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Subscribe for instances list update in GCE autoscaled group


Subscribe for instances list update in GCE autoscaled group

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Subscribe for instances list update in GCE autoscaled group
Tag : development , By : Schmidt
Date : November 25 2020, 07:22 PM

Any of those help To the best of my knowledge there is no method to subscribe to a list of instances in an managed instance group.
You will need to poll the managed instance group manually to determine the list of current instances.

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How to automatically add an autoscaled EC2 instance to a Security Group?


Tag : amazon-web-services , By : user178709
Date : March 29 2020, 07:55 AM
hop of those help? Create a security group called web. For the sake of an example, lets say the id of that group is: sg-7aa91911
Create a security group called db. Add a new rule to the db security group for port 1433 with the source of sg-7aa91911
{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "test tempalte",

  "Parameters" : {
    "KeyName" : {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instance",
      "Type" : "String"
    }
  },

  "Mappings" : {
    "RegionMap" : {
      "us-east-1"      : { "AMI" : "ami-7f418316" },
      "us-west-1"      : { "AMI" : "ami-951945d0" },
      "us-west-2"      : { "AMI" : "ami-16fd7026" },
      "eu-west-1"      : { "AMI" : "ami-24506250" },
      "sa-east-1"      : { "AMI" : "ami-3e3be423" },
      "ap-southeast-1" : { "AMI" : "ami-74dda626" },
      "ap-northeast-1" : { "AMI" : "ami-dcfa4edd" }
    }
  },

  "Resources" : {
    "WebServerGroup" : {
      "Type" : "AWS::AutoScaling::AutoScalingGroup",
      "Properties" : {
        "AvailabilityZones" : { "Fn::GetAZs" : "" },
        "LaunchConfigurationName" : { "Ref" : "LaunchConfig" },
        "MinSize" : "1",
        "MaxSize" : "10",
        "DesiredCapacity" : "1"
      }
    },

    "LaunchConfig" : {
      "Type" : "AWS::AutoScaling::LaunchConfiguration",
      "Properties" : {
        "InstanceType" : "m1.small",
        "KeyName" : { "Ref" : "KeyName" },
        "SecurityGroups" : [ {"Ref" : "websg"} ],
        "ImageId" : { "Fn::FindInMap" : [ "RegionMap", { "Ref" : "AWS::Region" }, "AMI" ]}
      }
    },
    "Ec2Instance" : {
      "Type" : "AWS::EC2::Instance",
      "Properties" : {
        "KeyName" : { "Ref" : "KeyName" },
        "ImageId" : { "Fn::FindInMap" : [ "RegionMap", { "Ref" : "AWS::Region" }, "AMI" ]},
        "UserData" : { "Fn::Base64" : "80" }
      }
    },

    "websg" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable SSH and access, 8080, and 80",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "8080", "ToPort" : "8080", "CidrIp" : "0.0.0.0/0"},
          {"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
          {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "0.0.0.0/0"}
        ]
      }
    },
    "dbsg" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Port opened only to security group",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "1433", "ToPort" : "1433", "SourceSecurityGroupName" : {"Ref" : "websg"}
          }
        ]
      }
    }
  }
}

How do update an EC2 autoscaled instance?


Tag : amazon-ec2 , By : Thx1138.6
Date : March 29 2020, 07:55 AM
To fix this issue Use Puppet or Chef to rapidly change production settings and then rotate the AMIs from time to time to keep AMIs updated so your configuration management app does not need to apply too much changes on startup.

Multiple instances of celerybeat for autoscaled django app on elasticbeanstalk


Tag : python , By : jumpingmattflash
Date : March 29 2020, 07:55 AM
To fix this issue In case someone experience similar issues: I ended up switching to a different Queue / Task framework for django. It is called django-q and was set up and working in less than an hour. It has all the features that I needed and also better Django integration than Celery (since djcelery is no longer active).
Django-q is super easy to use and also lighter than the huge Celery framework. I can only recommend it!

