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注意点
当前服务器不关机#xff1b;用户可以正常访问#xff1b;由低版本升为高版本#xff1b;只支持编译安装的nginx#xff1b;
升级的原理
在不停掉老进程的情况下#xff0c;启动新进程。老进程负责处理仍然没有处理完成的请求#xff0c;但不接受新请求。…简介
注意点
当前服务器不关机用户可以正常访问由低版本升为高版本只支持编译安装的nginx
升级的原理
在不停掉老进程的情况下启动新进程。老进程负责处理仍然没有处理完成的请求但不接受新请求。新进程接受新的请求。老进程处理完所有请求关闭所有连接后停止。
升级过程中的信号
主进程支持的信号
TERM | INT立刻退出QUIT等待工作进程结束后再退出KILL强制终止进程HUP重新加载配置文件使用新配置文件启动工作进程并逐步关闭旧进程USR1重新打开日志文件USR2启动新的主进程实现热升级WINCH逐步关闭工作进程
工作进程支持的信号
TERM | INT立刻退出QUIT等待工作进程结束后再退出USR1重新打开日志文件
平滑升级过程
升级前准备
检查nginx版本
/usr/local/nginx/sbin/nginx -v#nginx version: nginx/1.12.2记录nginx使用的模块
/usr/local/nginx/sbin/nginx -V# nginx version: nginx/1.12.2
# built by gcc 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
# built with OpenSSL 1.0.2k-fips 26 Jan 2017
# TLS SNI support enabled
# configure arguments: --prefix/usr/local/nginx --usernginx --groupnginx --with-http_stub_status_module --with-http_ssl_module --with-pcre记录nginx的PID文件路径
ll /usr/local/nginx/logs/nginx.pid备份nginx
mkdir -p /data/nginx_bak
tar -cvf /data/nginx_bak/nginx1.12.2.tgz /usr/local/nginx安装新nginx版本
下载nginx
wget https://nginx.org/download/nginx-1.24.0.tar.gz解压nginx文件
tar -zxvf nginx-1.24.0.tar.gz -C /usr/local/安装新nginx
cd /usr/local/nginx-1.24.0/
./configure --prefix/usr/local/nginx --usernginx --groupnginx --with-http_stub_status_module --with-http_ssl_module --with-pcre
#注意这里不能进行make install 操作否则将会被覆盖可能会影响线上业务。
make替换二进制文件
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old
cp /usr/local/nginx-1.24.0/objs/nginx /usr/local/nginx/sbin/#检查新版本nginx
/usr/local/nginx/sbin/nginx -t升级nginx版本
#查看nginx旧版本进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 4732 4731 0 16:04 ? 00:00:00 nginx: worker process
# root 7436 1151 0 16:22 pts/0 00:00:00 grep --colorauto nginx#向主进程发送USR2信号
#(Nginx会启动一个新版本的master进程和工作进程和旧版一起处理请求)
kill -USR2 cat /usr/local/nginx/logs/nginx.pid#查看nginx进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 4732 4731 0 16:04 ? 00:00:00 nginx: worker process
# root 7439 4731 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7442 1151 0 16:24 pts/0 00:00:00 grep --colorauto nginx#向原主进程发送WINCH信号
ll /usr/local/nginx/logs/nginx.pid.oldbin
kill -WINCH cat /usr/local/nginx/logs/nginx.pid.oldbin#查看nginx进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# root 7439 4731 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7451 1151 0 16:29 pts/0 00:00:00 grep --colorauto nginx#向原主机发送QUIT信号
ll /usr/local/nginx/logs/nginx.pid.oldbin
kill -QUIT cat /usr/local/nginx/logs/nginx.pid.oldbin#查看nginx进程
ps -ef | grep nginx
# root 7439 1 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7454 1151 0 16:31 pts/0 00:00:00 grep --colorauto nginx查看nginx
/usr/local/nginx/sbin/nginx -t
#重点检查nginx版本
/usr/local/nginx/sbin/nginx -v
/usr/local/nginx/sbin/nginx -V添加新模块过程
添加前准备
检查nginx版本
/usr/local/nginx/sbin/nginx -v#nginx version: nginx/1.12.2记录nginx使用的模块
/usr/local/nginx/sbin/nginx -V# nginx version: nginx/1.12.2
# built by gcc 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
# built with OpenSSL 1.0.2k-fips 26 Jan 2017
# TLS SNI support enabled
# configure arguments: --prefix/usr/local/nginx --usernginx --groupnginx --with-http_stub_status_module --with-http_ssl_module --with-pcre记录nginx的PID文件路径
ll /usr/local/nginx/logs/nginx.pid备份nginx
mkdir -p /data/nginx_bak
tar -cvf /data/nginx_bak/nginx1.12.2.tgz /usr/local/nginx添加新模块
添加新模块
cd /usr/local/nginx-1.12.2/
./configure --prefix/usr/local/nginx --usernginx --groupnginx --with-http_stub_status_module --with-http_ssl_module --with-pcre --with-http_gzip_static_module
#注意这里不能进行make install 操作否则将会被覆盖可能会影响线上业务。
make替换二进制文件
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old
cp /usr/local/nginx-1.12.2/objs/nginx /usr/local/nginx/sbin/#检查新版本nginx
/usr/local/nginx/sbin/nginx -t平滑替换二进制文件
#查看nginx旧版本进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 4732 4731 0 16:04 ? 00:00:00 nginx: worker process
# root 7436 1151 0 16:22 pts/0 00:00:00 grep --colorauto nginx#向主进程发送USR2信号
#(Nginx会启动一个新版本的master进程和工作进程和旧版一起处理请求)
kill -USR2 cat /usr/local/nginx/logs/nginx.pid#查看nginx进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 4732 4731 0 16:04 ? 00:00:00 nginx: worker process
# root 7439 4731 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7442 1151 0 16:24 pts/0 00:00:00 grep --colorauto nginx#向原主进程发送WINCH信号
ll /usr/local/nginx/logs/nginx.pid.oldbin
kill -WINCH cat /usr/local/nginx/logs/nginx.pid.oldbin#查看nginx进程
ps -ef | grep nginx
# root 4731 1 0 16:04 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# root 7439 4731 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7451 1151 0 16:29 pts/0 00:00:00 grep --colorauto nginx#向原主机发送QUIT信号
ll /usr/local/nginx/logs/nginx.pid.oldbin
kill -QUIT cat /usr/local/nginx/logs/nginx.pid.oldbin#查看nginx进程
ps -ef | grep nginx
# root 7439 1 0 16:23 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
# nginx 7440 7439 0 16:23 ? 00:00:00 nginx: worker process
# root 7454 1151 0 16:31 pts/0 00:00:00 grep --colorauto nginx检查nginx
/usr/local/nginx/sbin/nginx -t
/usr/local/nginx/sbin/nginx -v
#重点检查nginx模块
/usr/local/nginx/sbin/nginx -V
