Amazon ec2 查找附加到ELB的实例的方法
我正在使用Amazon AWS ELB命令行工具。有没有办法找到连接到特定弹性负载平衡器(ELB)的实例?2013/12/18:更新此实例,因为链接已断开强> 我安装了新的AWS cli工具:Amazon ec2 查找附加到ELB的实例的方法,amazon-ec2,amazon-web-services,amazon-elb,Amazon Ec2,Amazon Web Services,Amazon Elb,我正在使用Amazon AWS ELB命令行工具。有没有办法找到连接到特定弹性负载平衡器(ELB)的实例?2013/12/18:更新此实例,因为链接已断开 我安装了新的AWS cli工具: $ pip install awscli 然后跑: $ aws configure
$ pip install awscli
然后跑:
$ aws configure
AWS Access Key ID [None]: my-key
AWS Secret Access Key [None]: my-secret
Default region name [None]: us-east-1
Default output format [None]:
此数据保存到~/.aws/config
中
然后我可以找到连接到loadbalancer的实例,如下所示:
$ aws elb describe-load-balancers --load-balancer-name "my-name"
{
"LoadBalancerDescriptions": [
{
"Subnets": [],
"CanonicalHostedZoneNameID": "ID",
"CanonicalHostedZoneName": "my-name-foo.us-east-1.elb.amazonaws.com",
"ListenerDescriptions": [
{
"Listener": {
"InstancePort": 80,
"LoadBalancerPort": 80,
"Protocol": "HTTP",
"InstanceProtocol": "HTTP"
},
"PolicyNames": []
},
{
"Listener": {
"InstancePort": 80,
"SSLCertificateId": "arn:aws:iam::x:server-certificate/x-ssl-prod",
"LoadBalancerPort": 443,
"Protocol": "HTTPS",
"InstanceProtocol": "HTTP"
},
"PolicyNames": [
"AWSConsole-SSLNegotiationPolicy-api-production"
]
}
],
"HealthCheck": {
"HealthyThreshold": 10,
"Interval": 30,
"Target": "HTTP:80/healthy.php",
"Timeout": 5,
"UnhealthyThreshold": 2
},
"BackendServerDescriptions": [],
"Instances": [
{
"InstanceId": "i-FIRST-INSTANCEID"
},
{
"InstanceId": "i-SECOND-INSTANCEID"
}
],
"DNSName": "my-name-foo.us-east-1.elb.amazonaws.com",
"SecurityGroups": [],
"Policies": {
"LBCookieStickinessPolicies": [],
"AppCookieStickinessPolicies": [],
"OtherPolicies": [
"AWSConsole-SSLNegotiationPolicy-my-name"
]
},
"LoadBalancerName": "my-name",
"CreatedTime": "2013-08-05T16:55:22.630Z",
"AvailabilityZones": [
"us-east-1d"
],
"Scheme": "internet-facing",
"SourceSecurityGroup": {
"OwnerAlias": "amazon-elb",
"GroupName": "amazon-elb-sg"
}
}
]
}
数据位于LoadBalancerDescriptions.Instances
中
我的loadbalancer称为我的名字
——这是您创建它时选择的名字
下面是一个古老的答案强>
我不熟悉cli工具,但我使用了API
我会检查这两个请求:
嗯 首先请描述lbs以获得负载平衡器及其名称的列表
然后执行
elb description instance health
,以获取负载平衡器后面的实例列表。LB_NAME是elb descripe lbs
输出中第二列的值,如果有人搜索到elb descripe lbs
命令在ELBs启动并运行时为什么不返回任何结果,我意识到我需要将EC2_REGION=eu-west-1
添加到我的环境变量中(或使用elb descripe lbs--region
命令)您可以将AWS命令行工具与一些bash管道一起使用:
elb-describe-instance-health loadbalancer_name --region eu-west-1 | awk '{ print $2 }' | xargs ec2-describe-instances --region eu-west-1 | grep ^INSTANCE | awk '{ print $4 }'
这将为您提供连接到ELB的每个实例的公共DNS名称,您可以分别更改awk列以获取其他详细信息。假设您已经安装了,您可以使用以下命令获取相关的ec2实例ID:
aws elb describe-load-balancers --load-balancer-name my-elb \
| jq -r '.LoadBalancerDescriptions[].Instances[].InstanceId'
这将返回与该ELB关联的ec2 ID
旁注:我建议您进行设置,这样您就不必(尽可能)处理环境变量和区域参数。用实际实例id替换INSTANCEID
aws elb描述负载平衡器--查询“LoadBalancerDescriptions[*]。{ID:LoadBalancerName,InstanceId:InstanceId[?InstanceId=='InstanceId'].InstanceId}[*]。{ID:ID,InstanceId:InstanceId[0]}--输出=text | grep InstanceId | awk'{print$1}'
如果您想查看所有elb和所附的实例,请这样使用:
aws elb describe-load-balancers --query "LoadBalancerDescriptions[*].{ID:LoadBalancerName,InstanceId:Instances[*].InstanceId}[*]. {ELB:ID,InstanceId:InstanceId[*]}" --output=json
结果
[
{
"ELB": "my_name",
"InstanceId": [
"i-0cc72"
]
},
{
"ELB": "my_name2",
"InstanceId": [
"i-02ff5f",
"i-09e467"
]
}
]
如果您知道ELB的名称并希望查看所附内容,请使用以下JMESPath:
aws elb describe-load-balancers --load-balancer-name "my_name" --query "LoadBalancerDescriptions[].{ID:LoadBalancerName,InstanceId:Instances[].InstanceId}[].{ELB:ID,InstanceId:InstanceId[]}" --output=json
结果:
[
{
"ELB": "my_name",
"InstanceId": [
"i-02ff5f72",
"i-09e46743"
]
}
]
在node.js中,您可以使用aws sdk完成此操作
var AWS = require('aws-sdk')
var options = {
accessKeyId: 'accessKeyId',
secretAccessKey: 'secretAccessKey',
region: 'region'
}
var elb = new AWS.ELB(options)
elb.describeLoadBalancers({LoadBalancerNames: ['elbName']}, function(err, data) {
if (err) {
console.log('err: ', err)
}
else {
console.log('data: ', data.LoadBalancerDescriptions)
}
})
data.LoadBalancerDescriptions
是一个数组,数组中的每个元素都是一个具有属性Instances
的对象,该属性具有实例id。,因为我喜欢可以用最少的搜索/替换和复制粘贴来使用的答案
先决条件:已配置aws cli
配置:您的ELB名称
复制粘贴终端
将输出公共IP的列表。您也可以只在“$(…)”中ID的括号内执行查询,以获取实例ID
想要不一样的东西吗?
