slave配置：
echo passwd > /usr/local/smokeping/etc/smokeping_secrets
chown smokeping: /usr/local/smokeping/etc/smokeping_secrets
chmod 600 /usr/local/smokeping/etc/smokeping_secrets
mkdir /usr/local/smokeping/cache
chown smokeping: -R /usr/local/smokeping/cache/
service:
[Unit]
Description=Smokeping Service, Network Latency Graphical Viewer
After=network.service
[Service]
Type=forking
Environment=MASTER=https://www.haiyun.me/
Environment=CACHEDIR=/usr/local/smokeping/cache
Environment=SECRET=/usr/local/smokeping/etc/smokeping_secrets
Environment=NAME=bj
#Environment=DEBUG=--debug-daemon
RuntimeDirectory=smokeping
RuntimeDirectoryMode=0775
PIDFile=/run/smokeping/smokeping.pid
User=smokeping
Group=smokeping
ExecReload=/bin/kill -HUP $MAINPID
ExecStart=/bin/sh -c "/usr/local/smokeping/bin/smokeping --master-url=${MASTER} --cache-dir=${CACHEDIR} --slave-name=${NAME} --shared-secret=${SECRET} --pid-dir=/run/smokeping/ ${DEBUG-DAEMON}"
ExecReload=/bin/kill -HUP $MAINPID
[Install]
WantedBy=default.target
master配置：
cat /etc/smokeping/config.d/Slaves
*** Slaves ***
secrets=/etc/smokeping/smokeping_secrets
+ bj # slave的名字
display_name=bj # slave的别名
#location=beijing
color=0000ff # slave收集的数据在图像中显示的颜色
cat /etc/smokeping/smokeping_secrets
bj:passwd
cat /etc/smokeping/config.d/Targets
+ Ping
menu = Ping
title = Ping
++ TEST
menu = test
title = test
host = www.haiyun.me
slaves = bj
master数据目录权限，注意fcgiwrap和smokeping使用用户smokeping启动
chown smokeping: /etc/smokeping/smokeping_secrets
chmod 600 /etc/smokeping/smokeping_secrets
mkdir /data/smokeping/data/Ping
mkdir /data/smokeping/data/__sortercache
mkdir /data/smokeping/data/__cgi/Ping
chown -R smokeping /data/smokeping/data/
遇到的问题：
1.ERROR: the shared secret file (/usr/local/smokeping/etc/smokeping_secrets) is world-readable or writable
解决：修改权限/usr/local/smokeping/etc/smokeping_secrets
2.WARNING: Opening secrets file /etc/smokeping/smokeping_secrets: Permission denied
解决：启动时添加--debug发现是master的错误，修改web server可读此文件
3.WARNING: Data from was signed with which does not match our expectation
解决：slave配置smokeping_secrets只添加密码
4.slave发送数据到master ok，但是无图表数据
解决：修改/data/smokeping/data/Ping/对应的rrd web可写
5.还是不行，查看nginx日志Could not lock /data/smokeping/data/__cgi//Ping/*.bj.slave_cache (No such file or directory).
解决：创建相应目录并给予web server可写权限
6.当master停机一段时间后slave积累大量数据提交WARNING Master said 413 Request Entity Too Large：
解决：nginx配置修改client_max_body_size 100m;
7.slave运行一段时间后停止，修改权限chown smokeping:smokeping -R /usr/local/smokeping/cache/ 解决
8.slave断电重启后没有数据，debug提示：Magic number checking on storable file failed at /usr/lib/x86_64-linux-gnu/perl/5.36/Storable.pm line 421, at /usr/local/smokeping/lib/Smokeping/Slave.pm line 70.
解决方法：清除slave cache即可
9.slave输出log受服务器端配置syslogfacility = local0控制
10.slave提交和访问web界面很卡，看nginx错误日志__cgi新建相应目录并给可写
11.有时浏览器刷新web界面会遇到Could not lock rrd数据库的错误，smokeping和fcgiwrap同用户运行并保证数据目录全部可写