LVS-Fullnat之编译内核 将fullnat模块添加到内核

Posted 2020-08-16

主机环境   redhat6.5 64位

实验环境   ip 172.25.29.6

安装包     asciidoc-8.4.5-4.1.el6.noarch.rpm   

           Lvs-fullnat-synproxy.tar.gz

           kernel-2.6.32-220.23.1.el6.src.rpm  

           newt-devel-0.52.11-3.el6.x86_64.rpm              

           slang-devel-2.2.1-1.el6.x86_64.rpm

防火墙状态：关闭

 

重新编译内核之前，要保证根分区要有20G的内存。

如果没有足够的空间就添加一块20G的虚拟磁盘

1．给根分区分用lvm分20G的空间（如果有足够的空间，就不用做拉伸了）

[[email protected] ~]# fdisk -l                      #查看分区

Disk /dev/vdc: 21.5 GB, 21474836480 bytes       #新添加的磁盘

16 heads, 63 sectors/track, 41610 cylinders

Units = cylinders of 1008 * 512 = 516096 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

[[email protected] ~]# pvcreate /dev/vdc              #用pv分成物理块

  Physical volume"/dev/vdc" successfully created

[[email protected] ~]# pvs                            #查看，pv成功

  PV         VG       Fmt Attr PSize  PFree

  /dev/vda2  VolGroup lvm2 a--   8.51g    0

  /dev/vdc            lvm2 a--  20.00g 20.00g

[[email protected] ~]# vgs                            #查看

  VG       #PV #LV #SN Attr   VSize VFree

  VolGroup   1  2   0 wz--n- 8.51g    0

[[email protected] ~]# vgextend VolGroup /dev/vdc      #扩展VolGroup组

  Volume group"VolGroup" successfully extended

[[email protected] ~]# vgs                             #查看

  VG       #PV #LV #SN Attr   VSize VFree

  VolGroup   2  2   0 wz--n- 28.50g 20.00g

[[email protected] ~]# lvextend -L 20G /dev/VolGroup/lv_root  #扩展lv

  Extending logicalvolume lv_root to 20.00 GiB

  Logical volume lv_rootsuccessfully resized      

[[email protected] ~]# df -lh                           #查看，根分区7.5G

Filesystem                   Size  Used Avail Use% Mounted on

/dev/mapper/VolGroup-lv_root 7.5G  1.5G  5.7G 21% /

tmpfs                        499M     0  499M  0% /dev/shm

/dev/vda1                    485M   55M  405M 12% /boot

[[email protected] ~]# resize2fs /dev/VolGroup/lv_root   #扩展文件系统

resize2fs 1.41.12 (17-May-2010)

Filesystem at /dev/VolGroup/lv_root is mounted on /; on-lineresizing required

old desc_blocks = 1, new_desc_blocks = 2

Performing an on-line resize of /dev/VolGroup/lv_root to5242880 (4k) blocks.

The filesystem on /dev/VolGroup/lv_root is now 5242880 blockslong.

[[email protected] ~]# df -lh                            #查看，根分区20G

Filesystem                   Size  Used Avail Use% Mounted on

/dev/mapper/VolGroup-lv_root  20G  1.5G   18G  8% /

tmpfs                        499M     0  499M  0% /dev/shm

/dev/vda1                    485M   55M  405M 12% /boot

 

2. 重新编译内核，将fallnat模块添加到在内核及测试

 A）重新编译内核

[[email protected] mnt]# ls

asciidoc-8.4.5-4.1.el6.noarch.rpm   Lvs-fullnat-synproxy.tar.gz

kernel-2.6.32-220.23.1.el6.src.rpm  newt-devel-0.52.11-3.el6.x86_64.rpm

lvs-fullnat-synproxy               slang-devel-2.2.1-1.el6.x86_64.rpm

[[email protected] mnt]# rpm -vih kernel-2.6.32-220.23.1.el6.src.rpm    #安装内核包

[[email protected] mnt]# yum install rpm-build -y             #安装rpmbuild

[[email protected] mnt]# cd ~/rpmbuild/

[[email protected] rpmbuild]# ls

BUILD  BUILDROOT  RPMS SOURCES  SPECS  SRPMS

[[email protected] rpmbuild]# cd SPECS/

[[email protected] SPECS]# ls

kernel.spec

[[email protected] SPECS]# rpmbuild -bp kernel.spec          #生成内核源码

error: Failed build dependencies:

