117 lines
3.1 KiB
Go
Executable file
117 lines
3.1 KiB
Go
Executable file
package docker
|
|
|
|
import (
|
|
"text/template"
|
|
)
|
|
|
|
const LxcTemplate = `
|
|
# hostname
|
|
{{if .Config.Hostname}}
|
|
lxc.utsname = {{.Config.Hostname}}
|
|
{{else}}
|
|
lxc.utsname = {{.Id}}
|
|
{{end}}
|
|
#lxc.aa_profile = unconfined
|
|
|
|
# network configuration
|
|
lxc.network.type = veth
|
|
lxc.network.flags = up
|
|
lxc.network.link = lxcbr0
|
|
lxc.network.name = eth0
|
|
lxc.network.mtu = 1500
|
|
lxc.network.ipv4 = {{.NetworkSettings.IpAddress}}/{{.NetworkSettings.IpPrefixLen}}
|
|
|
|
# root filesystem
|
|
{{$ROOTFS := .RootfsPath}}
|
|
lxc.rootfs = {{$ROOTFS}}
|
|
|
|
# use a dedicated pts for the container (and limit the number of pseudo terminal
|
|
# available)
|
|
lxc.pts = 1024
|
|
|
|
# disable the main console
|
|
lxc.console = none
|
|
|
|
# no controlling tty at all
|
|
lxc.tty = 1
|
|
|
|
# no implicit access to devices
|
|
lxc.cgroup.devices.deny = a
|
|
|
|
# /dev/null and zero
|
|
lxc.cgroup.devices.allow = c 1:3 rwm
|
|
lxc.cgroup.devices.allow = c 1:5 rwm
|
|
|
|
# consoles
|
|
lxc.cgroup.devices.allow = c 5:1 rwm
|
|
lxc.cgroup.devices.allow = c 5:0 rwm
|
|
lxc.cgroup.devices.allow = c 4:0 rwm
|
|
lxc.cgroup.devices.allow = c 4:1 rwm
|
|
|
|
# /dev/urandom,/dev/random
|
|
lxc.cgroup.devices.allow = c 1:9 rwm
|
|
lxc.cgroup.devices.allow = c 1:8 rwm
|
|
|
|
# /dev/pts/* - pts namespaces are "coming soon"
|
|
lxc.cgroup.devices.allow = c 136:* rwm
|
|
lxc.cgroup.devices.allow = c 5:2 rwm
|
|
|
|
# tuntap
|
|
lxc.cgroup.devices.allow = c 10:200 rwm
|
|
|
|
# fuse
|
|
#lxc.cgroup.devices.allow = c 10:229 rwm
|
|
|
|
# rtc
|
|
#lxc.cgroup.devices.allow = c 254:0 rwm
|
|
|
|
|
|
# standard mount point
|
|
lxc.mount.entry = proc {{$ROOTFS}}/proc proc nosuid,nodev,noexec 0 0
|
|
lxc.mount.entry = sysfs {{$ROOTFS}}/sys sysfs nosuid,nodev,noexec 0 0
|
|
lxc.mount.entry = devpts {{$ROOTFS}}/dev/pts devpts newinstance,ptmxmode=0666,nosuid,noexec 0 0
|
|
#lxc.mount.entry = varrun {{$ROOTFS}}/var/run tmpfs mode=755,size=4096k,nosuid,nodev,noexec 0 0
|
|
#lxc.mount.entry = varlock {{$ROOTFS}}/var/lock tmpfs size=1024k,nosuid,nodev,noexec 0 0
|
|
#lxc.mount.entry = shm {{$ROOTFS}}/dev/shm tmpfs size=65536k,nosuid,nodev,noexec 0 0
|
|
|
|
# Inject docker-init
|
|
lxc.mount.entry = {{.SysInitPath}} {{$ROOTFS}}/sbin/init none bind,ro 0 0
|
|
|
|
# In order to get a working DNS environment, mount bind (ro) the host's /etc/resolv.conf into the container
|
|
lxc.mount.entry = /etc/resolv.conf {{$ROOTFS}}/etc/resolv.conf none bind,ro 0 0
|
|
|
|
|
|
# drop linux capabilities (apply mainly to the user root in the container)
|
|
lxc.cap.drop = audit_control audit_write mac_admin mac_override mknod setfcap setpcap sys_admin sys_boot sys_module sys_nice sys_pacct sys_rawio sys_resource sys_time sys_tty_config
|
|
|
|
# limits
|
|
{{if .Config.Memory}}
|
|
lxc.cgroup.memory.limit_in_bytes = {{.Config.Memory}}
|
|
lxc.cgroup.memory.soft_limit_in_bytes = {{.Config.Memory}}
|
|
{{with $memSwap := getMemorySwap .Config}}
|
|
lxc.cgroup.memory.memsw.limit_in_bytes = {{$memSwap}}
|
|
{{end}}
|
|
{{end}}
|
|
`
|
|
|
|
var LxcTemplateCompiled *template.Template
|
|
|
|
func getMemorySwap(config *Config) int64 {
|
|
// By default, MemorySwap is set to twice the size of RAM.
|
|
// If you want to omit MemorySwap, set it to `-1'.
|
|
if config.MemorySwap < 0 {
|
|
return 0
|
|
}
|
|
return config.Memory * 2
|
|
}
|
|
|
|
func init() {
|
|
var err error
|
|
funcMap := template.FuncMap{
|
|
"getMemorySwap": getMemorySwap,
|
|
}
|
|
LxcTemplateCompiled, err = template.New("lxc").Funcs(funcMap).Parse(LxcTemplate)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
}
|