AWS Spot实例引导失败:已经安装了amazon包

Question

我有一个安装点实例，它必须安装在引导程序上。最近，在依赖关系下载阶段，我面临一个新的问题。

下载事务失败如下：

Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
--------------------------------------------------------------------------------
Total                                               78 MB/s | 131 MB  00:01
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
Transaction couldn't start:
package amazon-ssm-agent-3.1.1080.0-1.x86_64 (which is newer than amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64) is already installed
file /etc/amazon/ssm/README.md from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /etc/amazon/ssm/NOTICE.md from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /etc/amazon/ssm/RELEASENOTES.md from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /etc/amazon/ssm/amazon-ssm-agent.json.template from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/amazon-ssm-agent from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/ssm-agent-worker from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/ssm-cli from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/ssm-document-worker from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/ssm-session-logger from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64
file /usr/bin/ssm-session-worker from install of amazon-ssm-agent-3.0.1124.0-1.amzn2.x86_64 conflicts with file from package amazon-ssm-agent-3.1.1080.0-1.x86_64

...

Redirecting to /bin/systemctl start docker.service
Failed to start docker.service: Unit not found.

显然，由于amazon的两个版本之间的冲突，交易失败了！由于此错误，其他依赖项的安装将中止。

是否可以修复一个版本或避免安装新版本的SSM？

Answer 1

@Riz在评论中提供的解决方案解决了这个问题。

我必须在引导程序中删除ssm：

sudo yum erase amazon-ssm-agent --assumeye && sudo yum update -y
sudo yum install -y docker && sudo service docker start

Answer 2

而不是卸载amazon，您可以跳过它，它应该会自动更新。

sudo yum更新-y --排除=amazon代理

我也遇到了类似的问题，看起来amazon在启动时会自动更新，这可能与yum更新发生冲突。在我的“好”服务器上，yum更新在ssm代理自动更新程序启动之前完成。

我们在ps -aux的末尾执行UserData以显示正在运行的进程，并且在成功启动的服务器上显示/var/lib/amazon/ssm/update/amazon-ssm-agent-updater/3.1.1188.0/updater正在运行。到目前为止，百胜已经结束了。

我更新了我的UserData以将排除在更新之外，之后服务器就没有问题了。在让服务器“稳定”几分钟之后，我检查了版本(yum info amazon-ssm-agent)，它说v3.1.1260.0是本文当前的版本。因此，它以非当前版本启动，然后在没有yum帮助的情况下自动更新到当前版本。