nginx 1.16.1平滑升级至nginx 1.20.1

企业开发 2023-12-18 03:55:18 阅读次数: 0

原环境：

# /usr/sbin/nginx -V
nginx version: nginx/1.16.1
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.1.1c  28 May 2019
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --with-http_ssl_module --with-openssl=/usr/local/ssl --with-http_stub_status_module --with-http_gzip_static_module --with-http_realip_module --add-module=/opt/nginx/ngx_devel_kit-0.3.1 --add-module=/opt/nginx/lua-nginx-module-0.10.15 --add-module=/opt/nginx/nginx_upstream_check_module-master

# cat /usr/lib/systemd/system/nginx.service
[Unit]
Description=nginx - high performance web server
Documentation=http://nginx.org/en/docs/
After=network-online.target remote-fs.target nss-lookup.target
Wants=network-online.target

[Service]
Type=forking
PIDFile=/var/run/nginx.pid
ExecStart=/usr/sbin/nginx -c /opt/nginx/conf/nginx.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID

[Install]
WantedBy=multi-user.target

安装包下载：
http://nginx.org/download/nginx-1.20.1.tar.gz

安装nginx1.20.1过程：

cp /opt/nginx/conf/nginx.conf{,.bak}
tar -zxf nginx-1.20.1.tar.gz 
cd nginx-1.20.1
cp auto/lib/openssl/conf{,.bak}
vim auto/lib/openssl/conf 
:39,42s@/.openssl@@g修改去掉.openssl/
           # CORE_INCS="$CORE_INCS $OPENSSL/.openssl/include"
           # CORE_DEPS="$CORE_DEPS $OPENSSL/.openssl/include/openssl/ssl.h"
           # CORE_LIBS="$CORE_LIBS $OPENSSL/.openssl/lib/libssl.a"
           # CORE_LIBS="$CORE_LIBS $OPENSSL/.openssl/lib/libcrypto.a"
           # CORE_LIBS="$CORE_LIBS $NGX_LIBDL"
改为：
            CORE_INCS="$CORE_INCS $OPENSSL/include"
            CORE_DEPS="$CORE_DEPS $OPENSSL/include/openssl/ssl.h"
            CORE_LIBS="$CORE_LIBS $OPENSSL/lib/libssl.a"
            CORE_LIBS="$CORE_LIBS $OPENSSL/lib/libcrypto.a"
            CORE_LIBS="$CORE_LIBS $NGX_LIBDL"
# 新下载的nginx在执行./configure的时候--prefix指定的目录是需要指向旧的nginx所指向的prefix目录
./configure --prefix=/opt/nginx --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --with-http_ssl_module --with-openssl=/usr/local/ssl --with-http_stub_status_module --with-http_gzip_static_module --with-http_realip_module --add-module=/opt/nginx/ngx_devel_kit-0.3.1 --add-module=/opt/nginx/lua-nginx-module-0.10.15 --add-module=/opt/nginx/nginx_upstream_check_module-master

make
# 执行完成之后不要执行make install指令，这点需要注意。

平滑升级

#先备份旧的nginx二进制可执行程序
cp /opt/nginx/sbin/nginx{,.bak}

#使用nginx-1.20.1的新二进制文件将nginx-1.16.1的二进制文件进行强制覆盖
[root@web nginx-1.20.1]# cp -f objs/nginx /opt/nginx/sbin/nginx
cp: overwrite ‘/opt/nginx/sbin/nginx’? y

【方法一】：用这个方法更简单，执行这个即可很快升级完成
[root@web nginx-1.20.1]# make upgrade
/opt/nginx/sbin/nginx -t
nginx: the configuration file /opt/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /opt/nginx/conf/nginx.conf test is successful
kill -USR2 `cat /var/run/nginx.pid`
sleep 1
test -f /var/run/nginx.pid.oldbin
kill -QUIT `cat /var/run/nginx.pid.oldbin`
[root@web nginx-1.20.1]# /usr/sbin/nginx -V
nginx version: nginx/1.20.1
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.1.1c  28 May 2019
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --with-http_ssl_module --with-openssl=/usr/local/ssl --with-http_stub_status_module --with-http_gzip_static_module --with-http_realip_module --add-module=/opt/nginx/ngx_devel_kit-0.3.1 --add-module=/opt/nginx/lua-nginx-module-0.10.15 --add-module=/opt/nginx/nginx_upstream_check_module-master

