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在 AL2 023 中管理软件包和操作系统更新
与之前版本的亚马逊 Linux 不同， AL2023 AMIs 被锁定到特定版本的亚马逊 Linux 存储库。要对 AL2 023 实例同时应用安全修复和错误修复，请更新 DNF 配置到最新的可用发行版本。或者，启动一个较新的 AL2 023 实例。
本节介绍如何管理 DNF 正在运行的实例上的软件包和存储库。它还描述了如何配置 DNF 通过用户数据脚本在启动时启用最新可用的 Amazon Linux 存储库。有关更多信息，请参阅 DNF 命令参考。
建议应用新 AL2 023 版本中的所有可用更新。只选择安全更新，或者只选择特定的更新应该是例外而不是规则。有关与安全公告特定实例相关的列表，请参阅列出适用的公告。有关仅安装与特定公告相关的更新的信息，请参阅就地应用安全更新。
如果您想报告漏洞或对 AWS 云服务或开源项目有安全疑虑，请使用 “漏洞报告” 页面与 AWS 安全部门联系
查看可用的软件包更新
您可以使用 dnf check-update 命令查看有关您的系统的任何更新。对于 AL2 023，我们建议您在命令中添加--releasever=version-number选项。
当你添加这个选项时，DNF 还会检查更高版本的存储库是否有更新。例如，当您运行 dnf check-update 命令后，使用最新返回的版本作为 version-number
如果将实例更新为使用最新版本的存储库，则输出将包括所有要更新的软件包的列表。
如果您没有在 dnf check-update 命令中使用可选标志来指定发布版本，则只查看当前配置的存储库版本。这意味着不会查看存储库的更高版本中的软件包。
- Updates in a specific version
-
在这个例子中，我们将看看如果我们启动了 2023.0.20230315 版本的容器，那么 2023.1.20230628 版本中有哪些可用的更新。
在此示例中，我们将从 2023.0.202 30315 版本的容器镜像开始。
首先，我们从容器注册表中获取此容器镜像。末尾的表示特定版本的图像版本；此图像版本通常为零。.0
$ docker pull public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
2023.0.20230315.0: Pulling from amazonlinux/amazonlinux
b76f3b09316a: Pull complete
Digest: sha256:94e7183b0739140dbd5b639fb7600f0a2299cec5df8780c26d9cb409da5315a9
Status: Downloaded newer image for public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
我们现在可以在容器内生成一个外壳，我们将从中检查是否有更新。
$ docker run -it public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
bash-5.2#
该dnf check-update命令现在用于检查 2023.1.202 30628 版本中可用的更新。
应用软件包更新是一项特权操作。尽管在容器中运行时通常不需要提升权限，但如果在非容器化环境（例如 Amazon EC2 实例）中运行，则无需提升权限即可检查更新。
$ dnf check-update --releasever=2023.1.20230628
Amazon Linux 2023 repository 60 MB/s | 15 MB 00:00
Last metadata expiration check: 0:00:02 ago on Mon Jul 22 17:25:34 2024.
amazon-linux-repo-cdn.noarch 2023.1.20230628-0.amzn2023 amazonlinux
ca-certificates.noarch 2023.2.60-1.0.amzn2023.0.2 amazonlinux
curl-minimal.x86_64 8.0.1-1.amzn2023 amazonlinux
glib2.x86_64 2.74.7-688.amzn2023.0.1 amazonlinux
glibc.x86_64 2.34-52.amzn2023.0.3 amazonlinux
glibc-common.x86_64 2.34-52.amzn2023.0.3 amazonlinux
glibc-minimal-langpack.x86_64 2.34-52.amzn2023.0.3 amazonlinux
gnupg2-minimal.x86_64 2.3.7-1.amzn2023.0.4 amazonlinux
keyutils-libs.x86_64 1.6.3-1.amzn2023 amazonlinux
libcap.x86_64 2.48-2.amzn2023.0.3 amazonlinux
libcurl-minimal.x86_64 8.0.1-1.amzn2023 amazonlinux
libgcc.x86_64 11.3.1-4.amzn2023.0.3 amazonlinux
libgomp.x86_64 11.3.1-4.amzn2023.0.3 amazonlinux
libstdc++.x86_64 11.3.1-4.amzn2023.0.3 amazonlinux
libxml2.x86_64 2.10.4-1.amzn2023.0.1 amazonlinux
ncurses-base.noarch 6.2-4.20200222.amzn2023.0.4 amazonlinux
ncurses-libs.x86_64 6.2-4.20200222.amzn2023.0.4 amazonlinux
openssl-libs.x86_64 1:3.0.8-1.amzn2023.0.3 amazonlinux
python3-rpm.x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux
rpm.x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux
rpm-build-libs.x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux
rpm-libs.x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux
rpm-sign-libs.x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux
system-release.noarch 2023.1.20230628-0.amzn2023 amazonlinux
tzdata.noarch 2023c-1.amzn2023.0.1 amazonlinux
bash-5.2#
system-release软件包的版本显示了dnf upgrade命令将更新到的版本，即命令中请求的 2023.1.20230628 版本。dnf check-update --releasever=2023.1.20230628
- Updates in the latest version
-
在这个例子中，我们将看看如果我们启动了 202 3.4.20 240319 latest 版本的容器，那么在 AL2 023 版本中有哪些可用的更新。在撰写本文时，latest版本为 2023.5.20240708，因此本示例中列出的更新将以该版本为准。
在此示例中，我们将从 2023.4.20 240319 版本的容器镜像开始。
首先，我们从容器注册表中获取此容器镜像。末尾的表示特定版本的图像版本。.1虽然图像版本通常为零，但此示例使用的是图像版本为一个的版本。
$ docker pull public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
2023.4.20240319.1: Pulling from amazonlinux/amazonlinux
6de065fda9a2: Pull complete
Digest: sha256:b4838c4cc9211d966b6ea158dacc9eda7433a16ba94436508c2d9f01f7658b4e
Status: Downloaded newer image for public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
我们现在可以在容器内生成一个外壳，我们将从中检查是否有更新。
$ docker run -it public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
bash-5.2#
该dnf check-update命令现在用于检查该版本中可用的更新，在撰写本文时，该latest版本是 2023.5. 20 240708。
应用软件包更新是一项特权操作。尽管在容器中运行时通常不需要提升权限，但如果在非容器化环境（例如 Amazon EC2 实例）中运行，则无需提升权限即可检查更新。
$ dnf --releasever=latest check-update
Amazon Linux 2023 repository 78 MB/s | 25 MB 00:00
Last metadata expiration check: 0:00:04 ago on Mon Jul 22 17:39:13 2024.
