AWS CodeBuild 本地缓存无法实际缓存?
Posted
技术标签:
【中文标题】AWS CodeBuild 本地缓存无法实际缓存?【英文标题】:AWS CodeBuild local cache failing to actually cache? 【发布时间】:2020-03-06 16:31:38 【问题描述】:我一直在尝试让 AWS CodeBuild 的本地缓存正常工作,但在我的一生中,我什至无法让最基本的缓存正常工作。我的最终目标是缓存 Gradle 工件,正如 here 所讨论的那样。
但是因为我无法让它工作,我尝试了一个更简单的测试,我尝试使用文件counter.txt
缓存目录/root/foo
,我会在每次构建时递增。我的期望是,如果我在彼此的几分钟内运行后续构建,我会在日志中看到“2”、“3”等。但现实情况是,尽管建立了符号链接,但下一个构建永远不会看到以前的 counter.txt
文件,这表明我有些东西非常损坏。
谁能确认他们的本地缓存确实在 CodeBuild 中工作?我开始怀疑该功能目前是否已损坏!还是我完全误解了它应该做什么?
buildspec.yml:
version: 0.2
phases:
install:
runtime-versions:
java: corretto8
build:
commands:
- pwd
- ls -l /root/
- ls -l /root/foo/
- ./cache-test.sh
- ls -l /root/
- ls -l /root/foo/
cache:
paths:
- '/root/foo/*'
cache-test.sh:
#!/bin/bash
if [ -d "/root/foo" ]; then
C=$(cat /root/foo/count.txt)
C=$((C + 1))
echo "*********************************"
echo "*********************************"
echo "Incrementing counter to $C"
echo $C > /root/foo/count.txt
echo "*********************************"
echo "*********************************"
else
mkdir /root/foo
echo "*********************************"
echo "*********************************"
echo "File not found, starting count at 1"
echo "*********************************"
echo "*********************************"
echo 1 > /root/foo/count.txt
fi
CodeBuild 输出:(即使在快速连续执行时输出相同)
[Container] 2019/11/10 22:35:08 Waiting for agent ping
[Container] 2019/11/10 22:35:10 Waiting for DOWNLOAD_SOURCE
[Container] 2019/11/10 22:35:10 Phase is DOWNLOAD_SOURCE
[Container] 2019/11/10 22:35:10 CODEBUILD_SRC_DIR=/codebuild/output/src905503483/src
[Container] 2019/11/10 22:35:10 YAML location is /codebuild/output/src905503483/src/buildspec.yml
[Container] 2019/11/10 22:35:10 No commands found for phase name: INSTALL
[Container] 2019/11/10 22:35:10 Processing environment variables
[Container] 2019/11/10 22:35:10 Moving to directory /codebuild/output/src905503483/src
[Container] 2019/11/10 22:35:10 MkdirAll: /codebuild/local-cache/custom/de68c9f22ae028d4e4dfb0d11bbb481053d28b1373db0d6a56ebee0416bf13b2/root/foo
[Container] 2019/11/10 22:35:10 Symlinking: /root/foo => /codebuild/local-cache/custom/de68c9f22ae028d4e4dfb0d11bbb481053d28b1373db0d6a56ebee0416bf13b2/root/foo
[Container] 2019/11/10 22:35:10 Registering with agent
[Container] 2019/11/10 22:35:10 Phases found in YAML: 2
[Container] 2019/11/10 22:35:10 BUILD: 6 commands
[Container] 2019/11/10 22:35:10 INSTALL: 0 commands
[Container] 2019/11/10 22:35:10 Phase complete: DOWNLOAD_SOURCE State: SUCCEEDED
[Container] 2019/11/10 22:35:10 Phase context status code: Message:
[Container] 2019/11/10 22:35:11 Entering phase INSTALL
[Container] 2019/11/10 22:35:11 Running command echo "Installing corretto(OpenJDK) version 8 ..."
Installing corretto(OpenJDK) version 8 ...
