nginx笔记（三）

nginx笔记(三)

热部署

nginx热部署

热升级的流程

1、将旧的nginx文件替换成新的nginx文件
2、向master进程发送USR2信号
3、master进程修改pid文件，加后缀.oldbin

4、master进程用新nginx文件启动新master进程
5、向旧的master进程发送WINCH信号，l旧的worker子进程退出
6、回滚情形∶向旧master发送HUP, l
向新的master发送QUIT

热升级过程图示

Nginx热部署完整步骤演示

[root@localhost ~]# /usr/sbin/nginx
[root@localhost ~]# ps -ef | grep nginx
root       1624      1  0 09:58 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1625   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1626   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1627   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1628   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1629   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1630   1624  0 09:58 ?        00:00:00 nginx: worker process
root       1632   1597  0 09:58 pts/0    00:00:00 grep --color=auto nginx
[root@localhost sbin]# cp nginx nginx.bak
root@localhost sbin]# ps -ef | grep nginx
root       1624      1  0 09:58 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1625   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1626   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1627   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1628   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1629   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1630   1624  0 09:58 ?        00:00:00 nginx: worker process
root       1675   1597  0 10:01 pts/0    00:00:00 grep --color=auto nginx
[root@localhost sbin]# kill -s SIGUSR2  1624 
[root@localhost sbin]# 
[root@localhost sbin]# ps -ef | grep nginx
root       1624      1  0 09:58 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1625   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1626   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1627   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1628   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1629   1624  0 09:58 ?        00:00:00 nginx: worker process
nginx      1630   1624  0 09:58 ?        00:00:00 nginx: worker process
root       1677   1624  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1685   1597  0 10:02 pts/0    00:00:00 grep --color=auto nginx
[root@localhost sbin]# 
[root@localhost usr]# cd /var/log/nginx/
[root@localhost nginx]# ls
access.log  access.log-20230407  error.log  error.log-20230407
[root@localhost ~]# kill -s SIGWINCH  1624 
[root@localhost ~]# ps -ef | grep nginx
root       1624      1  0 09:58 ?        00:00:00 nginx: master process /usr/sbin/nginx
root       1677   1624  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1697   1597  0 10:06 pts/0    00:00:00 grep --color=auto nginx
[root@localhost nginx]# kill -s SIGQUIT  1624 
[root@localhost nginx]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1701   1597  0 10:07 pts/0    00:00:00 grep --color=auto nginx
#回滚
[root@localhost nginx]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1707   1597  0 10:09 pts/0    00:00:00 grep --color=auto nginx
[root@localhost nginx]# kill -s SIGURG2 1677 
-bash: kill: SIGURG2: invalid signal specification
[root@localhost nginx]# kill -s SIGURG2 1677 
-bash: kill: SIGURG2: invalid signal specification
[root@localhost nginx]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1709   1597  0 10:10 pts/0    00:00:00 grep --color=auto nginx
[root@localhost nginx]# kill -s SIGURG2 1677 
-bash: kill: SIGURG2: invalid signal specification
[root@localhost nginx]# ls
access.log  access.log-20230407  error.log  error.log-20230407
[root@localhost nginx]# 
[root@localhost nginx]# 
[root@localhost nginx]# 
[root@localhost nginx]# cd
[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# kill -s SIGURG2 1677 
-bash: kill: SIGURG2: invalid signal specification
[root@localhost ~]# kill -s SIGUSR2 1677 
[root@localhost ~]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1678   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1679   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1680   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1681   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1682   1677  0 10:02 ?        00:00:00 nginx: worker process
nginx      1683   1677  0 10:02 ?        00:00:00 nginx: worker process
root       1711   1677  0 10:11 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1712   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1713   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1714   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1715   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1716   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1717   1711  0 10:11 ?        00:00:00 nginx: worker process
root       1719   1597  0 10:11 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]# kill -s SIGWINCH  1677
[root@localhost ~]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
root       1711   1677  0 10:11 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1712   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1713   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1714   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1715   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1716   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1717   1711  0 10:11 ?        00:00:00 nginx: worker process
root       1744   1597  0 10:12 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]# kill -s SIGHUP 1677 
[root@localhost ~]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
root       1711   1677  0 10:11 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1712   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1713   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1714   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1715   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1716   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1717   1711  0 10:11 ?        00:00:00 nginx: worker process
nginx      1746   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1747   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1748   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1749   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1750   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1751   1677  0 10:13 ?        00:00:00 nginx: worker process
root       1753   1597  0 10:13 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]# kill -s SIGQUIT   1711 
[root@localhost ~]# ps -ef | grep nginx
root       1677      1  0 10:02 ?        00:00:00 nginx: master process /usr/sbin/nginx
nginx      1746   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1747   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1748   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1749   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1750   1677  0 10:13 ?        00:00:00 nginx: worker process
nginx      1751   1677  0 10:13 ?        00:00:00 nginx: worker process
root       1756   1597  0 10:14 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]#