amazon-linux-repo-cdn.noarch 2023.5.20240708-1.amzn2023 amazonlinux
curl-minimal.x86_64 8.5.0-1.amzn2023.0.4 amazonlinux
dnf.noarch 4.14.0-1.amzn2023.0.5 amazonlinux
dnf-data.noarch 4.14.0-1.amzn2023.0.5 amazonlinux
expat.x86_64 2.5.0-1.amzn2023.0.4 amazonlinux
glibc.x86_64 2.34-52.amzn2023.0.10 amazonlinux
glibc-common.x86_64 2.34-52.amzn2023.0.10 amazonlinux
glibc-minimal-langpack.x86_64 2.34-52.amzn2023.0.10 amazonlinux
krb5-libs.x86_64 1.21-3.amzn2023.0.4 amazonlinux
libblkid.x86_64 2.37.4-1.amzn2023.0.4 amazonlinux
libcurl-minimal.x86_64 8.5.0-1.amzn2023.0.4 amazonlinux
libmount.x86_64 2.37.4-1.amzn2023.0.4 amazonlinux
libnghttp2.x86_64 1.59.0-3.amzn2023.0.1 amazonlinux
libsmartcols.x86_64 2.37.4-1.amzn2023.0.4 amazonlinux
libuuid.x86_64 2.37.4-1.amzn2023.0.4 amazonlinux
openssl-libs.x86_64 1:3.0.8-1.amzn2023.0.12 amazonlinux
python3.x86_64 3.9.16-1.amzn2023.0.8 amazonlinux
python3-dnf.noarch 4.14.0-1.amzn2023.0.5 amazonlinux
python3-libs.x86_64 3.9.16-1.amzn2023.0.8 amazonlinux
system-release.noarch 2023.5.20240708-1.amzn2023 amazonlinux
yum.noarch 4.14.0-1.amzn2023.0.5 amazonlinux
bash-5.2#
system-release软件包的版本显示了dnf upgrade命令将更新到的版本。
对于此命令，如果有更新的软件包可用，则返回码为 100。如果没有更新的软件包可用，则返回码为 0。此外，输出中还会列出所有要更新的软件包。
使用应用安全更新 DNF 和存储库版本
新的软件包更新和安全更新仅适用于新的存储库版本。对于从较早的 AL2 023 AMI 版本启动的实例，必须先更新存储库版本，然后才能安装安全更新。dnf check-release-update 命令包括一个示例更新命令，可将系统上安装的所有软件包更新为较新存储库中的版本。
如果您没有在 dnf check-update 命令中使用可选标志来指定发布版本，则只查看当前配置的存储库版本。这意味着对任何更高版本的存储库中存在的已安装软件包的任何更新都不会被应用。
本节介绍推荐的升级路径，即应用所有可用更新，而不是选择单个更新或仅选择标记为安全更新的更新。通过应用所有更新，现有实例将移至与启动更新后的 AMI 相同的程序包集。这种一致性减少了队列中软件包版本的差异。有关应用特定更新的更多信息，请参阅就地应用安全更新。
- Applying updates in a specific version
-
在此示例中，如果我们启动了 2023.0.20230315 版本的容器，我们将应用 2023.1.20230628 版本中可用的更新。
在此示例中，我们将从 2023.0.202 30315 版本的容器镜像开始。
首先，我们从容器注册表中获取此容器镜像。末尾的表示特定版本的图像版本；此图像版本通常为零。.0
$ docker pull public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
2023.0.20230315.0: Pulling from amazonlinux/amazonlinux
b76f3b09316a: Pull complete
Digest: sha256:94e7183b0739140dbd5b639fb7600f0a2299cec5df8780c26d9cb409da5315a9
Status: Downloaded newer image for public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
我们现在可以在容器内生成一个外壳，然后从中应用更新。
$ docker run -it public.ecr.aws/amazonlinux/amazonlinux:2023.0.20230315.0
bash-5.2#
该dnf upgrade命令现在用于应用 2023.1.202 30628 版本中存在的所有更新。
应用软件包更新是一项特权操作。尽管在容器中运行时通常不需要提升权限，但如果在 Amazon EC2 实例等非容器化环境中运行，则需要以用户身份运行dnf upgrade命令。root这可以使用sudo或su命令来完成。
$ dnf upgrade --releasever=2023.1.20230628
Amazon Linux 2023 repository 38 MB/s | 15 MB 00:00
Last metadata expiration check: 0:00:02 ago on Mon Jul 22 17:49:08 2024.
Dependencies resolved.
=================================================================================
Package Arch Version Repository Size
=================================================================================
Upgrading:
amazon-linux-repo-cdn noarch 2023.1.20230628-0.amzn2023 amazonlinux 18 k
ca-certificates noarch 2023.2.60-1.0.amzn2023.0.2 amazonlinux 829 k
curl-minimal x86_64 8.0.1-1.amzn2023 amazonlinux 150 k
glib2 x86_64 2.74.7-688.amzn2023.0.1 amazonlinux 2.7 M
glibc x86_64 2.34-52.amzn2023.0.3 amazonlinux 1.9 M
glibc-common x86_64 2.34-52.amzn2023.0.3 amazonlinux 307 k
glibc-minimal-langpack x86_64 2.34-52.amzn2023.0.3 amazonlinux 35 k
gnupg2-minimal x86_64 2.3.7-1.amzn2023.0.4 amazonlinux 421 k
keyutils-libs x86_64 1.6.3-1.amzn2023 amazonlinux 33 k
libcap x86_64 2.48-2.amzn2023.0.3 amazonlinux 67 k
libcurl-minimal x86_64 8.0.1-1.amzn2023 amazonlinux 249 k
libgcc x86_64 11.3.1-4.amzn2023.0.3 amazonlinux 105 k
libgomp x86_64 11.3.1-4.amzn2023.0.3 amazonlinux 280 k
libstdc++ x86_64 11.3.1-4.amzn2023.0.3 amazonlinux 744 k
libxml2 x86_64 2.10.4-1.amzn2023.0.1 amazonlinux 706 k
ncurses-base noarch 6.2-4.20200222.amzn2023.0.4 amazonlinux 60 k
ncurses-libs x86_64 6.2-4.20200222.amzn2023.0.4 amazonlinux 328 k
openssl-libs x86_64 1:3.0.8-1.amzn2023.0.3 amazonlinux 2.2 M
python3-rpm x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux 88 k
rpm x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux 486 k
rpm-build-libs x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux 90 k
rpm-libs x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux 309 k
rpm-sign-libs x86_64 4.16.1.3-12.amzn2023.0.6 amazonlinux 21 k
system-release noarch 2023.1.20230628-0.amzn2023 amazonlinux 29 k
tzdata noarch 2023c-1.amzn2023.0.1 amazonlinux 433 k
Transaction Summary
=================================================================================
Upgrade 25 Packages
Total download size: 12 M
Is this ok [y/N]:
system-release软件包的版本显示了dnf upgrade命令将更新到的版本，即命令中请求的 2023.1.20230628 版本。dnf upgrade --releasever=2023.1.20230628
默认情况下，dnf会要求您确认是否要应用更新。您可以通过使用-y标志来绕过此提示dnf。在本示例中，该dnf upgrade -y --releasever=2023.1.20230628命令在应用更新之前不会要求进行确认。这在脚本或其他自动化环境中很有用。
确认要应用更新后，即可dnf应用更新。
Is this ok [y/N]:y
Downloading Packages:
(1/25): libcap-2.48-2.amzn2023.0.3.x86_64.rpm 1.5 MB/s | 67 kB 00:00
(2/25): python3-rpm-4.16.1.3-12.amzn2023.0.6.x86 2.1 MB/s | 88 kB 00:00
(3/25): libcurl-minimal-8.0.1-1.amzn2023.x86_64. 2.6 MB/s | 249 kB 00:00
(4/25): glib2-2.74.7-688.amzn2023.0.1.x86_64.rpm 26 MB/s | 2.7 MB 00:00
(5/25): glibc-minimal-langpack-2.34-52.amzn2023. 1.3 MB/s | 35 kB 00:00
