CoreOS 配置工具 Ignition 官方示例

CoreOS 配置工具已由 Ignition 代替 cloud-config

GitHub:https://github.com/coreos/ignition

使用 Ignition 需要两步:

  • 第一步编写 Container Linux Config ( yaml 格式 )

  • 第二步使用 container-linux-config-transpilerContainer Linux Config 转化为 Ignition Config (json 格式)

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$ ct-v0.5.0-x86_64-apple-darwin -in-file ignition.yaml  > ignition.json

container-linux-config-transpiler 安装方法

https://github.com/coreos/container-linux-config-transpiler/releases 下载二进制文件移入 PATH,并赋予可执行权限之后即可使用。

brew

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$ brew install coreos-ct

$ ct -help

官方文档:https://coreos.com/os/docs/latest/overview-of-ct.html

常用配置举例

etcd

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etcd:
name: coreos3
discovery: https://discovery.etcd.io/249ea9815631abc753fe4a4743f147d2
advertise_client_urls: http://192.168.57.102:2379
initial_advertise_peer_urls: http://192.168.57.102:2380
listen_client_urls: http://192.168.57.102:2379,http://0.0.0.0:4001
listen_peer_urls: http://0.0.0.0:2380

网络配置

通过与网络接口名称( enp0s3 等)匹配来设置静态或动态 IP 地址

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networkd:
units:
- name: 10-static.network
contents: |
[Match]
Name=enp0s3

[Network]
Address=192.168.57.102/24
- name: 20-dhcp.network
contents: |
[Match]
Name=enp0s8

[Network]
DHCP=yes

用户

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passwd:
users:
- name: core
ssh_authorized_keys:
- ssh-rsa SSH_PUB
groups:
- wheel
- sudo
- docker

systemd unit

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systemd:
units:
- name: settimezone.service
enable: true
contents: |
[Unit]
Description=Set the time zone

[Service]
ExecStart=/usr/bin/timedatectl set-timezone PRC
RemainAfterExit=yes
Type=oneshot

文件

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storage:
files:
- filesystem: "root"
path: "/etc/hostname"
mode: 0644
contents:
inline: coreos3
- filesystem: "root"
path: "/etc/resolv.conf"
mode: 0644
contents:
inline: |
nameserver 114.114.114.114

示例文件

https://github.com/khs1994-docker/coreos/blob/master/disk/ignition-1.example.yaml

相关链接

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