    redhat-rpm-config isneeded by kernel-2.6.32-220.23.1.el6.x86_64

    patchutils is neededby kernel-2.6.32-220.23.1.el6.x86_64

    xmlto is needed bykernel-2.6.32-220.23.1.el6.x86_64

    asciidoc is needed bykernel-2.6.32-220.23.1.el6.x86_64

    elfutils-libelf-develis needed by kernel-2.6.32-220.23.1.el6.x86_64

    binutils-devel isneeded by kernel-2.6.32-220.23.1.el6.x86_64

    newt-devel is neededby kernel-2.6.32-220.23.1.el6.x86_64

    python-devel is neededby kernel-2.6.32-220.23.1.el6.x86_64

    perl(ExtUtils::Embed)is needed by kernel-2.6.32-220.23.1.el6.x86_64

    hmaccalc is needed bykernel-2.6.32-220.23.1.el6.x86_64

[[email protected] SPECS]# yum install redhat-rpm-config patchutilsxmlto elfutils-libelf-devel binutils-devel python-devel hmaccalcperl-ExtUtils-Embed -y     #安装所缺少的包

[[email protected] SPECS]# cd /mnt/

[[email protected] mnt]# rpm -vihnewt-devel-0.52.11-3.el6.x86_64.rpm                                                                                  #安装编译内核时所需要的包

slang-devel-2.2.1-1.el6.x86_64.rpmasciidoc-8.4.5-4.1.el6.noarch.rpm

warning: newt-devel-0.52.11-3.el6.x86_64.rpm: Header V3 RSA/SHA1Signature, key ID c105b9de: NOKEY

Preparing...               ########################################### [100%]

   1:slang-devel           ########################################### [ 33%]

   2:newt-devel             ###########################################[ 67%]

   3:asciidoc              ########################################### [100%]

[[email protected] mnt]#cd -

[[email protected] SPECS]# rpmbuild -bp kernel.spec

如果出现这种情况

则需：

[[email protected] ~]# yum provides */rngd      #上面的图片提示，输入rngd -r /dev/urandom,查找命令所在的安装包

Loaded plugins: product-id, subscription-manager

This system is not registered to Red Hat SubscriptionManagement. You can use subscription-manager to register.

rng-tools-2-13.el6_2.x86_64 : Random number generator relatedutilities

Repo        : rhel6.5

Matched from:

Filename    :/etc/sysconfig/rngd

Filename    : /sbin/rngd

Filename    :/etc/rc.d/init.d/rngd

[[email protected] ~]# yum install rng-tools-2-13.el6_2.x86_64 -y     #安装

[[email protected] ~]# rngd -r /dev/urandom                           #输入命令

#查看，运行通过

[[email protected] SPECS]# cd /mnt/

[[email protected] mnt]# ls

asciidoc-8.4.5-4.1.el6.noarch.rpm   newt-devel-0.52.11-3.el6.x86_64.rpm

kernel-2.6.32-220.23.1.el6.src.rpm  slang-devel-2.2.1-1.el6.x86_64.rpm

Lvs-fullnat-synproxy.tar.gz

[[email protected] mnt]# tar zxf Lvs-fullnat-synproxy.tar.gz      #解压

[[email protected] mnt]# ls

asciidoc-8.4.5-4.1.el6.noarch.rpm   Lvs-fullnat-synproxy.tar.gz

kernel-2.6.32-220.23.1.el6.src.rpm  newt-devel-0.52.11-3.el6.x86_64.rpm

lvs-fullnat-synproxy               slang-devel-2.2.1-1.el6.x86_64.rpm

[[email protected] mnt]# cd lvs-fullnat-synproxy/                 #进入解压之后的包

[[email protected] lvs-fullnat-synproxy]# ls                      #查看

lvs-2.6.32-220.23.1.el6.patch README

lvs-tools.tar.gz              toa-2.6.32-220.23.1.el6.patch

[[email protected] lvs-fullnat-synproxy]# cd~/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/linux-2.6.32-220.23.1.el6.x86_64/

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# cp/mnt/lvs-fullnat-synproxy/lvs-2.6.32-220.23.1.el6.patch .                                  #将刚查看的包移动到当前

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# patch-p1<lvs-2.6.32-220.23.1.el6.patch                                           #打lvs的补丁

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# vimMakefile #进入，添加版本号，作为区别

