我正在嘗試在運行其他服務的 docker 容器上配置彈性代理。該容器基于 Alpine Linux，但在下載并解壓縮代理后我無法運行 elastic-agent agent 命令：它抱怨“未找到”檔案，而該檔案實際上存在！
這是一個最小的可復制示例
docker run --rm -it alpine sh
# cd /opt
# wget https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-7.14.2-linux-x86_64.tar.gz
# tar xvf elastic-agent-7.14.2-linux-x86_64.tar.gz
# cd elastic-agent-7.14.2-linux-x86_64/
# ./elastic-agent
sh: ./elastic-agent: not found
# ls -la
total 8452
drwxr-xr-x 3 root root 4096 Nov 18 17:38 .
drwxr-xr-x 1 root root 4096 Nov 18 17:38 ..
-rw-r--r-- 1 root root 41 Sep 15 17:00 .build_hash.txt
-rw-r--r-- 1 root root 41 Sep 15 17:00 .elastic-agent.active.commit
-rw-r--r-- 1 root root 13675 Sep 15 16:54 LICENSE.txt
-rw-r--r-- 1 root root 8586842 Sep 15 16:54 NOTICE.txt
-rw-r--r-- 1 root root 866 Sep 15 17:00 README.md
drwxr-xr-x 3 root root 4096 Nov 18 17:38 data
lrwxrwxrwx 1 root root 39 Nov 18 17:38 elastic-agent -> data/elastic-agent-574c21/elastic-agent
-rw-r--r-- 1 root root 9020 Sep 15 16:55 elastic-agent.reference.yml
-rw------- 1 root root 9017 Sep 15 16:55 elastic-agent.yml
# ./data/elastic-agent-574c21/elastic-agent
sh: ./data/elastic-agent-574c21/elastic-agent: not found
我在 x86_64 主機上運行，??可以從內核版本或包存盤庫中看出：
# uname -a
Linux 59ae07b0dca8 5.10.47-linuxkit #1 SMP Sat Jul 3 21:51:47 UTC 2021 x86_64 Linux
# apk update
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/community/x86_64/APKINDEX.tar.gz
v3.14.3-14-g9234faeb0d [https://dl-cdn.alpinelinux.org/alpine/v3.14/main]
v3.14.3-12-g13e0706e2c [https://dl-cdn.alpinelinux.org/alpine/v3.14/community]
OK: 14942 distinct packages available
看起來二進制檔案可以正確鏈接到庫：
# ldd ./data/elastic-agent-574c21/elastic-agent
/lib64/ld-linux-x86-64.so.2 (0x7f1868c2f000)
libpthread.so.0 => /lib64/ld-linux-x86-64.so.2 (0x7f1868c2f000)
libdl.so.2 => /lib64/ld-linux-x86-64.so.2 (0x7f1868c2f000)
libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7f1868c2f000)
它還具有執行權限
# ls -la /usr/local/bin/elastic-agent-7.14.2-linux-x86_64/data/elastic-agent-574c21/
total 57244
drwxr-xr-x 3 root root 4096 Nov 18 17:38 .
drwxr-xr-x 3 root root 4096 Nov 18 17:38 ..
drwxr-xr-x 2 root root 4096 Nov 18 17:38 downloads
-rwxr-xr-x 1 root root 58603536 Sep 15 17:00 elastic-agent
strace 似乎也沒有幫助
# strace -f ./elastic-agent
execve("./elastic-agent", ["./elastic-agent"], 0x7fff9e17bee8 /* 7 vars */) = -1 ENOENT (No such file or directory)
strace: exec: No such file or directory
exited with 1
我錯過了什么嗎？在某些情況下，Alpine 能否阻止二進制檔案啟動？
謝謝你的幫助！
uj5u.com熱心網友回復：
問題似乎是elastic-agent您下載的編譯版本需要 libc。Alpine linux 使用 muslc。
可以使用https://stackoverflow.com/a/38433396/5666087在 alpine 中安裝 glibc 。然后elastic-agent似乎作業。
FROM alpine
WORKDIR /opt
RUN wget -qO - https://artifacts.elastic.co/downloads/beats/elastic-agent/elastic-agent-7.14.2-linux-x86_64.tar.gz \
| tar xz
# Add glibc
RUN wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub \
&& wget -q https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.28-r0/glibc-2.28-r0.apk \
&& apk add glibc-2.28-r0.apk \
&& rm glibc-2.28-r0.apk
并運行生成的影像（假設它名為elastic）：
docker run --rm -it elastic /opt/elastic-agent-7.14.2-linux-x86_64/elastic-agent
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