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十多年的分宜網(wǎng)站建設(shè)經(jīng)驗(yàn),針對(duì)設(shè)計(jì)、前端、開發(fā)、售后、文案、推廣等六對(duì)一服務(wù),響應(yīng)快,48小時(shí)及時(shí)工作處理。網(wǎng)絡(luò)營(yíng)銷推廣的優(yōu)勢(shì)是能夠根據(jù)用戶設(shè)備顯示端的尺寸不同,自動(dòng)調(diào)整分宜建站的顯示方式,使網(wǎng)站能夠適用不同顯示終端,在瀏覽器中調(diào)整網(wǎng)站的寬度,無(wú)論在任何一種瀏覽器上瀏覽網(wǎng)站,都能展現(xiàn)優(yōu)雅布局與設(shè)計(jì),從而大程度地提升瀏覽體驗(yàn)。成都創(chuàng)新互聯(lián)從事“分宜網(wǎng)站設(shè)計(jì)”,“分宜網(wǎng)站推廣”以來(lái),每個(gè)客戶項(xiàng)目都認(rèn)真落實(shí)執(zhí)行。
一、用centos鏡像搭建本地yum源
由于安裝centos后的默認(rèn)yum源為centos的官方地址,所以在國(guó)內(nèi)使用很慢甚至無(wú)法訪問(wèn),所以一般的做法都是把默認(rèn)的yum源替換成aliyun的yum源或者163等國(guó)內(nèi)的yum源(下文介紹如何配置)。
但是以上的方法都是需要網(wǎng)絡(luò)的,當(dāng)沒(méi)有網(wǎng)絡(luò)的時(shí)候就無(wú)法使用了,所以還有一個(gè)常用的方法就是用centos的iso鏡像搭建本地yum源,這樣安裝軟件的速度就會(huì)飛快,缺點(diǎn)是可能有些包沒(méi)有。
1.安裝centos后默認(rèn)的yum源如下
[root@kangvcar ~]# ll /etc/yum.repos.d/ total 32 -rw-r--r--. 1 root root 1664 dec 9 2015 centos-base.repo -rw-r--r--. 1 root root 1309 dec 9 2015 centos-cr.repo -rw-r--r--. 1 root root 649 dec 9 2015 centos-debuginfo.repo -rw-r--r--. 1 root root 290 dec 9 2015 centos-fasttrack.repo -rw-r--r--. 1 root root 630 dec 9 2015 centos-media.repo -rw-r--r--. 1 root root 1331 dec 9 2015 centos-sources.repo -rw-r--r--. 1 root root 1952 dec 9 2015 centos-vault.repo
2.把默認(rèn)yum源備份(可選)
[root@kangvcar ~]# mkdir /opt/centos-yum.bak [root@kangvcar ~]# mv /etc/yum.repos.d/* /opt/centos-yum.bak/
3.在虛擬機(jī)上掛載centos鏡像文件
[root@kangvcar ~]# mount -t iso9660 /dev/sr0 /opt/centos mount: /dev/sr0 is write-protected, mounting read-only
4.編寫repo文件并指向鏡像的掛載目錄
[root@kangvcar ~]# vi /etc/yum.repos.d/local.repo [local] name=local baseurl=file:///opt/centos enabled=1 gpgcheck=0
5.清除緩存
[root@kangvcar ~]# yum clean all loaded plugins: fastestmirror cleaning repos: local cleaning up everything cleaning up list of fastest mirrors [root@kangvcar ~]# yum makecache //把yum源緩存到本地,加快軟件的搜索好安裝速度 [root@kangvcar ~]# yum list //列出了3780個(gè)包
二、把默認(rèn)的centos yum源修改成國(guó)內(nèi)的aliyun yum源
阿里云官方教程:
1.安裝centos后默認(rèn)的yum源如下
[root@kangvcar ~]# ll /etc/yum.repos.d/ total 32 -rw-r--r--. 1 root root 1664 dec 9 2015 centos-base.repo -rw-r--r--. 1 root root 1309 dec 9 2015 centos-cr.repo -rw-r--r--. 1 root root 649 dec 9 2015 centos-debuginfo.repo -rw-r--r--. 1 root root 290 dec 9 2015 centos-fasttrack.repo -rw-r--r--. 1 root root 630 dec 9 2015 centos-media.repo -rw-r--r--. 1 root root 1331 dec 9 2015 centos-sources.repo -rw-r--r--. 1 root root 1952 dec 9 2015 centos-vault.repo
2.把默認(rèn)yum源備份(可選)
[root@kangvcar ~]# mkdir /opt/centos-yum.bak [root@kangvcar ~]# mv /etc/yum.repos.d/* /opt/centos-yum.bak/
3.下載aliyun yum源repo文件(對(duì)應(yīng)自己的系統(tǒng)版本下載即可)
#各系統(tǒng)版本repo文件對(duì)應(yīng)的下載操作 centos 5 wget -o /etc/yum.repos.d/centos-base.repo http://mirrors.aliyun.com/repo/centos-5.repo centos 6 wget -o /etc/yum.repos.d/centos-base.repo http://mirrors.aliyun.com/repo/centos-6.repo centos 7 wget -o /etc/yum.repos.d/centos-base.repo http://mirrors.aliyun.com/repo/centos-7.repo
