public async Task <List <SA_AutoScalingGroup> > GetEnvironmentAutoScalingGroupList(bool ignorColor = false)
{
var lstSaGroups = new List <SA_AutoScalingGroup>();
var response = await client.DescribeAutoScalingGroupsAsync();
var lstGroups = ignorColor ?
response.AutoScalingGroups.FindAll(o => o.Tags[0].Value.IndexOf(environment.ToString()) == 0) :
response.AutoScalingGroups.FindAll(o => o.Tags[0].Value.IndexOf(environment + "-" + color) == 0);
//var lstGroups = response.AutoScalingGroups.FindAll(o => o.Tags[0].Value.Substring(0, o.Tags[0].Value.IndexOf("-")) == environment.ToString());
var jumpBox = response.AutoScalingGroups.Find(
o => o.Tags[0].Value.IndexOf(environment.ToString()) >= 0 && o.Tags[0].Value.IndexOf("Jump") > 0);
if (jumpBox != null && lstGroups.Find(o => o.Tags[0].Value.IndexOf("Jump") > 0) == null)
{
lstGroups.Add(jumpBox);
}
foreach (var group in lstGroups)
{
var saGroup = new SA_AutoScalingGroup()
{
AutoScalingGroupName = group.AutoScalingGroupName,
AutoScalingGroupARN = group.AutoScalingGroupARN,
Name = group.Tags[0].Value,
//Status = group.Status,
MaxSize = group.MaxSize,
MinSize = group.MinSize,
DesiredCapacity = group.DesiredCapacity,
CreatedTime = group.CreatedTime,
RunningInstances = group.Instances.Count
};
lstSaGroups.Add(saGroup);
}
var results = lstSaGroups.OrderBy(o => o.Name).ToList();
return(results);
}
static bool WaitForStackHealthy(string stackId)
{
Console.WriteLine("Getting scaling group from {0}...", stackId);
DescribeStackResourceResponse response;
response =
cloudFormationClient.DescribeStackResourceAsync(
new DescribeStackResourceRequest
{
StackName = stackId,
LogicalResourceId = "AutoScalingGroup",
}
).Result;
string autoScalingGroupId = response.StackResourceDetail.PhysicalResourceId;
Console.WriteLine(
"Instances from scaling group {0}...",
autoScalingGroupId
);
var response2 = autoScalingClient.DescribeAutoScalingGroupsAsync(
new DescribeAutoScalingGroupsRequest
{
AutoScalingGroupNames = { autoScalingGroupId },
}
).Result;
var scalingGroup = response2.AutoScalingGroups[0];
var targetGroup = scalingGroup.TargetGroupARNs[0];
var instances = scalingGroup.Instances;
Console.WriteLine("Checking to make sure instances come up OK...");
bool success = false;
TimeSpan timeWaited = TimeSpan.Zero;
TimeSpan timeout = TimeSpan.FromMinutes(5);
TimeSpan sleepTime = TimeSpan.FromSeconds(5);
while (!success && timeWaited <= timeout)
{
success = CheckInstancesHealthy(targetGroup, instances);
if (!success)
{
SleepWithAnimation(sleepTime);
timeWaited += sleepTime;
}
}
Console.WriteLine("Instances {0}", success ? "SUCCEEDED" : "FAILED");
return(success);
}
public virtual void failover()
{
try
{
// Modify the autoscaling group to remove the AZ affected which is the AZ passed in the input
// Find the autoscaling group that this is deployed into
// Note: This changes the asynchronous call to a synchronous one
DescribeAutoScalingGroupsResponse autoScalingGroupsResponse = AUTO_SCALING_CLIENT.DescribeAutoScalingGroupsAsync().GetAwaiter().GetResult();
if (autoScalingGroupsResponse != null && autoScalingGroupsResponse.AutoScalingGroups.Count > 0)
{
// Note: This assumes an Auto Scaling group exists; no error checking for readability
AutoScalingGroup autoScalingGroup = autoScalingGroupsResponse.AutoScalingGroups[0];
string autoScalingGroupName = autoScalingGroup.AutoScalingGroupName;
// Find all subnets in the availability zone passed in the input
DescribeSubnetsResponse subnetsResult
= EC2_CLIENT.DescribeSubnetsAsync(new DescribeSubnetsRequest()
{
Filters = new List <Amazon.EC2.Model.Filter> {
new Amazon.EC2.Model.Filter {
Name = "vpc-id",
Values = new List <string> {
vpcId
}
}
}
}).GetAwaiter().GetResult();
IList <string> desiredSubnetsForASG = new List <string>();
foreach (Amazon.EC2.Model.Subnet subnet in subnetsResult.Subnets)
{
if (!string.Equals(subnet.AvailabilityZone, azId, StringComparison.OrdinalIgnoreCase))
{
desiredSubnetsForASG.Add(subnet.SubnetId);
}
}
List <string> desiredSubnets = new List <String>(autoScalingGroup.VPCZoneIdentifier.Split(new[] { ',' }, StringSplitOptions.None));
var tempList = new List <String>(desiredSubnets);
foreach (var subnet in desiredSubnets)
{
if (!desiredSubnetsForASG.Contains(subnet))
{
tempList.Remove(subnet);
}
}
desiredSubnets = tempList;
Console.WriteLine("Updating the auto scaling group " + autoScalingGroupName + " to remove the subnet in the AZ");
