1、問題現象
服務器nginx配置SSL證書后啟動報錯：
nginx: [emerg] the "ssl" parameter requires ngx_http_ssl_module in /usr/local/nginx/conf/nginx.conf:240
2、問題分析
原因：nginx缺少http_ssl_module模塊，編譯安裝的時候帶上–with-http_ssl_module配置就行了，但是現在的情況是我的nginx已經安裝過了，怎么添加模塊？以我的nginx為例子
①nginx的安裝目錄是/usr/local/nginx這個目錄，
②我的源碼包在/usr/local/nginx-1.19.10目錄，根據你自己實際情況對應自己的目錄
3、解決過程
注:
1、如果是使用yum 安裝等方式，找不到源碼包，需要下載當前安裝相同版本的源碼包：
wget http://nginx.org/download/nginx-1.8.0.tar.gz
使用nginx -V查詢當前Nginx的編譯配置信息，configure arguments: 后面為當前運行Nginx的配置信息
(base) [root@iZxpl4sxxnloovZ nginx-1.8.0]# nginx -V nginx version: nginx/1.8.0 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) configure arguments: --prefix=/usr/local/nginx
2、 切換到源碼目錄執行如下代碼：
./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
結果如下：
[root@llc nginx-1.19.10]# ./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
checking for OS
+ Linux 3.10.0-1127.el7.x86_64 x86_64
checking for C compiler ... found
+ using GNU C compiler
+ gcc version: 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
checking for gcc -pipe switch ... found
checking for -Wl,-E switch ... found
checking for gcc builtin atomic operations ... found
checking for C99 variadic macros ... found
checking for gcc variadic macros ... found
checking for gcc builtin 64 bit byteswap ... found
checking for unistd.h ... found
checking for inttypes.h ... found
checking for limits.h ... found
checking for sys/filio.h ... not found
checking for sys/param.h ... found
checking for sys/mount.h ... found
checking for sys/statvfs.h ... found
checking for crypt.h ... found
checking for Linux specific features
checking for epoll ... found
checking for EPOLLRDHUP ... found
checking for EPOLLEXCLUSIVE ... not found
checking for eventfd() ... found
checking for O_PATH ... found
checking for sendfile() ... found
checking for sendfile64() ... found
checking for sys/prctl.h ... found
checking for prctl(PR_SET_DUMPABLE) ... found
checking for prctl(PR_SET_KEEPCAPS) ... found
checking for capabilities ... found
checking for crypt_r() ... found
checking for sys/vfs.h ... found
checking for nobody group ... found
checking for poll() ... found
checking for /dev/poll ... not found
checking for kqueue ... not found
checking for crypt() ... not found
checking for crypt() in libcrypt ... found
checking for F_READAHEAD ... not found
checking for posix_fadvise() ... found
checking for O_DIRECT ... found
checking for F_NOCACHE ... not found
checking for directio() ... not found
checking for statfs() ... found
checking for statvfs() ... found
checking for dlopen() ... not found
checking for dlopen() in libdl ... found
checking for sched_yield() ... found
checking for sched_setaffinity() ... found
checking for SO_SETFIB ... not found
checking for SO_REUSEPORT ... found
checking for SO_ACCEPTFILTER ... not found
checking for SO_BINDANY ... not found
checking for IP_TRANSPARENT ... found
checking for IP_BINDANY ... not found
checking for IP_BIND_ADDRESS_NO_PORT ... found
checking for IP_RECVDSTADDR ... not found
checking for IP_SENDSRCADDR ... not found
checking for IP_PKTINFO ... found
checking for IPV6_RECVPKTINFO ... found
checking for TCP_DEFER_ACCEPT ... found
checking for TCP_KEEPIDLE ... found
checking for TCP_FASTOPEN ... found
checking for TCP_INFO ... found
checking for accept4() ... found
checking for int size ... 4 bytes
checking for long size ... 8 bytes
checking for long long size ... 8 bytes
checking for void * size ... 8 bytes
checking for uint32_t ... found
checking for uint64_t ... found
checking for sig_atomic_t ... found
checking for sig_atomic_t size ... 4 bytes
checking for socklen_t ... found
checking for in_addr_t ... found
checking for in_port_t ... found
checking for rlim_t ... found
checking for uintptr_t ... uintptr_t found
checking for system byte ordering ... little endian
checking for size_t size ... 8 bytes
checking for off_t size ... 8 bytes
checking for time_t size ... 8 bytes
checking for AF_INET6 ... found
checking for setproctitle() ... not found
checking for pread() ... found
checking for pwrite() ... found
checking for pwritev() ... found
checking for strerrordesc_np() ... not found
checking for sys_nerr ... found
checking for localtime_r() ... found
checking for clock_gettime(CLOCK_MONOTONIC) ... found
checking for posix_memalign() ... found
checking for memalign() ... found
checking for mmap(MAP_ANON|MAP_SHARED) ... found
checking for mmap("/dev/zero", MAP_SHARED) ... found
checking for System V shared memory ... found
checking for POSIX semaphores ... not found
checking for POSIX semaphores in libpthread ... found
checking for struct msghdr.msg_control ... found
checking for ioctl(FIONBIO) ... found
checking for ioctl(FIONREAD) ... found
checking for struct tm.tm_gmtoff ... found
checking for struct dirent.d_namlen ... not found
checking for struct dirent.d_type ... found
checking for sysconf(_SC_NPROCESSORS_ONLN) ... found
checking for sysconf(_SC_LEVEL1_DCACHE_LINESIZE) ... found
checking for openat(), fstatat() ... found
checking for getaddrinfo() ... found
checking for PCRE library ... found
checking for PCRE JIT support ... found
checking for OpenSSL library ... found
checking for zlib library ... found
creating objs/Makefile
Configuration summary
+ using system PCRE library
+ using system OpenSSL library
+ using system zlib library
nginx path prefix: "/usr/local/nginx"
nginx binary file: "/usr/local/nginx/sbin/nginx"
nginx modules path: "/usr/local/nginx/modules"
nginx configuration prefix: "/usr/local/nginx/conf"
nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
nginx pid file: "/usr/local/nginx/logs/nginx.pid"
nginx error log file: "/usr/local/nginx/logs/error.log"
nginx http access log file: "/usr/local/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
3、編譯 : make (這里不要進行make install，否則就是覆蓋安裝)
[root@llc nginx-1.19.10]# make
4、 備份原來nginx配置文件
cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.bak
5、保證nginx是關閉狀態
nginx -s stop
如果無法關閉，用kill命令強制殺死進程
6、復制剛編譯生成的配置覆蓋原有的配置
cp ./objs/nginx /usr/local/nginx/sbin/
7、啟動nginx : nginx
完成，最后正常啟動，訪問也都正常。