[root@kangvcar ~]# cat /etc/redhat-release //查看系統(tǒng)的版本 centos linux release 7.2.1511 (core) [root@kangvcar ~]# wget -o /etc/yum.repos.d/centos-base.repo http://mirrors.aliyun.com/repo/centos-7.repo --2017-06-20 06:43:08-- http://mirrors.aliyun.com/repo/centos-7.repo resolving mirrors.aliyun.com (mirrors.aliyun.com)... 112.124.140.210, 115.28.122.210 connecting to mirrors.aliyun.com (mirrors.aliyun.com)|112.124.140.210|:80... connected. http request sent, awaiting response... 200 ok length: 2573 (2.5k) [application/octet-stream] saving to: ‘/etc/yum.repos.d/centos-base.repo' 100%[=======================================================================================================>] 2,573 --.-k/s in 0s 2017-06-20 06:43:08 (118 mb/s) - ‘/etc/yum.repos.d/centos-base.repo' saved [2573/2573]
4.清除緩存
[root@kangvcar ~]# yum clean all loaded plugins: fastestmirror cleaning repos: base extras updates cleaning up everything cleaning up list of fastest mirrors [root@kangvcar ~]# yum makecache //把yum源緩存到本地,加快軟件的搜索好安裝速度 [root@kangvcar ~]# yum list //總共列出了9954個(gè)包
三、把默認(rèn)的centos yum源修改成國(guó)內(nèi)的163源
163官方教程:
1.安裝centos后默認(rèn)的yum源如下
[root@kangvcar ~]# ll /etc/yum.repos.d/ total 32 -rw-r--r--. 1 root root 1664 dec 9 2015 centos-base.repo -rw-r--r--. 1 root root 1309 dec 9 2015 centos-cr.repo -rw-r--r--. 1 root root 649 dec 9 2015 centos-debuginfo.repo -rw-r--r--. 1 root root 290 dec 9 2015 centos-fasttrack.repo -rw-r--r--. 1 root root 630 dec 9 2015 centos-media.repo -rw-r--r--. 1 root root 1331 dec 9 2015 centos-sources.repo -rw-r--r--. 1 root root 1952 dec 9 2015 centos-vault.repo
2.把默認(rèn)yum源備份(可選)
[root@kangvcar ~]# mkdir /opt/centos-yum.bak [root@kangvcar ~]# mv /etc/yum.repos.d/* /opt/centos-yum.bak/
3.下載163 yum源repo文件
#各系統(tǒng)版本repo文件對(duì)應(yīng)的下載操作 centos 5 wget -o /etc/yum.repos.d/centos5-base-163.repo http://mirrors.163.com/.help/centos5-base-163.repo centos 6 wget -o /etc/yum.repos.d/centos6-base-163.repo http://mirrors.163.com/.help/centos6-base-163.repo centos 7 wget -o /etc/yum.repos.d/centos7-base-163.repo http://mirrors.163.com/.help/centos7-base-163.repo
[root@kangvcar ~]# cat /etc/redhat-release //查看系統(tǒng)的版本 centos linux release 7.2.1511 (core) [root@kangvcar ~]# wget -o /etc/yum.repos.d/centos7-base-163.repo http://mirrors.163.com/.help/centos7-base-163.repo --2017-06-20 06:29:47-- http://mirrors.163.com/.help/centos7-base-163.repo resolving mirrors.163.com (mirrors.163.com)... 123.58.173.185, 123.58.173.186 connecting to mirrors.163.com (mirrors.163.com)|123.58.173.185|:80... connected. http request sent, awaiting response... 200 ok length: 1572 (1.5k) [application/octet-stream] saving to: ‘/etc/yum.repos.d/centos7-base-163.repo' 100%[=======================================================================================================>] 1,572 --.-k/s in 0s 2017-06-20 06:29:47 (293 mb/s) - ‘/etc/yum.repos.d/centos7-base-163.repo' saved [1572/1572]
4.清除緩存
