调查Apache Web服务器

如果你在网上购买了一台VPS或专用服务器，通常服务提供商都已经在上面安装了Web服务器软件，在大多数情况下，该服务器软件会是Apache httpd Web服务器。如果你正接手诊断一台Apache Web服务器的问题......这时候你最需要知道的，是Web服务器软件的版本及运行时信息。使用如下命令可以获取你想要的信息。

1、服务器的版本:

# httpd -v

样例输出:

Server version: Apache/2.2.3Server built:   Oct 28 2008 07:22:45

2、哪些模块在编译时被编译进了该服务器

# httpd -l

3、服务器在运行时已加载的静态和动态模块

# httpd -M

样例输出:

Loaded Modules: core_module (static) mpm_prefork_module (static) http_module (static) so_module (static) auth_basic_module (shared) auth_digest_module (shared) authn_file_module (shared) authn_alias_module (shared) authn_anon_module (shared) authn_dbm_module (shared) authn_default_module (shared) authz_host_module (shared) authz_user_module (shared) authz_owner_module (shared) authz_groupfile_module (shared) authz_dbm_module (shared) authz_default_module (shared) ldap_module (shared) authnz_ldap_module (shared) include_module (shared) log_config_module (shared) logio_module (shared) env_module (shared) ext_filter_module (shared) mime_magic_module (shared) expires_module (shared) deflate_module (shared) headers_module (shared) usertrack_module (shared) setenvif_module (shared) mime_module (shared) dav_module (shared) status_module (shared) autoindex_module (shared) info_module (shared) dav_fs_module (shared) vhost_alias_module (shared) negotiation_module (shared) dir_module (shared) actions_module (shared) speling_module (shared) userdir_module (shared) alias_module (shared) rewrite_module (shared) proxy_module (shared) proxy_balancer_module (shared) proxy_ftp_module (shared) proxy_http_module (shared) proxy_connect_module (shared) cache_module (shared) suexec_module (shared) disk_cache_module (shared) file_cache_module (shared) mem_cache_module (shared) cgi_module (shared) version_module (shared) chroot_module (shared) perl_module (shared) php5_module (shared) proxy_ajp_module (shared) python_module (shared)Syntax OK

4、服务器版本及编译时的编译参数

# httpd -V

样例输出:

Server version: Apache/2.2.3Server built:   Oct 28 2008 07:22:45Server's Module Magic Number: 20051115:3Server loaded:  APR 1.2.7, APR-Util 1.2.7Compiled using: APR 1.2.7, APR-Util 1.2.7Architecture:   64-bitServer MPM:     Prefork  threaded:     no    forked:     yes (variable process count)Server compiled with.... -D APACHE_MPM_DIR="server/mpm/prefork" -D APR_HAS_SENDFILE -D APR_HAS_MMAP -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled) -D APR_USE_SYSVSEM_SERIALIZE -D APR_USE_PTHREAD_SERIALIZE -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT -D APR_HAS_OTHER_CHILD -D AP_HAVE_RELIABLE_PIPED_LOGS -D DYNAMIC_MODULE_LIMIT=128 -D HTTPD_ROOT="/etc/httpd" -D SUEXEC_BIN="/usr/sbin/suexec" -D DEFAULT_PIDLOG="logs/httpd.pid" -D DEFAULT_SCOREBOARD="logs/apache_runtime_status" -D DEFAULT_LOCKFILE="logs/accept.lock" -D DEFAULT_ERRORLOG="logs/error_log" -D AP_TYPES_CONFIG_FILE="conf/mime.types" -D SERVER_CONFIG_FILE="conf/httpd.conf"  

5、如果你对httpd.conf配置文件做了修改，应该对你的修改做语法的正确性检查:

# httpd -t