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解决 svn: E175002: Unexpected HTTP status 502 'Bad Gateway' 错误

2025-03-31 12:25:00
丁国栋
原创 25
摘要：本文记录如何解决 svn: E175002: Unexpected HTTP status 502 'Bad Gateway' 的问题。

使用Nginx Ingress 代理 Apache2 + dav_svn 的 Subversion，Nginx Ingress 使用 https 协议，Apache2 使用 http 协议访问。当使用svn move操作后执行svn commit会触发如下错误：

svn: E175002: Commit failed (details follow):
svn: E175002: Unexpected HTTP status 502 'Bad Gateway' on '/REPO_NAME/!svn/rvr/REVISION_ID/DIR_NAME'

在Apache2中调试，使用 LogLevel debug 可以看到 svn模块和authz模块的报错。

完整的一次svn commit日志

10.8.17.9 - - [31/Mar/2025:13:27:33 +0800] "OPTIONS /example_svn_repo HTTP/1.1" 401 584 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:36 +0800] "OPTIONS /example_svn_repo HTTP/1.1" 401 584 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:40 +0800] "OPTIONS /example_svn_repo HTTP/1.1" 200 1960 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:40 +0800] "OPTIONS /example_svn_repo HTTP/1.1" 200 1060 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:40 +0800] "OPTIONS /example_svn_repo HTTP/1.1" 200 1960 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:40 +0800] "POST /example_svn_repo/!svn/me HTTP/1.1" 201 117 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.9 - dingguodong [31/Mar/2025:13:27:40 +0800] "COPY /example_svn_repo/!svn/rvr/33/testdir2 HTTP/1.1" 502 441 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"
10.8.17.8 - dingguodong [31/Mar/2025:13:27:40 +0800] "DELETE /example_svn_repo/!svn/txn/33-1l HTTP/1.1" 204 80 "-" "SVN/1.14.3 (x86_64-pc-linux-gnu) serf/1.3.10"

主要访问日志：

"COPY /REPO_NAME/!svn/rvr/REVISION_ID/path/to/file HTTP/1.1" 502 441 "-" "SVN/1.14.5 (x64-microsoft-windows) serf/1.3.10"
"DELETE /REPO_NAME/!svn/txn/REVISION_ID-12 HTTP/1.1" 204 80 "-" "SVN/1.14.5 (x64-microsoft-windows) serf/1.3.10"
错误日志： 
[Mon Mar 31 13:27:33.527369 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:33.528827 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:33.528838 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:33.528841 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:33.528843 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:36.597175 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:36.597196 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:36.597892 2025] [auth_basic:error] [pid 4409] [client 10.8.17.9:28814] AH01617: user dingguodong: authentication failure for "/example_svn_repo": Password Mismatch
[Mon Mar 31 13:27:40.215191 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.215212 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.215766 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.215786 2025] [authz_svn:info] [pid 4409] [client 10.8.17.9:28814] Access granted: 'dingguodong' OPTIONS example_svn_repo:/
[Mon Mar 31 13:27:40.222931 2025] [deflate:debug] [pid 4409] mod_deflate.c(869): [client 10.8.17.9:28814] AH01384: Zlib: Compressed 190 to 131 : URL /example_svn_repo
[Mon Mar 31 13:27:40.243584 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.243591 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.244041 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.244047 2025] [authz_svn:info] [pid 4409] [client 10.8.17.9:28814] Access granted: 'dingguodong' OPTIONS example_svn_repo:/
[Mon Mar 31 13:27:40.244478 2025] [deflate:debug] [pid 4409] mod_deflate.c(869): [client 10.8.17.9:28814] AH01384: Zlib: Compressed 97 to 78 : URL /example_svn_repo
[Mon Mar 31 13:27:40.264584 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.264591 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.265041 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.265047 2025] [authz_svn:info] [pid 4409] [client 10.8.17.9:28814] Access granted: 'dingguodong' OPTIONS example_svn_repo:/
[Mon Mar 31 13:27:40.265501 2025] [deflate:debug] [pid 4409] mod_deflate.c(869): [client 10.8.17.9:28814] AH01384: Zlib: Compressed 190 to 131 : URL /example_svn_repo
[Mon Mar 31 13:27:40.286109 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.286117 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.286550 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.286554 2025] [authz_svn:info] [pid 4409] [client 10.8.17.9:28814] Access granted: 'dingguodong' POST example_svn_repo:
[Mon Mar 31 13:27:40.358063 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.358071 2025] [authz_core:debug] [pid 4409] mod_authz_core.c(815): [client 10.8.17.9:28814] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.358539 2025] [authz_svn:debug] [pid 4409] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.9:28814] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.358544 2025] [authz_svn:info] [pid 4409] [client 10.8.17.9:28814] Access granted: 'dingguodong' COPY example_svn_repo:/testdir2 example_svn_repo:/testdir
[Mon Mar 31 13:27:40.442079 2025] [authz_core:debug] [pid 4410] mod_authz_core.c(815): [client 10.8.17.8:43912] AH01626: authorization result of Require valid-user : denied (no authenticated user yet)
[Mon Mar 31 13:27:40.442097 2025] [authz_core:debug] [pid 4410] mod_authz_core.c(815): [client 10.8.17.8:43912] AH01626: authorization result of <RequireAny>: denied (no authenticated user yet)
[Mon Mar 31 13:27:40.442619 2025] [authz_svn:debug] [pid 4410] ../subversion/mod_authz_svn/mod_authz_svn.c(485): [client 10.8.17.8:43912] Path to authz file is /data/svn/example-subdomain/auth/authz
[Mon Mar 31 13:27:40.443149 2025] [authz_svn:info] [pid 4410] [client 10.8.17.8:43912] Access granted: 'dingguodong' DELETE example_svn_repo:

原本以为是因为Nginx Ingress有多个副本，请求到Apache2时的请求是来自不同的Pod，即$remote_addr不一样导致的，后来被证明不是这个原因。

解决办法：

先使Apache2支持headers模块，执行 a2enmod headers 

在虚拟主机配置中，与 ServerName 同级的配置项中添加以下配置：

RequestHeader edit Destination ^https http early
模板如下： 
  <VirtualHost *:80>
    ServerName  {{SUB_DOMAIN}}.svn.{{TOP_DOMAIN}}
    DocumentRoot /data/svn/{{SUB_DOMAIN}}
    RequestHeader edit Destination ^https http early
    <Location />
      AuthType Basic
      AuthName "{{APP_DOMAIN}} svn"
      AuthUserFile /data/svn/{{SUB_DOMAIN}}/auth/htpasswd
      Require valid-user
      DAV svn
      SVNParentPath /data/svn/{{SUB_DOMAIN}}/svn
      SVNListParentPath on
      AuthzSVNAccessFile /data/svn/{{SUB_DOMAIN}}/auth/authz
    </Location>
    ErrorLog  /dev/stderr
    CustomLog /dev/stdout combined
  </VirtualHost>
执行 apache2ctl graceful 重新加载配置或者重启Apache2服务即可。


参考链接：https://stackoverflow.com/questions/49942606/cannot-commit-jar-file-to-svn-after-merge-502-bad-gateway

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