配置国内源
# 配置国内源
echo "http://mirrors.aliyun.com/alpine/latest-stable/main/" > /etc/apk/repositories
echo "http://mirrors.aliyun.com/alpine/latest-stable/community/" >> /etc/apk/repositories
# 升级apk-tools
apk upgrade --no-cache apk-tools
安装 rc-service 服务
Alpine使用的是OpenRCinit系统，而rc-service是openrc的一部分，所以安装openrc即可，使用如下命令安装：
apk add openrc --no-cache
管理服务
列出所有可用服务
rc-service --list
启动/停止/重启 已有服务
rc-service 服务名 start/stop/restart
OR
/etc/init.d/服务名 start/stop/restart
设置开机自启动
rc-update add {service-name}
启动openvpn报错
- 出现：* WARNING: openvpn is already starting或touch: /run/openrc/softlevel: No such file or directory问题
解决方案
sudo apk add --no-cache openrc
sudo openrc
sudo touch /run/openrc/softlevel
sudo rc-service openvpn start
- 出现 Note: Cannot open TUN/TAP dev /dev/net/tun: Permission denied (errno=13) Note: Attempting fallback to kernel 2.2 TUN/TAP interface Cannot open TUN/TAP dev /dev/tun0: No such file or directory (errno=2)
The TUN/TAP device is not set up by default on your VPS. Instructions will vary with your virtualization platform.
解决：
mkdir -p /dev/net
mknod /dev/net/tun c 10 200
chmod 600 /dev/net/tun
cat /dev/net/tun测试TUN/TAP设备是否可用：
如果您收到消息cat: /dev/net/tun: File descriptor in bad state您的 TUN/TAP 设备已准备好使用
如果您收到消息cat: /dev/net/tun: No such device the TUN/TAP 设备未成功创建```
另一种解决办法：http://blog.huati365.com/de40b3efbb095ce8
- 老是提示
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/blkio/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/cpu/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/cpu,cpuacct/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/cpuacct/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/cpuset/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/devices/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/freezer/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/hugetlb/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/memory/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/net_cls/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/net_cls,net_prio/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/net_prio/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/perf_event/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/pids/tasks: Read-only file system
/lib/rc/sh/openrc-run.sh: line 279: can’t create /sys/fs/cgroup/systemd/tasks: Read-only file system
解决
dockerfile加了一条：VOLUME [ “/sys/fs/cgroup” ]
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