   4 EXTRAVERSION =-220.23.1.el6

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# make   

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# makemodules_install   #安装内核模块

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# makeinstall  #安装

#在kernel一行中，添加“nohz=off ”（如果不关闭nohz，大压力下CPU0可能会消耗过高，压力不均匀）

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# vim/boot/grub/grub.conf  #进入引导文件

 10 default=0

16         kernel /vmlinuz-2.6.32-220.23.1.el6 roroot=/dev/mapper/VolGroup-lv_    rootnomodeset rd_NO_LUKS.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_sw    ap SYSFONT=latarcyrheb-sun16crashkernel=auto rd_LVM_LV=VolGroup/lv_root KE    YBOARDTYPE=pc KEYTABLE=usrd_NO_DM nohz=off rhgb quiet     

[[email protected] linux-2.6.32-220.23.1.el6.x86_64]# reboot      #重启

[[email protected] ~]# uname -r                                   #查看版本号，编译成功

2.6.32-220.23.1.el6

 B)安装keepalived和ipvsadm

[[email protected] ~]# ipvsadm -l                               #查看

IP Virtual Server version 1.2.1 (size=4194304)

Prot LocalAddress:Port Scheduler Flags

  ->RemoteAddress:Port           ForwardWeight ActiveConn InActConn

[[email protected] ipvsadm]# ipvsadm --help | grep fullnat     #查看，fullnat模块并没有

[[email protected] ~]# yum remove ipvsadm -y                   #卸载，重新安装

[[email protected] ~]# cd /mnt/

[[email protected] mnt]# ls

asciidoc-8.4.5-4.1.el6.noarch.rpm   Lvs-fullnat-synproxy.tar.gz

newt-devel-0.52.11-3.el6.x86_64.rpm  lvs-fullnat-synproxy

kernel-2.6.32-220.23.1.el6.src.rpm  slang-devel-2.2.1-1.el6.x86_64.rpm

[[email protected] mnt]# cd lvs-fullnat-synproxy/

[[email protected] lvs-fullnat-synproxy]# ls

lvs-2.6.32-220.23.1.el6.patch README

lvs-tools.tar.gz              toa-2.6.32-220.23.1.el6.patch

[[email protected] lvs-fullnat-synproxy]# tar zxf lvs-tools.tar.gz  #解压

[[email protected] lvs-fullnat-synproxy]# ls

lvs-2.6.32-220.23.1.el6.patch README                        tools

lvs-tools.tar.gz              toa-2.6.32-220.23.1.el6.patch

[[email protected] lvs-fullnat-synproxy]# cd tools/

[[email protected] tools]# ls

ipvsadm  keepalived  quagga rpm

[[email protected] tools]# cd keepalived/                           #切换目录

[[email protected] keepalived]# ll -d /lib/modules/`uname -r`/build #查看

lrwxrwxrwx 1 root root 80 Oct 20 12:23/lib/modules/2.6.32-220.23.1.el6/build ->/root/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/linux-2.6.32-220.23.1.el6.x86_64

[[email protected] keepalived]# ./configure--with-kernel-dir=/lib/modules/2.6.32-220.23.1.el6/build                                             #配置，生成Makfile

如有下面报错：

则需：

[[email protected] keepalived]# yum install -y openssl-devel

[[email protected] keepalived]# ./configure--with-kernel-dir=/lib/modules/2.6.32-220.23.1.el6/build                                             #重新配置

如下报错：

则需：

[[email protected] keepalived]# yum install popt-devel -y

[[email protected] keepalived]# ./configure --with-

kernel-dir=/lib/modules/2.6.32-220.23.1.el6/build              #重新配置

结果：

[[email protected] keepalived]# make                     #编译

[[email protected] keepalived]# make install             #安装

[[email protected] keepalived]# cd ..

[[email protected] tools]# cd ipvsadm/

[[email protected] ipvsadm]# make                        #编译

[[email protected] ipvsadm]# make install                #安装ipvsadm

 C）测试

[[email protected] ipvsadm]# ipvsadm --help | grep fullnat  #查看，内核添加fullnat模块成功

  --fullnat      -b                   fullnat mode

[[email protected] ipvsadm]# vim /boot/grub/grub.conf    #将引导文件里的default该回原来的数值

 10 default=2

本文出自 “不忘初心，方得始终” 博客，请务必保留此出处http://12087746.blog.51cto.com/12077746/1865997