// Note: This turns the asynchronous call into a synchronous one
UpdateAutoScalingGroupResponse updateAutoScalingGroupResponse
= AUTO_SCALING_CLIENT.UpdateAutoScalingGroupAsync(new UpdateAutoScalingGroupRequest
{
AutoScalingGroupName = autoScalingGroupName,
VPCZoneIdentifier = string.Join(",", desiredSubnets)
}).GetAwaiter().GetResult();
}
// Find all subnets in the availability zone passed in the input
// Note: This turns the asynchronous call into a synchronous one
DescribeSubnetsResponse describeSubnetsResult
= EC2_CLIENT.DescribeSubnetsAsync(new DescribeSubnetsRequest
{
Filters = new List <Amazon.EC2.Model.Filter> {
new Amazon.EC2.Model.Filter {
Name = "vpc-id",
Values = new List <string> {
vpcId
}
},
new Amazon.EC2.Model.Filter {
Name = "availabilityZone",
Values = new List <string> {
azId
}
}
}
}).GetAwaiter().GetResult();
IList <string> desiredSubnetsForAddingNewNacl = new List <string>();
foreach (Amazon.EC2.Model.Subnet subnet in describeSubnetsResult.Subnets)
{
desiredSubnetsForAddingNewNacl.Add(subnet.SubnetId);
}
//Find all the network acl associations matching the subnets identified above
// Note: This turns the asynchronous call into a synchronous one
DescribeNetworkAclsResponse describeNetworkAclsResult
= EC2_CLIENT.DescribeNetworkAclsAsync(new DescribeNetworkAclsRequest()
{
Filters = new List <Amazon.EC2.Model.Filter> {
new Amazon.EC2.Model.Filter {
Name = "association.subnet-id",
Values = (List <string>)desiredSubnetsForAddingNewNacl
}
}
}).GetAwaiter().GetResult();
IList <NetworkAclAssociation> desiredAclAssociations = new List <NetworkAclAssociation>();
// Note: This assumes a Network ACL is present for readability
IList <NetworkAclAssociation> networkAclsAssociatedWithSubnet = describeNetworkAclsResult.NetworkAcls[0].Associations;
foreach (string subnetId in desiredSubnetsForAddingNewNacl)
{
foreach (NetworkAclAssociation networkAcl in networkAclsAssociatedWithSubnet)
{
if (string.Equals(networkAcl.SubnetId, subnetId, StringComparison.OrdinalIgnoreCase))
{
desiredAclAssociations.Add(networkAcl);
}
}
}
//create new network acl association with both ingress and egress denying to all the traffic
CreateNetworkAclRequest createNetworkAclRequest = new CreateNetworkAclRequest();
createNetworkAclRequest.VpcId = vpcId;
// Note: This turns the asynchronous call into a synchronous one
CreateNetworkAclResponse createNetworkAclResponse = EC2_CLIENT.CreateNetworkAclAsync(createNetworkAclRequest).GetAwaiter().GetResult();
string networkAclId = createNetworkAclResponse.NetworkAcl.NetworkAclId;
createNetworkAclEntry(networkAclId, 100, "0.0.0.0/0", true, "-1", createPortRange(0, 65535), RuleAction.Deny);
createNetworkAclEntry(networkAclId, 101, "0.0.0.0/0", false, "-1", createPortRange(0, 65535), RuleAction.Deny);
// replace all the network acl associations identified for the above subnets with the new network
// acl association which will deny all traffic for those subnets in that AZ
Console.WriteLine("Creating new network ACL associations");
replaceNetworkAclAssociations(desiredAclAssociations, networkAclId);
//fail over rds which is in the same AZ
// Note: This turns the asynchronous call into a synchronous one
DescribeDBInstancesResponse describeDBInstancesResult = RDS_CLIENT.DescribeDBInstancesAsync().GetAwaiter().GetResult();
IList <DBInstance> dbInstances = describeDBInstancesResult.DBInstances;
string dbInstancedId = null;
foreach (DBInstance dbInstance in dbInstances)
{
if (string.Equals(dbInstance.DBSubnetGroup.VpcId, vpcId, StringComparison.OrdinalIgnoreCase) &&
(string.Equals(dbInstance.AvailabilityZone, azId, StringComparison.OrdinalIgnoreCase)) &&
dbInstance.MultiAZ && dbInstance.StatusInfos.Count == 0)
{
dbInstancedId = dbInstance.DBInstanceIdentifier;
}
}
// we want to fail over rds if rds is present in the same az where it is affected
if (!string.IsNullOrEmpty(dbInstancedId))
{
RebootDBInstanceRequest rebootDBInstanceRequest = new RebootDBInstanceRequest();
rebootDBInstanceRequest.DBInstanceIdentifier = dbInstancedId;
rebootDBInstanceRequest.ForceFailover = true;
Console.WriteLine("Rebooting dbInstanceId to secondary AZ " + dbInstancedId);
// Note: This turns the asynchronous call into a synchronous one
RDS_CLIENT.RebootDBInstanceAsync(rebootDBInstanceRequest).GetAwaiter().GetResult();
}
}
catch (Exception exception)
{
Console.WriteLine("Unkown exception occured " + exception.Message);
}
}
