Systemd+Supervisord

• Supervisord由root用户启动，由Systemd管理，开机自启动；
• 由Supervisord管理的程序自行决定由哪一用户启动；

安装Supervisord

• Python环境(Python+pip)
• setuptools · PyPI
• supervisor · PyPI
• 下载以上两个包的源码包.tar.gz

# 解压
tar -xzvf setuptools-68.1.2.tar.gz
tar -xzvf supervisor-4.2.5.tar.gz
# 安装
sudo python/python3 setuptools-68.1.2/setup.py install
sudo python/python3 supervisor-4.2.5/setup.py install
# 验证
supervisord -v

Supervisord添加到Systemd

• 使用root用户操作
• 创建文件及目录

mkdir -p /var/lib/supervisord
mkdir -p /var/log/supervisord
mkdir -p /etc/supervisord
touch /etc/supervisord.conf

• supervisord配置文件

[unix_http_server]
file = /var/lib/supervisord/supervisord.sock
chmod = 0755
chown = root:root
;username = root
;password = root

[inet_http_server]
port = 127.0.0.1:9999
username = root
password = root

[supervisord]
logfile = /var/log/supervisord/supervisord.log
logfile_maxbytes = 32MB
logfile_backups = 5
loglevel = info
pidfile = /var/lib/supervisord/supervisord.pid
nodaemon = false
minfds = 1024
minprocs = 200
umask = 022
user = root
identifier = supervisord
directory = /var/lib/supervisord
nocleanup = false
childlogdir = /tmp
strip_ansi = false

[supervisorctl]
serverurl = unix:///var/lib/supervisord/supervisord.sock
;username = root
;password = root
prompt = supervisor

[include]
files = /etc/supervisord/*.conf /home/justin/Service/supervisor_conf/*.conf

[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

• 启动命令

supervisord -c /etc/supervisord.conf

• 添加到Systemd

# 创建脚本
touch /usr/lib/systemd/system/supervisord.service
# 脚本内容
[Unit]
Description=Supervisor daemon

[Service]
Type=forking
ExecStart=/usr/bin/python3 /usr/local/bin/supervisord -c /etc/supervisord.conf
ExecStop=/usr/bin/python3 /usr/local/bin/supervisorctl $OPTIONS shutdown
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target

• 开机自启动

systemctl enable supervisord.service
systemctl start/stop/status supervisord.service

Supervisord管理服务

• 普通用户的服务的配置文件放置在/home/justin/Service/supervisor_conf目录下
• 系统用户的服务的配置文件放置在/etc/supervisord目录下
• 一般要求服务前台启动
• 示例配置文件如下

[program:zookeeper]
directory=/home/justin/Service/zookeeper-3.6.4
command=/home/justin/Service/zookeeper-3.6.4/bin/zkServer.sh start-foreground
autostart=false
autorestart=false
stopasgroup=true
killasgroup=true
user=justin
stdout_logfile=/home/justin/Service/zookeeper-3.6.4/logs/zoo_out.log
stdout_logfile_maxbytes=16MB
stdout_logfile_backups=2
redirect_stderr=true
environment=JAVA_HOME="/home/justin/.sdkman/candidates/java/current"