Shulou(Shulou.com)06/03 Report--

1. Compile and install nginx-1.14.2:

# yum-y install gcc pcre pcre-devel zlib zlib-devel

# tar-xf nginx-1.14.2.tar.gz

# cd nginx-1.14.2

#. / configure-prefix=/usr/local/nginx

# make & & make install

2. Make sure to start Nginx in an absolute path:

# / usr/local/nginx/sbin/nginx

Note: if the environment variable PATH is configured and started directly as a nginx command, the / usr/local/nginx/logs/error.log error log file will prompt execve () failed while executing new binary process "nginx" (2: No such file or directory) when the kill-USR2 command is executed later.

# ss-tunlp | grep-w: 80

Browsers access http://122.51.34.214/

3. Check the pre-upgrade version of Nginx:

# / usr/local/nginx/sbin/nginx-v

4. Compile nginx-1.16.1:

# tar-xf nginx-1.16.1.tar.gz

# cd nginx-1.16.1

#. / configure-prefix=/usr/local/nginx

# make

Note:

(1) when executing the configure command, there are only many more options than the old version, and the objs directory will be generated after the execution is completed.

(2) execute the make command to generate nginx binaries in the objs directory

(3) cannot execute make install command

5. Use the ab command to simulate multiple concurrent access during upgrade:

# yum-y install httpd-tools

# ab-n 10000-c 20 http://122.51.34.214/

6. Back up the old version of Nginx binaries: # cp / usr/local/nginx/sbin/nginx {, _ 1.14.2}

7. Force the new version of Nginx binaries to replace the old version binaries (do not replace configuration files):

# cp-f nginx-1.16.1/objs/nginx / usr/local/nginx/sbin/

# ll / usr/local/nginx/sbin/

8. Send a USR2 signal to the old master process to inform the version upgrade. The old master process first renames the logs/nginx.pid file to nginx.pid.oldbin, then runs the new version of the Nginx binary file to start the new master process, and the new master process starts the new worker process, where the parent process of the new master process is the old master process.

# ps-ef | grep nginx | grep-v grep

# kill-USR2 [old-master-pid]

9. Send a WINCH signal to the old master process, telling it to gracefully close the old worker process, but the old master process will not exit automatically:

# kill-WINCH [old-master-pid]

10. If you confirm that the new worker process is working properly, you can send a QUIT signal to the old master process, telling it to exit automatically:

# kill-QUIT [old-master-pid]

11. View the upgraded Nginx version:

# / usr/local/nginx/sbin/nginx-v

Update and reload the configuration file

Attachment: if the new version of Nginx does not work properly, you need to go back to the old version of Nginx

1. Send a HUP signal to the old master process, telling it to start the old worker process:

# kill-HUP [old-master-pid]

2. Send a QUIT signal to the new master process, telling it to gracefully close the new worker process and exit automatically:

# kill-QUIT [new-master-pid]

3. Restore nginx_1.14.2 to nginx

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