(6/25): rpm-build-libs-4.16.1.3-12.amzn2023.0.6. 2.8 MB/s | 90 kB 00:00
(7/25): rpm-libs-4.16.1.3-12.amzn2023.0.6.x86_64 6.6 MB/s | 309 kB 00:00
(8/25): libgcc-11.3.1-4.amzn2023.0.3.x86_64.rpm 3.9 MB/s | 105 kB 00:00
(9/25): glibc-common-2.34-52.amzn2023.0.3.x86_64 11 MB/s | 307 kB 00:00
(10/25): glibc-2.34-52.amzn2023.0.3.x86_64.rpm 31 MB/s | 1.9 MB 00:00
(11/25): rpm-sign-libs-4.16.1.3-12.amzn2023.0.6. 877 kB/s | 21 kB 00:00
(12/25): gnupg2-minimal-2.3.7-1.amzn2023.0.4.x86 15 MB/s | 421 kB 00:00
(13/25): openssl-libs-3.0.8-1.amzn2023.0.3.x86_6 35 MB/s | 2.2 MB 00:00
(14/25): libxml2-2.10.4-1.amzn2023.0.1.x86_64.rp 14 MB/s | 706 kB 00:00
(15/25): curl-minimal-8.0.1-1.amzn2023.x86_64.rp 4.2 MB/s | 150 kB 00:00
(16/25): rpm-4.16.1.3-12.amzn2023.0.6.x86_64.rpm 11 MB/s | 486 kB 00:00
(17/25): libgomp-11.3.1-4.amzn2023.0.3.x86_64.rp 7.0 MB/s | 280 kB 00:00
(18/25): libstdc++-11.3.1-4.amzn2023.0.3.x86_64. 14 MB/s | 744 kB 00:00
(19/25): keyutils-libs-1.6.3-1.amzn2023.x86_64.r 1.6 MB/s | 33 kB 00:00
(20/25): ncurses-libs-6.2-4.20200222.amzn2023.0. 10 MB/s | 328 kB 00:00
(21/25): tzdata-2023c-1.amzn2023.0.1.noarch.rpm 11 MB/s | 433 kB 00:00
(22/25): amazon-linux-repo-cdn-2023.1.20230628-0 781 kB/s | 18 kB 00:00
(23/25): ca-certificates-2023.2.60-1.0.amzn2023. 16 MB/s | 829 kB 00:00
(24/25): system-release-2023.1.20230628-0.amzn20 1.5 MB/s | 29 kB 00:00
(25/25): ncurses-base-6.2-4.20200222.amzn2023.0. 3.1 MB/s | 60 kB 00:00
---------------------------------------------------------------------------------
Total 28 MB/s | 12 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : libgcc-11.3.1-4.amzn2023.0.3.x86_64 1/50
Running scriptlet: libgcc-11.3.1-4.amzn2023.0.3.x86_64 1/50
Upgrading : system-release-2023.1.20230628-0.amzn2023.noarch 2/50
Upgrading : amazon-linux-repo-cdn-2023.1.20230628-0.amzn2023.no 3/50
Upgrading : ncurses-base-6.2-4.20200222.amzn2023.0.4.noarch 4/50
Upgrading : tzdata-2023c-1.amzn2023.0.1.noarch 5/50
Upgrading : glibc-common-2.34-52.amzn2023.0.3.x86_64 6/50
Running scriptlet: glibc-2.34-52.amzn2023.0.3.x86_64 7/50
Upgrading : glibc-2.34-52.amzn2023.0.3.x86_64 7/50
Running scriptlet: glibc-2.34-52.amzn2023.0.3.x86_64 7/50
Upgrading : glibc-minimal-langpack-2.34-52.amzn2023.0.3.x86_64 8/50
Upgrading : libcap-2.48-2.amzn2023.0.3.x86_64 9/50
Upgrading : gnupg2-minimal-2.3.7-1.amzn2023.0.4.x86_64 10/50
Upgrading : libgomp-11.3.1-4.amzn2023.0.3.x86_64 11/50
Running scriptlet: ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch 12/50
Upgrading : ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch 12/50
Running scriptlet: ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch 12/50
Upgrading : openssl-libs-1:3.0.8-1.amzn2023.0.3.x86_64 13/50
Upgrading : libcurl-minimal-8.0.1-1.amzn2023.x86_64 14/50
Upgrading : curl-minimal-8.0.1-1.amzn2023.x86_64 15/50
Upgrading : rpm-libs-4.16.1.3-12.amzn2023.0.6.x86_64 16/50
Upgrading : rpm-4.16.1.3-12.amzn2023.0.6.x86_64 17/50
Upgrading : rpm-build-libs-4.16.1.3-12.amzn2023.0.6.x86_64 18/50
Upgrading : rpm-sign-libs-4.16.1.3-12.amzn2023.0.6.x86_64 19/50
Upgrading : python3-rpm-4.16.1.3-12.amzn2023.0.6.x86_64 20/50
Upgrading : glib2-2.74.7-688.amzn2023.0.1.x86_64 21/50
Upgrading : libxml2-2.10.4-1.amzn2023.0.1.x86_64 22/50
Upgrading : libstdc++-11.3.1-4.amzn2023.0.3.x86_64 23/50
Upgrading : keyutils-libs-1.6.3-1.amzn2023.x86_64 24/50
Upgrading : ncurses-libs-6.2-4.20200222.amzn2023.0.4.x86_64 25/50
Cleanup : glib2-2.73.2-680.amzn2023.0.3.x86_64 26/50
Cleanup : libstdc++-11.3.1-4.amzn2023.0.2.x86_64 27/50
Cleanup : libxml2-2.10.3-2.amzn2023.0.1.x86_64 28/50
Cleanup : python3-rpm-4.16.1.3-12.amzn2023.0.5.x86_64 29/50
Cleanup : rpm-build-libs-4.16.1.3-12.amzn2023.0.5.x86_64 30/50
Cleanup : rpm-sign-libs-4.16.1.3-12.amzn2023.0.5.x86_64 31/50
Cleanup : rpm-libs-4.16.1.3-12.amzn2023.0.5.x86_64 32/50
Cleanup : libcap-2.48-2.amzn2023.0.2.x86_64 33/50
Cleanup : gnupg2-minimal-2.3.7-1.amzn2023.0.3.x86_64 34/50
Cleanup : ncurses-libs-6.2-4.20200222.amzn2023.0.3.x86_64 35/50
Cleanup : libgomp-11.3.1-4.amzn2023.0.2.x86_64 36/50
Cleanup : rpm-4.16.1.3-12.amzn2023.0.5.x86_64 37/50
Cleanup : curl-minimal-7.88.1-1.amzn2023.0.1.x86_64 38/50
Cleanup : libcurl-minimal-7.88.1-1.amzn2023.0.1.x86_64 39/50
Cleanup : openssl-libs-1:3.0.8-1.amzn2023.0.1.x86_64 40/50
Cleanup : keyutils-libs-1.6.1-2.amzn2023.0.2.x86_64 41/50
Cleanup : amazon-linux-repo-cdn-2023.0.20230315-1.amzn2023.no 42/50
Cleanup : system-release-2023.0.20230315-1.amzn2023.noarch 43/50
Cleanup : ca-certificates-2023.2.60-1.0.amzn2023.0.1.noarch 44/50
Cleanup : ncurses-base-6.2-4.20200222.amzn2023.0.3.noarch 45/50
Cleanup : glibc-minimal-langpack-2.34-52.amzn2023.0.2.x86_64 46/50
Cleanup : glibc-2.34-52.amzn2023.0.2.x86_64 47/50
Cleanup : glibc-common-2.34-52.amzn2023.0.2.x86_64 48/50
Cleanup : tzdata-2022g-1.amzn2023.0.1.noarch 49/50
Cleanup : libgcc-11.3.1-4.amzn2023.0.2.x86_64 50/50
Running scriptlet: libgcc-11.3.1-4.amzn2023.0.2.x86_64 50/50
Running scriptlet: ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch 50/50
Running scriptlet: rpm-4.16.1.3-12.amzn2023.0.6.x86_64 50/50
Running scriptlet: libgcc-11.3.1-4.amzn2023.0.2.x86_64 50/50