【方法二】：步骤多一点
# 设定旧的服务不再接收用户请求(下线)，新服务启动子进程接收用户请求(上线)
[root@web nginx-1.20.1]# ps aux | grep nginx
root      3672  0.0  0.0  97976  3116 ?        Ss    2019   0:00 nginx: master process /usr/sbin/nginx -c /opt/nginx/conf/nginx.conf
root      9069  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9070  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9071  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9072  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9073  0.0  0.0  98380  2780 ?        S     2019   0:00 nginx: worker process
root      9074  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9075  0.0  0.0  98380  2532 ?        S     2019   0:00 nginx: worker process
root      9076  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root     23460  0.0  0.0 112712   980 pts/0    R+   11:22   0:00 grep --color=auto nginx
#找到nginx父进程的pid号，现在对其发送USR2信号
[root@web nginx-1.20.1]# kill -USR2 3672    
##设定新的子进程开始接收用户的访问请求,旧的不再接受用户的访问请求
[root@web nginx-1.20.1]# ps aux | grep nginx
root      3672  0.0  0.0  97976  3120 ?        Ss    2019   0:00 nginx: master process /usr/sbin/nginx -c /opt/nginx/conf/nginx.conf
root      9069  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9070  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9071  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9072  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9073  0.0  0.0  98380  2780 ?        S     2019   0:00 nginx: worker process
root      9074  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root      9075  0.0  0.0  98380  2532 ?        S     2019   0:00 nginx: worker process
root      9076  0.0  0.0  98380  2528 ?        S     2019   0:00 nginx: worker process
root     23461  0.0  0.0  97732  3888 ?        S    11:22   0:00 nginx: master process /usr/sbinnginx -c /opt/nginx/conf/nginx.conf
root     23462  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23463  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23464  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23465  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23466  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23467  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23468  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23469  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23473  0.0  0.0 112716   980 pts/0    S+   11:22   0:00 grep --color=auto nginx
#现在是nginx的新老版本的进程共存的一种情况。虽然现在旧版本的nginx进程还存在，但是已经不再接受用户的请求了。除此之外，旧版本的nginx进程也依然处于监听的状态，我们通过lsof命令可以看到,虽然在监听，但实际不会处理新连接，因为fd已经从epoll中移出了。另外，旧master是新master的父进程，所以新master才能共享打开的监听端口。保留旧版本的master是为了方便回滚
[root@voicenginx01ability nginx-1.20.1]# lsof -p 3672 | grep LISTEN
nginx   3672 root    7u  IPv4          144852840      0t0       TCP *:http (LISTEN)

## 进行旧服务进程的关闭，该pid号是旧版本的nginx的master进程的pid号
[root@web nginx-1.20.1]# kill -WINCH 3672

[root@web nginx-1.20.1]# ps aux | grep nginx       
root      3672  0.0  0.0  97976  3120 ?        Ss    2019   0:00 nginx: master process /usr/sbinnginx -c /opt/nginx/conf/nginx.conf
root     23461  0.0  0.0  97732  3888 ?        S    11:22   0:00 nginx: master process /usr/sbinnginx -c /opt/nginx/conf/nginx.conf
root     23462  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23463  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23464  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23465  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23466  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23467  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23468  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23469  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23480  0.0  0.0 112716   976 pts/0    R+   11:23   0:00 grep --color=auto nginx

#可以看到现在的旧版本的nginx的worker进程已经全部被杀死了，只剩下的旧版本nginx的master进程
确定升级没有任何问题的话，那么现在我们可以把这个master进程给杀死掉。可以用kill -QUIT把旧master进程杀掉
 kill -QUIT 3672
[root@web nginx-1.20.1]# ps aux | grep nginx
root     23461  0.0  0.0  97732  3888 ?        S    11:22   0:00 nginx: master process /usr/sbinnginx -c /opt/nginx/conf/nginx.conf
root     23462  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23463  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23464  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23465  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23466  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23467  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23468  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23469  0.0  0.0  98136  1984 ?        S    11:22   0:00 nginx: worker process
root     23505  0.0  0.0 112712   976 pts/0    R+   11:27   0:00 grep --color=auto nginx

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