濡備綍鎭㈠鍥?GRUB2 BLS 閰嶇疆鏂囦欢闂鑰屽惎鍔ㄥけ璐ョ殑 Red Hat 8 鎴?CentOS 8 瀹炰緥锛?/h1>
涓婃鏇存柊鏃堕棿锛?020 骞?2 鏈?3 鏃?/i>
鎴戝湪杩愯涓€涓娇鐢?Red Hat 8 鎴?CentOS 8 鐨?Amazon Elastic Compute Cloud (Amazon EC2) 瀹炰緥銆傚鏋?/boot/loader/entries/ 涓嬬殑 BLS 閰嶇疆鏂囦欢 (blscfg) 鎹熷潖鎴栬鍒犻櫎锛屾垜璇ュ浣曟仮澶嶅畠锛?br />
绠€鐭弿杩?/h2>
RHEL 8 鍜?Centos 8 涓殑 GRUB2 灏?blscfg 鏂囦欢鍜?/boot/loader 涓殑鏉＄洰鐢ㄤ綔鍚姩閰嶇疆锛屼笉鍐嶄娇鐢ㄤ互鍓嶇殑 grub.cfg 鏍煎紡銆傚缓璁娇鐢?grubby 宸ュ叿鏉ョ鐞?blscfg 鏂囦欢鍜屾绱?/boot/loader/entries/ 涓殑淇℃伅銆傚鏋滃湪姝ょ己澶?blscfg鏂囦欢鎴栬鏂囦欢鎹熷潖锛屽垯 grubby 涓嶄細鏄剧ず浠讳綍缁撴灉銆傛偍蹇呴』閲嶆柊鐢熸垚鏂囦欢鎵嶈兘鎭㈠鍔熻兘銆傝閲嶆柊鐢熸垚 blscfg 鏂囦欢锛岃鍒涘缓涓€涓复鏃舵晳鎻村疄渚嬶紝鐒跺悗灏嗘偍鐨?Amazon Elastic Block Store (Amazon EBS) 鍗烽噸鏂版寕杞藉埌璇ユ晳鎻村疄渚嬩笂銆備粠鏁戞彺瀹炰緥閲嶆柊鐢熸垚浠讳綍宸插畨瑁呭唴鏍哥殑 blscfg 鏂囦欢銆?/p>
閲嶈鎻愮ず锛?/b>璇峰嬁鍦ㄥ疄渚嬪瓨鍌ㄦ敮鎸佺殑瀹炰緥涓婃墽琛屾鎿嶄綔銆傛鎭㈠鏂规硶闇€瑕侀鍏堝仠姝㈢劧鍚庡啀閲嶅惎瀹炰緥锛岃繖鎰忓懗鐫€璇ュ疄渚嬩笂鐨勪换浣曟暟鎹兘灏嗕涪澶便€傛湁鍏虫洿澶氫俊鎭紝璇峰弬闃?a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/RootDeviceStorage.html#display-instance-root-device-type" target="_blank">纭畾瀹炰緥鐨勬牴璁惧绫诲瀷銆?br />
瑙ｅ喅鏂规硶
灏嗘牴鍗疯繛鎺ュ埌鏁戞彺 EC2 瀹炰緥
1.涓烘牴鍗峰垱寤?EBS 蹇収銆傛湁鍏宠缁嗕俊鎭紝璇峰弬闃?a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-creating-snapshot.html" target="_blank">鍒涘缓 Amazon EBS 蹇収銆?/p>
2.鎵撳紑 Amazon EC2 鎺у埗鍙?/a>銆?/p>
娉ㄦ剰锛?/b>璇风‘淇濇偍浣嶄簬姝ｇ‘鐨?鍖哄煙銆侫mazon EC2 鎺у埗鍙板湪璐︽埛淇℃伅鐨勫彸渚ф樉绀烘偍鎵€鍦ㄧ殑鍖哄煙銆傚鏋滈渶瑕侊紝鎮ㄥ彲浠ヤ粠涓嬫媺鑿滃崟涓€夋嫨鍏朵粬鍖哄煙銆?/p>
3.浠庡鑸獥鏍间腑閫夋嫨瀹炰緥锛岀劧鍚庨€夋嫨鍙楁崯鐨勫疄渚嬨€?/p>
4.渚濇閫夋嫨鎿嶄綔銆?b>瀹炰緥鐘舵€?/b>鍜?b>鍋滄銆?/p>
5.鍦?b>鎻忚堪閫夐」鍗′腑鐨?b>鏍硅澶?/b>涓嬶紝閫夋嫨 /dev/sda1锛岀劧鍚庨€夋嫨 EBS ID銆?/p>
6.渚濇閫夋嫨鎿嶄綔銆?b>鍒嗙鍗?/b>銆?b>鏄紝鍒嗙銆傝涓?b>鍙敤鍖?/b>銆?/p>
7.鍦ㄥ悓涓€鍙敤鍖轰腑鍚姩涓€涓被浼肩殑鏁戞彺 EC2 瀹炰緥銆傛瀹炰緥灏嗘垚涓烘偍鐨勬晳鎻村疄渚嬨€?/p>
8.鍚姩鏁戞彺瀹炰緥鍚庯紝浠庡鑸獥鏍间腑閫夋嫨鍗?/b>锛岀劧鍚庨€夋嫨宸插垎绂荤殑鍙楁崯瀹炰緥鏍瑰嵎銆?/p>
9.閫夋嫨鎿嶄綔锛岀劧鍚庨€夋嫨鎸傝浇鍗?/b>銆?/p>
10.閫夋嫨鏁戞彺瀹炰緥 ID (id-xxxxx)锛岀劧鍚庤缃竴涓湭浣跨敤鐨勮澶囥€傚湪姝や緥涓紝鏈娇鐢ㄧ殑璁惧涓?/dev/sdf銆?/p>
鎸傝浇鍙楁崯瀹炰緥鐨勫嵎
1.浣跨敤 SSH 杩炴帴鍒版晳鎻村疄渚嬨€?/p>
2.杩愯 lsblk 鍛戒护浠ユ煡鐪嬪彲鐢ㄧ殑纾佺洏璁惧銆?br />
s lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 202:0 0 10G 0 disk
鈹溾攢xvda1 202:1 0 1M 0 part