Verifying : libcurl-minimal-8.0.1-1.amzn2023.x86_64 1/50
Verifying : libcurl-minimal-7.88.1-1.amzn2023.0.1.x86_64 2/50
Verifying : libcap-2.48-2.amzn2023.0.3.x86_64 3/50
Verifying : libcap-2.48-2.amzn2023.0.2.x86_64 4/50
Verifying : glib2-2.74.7-688.amzn2023.0.1.x86_64 5/50
Verifying : glib2-2.73.2-680.amzn2023.0.3.x86_64 6/50
Verifying : python3-rpm-4.16.1.3-12.amzn2023.0.6.x86_64 7/50
Verifying : python3-rpm-4.16.1.3-12.amzn2023.0.5.x86_64 8/50
Verifying : glibc-minimal-langpack-2.34-52.amzn2023.0.3.x86_64 9/50
Verifying : glibc-minimal-langpack-2.34-52.amzn2023.0.2.x86_64 10/50
Verifying : rpm-libs-4.16.1.3-12.amzn2023.0.6.x86_64 11/50
Verifying : rpm-libs-4.16.1.3-12.amzn2023.0.5.x86_64 12/50
Verifying : rpm-build-libs-4.16.1.3-12.amzn2023.0.6.x86_64 13/50
Verifying : rpm-build-libs-4.16.1.3-12.amzn2023.0.5.x86_64 14/50
Verifying : glibc-2.34-52.amzn2023.0.3.x86_64 15/50
Verifying : glibc-2.34-52.amzn2023.0.2.x86_64 16/50
Verifying : libgcc-11.3.1-4.amzn2023.0.3.x86_64 17/50
Verifying : libgcc-11.3.1-4.amzn2023.0.2.x86_64 18/50
Verifying : glibc-common-2.34-52.amzn2023.0.3.x86_64 19/50
Verifying : glibc-common-2.34-52.amzn2023.0.2.x86_64 20/50
Verifying : rpm-sign-libs-4.16.1.3-12.amzn2023.0.6.x86_64 21/50
Verifying : rpm-sign-libs-4.16.1.3-12.amzn2023.0.5.x86_64 22/50
Verifying : openssl-libs-1:3.0.8-1.amzn2023.0.3.x86_64 23/50
Verifying : openssl-libs-1:3.0.8-1.amzn2023.0.1.x86_64 24/50
Verifying : gnupg2-minimal-2.3.7-1.amzn2023.0.4.x86_64 25/50
Verifying : gnupg2-minimal-2.3.7-1.amzn2023.0.3.x86_64 26/50
Verifying : libxml2-2.10.4-1.amzn2023.0.1.x86_64 27/50
Verifying : libxml2-2.10.3-2.amzn2023.0.1.x86_64 28/50
Verifying : curl-minimal-8.0.1-1.amzn2023.x86_64 29/50
Verifying : curl-minimal-7.88.1-1.amzn2023.0.1.x86_64 30/50
Verifying : rpm-4.16.1.3-12.amzn2023.0.6.x86_64 31/50
Verifying : rpm-4.16.1.3-12.amzn2023.0.5.x86_64 32/50
Verifying : libstdc++-11.3.1-4.amzn2023.0.3.x86_64 33/50
Verifying : libstdc++-11.3.1-4.amzn2023.0.2.x86_64 34/50
Verifying : libgomp-11.3.1-4.amzn2023.0.3.x86_64 35/50
Verifying : libgomp-11.3.1-4.amzn2023.0.2.x86_64 36/50
Verifying : keyutils-libs-1.6.3-1.amzn2023.x86_64 37/50
Verifying : keyutils-libs-1.6.1-2.amzn2023.0.2.x86_64 38/50
Verifying : ncurses-libs-6.2-4.20200222.amzn2023.0.4.x86_64 39/50
Verifying : ncurses-libs-6.2-4.20200222.amzn2023.0.3.x86_64 40/50
Verifying : ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch 41/50
Verifying : ca-certificates-2023.2.60-1.0.amzn2023.0.1.noarch 42/50
Verifying : tzdata-2023c-1.amzn2023.0.1.noarch 43/50
Verifying : tzdata-2022g-1.amzn2023.0.1.noarch 44/50
Verifying : amazon-linux-repo-cdn-2023.1.20230628-0.amzn2023.no 45/50
Verifying : amazon-linux-repo-cdn-2023.0.20230315-1.amzn2023.no 46/50
Verifying : system-release-2023.1.20230628-0.amzn2023.noarch 47/50
Verifying : system-release-2023.0.20230315-1.amzn2023.noarch 48/50
Verifying : ncurses-base-6.2-4.20200222.amzn2023.0.4.noarch 49/50
Verifying : ncurses-base-6.2-4.20200222.amzn2023.0.3.noarch 50/50
Upgraded:
amazon-linux-repo-cdn-2023.1.20230628-0.amzn2023.noarch
ca-certificates-2023.2.60-1.0.amzn2023.0.2.noarch
curl-minimal-8.0.1-1.amzn2023.x86_64
glib2-2.74.7-688.amzn2023.0.1.x86_64
glibc-2.34-52.amzn2023.0.3.x86_64
glibc-common-2.34-52.amzn2023.0.3.x86_64
glibc-minimal-langpack-2.34-52.amzn2023.0.3.x86_64
gnupg2-minimal-2.3.7-1.amzn2023.0.4.x86_64
keyutils-libs-1.6.3-1.amzn2023.x86_64
libcap-2.48-2.amzn2023.0.3.x86_64
libcurl-minimal-8.0.1-1.amzn2023.x86_64
libgcc-11.3.1-4.amzn2023.0.3.x86_64
libgomp-11.3.1-4.amzn2023.0.3.x86_64
libstdc++-11.3.1-4.amzn2023.0.3.x86_64
libxml2-2.10.4-1.amzn2023.0.1.x86_64
ncurses-base-6.2-4.20200222.amzn2023.0.4.noarch
ncurses-libs-6.2-4.20200222.amzn2023.0.4.x86_64
openssl-libs-1:3.0.8-1.amzn2023.0.3.x86_64
python3-rpm-4.16.1.3-12.amzn2023.0.6.x86_64
rpm-4.16.1.3-12.amzn2023.0.6.x86_64
rpm-build-libs-4.16.1.3-12.amzn2023.0.6.x86_64
rpm-libs-4.16.1.3-12.amzn2023.0.6.x86_64
rpm-sign-libs-4.16.1.3-12.amzn2023.0.6.x86_64
system-release-2023.1.20230628-0.amzn2023.noarch
tzdata-2023c-1.amzn2023.0.1.noarch
Complete!
bash-5.2#
- Updates in the latest version
-
在此示例中，如果我们启动了 202 3.4.20 24 AL2 03 latest 19 版本的容器，我们将应用 023 版本中可用的更新。在撰写本文时，latest版本为 2023.5.20240708，因此本示例中列出的更新将以该版本为准。
在此示例中，我们将从 2023.4.20 240319 版本的容器镜像开始。
首先，我们从容器注册表中获取此容器镜像。末尾的表示特定版本的图像版本。.1虽然图像版本通常为零，但此示例使用的是图像版本为一个的版本。
$ docker pull public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
2023.4.20240319.1: Pulling from amazonlinux/amazonlinux
6de065fda9a2: Pull complete
Digest: sha256:b4838c4cc9211d966b6ea158dacc9eda7433a16ba94436508c2d9f01f7658b4e
Status: Downloaded newer image for public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
我们现在可以在容器内生成一个外壳，然后从中应用更新。
$ docker run -it public.ecr.aws/amazonlinux/amazonlinux:2023.4.20240319.1
bash-5.2#
该dnf upgrade命令现在用于应用该版本中可用的更新，在撰写本文时，该latest版本是 2023.5. 20 240708。
应用软件包更新是一项特权操作。尽管在容器中运行时通常不需要提升权限，但如果在 Amazon EC2 实例等非容器化环境中运行，则需要以用户身份运行dnf upgrade命令。root这可以使用sudo或su命令来完成。
默认情况下，dnf会要求您确认是否要应用更新。在这个例子中，我们通过使用-y标志来dnf绕过这个提示。
$ dnf -y --releasever=latest update
Amazon Linux 2023 repository 75 MB/s | 25 MB 00:00
Last metadata expiration check: 0:00:04 ago on Mon Jul 22 18:00:10 2024.
Dependencies resolved.