[Container] 2019/11/10 22:35:11 Running command export JAVA_HOME="$JAVA_8_HOME"
[Container] 2019/11/10 22:35:11 Running command export JRE_HOME="$JRE_8_HOME"
[Container] 2019/11/10 22:35:11 Running command export JDK_HOME="$JDK_8_HOME"
[Container] 2019/11/10 22:35:11 Running command for tool_path in "$JAVA_8_HOME"/bin/* "$JRE_8_HOME"/bin/*;
do tool=`basename "$tool_path"`;
if [ $tool != 'java-rmi.cgi' ];
then
rm -f /usr/bin/$tool /var/lib/alternatives/$tool \
&& update-alternatives --install /usr/bin/$tool $tool $tool_path 20000;
fi;
done
[Container] 2019/11/10 22:35:11 Phase complete: INSTALL State: SUCCEEDED
[Container] 2019/11/10 22:35:11 Phase context status code: Message:
[Container] 2019/11/10 22:35:11 Entering phase PRE_BUILD
[Container] 2019/11/10 22:35:11 Phase complete: PRE_BUILD State: SUCCEEDED
[Container] 2019/11/10 22:35:11 Phase context status code: Message:
[Container] 2019/11/10 22:35:11 Entering phase BUILD
[Container] 2019/11/10 22:35:11 Running command pwd
/codebuild/output/src905503483/src
[Container] 2019/11/10 22:35:11 Running command ls -l /root/
total 4
lrwxrwxrwx 1 root root 103 Nov 10 22:35 foo -> /codebuild/local-cache/custom/de68c9f22ae028d4e4dfb0d11bbb481053d28b1373db0d6a56ebee0416bf13b2/root/foo
[Container] 2019/11/10 22:35:11 Running command ls -l /root/foo/
total 0
[Container] 2019/11/10 22:35:11 Running command ./cache-test.sh
cat: /root/foo/count.txt: No such file or directory
*********************************
*********************************
Incrementing counter to 1
*********************************
*********************************
[Container] 2019/11/10 22:35:11 Running command ls -l /root/
total 4
lrwxrwxrwx 1 root root 103 Nov 10 22:35 foo -> /codebuild/local-cache/custom/de68c9f22ae028d4e4dfb0d11bbb481053d28b1373db0d6a56ebee0416bf13b2/root/foo
[Container] 2019/11/10 22:35:11 Running command ls -l /root/foo/
total 4
-rw-r--r-- 1 root root 2 Nov 10 22:35 count.txt
[Container] 2019/11/10 22:35:11 Phase complete: BUILD State: SUCCEEDED
[Container] 2019/11/10 22:35:11 Phase context status code: Message:
[Container] 2019/11/10 22:35:11 Entering phase POST_BUILD
[Container] 2019/11/10 22:35:11 Phase complete: POST_BUILD State: SUCCEEDED
[Container] 2019/11/10 22:35:11 Phase context status code: Message:
CodeBuild 项目 JSON:
"projects": [
"name": "test-project",
"arn": "arn:aws:codebuild:us-east-2:xxx:project/xxx",
"source":
"type": "CODEPIPELINE",
"insecureSsl": false
,
"secondarySourceVersions": [],
"artifacts":
"type": "CODEPIPELINE",
"name": "test-project",
"packaging": "NONE",
"encryptionDisabled": false
,
"secondaryArtifacts": [],
"cache":
"type": "LOCAL",
"modes": [
"LOCAL_SOURCE_CACHE",
"LOCAL_CUSTOM_CACHE"
]
,
"environment":
"type": "LINUX_CONTAINER",
"image": "aws/codebuild/amazonlinux2-x86_64-standard:1.0",
"computeType": "BUILD_GENERAL1_SMALL",
"environmentVariables": [],
"privilegedMode": false,
"imagePullCredentialsType": "CODEBUILD"
,
"serviceRole": "arn:aws:iam::xxx:role/service-role/xxx",
"timeoutInMinutes": 60,
"queuedTimeoutInMinutes": 480,
"encryptionKey": "arn:aws:kms:us-east-2:xxx:alias/aws/s3",
"tags": [],
"created": 1573364156.631,
"lastModified": 1573423155.674,
"badge":
"badgeEnabled": false
,
"logsConfig":
"cloudWatchLogs":
"status": "ENABLED",
"groupName": "xxx",
"streamName": "xxx"
,
"s3Logs":
"status": "DISABLED",
"encryptionDisabled": false
],
"projectsNotFound": []
【问题讨论】:
看来我不是唯一一个:forums.aws.amazon.com/thread.jspa?threadID=312569&tstart=0 【参考方案1】:文档并不完全清楚,但 AWS CodeBuild 本地缓存可以only cache directories(截至撰写本文时)。这有点令人困惑,因为 AWS CodeBuild 构建规范 specification allows the path to be individual files or a wildcard,但实际上指定文件会产生错误。
Unable to initialize cache download: only directories can be cached locally: ...
在您的示例中,您使用将缓存指定为
cache:
paths:
- '/root/foo/*'
其中 * 将引用 foo 中的所有单个文件和文件夹,但只会缓存文件夹。
指定整个目录应该可以工作
cache:
paths:
- /root/foo/
【讨论】:
【参考方案2】:我一直在尝试让缓存自己工作,但效果有限。
并非来自任何公共来源,但以下是一些观察结果:
缓存只有在构建时间超过 5 分钟时才可用。
如果新构建成功放置在同一构建主机上,则可以使用缓存。
如果新构建在上次构建的 5-15 分钟内运行,则可以使用缓存。缓存可能会根据上次构建时间保持可用,最长为 15 分钟。
尽管构建时间超过 5 分钟,但缓存可能并不总是有效,这可能是因为构建放置在不同的构建主机上。
此外,如果缓存将新构建加速到 5 分钟以下,则不会缓存该构建,从而导致后续未命中。
虽然我相信 CodeBuild 工程师有充分的理由以这种方式设计它,但在我看来,上述限制使这种本地缓存功能的使用受到了限制。
【讨论】:
超级有趣的观察。谢谢分享! 谢谢。如果构建之间的时间少于 15 分钟,我还经历过缓存消失。就我而言,它使缓存毫无意义。 AWS 似乎没有在任何地方记录这一点。 AWS Codebuild 工程师已在此处确认本地缓存上有一个 TTL ***.com/a/56711832/4985580以上是关于AWS CodeBuild 本地缓存无法实际缓存?的主要内容,如果未能解决你的问题,请参考以下文章
Puppeteer 无法在 AWS CodeBuild 上运行 Chrome
无法将更改从 AWS CodeBuild 推送到 AWS CodeCommit
无法在 AWS CodeBuild 映像中使用 amazon-linux-extras
ImportError:无法从 AWS CodeBuild 中的“botocore.docs.bcdoc”导入名称“docevents”