How to restart php-fpm inside a docker container?

Question

I\'m using docker and my container is build over php:5.6-fpm image from php official repo. Is it somehow possible to restart/reload php-fpm from inside a container?

Answer 1

You don't have to go inside the container

on your host ps -ef|grep fpm // find master pid kill -USR2 <master_pid>

Answer 2

You can also just restart the container..

sudo docker restart <container>

Answer 3

php-fpm is a process manager which supports the USER2 signal, which is used to reload the config file.

From inside the container:

kill -USR2 1

Outside:

docker exec -it <mycontainer> kill -USR2 1

Complete example:

docker run -d --name test123 php:7.1-fpm-alpine
docker exec -it test123 ps aux
docker exec -it test123 kill -USR2 1
docker exec -it test123 ps aux

Answer 4

This works for me:

If the command fpm restart fails run this inside the Docker container -> www#:

root@...:/var/www# **ps -ef|grep fpm**  
www-data   160     1  0 10:02 ?        00:00:00 php-fpm: pool www  
www-data   161     1  0 10:02 ?        00:00:00 php-fpm: pool www  
root      1111   170  0 10:04 pts/0    00:00:00 grep --color=auto fpm  

root@...:/var/www# **kill -USR2 170**  

root@...:/home/user/Docker# **docker-compose stop**  
Stopping docker_nginx_1  ... done  
Stopping docker_oracle_1 ... done  

root@...:/home/user/Docker# **docker-compose up -d**  
Starting docker_oracle_1 ... done  
Starting docker_nginx_1  ... done  

root@...:/home/user/Docker# **docker-compose exec oracle bash**

root@...:/var/www# **/etc/init.d/php7.2-fpm restart**  
 * Restarting PHP 7.2 FastCGI Process Manager php-fpm7.2                                          **[ OK ]**