=================================================================================
Package Arch Version Repository Size
=================================================================================
Upgrading:
amazon-linux-repo-cdn noarch 2023.5.20240708-1.amzn2023 amazonlinux 17 k
curl-minimal x86_64 8.5.0-1.amzn2023.0.4 amazonlinux 160 k
dnf noarch 4.14.0-1.amzn2023.0.5 amazonlinux 460 k
dnf-data noarch 4.14.0-1.amzn2023.0.5 amazonlinux 34 k
expat x86_64 2.5.0-1.amzn2023.0.4 amazonlinux 117 k
glibc x86_64 2.34-52.amzn2023.0.10 amazonlinux 1.9 M
glibc-common x86_64 2.34-52.amzn2023.0.10 amazonlinux 295 k
glibc-minimal-langpack x86_64 2.34-52.amzn2023.0.10 amazonlinux 23 k
krb5-libs x86_64 1.21-3.amzn2023.0.4 amazonlinux 758 k
libblkid x86_64 2.37.4-1.amzn2023.0.4 amazonlinux 105 k
libcurl-minimal x86_64 8.5.0-1.amzn2023.0.4 amazonlinux 275 k
libmount x86_64 2.37.4-1.amzn2023.0.4 amazonlinux 132 k
libnghttp2 x86_64 1.59.0-3.amzn2023.0.1 amazonlinux 79 k
libsmartcols x86_64 2.37.4-1.amzn2023.0.4 amazonlinux 62 k
libuuid x86_64 2.37.4-1.amzn2023.0.4 amazonlinux 26 k
openssl-libs x86_64 1:3.0.8-1.amzn2023.0.12 amazonlinux 2.2 M
python3 x86_64 3.9.16-1.amzn2023.0.8 amazonlinux 27 k
python3-dnf noarch 4.14.0-1.amzn2023.0.5 amazonlinux 409 k
python3-libs x86_64 3.9.16-1.amzn2023.0.8 amazonlinux 7.3 M
system-release noarch 2023.5.20240708-1.amzn2023 amazonlinux 28 k
yum noarch 4.14.0-1.amzn2023.0.5 amazonlinux 32 k
Transaction Summary
=================================================================================
Upgrade 21 Packages
Total download size: 14 M
Downloading Packages:
(1/21): amazon-linux-repo-cdn-2023.5.20240708-1. 345 kB/s | 17 kB 00:00
(2/21): dnf-4.14.0-1.amzn2023.0.5.noarch.rpm 6.8 MB/s | 460 kB 00:00
(3/21): dnf-data-4.14.0-1.amzn2023.0.5.noarch.rp 1.6 MB/s | 34 kB 00:00
(4/21): expat-2.5.0-1.amzn2023.0.4.x86_64.rpm 4.6 MB/s | 117 kB 00:00
(5/21): glibc-2.34-52.amzn2023.0.10.x86_64.rpm 38 MB/s | 1.9 MB 00:00
(6/21): glibc-common-2.34-52.amzn2023.0.10.x86_6 8.8 MB/s | 295 kB 00:00
(7/21): glibc-minimal-langpack-2.34-52.amzn2023. 1.7 MB/s | 23 kB 00:00
(8/21): curl-minimal-8.5.0-1.amzn2023.0.4.x86_64 998 kB/s | 160 kB 00:00
(9/21): libblkid-2.37.4-1.amzn2023.0.4.x86_64.rp 4.1 MB/s | 105 kB 00:00
(10/21): krb5-libs-1.21-3.amzn2023.0.4.x86_64.rp 16 MB/s | 758 kB 00:00
(11/21): libmount-2.37.4-1.amzn2023.0.4.x86_64.r 7.9 MB/s | 132 kB 00:00
(12/21): libnghttp2-1.59.0-3.amzn2023.0.1.x86_64 5.6 MB/s | 79 kB 00:00
(13/21): libsmartcols-2.37.4-1.amzn2023.0.4.x86_ 4.4 MB/s | 62 kB 00:00
(14/21): libcurl-minimal-8.5.0-1.amzn2023.0.4.x8 7.1 MB/s | 275 kB 00:00
(15/21): libuuid-2.37.4-1.amzn2023.0.4.x86_64.rp 1.1 MB/s | 26 kB 00:00
(16/21): python3-3.9.16-1.amzn2023.0.8.x86_64.rp 1.5 MB/s | 27 kB 00:00
(17/21): python3-dnf-4.14.0-1.amzn2023.0.5.noarc 19 MB/s | 409 kB 00:00
(18/21): system-release-2023.5.20240708-1.amzn20 1.9 MB/s | 28 kB 00:00
(19/21): yum-4.14.0-1.amzn2023.0.5.noarch.rpm 1.6 MB/s | 32 kB 00:00
(20/21): openssl-libs-3.0.8-1.amzn2023.0.12.x86_ 26 MB/s | 2.2 MB 00:00
(21/21): python3-libs-3.9.16-1.amzn2023.0.8.x86_ 59 MB/s | 7.3 MB 00:00
---------------------------------------------------------------------------------
Total 34 MB/s | 14 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : glibc-common-2.34-52.amzn2023.0.10.x86_64 1/42
Upgrading : glibc-minimal-langpack-2.34-52.amzn2023.0.10.x86_64 2/42
Running scriptlet: glibc-2.34-52.amzn2023.0.10.x86_64 3/42
Upgrading : glibc-2.34-52.amzn2023.0.10.x86_64 3/42
Running scriptlet: glibc-2.34-52.amzn2023.0.10.x86_64 3/42
Upgrading : libuuid-2.37.4-1.amzn2023.0.4.x86_64 4/42
Upgrading : openssl-libs-1:3.0.8-1.amzn2023.0.12.x86_64 5/42
Upgrading : krb5-libs-1.21-3.amzn2023.0.4.x86_64 6/42
Upgrading : libblkid-2.37.4-1.amzn2023.0.4.x86_64 7/42
Running scriptlet: libblkid-2.37.4-1.amzn2023.0.4.x86_64 7/42
Upgrading : expat-2.5.0-1.amzn2023.0.4.x86_64 8/42
Upgrading : python3-3.9.16-1.amzn2023.0.8.x86_64 9/42
Upgrading : python3-libs-3.9.16-1.amzn2023.0.8.x86_64 10/42
Upgrading : libnghttp2-1.59.0-3.amzn2023.0.1.x86_64 11/42
Upgrading : libcurl-minimal-8.5.0-1.amzn2023.0.4.x86_64 12/42
Upgrading : system-release-2023.5.20240708-1.amzn2023.noarch 13/42
Upgrading : amazon-linux-repo-cdn-2023.5.20240708-1.amzn2023.no 14/42
Upgrading : dnf-data-4.14.0-1.amzn2023.0.5.noarch 15/42
Upgrading : python3-dnf-4.14.0-1.amzn2023.0.5.noarch 16/42
Upgrading : dnf-4.14.0-1.amzn2023.0.5.noarch 17/42
Running scriptlet: dnf-4.14.0-1.amzn2023.0.5.noarch 17/42
Upgrading : yum-4.14.0-1.amzn2023.0.5.noarch 18/42
Upgrading : curl-minimal-8.5.0-1.amzn2023.0.4.x86_64 19/42
Upgrading : libmount-2.37.4-1.amzn2023.0.4.x86_64 20/42
Upgrading : libsmartcols-2.37.4-1.amzn2023.0.4.x86_64 21/42
Cleanup : yum-4.14.0-1.amzn2023.0.4.noarch 22/42
Running scriptlet: dnf-4.14.0-1.amzn2023.0.4.noarch 23/42
Cleanup : dnf-4.14.0-1.amzn2023.0.4.noarch 23/42
Running scriptlet: dnf-4.14.0-1.amzn2023.0.4.noarch 23/42
Cleanup : python3-dnf-4.14.0-1.amzn2023.0.4.noarch 24/42
Cleanup : amazon-linux-repo-cdn-2023.4.20240319-1.amzn2023.no 25/42
Cleanup : libmount-2.37.4-1.amzn2023.0.3.x86_64 26/42
Cleanup : curl-minimal-8.5.0-1.amzn2023.0.2.x86_64 27/42
Cleanup : libcurl-minimal-8.5.0-1.amzn2023.0.2.x86_64 28/42
Cleanup : krb5-libs-1.21-3.amzn2023.0.3.x86_64 29/42
Cleanup : libblkid-2.37.4-1.amzn2023.0.3.x86_64 30/42
Cleanup : libnghttp2-1.57.0-1.amzn2023.0.1.x86_64 31/42
Cleanup : libsmartcols-2.37.4-1.amzn2023.0.3.x86_64 32/42
Cleanup : system-release-2023.4.20240319-1.amzn2023.noarch 33/42
Cleanup : dnf-data-4.14.0-1.amzn2023.0.4.noarch 34/42
Cleanup : python3-3.9.16-1.amzn2023.0.6.x86_64 35/42
Cleanup : python3-libs-3.9.16-1.amzn2023.0.6.x86_64 36/42
Cleanup : openssl-libs-1:3.0.8-1.amzn2023.0.11.x86_64 37/42
Cleanup : libuuid-2.37.4-1.amzn2023.0.3.x86_64 38/42
Cleanup : expat-2.5.0-1.amzn2023.0.3.x86_64 39/42
Cleanup : glibc-2.34-52.amzn2023.0.8.x86_64 40/42
Cleanup : glibc-minimal-langpack-2.34-52.amzn2023.0.8.x86_64 41/42
Cleanup : glibc-common-2.34-52.amzn2023.0.8.x86_64 42/42