[root@kangvcar ~]# yum clean all loaded plugins: fastestmirror cleaning repos: base extras updates cleaning up everything cleaning up list of fastest mirrors [root@kangvcar ~]# yum makecache //把yum源緩存到本地,加快軟件的搜索好安裝速度 [root@kangvcar ~]# yum list //總共列出了9951個(gè)包
四、修改yum源的優(yōu)先級(jí)
ps:當(dāng)既有本地yum源又有163源的時(shí)候,我們?cè)谘b軟件包的時(shí)候當(dāng)然希望先用本地的yum源去安裝,本地找不到可用的包時(shí)再使用163源去安裝軟件,這里就涉及到了優(yōu)先級(jí)的問(wèn)題,yum提供的插件yum-plugin-priorities.noarch可以解決這個(gè)問(wèn)題
1.查看系統(tǒng)是否安裝了優(yōu)先級(jí)的插件
[root@kangvcar ~]# rpm -qa | grep yum-plugin- yum-plugin-fastestmirror-1.1.31-34.el7.noarch //這里看到?jīng)]有安裝yum-plugin-priorities.noarch這個(gè)插件 [root@kangvcar ~]# yum search yum-plugin-priorities //用search查看是否有此插件可用 loaded plugins: fastestmirror loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com ====================================================== n/s matched: yum-plugin-priorities ======================================================= yum-plugin-priorities.noarch : plugin to give priorities to packages from different repos
2.安裝yum-plugin-priorities.noarch插件
[root@kangvcar ~]# yum -y install yum-plugin-priorities.noarch
3.查看插件是否啟用
[root@kangvcar ~]# cat /etc/yum/pluginconf.d/priorities.conf [main] enabled = 1 //1為啟用;0為禁用
4.修改本地yum源優(yōu)先使用
[root@kangvcar ~]# ll /etc/yum.repos.d/ total 8 -rw-r--r--. 1 root root 2573 may 15 2015 centos-base.repo -rw-r--r--. 1 root root 67 jun 20 06:04 local.repo //有兩個(gè)repo文件 [root@kangvcar ~]# vi /etc/yum.repos.d/local.repo [local] name=local baseurl=file:///opt/centos enabled=1 gpgcheck=0 priority=1 //在原基礎(chǔ)上加入priority=1 ;數(shù)字越小優(yōu)先級(jí)越高 //可以繼續(xù)修改其他源的priority值,經(jīng)測(cè)試僅配置本地源的優(yōu)先級(jí)為priority=1就會(huì)優(yōu)先使用本地源了
5.測(cè)試
配置優(yōu)先級(jí)前:(使用阿里云yum源) [root@kangvcar ~]# yum -y install vim dependencies resolved ================================================================================================================================================= package arch version repository size ================================================================================================================================================= installing: vim-enhanced x86_64 2:7.4.160-1.el7_3.1 updates 1.0 m updating for dependencies: vim-common x86_64 2:7.4.160-1.el7_3.1 updates 5.9 m 省略···
配置優(yōu)先級(jí)后:(使用本地yum源) [root@kangvcar ~]# yum -y install vim dependencies resolved ================================================================================================================================================= package arch version repository size ================================================================================================================================================= installing: vim-enhanced x86_64 2:7.4.160-1.el7 local 1.0 m installing for dependencies: gpm-libs x86_64 1.20.7-5.el7 local 32 k perl x86_64 4:5.16.3-286.el7 local 8.0 m perl-carp noarch 1.26-244.el7 local 19 k perl-encode x86_64 2.51-7.el7 local 1.5 m perl-exporter noarch 5.68-3.el7 local 28 k perl-file-path noarch 2.09-2.el7 local 26 k perl-file-temp noarch 0.23.01-3.el7 local 56 k 省略···
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