我正在尝试使用在 Docker 中运行的 CentOS 映像列出服务
systemctl list-units
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但我收到此错误消息:
Failed to get D-Bus connection: Operation not permitted
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任何建议可能是什么问题?
注册主机简介说:
Register public hosts on your domain by IP address so they can be found
without first resolving your domain in the DNS. Entries here are commonly
called "glue records" and are needed when a domain's nameservers serve on one
of its subdomains.
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但自定义记录说:
Resource records define how your domain behaves. Common uses include pointing
your domain at your web server or configuring email delivery for your domain.
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如果我想通过 IP 地址注册公共网络主机,我应该使用哪个?
例如www.mydomain.com->1.1.1.1
我正在通过 CloudFormation 模板启动一个 EC2 实例,但是,指定的实例t2.micro需要一个 VPC。
如何在 CloudFormation 模板中指定 VPC?
这是我的模板:
{
"Description" : "Single Instance",
"Resources" : {
"EC2Instance" : {
"Type" : "AWS::EC2::Instance",
"Properties" : {
"ImageId" : "ami-b73b63a0",
"InstanceType" : "t2.micro",
"KeyName" : "my-key",
"Tags" : [
{
"Key" : "Name",
"Value" : "test"
}
]
}
}
}
}
Run Code Online (Sandbox Code Playgroud) 如何从 VG 中删除 PV?
这是我尝试过的:
# vgreduce vg_iscsi /dev/sdb1
Physical volume "/dev/sdb1" still in use
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root centos -wi-ao---- 6.67g
swap centos -wi-ao---- 820.00m
lvm02 vg2 -wi-a----- 800.00m
lv_iscsi_1 vg_iscsi -wi-ao---- 52.00m
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然后
# lvremove -f vg_iscsi/lv_iscsi_1
Logical volume vg_iscsi/lv_iscsi_1 in use.
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使用 fuser
# fuser -kuc /dev/vg_iscsi/lv_iscsi_1
/dev/dm-3: 1558(root)
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我尝试过kill -9这个,但是当我发出kill信号时,这个过程似乎已经消失了。
但是,现在我明白了:
# vgreduce vg_iscsi /dev/sdb1
Can't remove final physical volume "/dev/sdb1" …Run Code Online (Sandbox Code Playgroud) 我看到 GET 请求如下:
"GET /assets/)!==t&&(e.html(e.data( HTTP/1.1" 200 3538 "-" "Java/1.7.0_25"
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在我的日志中,用于托管 Rails 应用程序的盒子。看起来很可疑,就像有人在探查应用程序,但不能确定。
有什么建议?