Running scriptlet: glibc-common-2.34-52.amzn2023.0.8.x86_64 42/42
Verifying : amazon-linux-repo-cdn-2023.5.20240708-1.amzn2023.no 1/42
Verifying : amazon-linux-repo-cdn-2023.4.20240319-1.amzn2023.no 2/42
Verifying : curl-minimal-8.5.0-1.amzn2023.0.4.x86_64 3/42
Verifying : curl-minimal-8.5.0-1.amzn2023.0.2.x86_64 4/42
Verifying : dnf-4.14.0-1.amzn2023.0.5.noarch 5/42
Verifying : dnf-4.14.0-1.amzn2023.0.4.noarch 6/42
Verifying : dnf-data-4.14.0-1.amzn2023.0.5.noarch 7/42
Verifying : dnf-data-4.14.0-1.amzn2023.0.4.noarch 8/42
Verifying : expat-2.5.0-1.amzn2023.0.4.x86_64 9/42
Verifying : expat-2.5.0-1.amzn2023.0.3.x86_64 10/42
Verifying : glibc-2.34-52.amzn2023.0.10.x86_64 11/42
Verifying : glibc-2.34-52.amzn2023.0.8.x86_64 12/42
Verifying : glibc-common-2.34-52.amzn2023.0.10.x86_64 13/42
Verifying : glibc-common-2.34-52.amzn2023.0.8.x86_64 14/42
Verifying : glibc-minimal-langpack-2.34-52.amzn2023.0.10.x86_64 15/42
Verifying : glibc-minimal-langpack-2.34-52.amzn2023.0.8.x86_64 16/42
Verifying : krb5-libs-1.21-3.amzn2023.0.4.x86_64 17/42
Verifying : krb5-libs-1.21-3.amzn2023.0.3.x86_64 18/42
Verifying : libblkid-2.37.4-1.amzn2023.0.4.x86_64 19/42
Verifying : libblkid-2.37.4-1.amzn2023.0.3.x86_64 20/42
Verifying : libcurl-minimal-8.5.0-1.amzn2023.0.4.x86_64 21/42
Verifying : libcurl-minimal-8.5.0-1.amzn2023.0.2.x86_64 22/42
Verifying : libmount-2.37.4-1.amzn2023.0.4.x86_64 23/42
Verifying : libmount-2.37.4-1.amzn2023.0.3.x86_64 24/42
Verifying : libnghttp2-1.59.0-3.amzn2023.0.1.x86_64 25/42
Verifying : libnghttp2-1.57.0-1.amzn2023.0.1.x86_64 26/42
Verifying : libsmartcols-2.37.4-1.amzn2023.0.4.x86_64 27/42
Verifying : libsmartcols-2.37.4-1.amzn2023.0.3.x86_64 28/42
Verifying : libuuid-2.37.4-1.amzn2023.0.4.x86_64 29/42
Verifying : libuuid-2.37.4-1.amzn2023.0.3.x86_64 30/42
Verifying : openssl-libs-1:3.0.8-1.amzn2023.0.12.x86_64 31/42
Verifying : openssl-libs-1:3.0.8-1.amzn2023.0.11.x86_64 32/42
Verifying : python3-3.9.16-1.amzn2023.0.8.x86_64 33/42
Verifying : python3-3.9.16-1.amzn2023.0.6.x86_64 34/42
Verifying : python3-dnf-4.14.0-1.amzn2023.0.5.noarch 35/42
Verifying : python3-dnf-4.14.0-1.amzn2023.0.4.noarch 36/42
Verifying : python3-libs-3.9.16-1.amzn2023.0.8.x86_64 37/42
Verifying : python3-libs-3.9.16-1.amzn2023.0.6.x86_64 38/42
Verifying : system-release-2023.5.20240708-1.amzn2023.noarch 39/42
Verifying : system-release-2023.4.20240319-1.amzn2023.noarch 40/42
Verifying : yum-4.14.0-1.amzn2023.0.5.noarch 41/42
Verifying : yum-4.14.0-1.amzn2023.0.4.noarch 42/42
Upgraded:
amazon-linux-repo-cdn-2023.5.20240708-1.amzn2023.noarch
curl-minimal-8.5.0-1.amzn2023.0.4.x86_64
dnf-4.14.0-1.amzn2023.0.5.noarch
dnf-data-4.14.0-1.amzn2023.0.5.noarch
expat-2.5.0-1.amzn2023.0.4.x86_64
glibc-2.34-52.amzn2023.0.10.x86_64
glibc-common-2.34-52.amzn2023.0.10.x86_64
glibc-minimal-langpack-2.34-52.amzn2023.0.10.x86_64
krb5-libs-1.21-3.amzn2023.0.4.x86_64
libblkid-2.37.4-1.amzn2023.0.4.x86_64
libcurl-minimal-8.5.0-1.amzn2023.0.4.x86_64
libmount-2.37.4-1.amzn2023.0.4.x86_64
libnghttp2-1.59.0-3.amzn2023.0.1.x86_64
libsmartcols-2.37.4-1.amzn2023.0.4.x86_64
libuuid-2.37.4-1.amzn2023.0.4.x86_64
openssl-libs-1:3.0.8-1.amzn2023.0.12.x86_64
python3-3.9.16-1.amzn2023.0.8.x86_64
python3-dnf-4.14.0-1.amzn2023.0.5.noarch
python3-libs-3.9.16-1.amzn2023.0.8.x86_64
system-release-2023.5.20240708-1.amzn2023.noarch
yum-4.14.0-1.amzn2023.0.5.noarch
Complete!
bash-5.2#
要发现 AL2 023 更新，请执行以下一项或多项操作：
-
运行 dnf check-update 命令。这将检查您锁定的 Amazon Linux 版本中是否有任何未应用的更新。如果您仅更新了system-release软件包，移动了实例锁定的存储库版本，但未应用其中任何可用的更新，则可能会显示更新。
-
订阅 Amazon Linux 存储库更新 SNS 主题 (arn:aws:sns:us-east-1:137112412989:amazon-linux-2023-ami-updates)。有关更多信息，请参阅《Amazon Simple Notification Service 开发人员指南》中的订阅 Amazon SNS 主题。
-
定期参阅 AL2023 发行说明。
-
通过以下方式发现新版本使用检查较新的存储库版本 dnf check-release-update.
包含安全更新的 AL2 023 新版本经常发布。请务必及时更新相关的安全补丁。
（安全）更新后自动重启服务
亚马逊 Linux 现在附带了智能重启套餐。 Smart-restart每当使用系统包管理器安装或删除软件包时，都会在系统更新时重新启动 systemd 服务。每当执行时dnf (update|upgrade|downgrade)，都会发生这种情况。
Smart-restart使用来自的needs-restarting软件包dnf-utils和自定义的拒绝列表机制来确定需要重新启动哪些服务以及是否建议重新启动系统。如果建议重新启动系统，则会生成重启提示标记文件 (/run/smart-restart/reboot-hint-marker)。
要安装 smart-restart，请执行以下操作
运行以下命令 DNF 命令（就像你对待任何其他软件包一样）。
$ sudo dnf install smart-restart
安装完成后，后续事务将触发smart-restart逻辑。
拒绝名单
Smart-restart可以指示阻止某些服务重新启动。被封锁的服务不会影响是否需要重启的决定。要阻止其他服务，请添加一个带有后缀-denylist的文件/etc/smart-restart-conf.d/，如以下示例所示。
$ cat /etc/smart-restart-conf.d/custom-denylist
# Some comments
myservice.service
在决定是否需要重新启动时，会读取和评估所有*-denylist文件。
自定义挂钩
除了 denylisting 之外，还smart-restart提供了一种在尝试重启服务之前和之后运行自定义脚本的机制。自定义脚本可用于手动执行准备步骤或将剩余或已完成的重启通知其他组件。
所有/etc/smart-restart-conf.d/带有-pre-restart或后缀的脚本-post-restart都会被执行。如果顺序很重要，请在所有脚本前面加上一个数字以确保执行顺序，如以下示例所示。
$ ls /etc/smart-restart-conf.d/*-pre-restart
001-my-script-pre-restart
002-some-other-script-pre-restart
何时需要重启才能应用安全更新？
在某些情况下，Amazon Linux 需要重启才能应用更新：
-
Linux 内核软件包的更新需要重新启动才能激活包含最新安全更新的新内核。内核livepatching可能允许您在有限的时间内推迟安全更新。详情请咨询023 上的 Kernel Live AL2 补丁。
-
在 M EC2 etal 实例上，Amazon Linux 提供微码更新（通过英特尔的microcode_ctl软件包 CPUs 和 AMD 的amd-ucode-firmware软件包） CPUs。这些微码更新将仅在后续实例重启时激活。对于虚拟化 EC2 实例，底层 AWS Nitro 系统会为您处理微码更新。
-
某些正在运行的 systemd 服务只有在系统完全重启后才能正常运行。该smart-restart机制将通过留下重启提示来通知您此类情况。请参阅 （安全）更新后自动重启服务。
启动已启用最新存储库版本的实例
你可以添加 DNF 向用户数据脚本发出的命令来控制什么 RPM 当亚马逊 Linux AMI 启动时，软件包就会安装在它上。在以下示例中，使用用户数据脚本来确保通过其启动的任何实例都安装了同样的软件包更新。
#!/bin/bash
dnf upgrade --releasever=2023.0.20230210
# Additional setup and install commands below
dnf install httpd php7.4 mysql80
您必须以超级用户（根用户）的身份来运行此脚本。为此，请运行以下命令。
$ sudo sh -c "bash nameofscript.sh"
有关更多信息，请参阅 Amazon EC2 用户指南中的用户数据和 shell 脚本。
您也可以不使用用户数据脚本，而是启动最新的 Amazon Linux AMI 或基于 Amazon Linux AMI 的自定义 AMI。最新的 Amazon Linux AMI 已安装了所有必要的更新，并且被配置为指向特定的存储库版本。
获取软件包支持信息
AL2023 包含许多不同的开源软件项目。这些项目中的每一个都独立于 Amazon Linux 进行管理，并且有不同的发布和 end-of-support时间表。为了向您提供有关这些不同软件包的 Amazon Linux 特定信息，DNF supportinfo插件提供有关软件包的元数据。在以下示例中，dnf
supportinfo 命令返回 glibc 软件包的元数据。
$ sudo dnf supportinfo --pkg glibc
Last metadata expiration check: 0:07:56 ago on Wed Mar 1 23:21:49 2023.