鈹斺攢xvda2 202:2 0 10G 0 part /
xvdf 202:80 0 10G 0 disk
鈹溾攢xvdf1 202:81 0 1M 0 part
鈹斺攢xvdf2 202:82 0 10G 0 part 娉ㄦ剰锛?/b>鍩轰簬 Nitro 鐨勫疄渚嬩細灏?EBS 鍗蜂綔涓?NVMe 鍧楀偍瀛樿澶囧叕寮€銆?b>lsblk 鍛戒护鍦ㄥ熀浜?Nitro 鐨勫疄渚嬩笂鐢熸垚鐨勮緭鍑烘樉绀虹鐩樺悕绉颁负 nvmen1銆傛湁鍏虫洿澶氫俊鎭紝璇峰弬闃?Linux 瀹炰緥涓婄殑 Amazon EBS 鍜?NVMe銆?/p>
3.鍒涘缓涓€涓寕杞界洰褰曪紝鐒跺悗灏嗘寕杞藉嵎鐨勬牴鍒嗗尯鎸傝浇鍒版鏂扮洰褰曘€傚湪涓婁緥涓紝鎸傝浇鍗风殑鏍瑰垎鍖轰负 /dev/xvdf2銆傛湁鍏虫洿澶氫俊鎭紝璇峰弬闃?a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html" target="_blank">浣?Amazon EBS 鍗峰彲鍦?Linux 涓婁娇鐢?/a>銆?br />
sudo mkdir /mount
sudo mount /dev/xvdf2 /mount4.灏嗘晳鎻村疄渚嬬殑 /dev銆?b>/run銆?b>/proc 鍜?/sys 鎸傝浇鑷充笌鏂版寕杞藉嵎鐩稿悓鐨勮矾寰勩€?br />
sudo mount -o bind /dev /mount/dev
sudo mount -o bind /run /mount/run
sudo mount -o bind /proc /mount/proc
sudo mount -o bind /sys /mount/sys5.鍚姩 chroot 鐜銆?br />
sudo chroot /mount閲嶆柊鐢熸垚 blscfg 鏂囦欢
1.杩愯 rpm 鍛戒护銆傝涓嬪疄渚嬬殑鍙敤鍐呮牳銆?br />
# rpm -q --last kernel
kernel-4.18.0-147.3.1.el8_1.x86_64 Tue 21 Jan 2020 05:11:16 PM UTC
kernel-4.18.0-80.4.2.el8_0.x86_64 Tue 18 Jun 2019 05:06:11 PM UTC2.瑕侀噸鏂板垱寤?blscfg 鏂囦欢锛岃杩愯 kernel-install 鍛戒护銆?/p>
娉ㄦ剰锛?/b>kernel-install 浜岃繘鍒舵枃浠堕殢 systemd-udev rpm 瀹夎鍖呬竴璧锋彁渚涖€?br />
sudo kernel-install add 4.18.0-147.3.1.el8_1.x86_64 /lib/modules/4.18.0-147.3.1.el8_1.x86_64/vmlinuz 灏?4.18.0-147.3.1.el8_0.x86_64 鏇挎崲涓烘偍鐨勫唴鏍哥増鏈彿銆?/p>
鎸囧畾鍐呮牳鐨?blscfg 鏂囦欢灏嗗湪 /boot/loader/entries/ 涓嬮噸鏂扮敓鎴愩€?br />
# ls /boot/loader/entries/
2bb67fbca2394ed494dc348993fb9b94-4.18.0-147.3.1.el8_1.x86_64.conf3.濡傛灉闇€瑕侊紝璇蜂负瀹炰緥涓婂畨瑁呯殑鍏朵粬鍐呮牳閲嶅绗?2 姝ャ€傛渶鏂板唴鏍稿皢琚涓洪粯璁ゅ唴鏍搞€?/p>
4.杩愯 grubby 鍛戒护 --default kernel 浠ユ煡鐪嬪綋鍓嶉粯璁ゅ唴鏍搞€?br />
sudo grubby --default-kernel5.閫€鍑?chroot 骞跺嵏杞?/dev銆?b>/run銆?b>/proc 鍜?/sys 鎸傝浇銆?br />
Exit
sudo umount /mount/dev
sudo umount /mount/run
sudo umount /mount/proc
sudo umount /mount/sys
sudo umount /mount6.浣跨敤姝ｇ‘鐨勫潡鍌ㄥ瓨璁惧鏄犲皠灏嗚澶囬噸鏂版寕杞藉埌鍘熷疄渚嬨€傝澶囩幇鍦ㄥ皢浣跨敤榛樿鍐呮牳鍚姩銆?br />