%s/$basearch/\\ngpgcheck=0"
for _, ver := range []string{
"7.0.1406", "7.1.1503", "7.2.1511",
"7.3.1611", "7.4.1708", "7.5.1804",
"7.6.1810", "7.7.1908", "7.8.2003",
} {
repos = append(repos, fmt.Sprintf(repofmt, ver, "os", ver, "os"))
repos = append(repos, fmt.Sprintf(repofmt, ver, "updates", ver, "updates"))
}
// FIXME http/gpgcheck=0
repofmt = "[%s-%s]\\nbaseurl=http://mirror.centos.org/centos-7/%s/%s/$basearch/\\ngpgcheck=0"
repos = append(repos, fmt.Sprintf(repofmt, "7.9.2009", "os", "7.9.2009", "os"))
repos = append(repos, fmt.Sprintf(repofmt, "7.9.2009", "updates", "7.9.2009", "updates"))
case "8":
repofmt := "[%s-%s]\\nbaseurl=https://vault.centos.org/%s/%s/$basearch/os/\\ngpgcheck=0"
for _, ver := range []string{
"8.0.1905", "8.1.1911", "8.2.2004",
"8.3.2011", "8.4.2105", "8.5.2111",
} {
repos = append(repos, fmt.Sprintf(repofmt, ver, "baseos", ver, "BaseOS"))
repos = append(repos, fmt.Sprintf(repofmt, ver, "appstream", ver, "AppStream"))
}
default:
log.Fatal().Msgf("no support for centos %s", centos.release)
return
}
cmdf("sed -i 's/enabled=1/enabled=0/' /etc/yum.repos.d/* || true")
for _, repo := range repos {
cmdf("echo -e '%s' >> /etc/yum.repos.d/oot.repo\n", repo)
}
// do not remove old kernels
cmdf("sed -i 's;installonly_limit=;installonly_limit=100500;' /etc/yum.conf")
cmdf("yum -y update")
cmdf("yum -y groupinstall 'Development Tools'")
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// TODO do not use lexicographical comparison, change to parse int
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if centos.release <= "6" {
cmdf("yum -y install kernel-firmware")
} else {
cmdf("yum -y install linux-firmware")
}
if centos.release < "8" {
cmdf("yum -y install deltarpm")
} else {
cmdf("yum -y install grub2-tools-minimal elfutils-libelf-devel")
}
var flags string
if centos.release >= "8" {
flags = "--noautoremove"
}
// Install and remove a single kernel and headers.
// This ensures that all dependencies are cached.
cmd := "export HEADERS=$(yum search kernel-devel --showduplicates " +
"| grep '^kernel-devel' | cut -d ' ' -f 1 | head -n 1)"
cmd += " KERNEL=$(echo $HEADERS | sed 's/-devel//')"
cmd += " MODULES=$(echo $HEADERS | sed 's/-devel/-modules/')"
cmd += " CORE=$(echo $HEADERS | sed 's/-devel/-core/')"
cmd += " && yum -y install $KERNEL $HEADERS"
cmd += " && yum -y remove %s $KERNEL $HEADERS $MODULES $CORE"
cmdf(cmd, flags)
return
}
func (centos CentOS) Install(pkgname string, headers bool) (err error) {
var headerspkg string
if headers {
headerspkg = strings.Replace(pkgname, "kernel", "kernel-devel", -1)
}
var commands []string
cmdf := func(f string, s ...interface{}) {
commands = append(commands, fmt.Sprintf(f, s...))
}
cmdf("yum -y install %s %s", pkgname, headerspkg)
version := strings.Replace(pkgname, "kernel-", "", -1)
if centos.release <= "7" {
cmdf("dracut -v --add-drivers 'e1000 ext4' -f "+
"/boot/initramfs-%s.img %s", version, version)
} else {
cmdf("dracut -v --add-drivers 'ata_piix libata' "+
"--force-drivers 'e1000 ext4 sd_mod' -f "+
"/boot/initramfs-%s.img %s", version, version)
}
cmdf("cp -r /boot /target/")
cmdf("cp -r /lib/modules /target/lib/")
cmdf("cp -r /usr/src /target/usr/")
c, err := container.New(centos.Distro())
if err != nil {
return
}
for i := range c.Volumes {
c.Volumes[i].Dest = "/target" + c.Volumes[i].Dest
}
_, err = c.Run("", commands)
if err != nil {
return
}
return
}
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func (centos CentOS) RootFS() string {
return fmt.Sprintf("out_of_tree_centos_%s.img", centos.release)
}