Name : glibc
Version : 2.34-52.amzn2023.0.2
State : installed
Support Status : supported
Support Periods : from 2023-03-15 : supported
: from 2028-03-15 : unsupported
Support Statement : Amazon Linux 2023 End Of Life
Link : https://aws.amazon.com/amazon-linux-ami/faqs/
Other Info : This is the support statement for AL2023. The
...: end of life of Amazon Linux 2023 would be March 2028.
...: From this point, the Amazon Linux 2023 packages (listed
...: below) will no longer, receive any updates from AWS.
Package 支持信息也可在 AL2023 发行说明的支持声明部分中找到。
使用检查较新的存储库版本 dnf check-release-update
在 AL2 023 实例中，你可以使用 DNF 用于管理存储库并应用更新的实用程序 RPM 包裹。可以从 Amazon Linux 存储库获得这些软件包。您可以使用 DNF 命令dnf check-release-update来检查是否有新版本的 DNF 存储库。
AL2默认情况下，023 容器镜像不包含该dnf check-release-update命令。
$ dnf check-release-update
No such command: check-release-update. Please use /usr/bin/dnf --help
It could be a DNF plugin command, try: "dnf install 'dnf-command(check-release-update)'"
运行dnf install 'dnf-command(check-release-update)'时，dnf将安装提供check-release-update命令的软件包，即dnf-plugin-release-notification软件包。在下面的示例中，给出了-q参数dnf以使其具有安静的输出。
$ dnf -y -q install 'dnf-command(check-release-update)'
Installed:
dnf-plugin-release-notification-1.2-1.amzn2023.0.2.noarch
在 Amazon EC2 实例等非容器化环境中，默认包含该check-release-update命令。
$ sudo dnf check-release-update
WARNING:
A newer release of "Amazon Linux" is available.
Available Versions:
Version 2023.0.20230210:
Run the following command to update to 2023.0.20230210:
dnf upgrade --releasever=2023.0.20230210
Release notes:
https://docs.aws.amazon.com/linux/al2023/release-notes/relnotes.html
这将返回所有较新版本的完整列表 DNF 可用的存储库。如果什么都没返回，这意味着 DNF 当前已配置为使用最新的可用版本。当前安装的system-release软件包的版本设置了 releasever DNF 变量。要查看当前存储库版本，请运行以下命令。
$ rpm -q system-release --qf "%{VERSION}\n"
当你跑步的时候 DNF 软件包事务（例如安装、更新或删除命令），则会显示一条警告消息，通知您任何新的存储库版本。例如，如果您将httpd软件包安装在从旧版本 AL2 023 启动的实例上，则会返回以下输出。
$ sudo dnf install httpd -y
Last metadata expiration check: 0:16:52 ago on Wed Mar 1 23:21:49 2023.
Dependencies resolved.
====================================================================
Package Arch Version Repository Size
====================================================================
Installing:
httpd x86_64 2.4.54-3.amzn2023.0.4 amazonlinux 46 k
Installing dependencies:
apr x86_64 1.7.2-2.amzn2023.0.2 amazonlinux 129 k
apr-util x86_64 1.6.3-1.amzn2023.0.1 amazonlinux 98 k
generic-logos-httpd
noarch 18.0.0-12.amzn2023.0.3 amazonlinux 19 k
httpd-core x86_64 2.4.54-3.amzn2023.0.4 amazonlinux 1.3 M
httpd-filesystem noarch 2.4.54-3.amzn2023.0.4 amazonlinux 13 k
httpd-tools x86_64 2.4.54-3.amzn2023.0.4 amazonlinux 80 k
libbrotli x86_64 1.0.9-4.amzn2023.0.2 amazonlinux 315 k
mailcap noarch 2.1.49-3.amzn2023.0.3 amazonlinux 33 k
Installing weak dependencies:
apr-util-openssl x86_64 1.6.3-1.amzn2023.0.1 amazonlinux 17 k
mod_http2 x86_64 1.15.24-1.amzn2023.0.3 amazonlinux 152 k
mod_lua x86_64 2.4.54-3.amzn2023.0.4 amazonlinux 60 k
Transaction Summary
====================================================================
Install 12 Packages
Total download size: 2.3 M
Installed size: 6.8 M
Downloading Packages:
(1/12): apr-util-openssl-1.6.3-1.am 212 kB/s | 17 kB 00:00
(2/12): apr-1.7.2-2.amzn2023.0.2.x8 1.1 MB/s | 129 kB 00:00
(3/12): httpd-core-2.4.54-3.amzn202 8.9 MB/s | 1.3 MB 00:00
(4/12): mod_http2-1.15.24-1.amzn202 1.9 MB/s | 152 kB 00:00
(5/12): apr-util-1.6.3-1.amzn2023.0 1.7 MB/s | 98 kB 00:00
(6/12): mod_lua-2.4.54-3.amzn2023.0 1.4 MB/s | 60 kB 00:00
(7/12): httpd-2.4.54-3.amzn2023.0.4 1.5 MB/s | 46 kB 00:00
(8/12): libbrotli-1.0.9-4.amzn2023. 4.4 MB/s | 315 kB 00:00
(9/12): mailcap-2.1.49-3.amzn2023.0 753 kB/s | 33 kB 00:00
(10/12): httpd-tools-2.4.54-3.amzn2 978 kB/s | 80 kB 00:00
(11/12): httpd-filesystem-2.4.54-3. 210 kB/s | 13 kB 00:00
(12/12): generic-logos-httpd-18.0.0 439 kB/s | 19 kB 00:00
--------------------------------------------------------------------
Total 6.6 MB/s | 2.3 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : apr-1.7.2-2.amzn2023.0.2.x86_64 1/12
Installing : apr-util-openssl-1.6.3-1.amzn2023.0.1. 2/12
Installing : apr-util-1.6.3-1.amzn2023.0.1.x86_64 3/12
Installing : mailcap-2.1.49-3.amzn2023.0.3.noarch 4/12
Installing : httpd-tools-2.4.54-3.amzn2023.0.4.x86_ 5/12
Installing : generic-logos-httpd-18.0.0-12.amzn2023 6/12
Running scriptlet: httpd-filesystem-2.4.54-3.amzn2023.0.4 7/12
Installing : httpd-filesystem-2.4.54-3.amzn2023.0.4 7/12
Installing : httpd-core-2.4.54-3.amzn2023.0.4.x86_6 8/12
Installing : mod_http2-1.15.24-1.amzn2023.0.3.x86_6 9/12
Installing : libbrotli-1.0.9-4.amzn2023.0.2.x86_64 10/12
Installing : mod_lua-2.4.54-3.amzn2023.0.4.x86_64 11/12
Installing : httpd-2.4.54-3.amzn2023.0.4.x86_64 12/12
Running scriptlet: httpd-2.4.54-3.amzn2023.0.4.x86_64 12/12
Verifying : apr-1.7.2-2.amzn2023.0.2.x86_64 1/12
Verifying : apr-util-openssl-1.6.3-1.amzn2023.0.1. 2/12
Verifying : httpd-core-2.4.54-3.amzn2023.0.4.x86_6 3/12
Verifying : mod_http2-1.15.24-1.amzn2023.0.3.x86_6 4/12
Verifying : apr-util-1.6.3-1.amzn2023.0.1.x86_64 5/12
Verifying : mod_lua-2.4.54-3.amzn2023.0.4.x86_64 6/12
Verifying : libbrotli-1.0.9-4.amzn2023.0.2.x86_64 7/12
Verifying : httpd-2.4.54-3.amzn2023.0.4.x86_64 8/12
Verifying : httpd-tools-2.4.54-3.amzn2023.0.4.x86_ 9/12
Verifying : mailcap-2.1.49-3.amzn2023.0.3.noarch 10/12
Verifying : httpd-filesystem-2.4.54-3.amzn2023.0.4 11/12
Verifying : generic-logos-httpd-18.0.0-12.amzn2023 12/12
Installed:
apr-1.7.2-2.amzn2023.0.2.x86_64
apr-util-1.6.3-1.amzn2023.0.1.x86_64
apr-util-openssl-1.6.3-1.amzn2023.0.1.x86_64
generic-logos-httpd-18.0.0-12.amzn2023.0.3.noarch
httpd-2.4.54-3.amzn2023.0.4.x86_64
httpd-core-2.4.54-3.amzn2023.0.4.x86_64
httpd-filesystem-2.4.54-3.amzn2023.0.4.noarch
httpd-tools-2.4.54-3.amzn2023.0.4.x86_64
libbrotli-1.0.9-4.amzn2023.0.2.x86_64
mailcap-2.1.49-3.amzn2023.0.3.noarch
mod_http2-1.15.24-1.amzn2023.0.3.x86_64
mod_lua-2.4.54-3.amzn2023.0.4.x86_64
Complete!
