cannot find package “github.com/coreos/go-systemd/journal”

1. 问题现象

使用 golang etcd 导入包 github.com/coreos/etcd/clientv3 库时有如下错误：

../github.com/coreos/etcd/pkg/logutil/zap_journal.go:29:2: 
cannot find package "github.com/coreos/go-systemd/journal" in any of:
	/usr/local/go/src/github.com/coreos/go-systemd/journal (from $GOROOT)
	/home/wohu/GoCode/src/github.com/coreos/go-systemd/journal (from $GOPATH)

2. 解决方案

下载对应的的代码包

git clone https://github.com/coreos/go-systemd.git

然后将 go-systemd 目录拷贝到 $GOPATH/src/github.com/coreos/go-systemd 目录下。