nginx的平滑升级

最新推荐文章于 2025-05-14 17:22:53 发布

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最新推荐文章于 2025-05-14 17:22:53 发布

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分类专栏： linux web

本文链接：https://blog.youkuaiyun.com/weixin_46470342/article/details/108059434

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当前版本

[root@nginx ~]# nginx -V
nginx version: nginx/1.15.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/opt/data/nginx --with-http_stub_status_module --with-http_ssl_module --with-stream

准备新版本
地址：http://nginx.org/download/

[root@nginx ~]# wget http://nginx.org/download/nginx-1.19.0.tar.gz

备份旧版本信息

[root@nginx ~]# mv /opt/data/nginx/sbin/nginx{,.bak}
[root@nginx ~]# cp -rf /etc/nginx/ /etc/nginx.back

打开一个测试机器，不断测试nginx是否正常运行

[root@nginx1 ~]# while true; do curl 192.168.10.11; sleep 5; done
This is a test from 192.168.10.11
This is a test from 192.168.10.11
This is a test from 192.168.10.11

安装新版本nginx

[root@nginx nginx-1.19.0]# nginx -V nginx version: nginx/1.15.0 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) built with OpenSSL 1.0.2k-fips 26 Jan 2017 TLS SNI support enabled configure arguments: --prefix=/opt/data/nginx --with-http_stub_status_module --with-http_ssl_module --with-stream
[root@nginx nginx-1.19.0]# ./configure --prefix=/opt/data/nginx --with-http_stub_status_module --with-http_ssl_module --with-stream
[root@nginx nginx-1.19.0]# echo $?
0
[root@nginx nginx-1.19.0]# make
[root@nginx nginx-1.19.0]# echo $?
0
[root@nginx nginx-1.19.0]# make install
[root@nginx nginx-1.19.0]# echo $?
0

向主进程发送USR2信号
启动新版本的主进程，和旧版本一起处理请求，旧版本的请求逐渐减少，直到完全没有请求，退出

[root@nginx nginx-1.19.0]# ps -ef | grep nginx
root       8961      1  0 16:40 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
nginx      8962   8961  0 16:40 ?        00:00:00 nginx: worker process
# 向主进程发送USR2信号
[root@nginx nginx-1.19.0]# kill -USR2 8961
[root@nginx nginx-1.19.0]# ps -ef | grep nginx
root       8961      1  0 16:40 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
nginx      8962   8961  0 16:40 ?        00:00:00 nginx: worker process
root      12285   8961  0 16:50 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
nginx     12286  12285  0 16:50 ?        00:00:00 nginx: worker process
root      12298   7923  0 16:50 pts/0    00:00:00 grep --color=auto nginx
# 发送WINCH信号
[root@nginx nginx-1.19.0]# kill -WINCH 8961
[root@nginx nginx-1.19.0]# ps -ef | grep nginx
root       8961      1  0 16:40 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
root      12285   8961  0 16:50 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
nginx     12286  12285  0 16:50 ?        00:00:00 nginx: worker process
root      12438   7923  0 16:52 pts/0    00:00:00 grep --color=auto nginx
# 关闭旧进程
[root@nginx nginx-1.19.0]# kill 8961
[root@nginx nginx-1.19.0]# ps -ef | grep nginx
root      12285      1  0 16:50 ?        00:00:00 nginx: master process /opt/data/nginx/sbin/nginx -c /opt/data/nginx/conf/nginx.conf
nginx     12286  12285  0 16:50 ?        00:00:00 nginx: worker process
root      12450   7923  0 16:53 pts/0    00:00:00 grep --color=auto nginx

查看监控端

并没有断开，nginx平滑升级完成
再次查看nginx版本，确保没出错误

[root@nginx ~]# nginx -V
nginx version: nginx/1.19.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/opt/data/nginx --with-http_stub_status_module --with-http_ssl_module --with-stream

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