添加、启用或禁用新存储库
仅添加设计用于 AL2 023 的存储库。
虽然为其他发行版设计的存储库现在可以使用，但不能保证它们会继续使用 023 中的任何软件包更新或不是为在 AL2 023 中使用而设计的存储库。 AL2
要从与默认 Amazon Linux 存储库不同的存储库中安装软件包，您需要配置DNF包管理系统以了解存储库的位置
要dnf了解软件包存储库，请将存储库信息添加到/etc/yum.repos.d/目录中该存储库的配置文件中。许多第三方存储库要么提供配置文件内容，要么提供包含配置文件的可安装软件包。
虽然可以直接在/etc/dnf/dnf.conf文件中配置存储库，但不建议这样做。建议在中将每个存储库配置在自己的文件中/etc/yum.repos.d/。
要了解当前启用了哪些存储库，可以运行以下命令：
$ dnf repolist all --verbose
Loaded plugins: builddep, changelog, config-manager, copr, debug, debuginfo-install, download, generate_completion_cache, groups-manager, needs-restarting, playground, release-notification, repoclosure, repodiff, repograph, repomanage, reposync, supportinfo
DNF version: 4.12.0
cachedir: /var/cache/dnf
Last metadata expiration check: 0:00:02 ago on Wed Mar 1 23:40:15 2023.
Repo-id : amazonlinux
Repo-name : Amazon Linux 2023 repository
Repo-status : enabled
Repo-revision : 1677203368
Repo-updated : Fri Feb 24 01:49:28 2023
Repo-pkgs : 12632
Repo-available-pkgs: 12632
Repo-size : 12 G
Repo-mirrors : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/core/mirrors/2023.0.20230222/x86_64/mirror.list
Repo-baseurl : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/core/guids/cf9296325a6c46ff40c775a8e2d632c4c3fd9d9164014ce3304715d61b90ca8e/x86_64/
: (0 more)
Repo-expire : 172800 second(s) (last: Wed Mar 1 23:40:15
: 2023)
Repo-filename : /etc/yum.repos.d/amazonlinux.repo
Repo-id : amazonlinux-debuginfo
Repo-name : Amazon Linux 2023 repository - Debug
Repo-status : disabled
Repo-mirrors : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/core/mirrors/2023.0.20230222/debuginfo/x86_64/mirror.list
Repo-expire : 21600 second(s) (last: unknown)
Repo-filename : /etc/yum.repos.d/amazonlinux.repo
Repo-id : amazonlinux-source
Repo-name : Amazon Linux 2023 repository - Source packages
Repo-status : disabled
Repo-mirrors : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/core/mirrors/2023.0.20230222/SRPMS/mirror.list
Repo-expire : 21600 second(s) (last: unknown)
Repo-filename : /etc/yum.repos.d/amazonlinux.repo
Repo-id : kernel-livepatch
Repo-name : Amazon Linux 2023 Kernel Livepatch repository
Repo-status : disabled
Repo-mirrors : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/kernel-livepatch/mirrors/al2023/x86_64/mirror.list
Repo-expire : 172800 second(s) (last: unknown)
Repo-filename : /etc/yum.repos.d/kernel-livepatch.repo
Repo-id : kernel-livepatch-source
Repo-name : Amazon Linux 2023 Kernel Livepatch repository -
: Source packages
Repo-status : disabled
Repo-mirrors : https://al2023-repos-us-west-2-de612dc2.s3.dualstack.us-west-2.amazonaws.com/kernel-livepatch/mirrors/al2023/SRPMS/mirror.list
Repo-expire : 21600 second(s) (last: unknown)
Repo-filename : /etc/yum.repos.d/kernel-livepatch.repo
Total packages: 12632
如果不添加 --verbose 选项标志，则输出仅包含 Repo-id、Repo-name 和 Repo-status 信息。
将 yum 存储库添加到 /etc/yum.repos.d 目录
-
查找 .repo 文件的位置。在本示例中，.repo 文件位于 https://www.example.com/repository.repo
-
使用 dnf config-manager 命令添加存储库。
$ sudo dnf config-manager --add-repo https://www.example.com/repository.repo
Loaded plugins: priorities, update-motd, upgrade-helper
adding repo from: https://www.example.com/repository.repo
grabbing file https://www.example.com/repository.repo to /etc/yum.repos.d/repository.repo
repository.repo | 4.0 kB 00:00
repo saved to /etc/yum.repos.d/repository.repo
安装存储库后，必须按照以下过程启用存储库。
要在中启用yum存储库/etc/yum.repos.d，请使用带有--enable标志和repository名称的dnf config-manager命令。
$ sudo dnf config-manager --enable repository
要禁用存储库，请使用同样的命令语法，但在命令中将 --enable 替换为 --disable。
使用 cloud-init 添加存储库
除了使用前面的方法添加存储库，您还可以使用 cloud-init 框架添加新的存储库。
要添加新的软件包存储库，建议您使用以下模板。考虑将此文件保存在本地。
#cloud-config
yum_repos:
repository.repo:
baseurl: https://www.example.com/
enabled: true
gpgcheck: true
gpgkey: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EXAMPLE
name: Example Repository
使用 cloud-init 的一个好处是，您可以在配置文件中添加一个 packages: 部分。在该部分中，您可以包括要安装的软件包的名称。您可以安装来自默认存储库或来自您在 cloud-config 文件中添加的新存储库的软件包。
有关 YAML 文件结构的更多具体信息，请参阅《cloud-init 文档》中的添加 YUM 存储库。
设置 YAML 格式文件后，可以在 AWS CLI中在 cloud-init 框架中运行该文件。确保包含 --userdata 选项和 .yml 文件的名称，以便调用所需操作。
$ aws ec2 run-instances \
--image-id \
resolve:ssm:/aws/service/ami-amazon-linux-latest/al2023-ami-kernel-default-x86_64 \
--instance-type m5.xlarge \
--region us-east-1 \
--key-name aws-key-us-east-1 \
--security-group-ids sg-004a7650 \
--user-data file://cloud-config.yml
