Apache父进程异常退出及SSL会话缓存配置无效问题求助

错误日志内容 #

[Fri Oct 27 16:37:12.693972 2023] [mpm_winnt:crit] [pid 3704:tid 680] AH02538: Child: Parent process exited abruptly. Child process is ending
[Fri Oct 27 16:37:14.696271 2023] [mpm_winnt:notice] [pid 3704:tid 680] AH00364: Child: All worker threads have exited.
[Fri Oct 27 16:37:21.659834 2023] [core:warn] [pid 10588:tid 664] AH00098: pid file D:/xampp/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Fri Oct 27 16:37:21.664832 2023] [ssl:warn] [pid 10588:tid 664] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Oct 27 16:37:21.731866 2023] [mpm_winnt:notice] [pid 10588:tid 664] AH00455: Apache/2.4.39 (Win64) OpenSSL/1.1.1c PHP/7.2.19 configured -- resuming normal operations
[Fri Oct 27 16:37:21.731866 2023] [mpm_winnt:notice] [pid 10588:tid 664] AH00456: Apache Lounge VC15 Server built: May 29 2019 11:22:50
[Fri Oct 27 16:37:21.731866 2023] [core:notice] [pid 10588:tid 664] AH00094: Command line: 'd:\\xampp\\apache\\bin\\httpd.exe -d D:/xampp/apache'
[Fri Oct 27 16:37:21.738807 2023] [mpm_winnt:notice] [pid 10588:tid 664] AH00418: Parent: Created child process 9408
[Fri Oct 27 16:37:22.772445 2023] [ssl:warn] [pid 9408:tid 684] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Oct 27 16:37:22.843425 2023] [mpm_winnt:notice] [pid 9408:tid 684] AH00354: Child: Starting 150 worker threads.

问题描述 #

请问有人知道如何处理上述错误吗？

我尝试过相关的会话缓存配置方案，但仍然无效，相同的错误日志依旧出现。

我已在httpd-ssl.conf中尝试了以下配置：

#   Inter-Process Session Cache:
#   Configure the SSL Session Cache: First the mechanism 
#   to use and second the expiring timeout (in seconds).
#SSLSessionCache "shmcb:/xampp/apache/logs/ssl_scache(512000)"
#SSLSessionCache "shmcb:logs/ssl_scache(512000)"
#SSLSessionCache "shmcb:${SRVROOT}/logs/ssl_scache(512000)"
SSLSessionCache "shmcb:D:/xampp/apache/logs/ssl_scache(512000)"
SSLSessionCacheTimeout  300

解决步骤 #

1. 确认SSL配置文件已被加载 #

检查Apache主配置文件httpd.conf，确保存在未被注释的httpd-ssl.conf加载指令，示例：

Include conf/extra/httpd-ssl.conf

如果路径与实际不符，调整为绝对路径：

Include "D:/xampp/apache/conf/extra/httpd-ssl.conf"

2. 修复异常关闭遗留问题 #

日志中AH00098提示Apache之前异常关闭，按以下步骤处理：

• 完全停止XAMPP中的Apache服务
• 删除D:/xampp/apache/logs/httpd.pid文件
• 重启Apache服务

3. 检查日志目录权限 #

确保Apache进程对D:/xampp/apache/logs/目录有读写权限：

• 右键该目录→「属性」→「安全」
• 为Apache运行用户（通常为SYSTEM或当前登录用户）添加「读写」权限

4. 验证配置语法正确性 #

打开命令提示符，切换到Apache的bin目录：

cd D:/xampp/apache/bin

执行配置检查命令：

httpd.exe -t

若显示Syntax OK则配置语法无误；若有错误，根据提示修正配置。

5. 切换缓存机制 #

如果shmcb机制在Windows环境下仍有问题，尝试改用dbm缓存：

SSLSessionCache "dbm:D:/xampp/apache/logs/ssl_scache"
SSLSessionCacheTimeout 300

注：使用dbm时无需添加括号和大小参数，Apache会自动生成对应缓存文件。

内容的提问来源于stack exchange，提问作者RTLEDev