Confd教程

[iliuyt]

GitHub项目地址

github项目地址

下载

wget https://github.com/kelseyhightower/confd/releases/download/v0.14.0/confd-0.14.0-linux-amd64

创建目录

mkdir -p /opt/confd/bin
mv confd-0.14.0-linux-amd64 /opt/confd/bin/confd
chmod +x /opt/confd/bin/confd
export PATH="$PATH:/opt/confd/bin"

配置目录

mkdir -p /etc/confd/conf.d
mkdir -p /etc/confd/templates

添加模板配置

[template]
src = "config.json.tmpl"
dest = "/code/config/config.json"
keys = [
    "/mysql/host",
    "/mysql/port",
]

添加模板

{
    mysql:{
        host:{{getv "/mysql/host"}},
        port:{{getv "/mysql/port"}},
    }
}

通过etcd启动

confd -onetime -backend etcd -node http://127.0.0.1:2379

脚本

#!/bin/bash

wget https://github.com/kelseyhightower/confd/releases/download/v0.14.0/confd-0.14.0-linux-amd64
mv confd-0.14.0-linux-amd64 /usr/bin/confd
chmod +x /usr/bin/confd
mkdir -p /etc/confd/conf.d
mkdir -p /etc/confd/templates

cat <<EOF | tee /etc/confd/conf.d/config.toml
[template]
src = "config.json.tmpl"
dest = "/tmp/config.json"
keys = [
    "/mysql/host",
    "/mysql/port",
]
reload_cmd = "echo 'reload' > /tmp/confd.log"
EOF

cat <<EOF | tee //etc/confd/templates/config.json.tmpl
{
    mysql:{
        host:{{getv "/mysql/host"}},
        port:{{getv "/mysql/port"}},
    }
}
EOF

cat <<EOF | tee /etc/systemd/system/confd.service

[Unit]
Description=Confd Server
After=network.target

[Service]
User=root
Type=notify
ExecStart=/usr/bin/etcd --watch -backend etcd -node http://127.0.0.1:2379
Restart=on-failure
RestartSec=10s
LimitNOFILE=40000

[Install]
WantedBy=multi-user.target
EOF

etcdctl set /mysql/host 192.168.0.1
etcdctl set /mysql/port 8888

confd -onetime -backend etcd -node http://127.0.0.1:2379