1. Purpose
Upgrading typically add new modules, or upgrade. We will demonstrate the following add echo-nginx-module-0.61 module.
First download and extract the echo-nginx-module-0.61 nginx module installation package to the same directory:
[root@localhost nginx-1.16.1]# ls /usr/src
debug echo-nginx-module-0.61 echo-nginx-module-0.61.tar.gz kernels nginx-1.16.1 nginx-1.16.1.tar.gz
Option One:
Add modules, recompile
[root@localhost nginx-1.16.1]# pwd
/usr/src/nginx-1.16.1
[root@localhost nginx-1.16.1]# ./configure --prefix=/usr/local/nginx --add-module=../echo-nginx-module-0.61
[root@localhost nginx-1.16.1]#make
[root@localhost nginx-1.16.1]#make install
#只会重新生成二进制文件，不会覆盖其他文件
[root@localhost nginx-1.16.1]# ls /usr/local/nginx/sbin/
nginx nginx.old
View pid
[root@localhost nginx-1.16.1]# ps -ef|grep nginx
root 13529 1 0 19:10 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13530 13529 0 19:10 ? 00:00:00 nginx: worker process
nobody 13531 13529 0 19:10 ? 00:00:00 nginx: worker process
nobody 13532 13529 0 19:10 ? 00:00:00 nginx: worker process
nobody 13533 13529 0 19:10 ? 00:00:00 nginx: worker process
root 13595 9891 0 19:17 pts/0 00:00:00 grep --color=auto nginx
upgrade
[root@localhost nginx-1.16.1]# make upgrade
/usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`
sleep 1
test -f /usr/local/nginx/logs/nginx.pid.oldbin
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`
Check again pid, and upgrade different pre-pid, the upgrade is complete
[root@localhost nginx-1.16.1]# ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13603 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13604 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13605 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13606 13601 0 19:17 ? 00:00:00 nginx: worker process
root 13612 9891 0 19:17 pts/0 00:00:00 grep --color=auto nginx
Option II:
The program to restore a binary file, a program two tests
[root@localhost nginx-1.16.1]# rm -rf /usr/local/nginx/sbin/nginx
[root@localhost nginx-1.16.1]# mv /usr/local/nginx/sbin/nginx.old /usr/local/nginx/sbin/nginx
[root@localhost nginx-1.16.1]# /usr/local/nginx/sbin/nginx -V
nginx version: MYWS/1.8
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
View pid
[root@localhost nginx-1.16.1]# !ps
ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13603 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13604 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13605 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13606 13601 0 19:17 ? 00:00:00 nginx: worker process
root 13646 9891 0 19:28 pts/0 00:00:00 grep --color=auto nginx
Generate a new master process
[root@localhost nginx-1.16.1]# kill -USR2 13601
View pid again, old and new processes exist. Once the new process is pulled up, all requests are processed by the new process, the process will no longer deal with the old
[root@localhost nginx-1.16.1]# !ps
ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13603 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13604 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13605 13601 0 19:17 ? 00:00:00 nginx: worker process
nobody 13606 13601 0 19:17 ? 00:00:00 nginx: worker process
root 13647 13601 0 19:29 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13648 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13649 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13650 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13651 13647 0 19:29 ? 00:00:00 nginx: worker process
root 13653 9891 0 19:29 pts/0 00:00:00 grep --color=auto nginx
Elegant old worker process exit
[root@localhost nginx-1.16.1]# kill -WINCH 13601
[root@localhost nginx-1.16.1]# !ps
ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
root 13647 13601 0 19:29 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13648 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13649 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13650 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13651 13647 0 19:29 ? 00:00:00 nginx: worker process
root 13656 9891 0 19:33 pts/0 00:00:00 grep --color=auto nginx
Choice 1: a period of observation If the new process is no problem, get rid of the old process, the upgrade is complete
kill -QUIT 13601
Choice 2: If the new period of observation process has a problem, then re-pull the old process
[root@localhost nginx-1.16.1]# kill -HUP 13601
[root@localhost nginx-1.16.1]# !ps
ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
root 13647 13601 0 19:29 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13648 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13649 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13650 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13651 13647 0 19:29 ? 00:00:00 nginx: worker process
nobody 13658 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13659 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13660 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13661 13601 0 19:35 ? 00:00:00 nginx: worker process
root 13663 9891 0 19:35 pts/0 00:00:00 grep --color=auto nginx
Get rid of the new process, to restore the old process
[root@localhost nginx-1.16.1]# kill -QUIT 13647
[root@localhost nginx-1.16.1]# !ps
ps -ef|grep nginx
root 13601 1 0 19:17 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody 13658 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13659 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13660 13601 0 19:35 ? 00:00:00 nginx: worker process
nobody 13661 13601 0 19:35 ? 00:00:00 nginx: worker process
root 13665 9891 0 19:36 pts/0 00:00:00 grep --color=auto nginx