Subscribe to a List of Group / Private Chats in AWS AppSync


Tag : development , By : ThF
Date : March 29 2020, 07:55 AM
wish of those help You are correct. The only two ways to do this out of the box is to:
Subscribe to each conversation using an argument. Subscribe to all conversations and filter messages on the client.

Kubernetes Rolling Update not obeying 'maxUnavailable' replicas when redeployed in autoscaled conditions


Tag : deployment , By : yogan
Date : March 29 2020, 07:55 AM
I hope this helps . After looking at this question, I decided to try this with test Environment where I wanted to check If it doesn't work.
I have setup the metrics-server to fetch the metrics server and set a HPA. I have followed the following steps to setup the HPA and deployment:
[root@ip-10-0-1-176 ~]# kubectl get hpa
NAME         REFERENCE               TARGETS   MINPODS   MAXPODS   REPLICAS   AGE
php-apache   Deployment/php-apache   49%/50%   1         10        10         87m

[root@ip-10-0-1-176 ~]# kubectl get pods
NAME                              READY   STATUS    RESTARTS   AGE
load-generator-557649ddcd-6jlnl   1/1     Running   0          61m
php-apache-75bf8f859d-22xvv       1/1     Running   0          91s
php-apache-75bf8f859d-dv5xg       1/1     Running   0          106s
php-apache-75bf8f859d-g4zgb       1/1     Running   0          106s
php-apache-75bf8f859d-hv2xk       1/1     Running   0          2m16s
php-apache-75bf8f859d-jkctt       1/1     Running   0          2m46s
php-apache-75bf8f859d-nlrzs       1/1     Running   0          2m46s
php-apache-75bf8f859d-ptg5k       1/1     Running   0          106s
php-apache-75bf8f859d-sbctw       1/1     Running   0          91s
php-apache-75bf8f859d-tkjhb       1/1     Running   0          55m
php-apache-75bf8f859d-wv5nc       1/1     Running   0          106s
[root@ip-10-0-1-176 ~]# kubectl set image deployment php-apache php-apache=hpa-example:v1 --record
deployment.extensions/php-apache image updated

[root@ip-10-0-1-176 ~]# kubectl get pods
NAME                              READY   STATUS              RESTARTS   AGE
load-generator-557649ddcd-6jlnl   1/1     Running             0          62m
php-apache-75bf8f859d-dv5xg       1/1     Terminating         0          2m40s
php-apache-75bf8f859d-g4zgb       1/1     Terminating         0          2m40s
php-apache-75bf8f859d-hv2xk       1/1     Terminating         0          3m10s
php-apache-75bf8f859d-jkctt       1/1     Running             0          3m40s
php-apache-75bf8f859d-nlrzs       1/1     Running             0          3m40s
php-apache-75bf8f859d-ptg5k       1/1     Terminating         0          2m40s
php-apache-75bf8f859d-sbctw       0/1     Terminating         0          2m25s
php-apache-75bf8f859d-tkjhb       1/1     Running             0          56m
php-apache-75bf8f859d-wv5nc       1/1     Terminating         0          2m40s
php-apache-847c8ff9f4-7cbds       1/1     Running             0          6s
php-apache-847c8ff9f4-7vh69       1/1     Running             0          6s
php-apache-847c8ff9f4-9hdz4       1/1     Running             0          6s
php-apache-847c8ff9f4-dlltb       0/1     ContainerCreating   0          3s
php-apache-847c8ff9f4-nwcn6       1/1     Running             0          6s
php-apache-847c8ff9f4-p8c54       1/1     Running             0          6s
php-apache-847c8ff9f4-pg8h8       0/1     Pending             0          3s
php-apache-847c8ff9f4-pqzjw       0/1     Pending             0          2s
php-apache-847c8ff9f4-q8j4d       0/1     ContainerCreating   0          4s
php-apache-847c8ff9f4-xpbzl       0/1     Pending             0          1s
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