请随意查看
aws elb describe-load-balancers --load-balancer-name $ELB_NAME
aws ec2 describe-instances --instance-ids $INSTANCE_ID
并相应地更改查询!您可以通过所有负载平衡器实例ID进行循环,如下所示:
while read -r lb ; do echo -e "\n\n start lb: $lb " ; \
echo run cmd on lb: $lb ; echo " stop lb: $lb" ; \
done < <(aws elb describe-load-balancers --query \
'LoadBalancerDescriptions[].Instances[].InstanceId' \
--profile dev|perl -nle 's/\s+/\n/g;print')
并配置了您的安全凭据:
# in aws admin console :
# Services => iam => users => <<your_username>> => Security Credentials => Access Keys
# configure the aws cli
cat << "EOF" > ~/.aws/credentials
[dev]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
[dev]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
[default]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
EOF
aws管理控制台中的#
#服务=>iam=>users=>=>Security Credentials=>Access Key
#配置aws cli
cat~/.aws/证书
[开发人员]
aws\u访问\u密钥\u id=
aws\u密码\u访问\u密钥=
[开发人员]
aws\u访问\u密钥\u id=
aws\u密码\u访问\u密钥=
[默认值]
aws\u访问\u密钥\u id=
aws\u密码\u访问\u密钥=
EOF
aws elb描述负载平衡器——负载平衡器名称“LB_name”| grep“InstanceId”| awk'{print$2}'| sed's/\"//g'DescribeLoadBalancers没有给出连接到loadbalancer的实例列表。这是我的理解。文档中的DescribeLoadBalancers
的示例响应中有一个
。如果这不起作用,请尝试DescribeInstanceHealth
?它需要两个参数—可选的实例列表和负载balancer名称。据我所知,这应该定义。如果省略实例列表,只提供负载平衡器的名称,则返回所有实例。这两个链接现在都已失效。它将为您提供实例ID。aws-elb描述负载平衡器--负载平衡器名称'myelb'--查询负载平衡器描述[*].Instances
这对我非常有用。很明显,您有我们没有的别名elb descripe lbs
在我的控制台中肯定不可用。这在2013年可能是正确的,但今天的命令是aws elb descripe load balancers
和aws elb description instance health
,它为您提供了实例ids.aws-elb描述负载平衡器--负载平衡器名称'myelb'--查询负载平衡器描述[*].Instances
我不明白。首先它将LoadBalancerName
重命名为ID
,然后重命名为ELB
。可以删除--query
参数的第二部分:aws ELB descripe loadBalancer--query“LoadBalancerDescriptions[]。{LoadBalancerName:LoadBalancerName,InstanceId:InstanceId[].InstanceId}”--输出=json
aws elb describe-load-balancers --load-balancer-name $ELB_NAME
aws ec2 describe-instances --instance-ids $INSTANCE_ID
while read -r lb ; do echo -e "\n\n start lb: $lb " ; \
echo run cmd on lb: $lb ; echo " stop lb: $lb" ; \
done < <(aws elb describe-load-balancers --query \
'LoadBalancerDescriptions[].Instances[].InstanceId' \
--profile dev|perl -nle 's/\s+/\n/g;print')
# how-to loop trough all your load balancer names
while read -r lb ; do \
echo -e "\n\n start lb: $lb " ; \
echo run cmd on lb: $lb ; \
echo " stop lb: $lb" ; \
done < <(aws elb describe-load-balancers --query \
'LoadBalancerDescriptions[].LoadBalancerName' \
--profile rnd|perl -nle 's/\s+/\n/g;print')
[profile dev]
output = text
region = us-east-1
[profile dev]
output = text
region = us-east-1
[default]
output = text
region = Global
EOF
# in aws admin console :
# Services => iam => users => <<your_username>> => Security Credentials => Access Keys
# configure the aws cli
cat << "EOF" > ~/.aws/credentials
[dev]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
[dev]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
[default]
aws_access_key_id = <<your_aws_access_key_id_in_the_dev_environment>>
aws_secret_access_key = <<your_aws_secret_access_key_in_dev_env>>
EOF