目录
问题一、error: the HTTP rewrite module requires the PCRE library.
问题二、error: the HTTP gzip module requires the zlib library.
问题三、invalid PID number "" in "/apps/srv/nginx1.18/logs/nginx.pid"
问题四、unknown directive "ssl_certificate"
问题五、open() "/usr/local/nginx/logs/error.log" failed (13: Permission denied)
问题一、error: the HTTP rewrite module requires the PCRE library.
./configure: error: the HTTP rewrite module requires the PCRE library.
You can either disable the module by using --without-http_rewrite_module
option, or install the PCRE library into the system, or build the PCRE library
statically from the source with nginx by using --with-pcre=<path> option.
解决：
yum -y install pcre-devel
截图：
问题二、error: the HTTP gzip module requires the zlib library.
./configure: error: the HTTP gzip module requires the zlib library.
You can either disable the module by using --without-http_gzip_module
option, or install the zlib library into the system, or build the zlib library
statically from the source with nginx by using --with-zlib=<path> option.
解决：
yum install -y zlib-devel
截图：
问题三、invalid PID number "" in "/apps/srv/nginx1.18/logs/nginx.pid"
2021/06/02 14:04:11 [notice] 21603#0: signal process started
2021/06/02 14:04:11 [error] 21603#0: invalid PID number "" in "/apps/srv/nginx1.18/logs/nginx.pid"
解决：
没有找到PID对应的nginx进程，所以，如果我们想重启nginx服务的话是有问题的。
我们可以直接运行如下命令启动nginx服务：
./nginx
而不是使用：
./nginx -s reload
当然还有另外一种可能，就是已经存在nginx服务干扰了新服务启动，我们可以使用如下命令查看当前nginx服务的运行状态：
ps -aux | grep nginx
然后，根据PID，干掉对应的nginx服务，再重新启动nginx服务。?
kill -9 pid
截图：
问题四、unknown directive "ssl_certificate"
nginx: [alert] could not open error log file: open() "/usr/local/nginx/logs/error.log" failed (13: Permission denied)
2021/06/02 14:23:02 [emerg] 21702#0: unknown directive "ssl_certificate" in /etc/nginx/conf.d/test-oss-01.test.cn.conf:21
解决：
比较常见的原因是证书路径不对或者编译nginx过程中没有指定ssl模块。
如果是前者的话，我们可以修改 test-oss-01.test.cn.conf 配置文件中引用的 *.crt 和 *.key 的路径。
如果是后者的话，我们可以使用如下命令设置编译选项，再执行 make 命令重新编译。
./configure --with-http_ssl_module ?//重新添加这个ssl模块
截图：
问题六、open() "/usr/local/nginx/logs/error.log" failed (13: Permission denied)
nginx: [alert] could not open error log file: open() "/usr/local/nginx/logs/error.log" failed (13: Permission denied)
解决：
执行命令前边增加sudo即可