How can I add a variable within awk command? below is my command:
cat /home/ubuntu/test/copy.txt | awk 'NR==21{print ".host = "$line";"}1'
$line is basically an IP address which is retrieved from a text file. With the above command the output looks like
.host = ;
Any immediate help would be really appreciated.
Format of copy.txt
backend default {
#.host = value; need to be here
.port = "8080";
}
So, the entire environment is in AWS. I have 2 VPC's A and B - A has AD in it, and B has multiple domain joined servers. The domain joining and other AD connections work across VPC peering. I can login using domain admin to the VPC B servers (though there's a little lag) successfully. Within the AD, I have added all the users to remote desktop users group, but the other domain users can login to a server only if their domain credentials are added in the local server remote desktop users group. I know this is not the correct way. When I check the rsop, I see that the domain group policy is being inherited, but when I try to update group policy (gpupdate, there comes the error:
Computer policy could not be updated successfully. The following errors were encountered:
The processing of Group Policy failed. Windows could not resolve the computer name. This could be caused by one of more of the following: a) Name Resolution failure on the current domain controller. b) Active Directory Replication Latency (an account created on another domain controller has not replicated to the current domain controller).
User Policy could not be updated successfully. The following errors were encountered:
The processing of Group Policy failed. Windows could not resolve the user name. This could be caused by one of more of the following: a) Name Resolution failure on the current domain controller. b) Active Directory Replication Latency (an account created on another domain controller has not replicated to the current domain controller).
Can someone help me understand what's the issue here.? Any help would really be appreciated.
I have multiple sites hosted within an IIS server. Let me give you an example like:
demo.trial.com and demo.web.com
Under both these websites, I have created multiple pages like
trial1 under demo.trial.com and page1 under demo.web.com
The intention is that I should be able to browse demo.trial.com/trial1 and demo.web.com/page1. And I am able to do both these from my laptop.
The problem is that I am able to browse demo.trial.com/trial1 within the server without any issues, but browsing demo.web.com/page1 within the server shows me page cant be displayed. The bindings as well as other settings are same in both the websites, but not sure why demo.web.com/page1 is not opening within the server, but opens outside the server.
Any help would really be appreciated.
I am not sure whether this is a right forum to ask question with respect to the infrastructure architecture. But posting the question hoping so:
One of my customer has a web application which is developed in the latest technology of micro services. Kubernetes is the underlying layer. And on top they are using CDN, API hosting etc. Now, from the perspective of public cloud, (azure or AWS), how can I architect the infra here? I have couple of questions with respect to the services that they use. For simplicity, I will talk from Azure POV. It's decided to use the following components from Azure:
Azure CDN, Azure application gateway, Azure FrontDoor.
I am confused on the call flow with these services. From the client (like web browser), when there's a request for the application, ideally the static contents need to be responded back by Azure CDN and the other dynamic contents by checking the container or server. So,this is what I assume on the call flow:
Browser -> Azure Front Door -> Application Gateway -> API Management Microservice -> Other Microservices -> Azure CDN -> Browser
Is this correct? If not, can you guide me to understand a better architecture. Any help would really be appreciated.
I am configuring CloudWatch alarm from the custom metric. Custom metric for disk space is configured, and I can see that every 5 minutes I am able to see the data. But when I set the alarm, the data points are not shown. For example:
Image below is the initial stats for creating an alarm
Image below is after I change the name (or anything else).
Please note that after the edit, the data points are not visible. Just because of this the alarm is in the state of Insufficient data always. Can someone please help me here? Any guidance would really be appreciated.
This is not a troubleshooting question, rather a more generic one. I have read about how AWS S3 is priced - in terms of storage used, data transfer, requests and other features used. And wrt storage used, I see that we're charged for per GB stored per month. For example; In NV region, S3 standard is priced as First 50 TB/Month - $0.023 per GB.
Now, my confusion is in this scenario. Let's say I am storing some data in S3 standard in a given month of 31 days in the following way:
Day 1: Uploading 10 GB data and keeping it for 10 days.
Day 10: Uploading another 15 GB data, making to a total of 25 GB, storing it for 7 days.
Day 17: Deleting 8 GB data, making to a total of 17 GB, keeping it for another 7 days.
Day 24: Deleted another 5 GB data and uploaded 10 GB, making to a total of 22 GB, keeping it for last 7 days.
In this use case, how would I be charged by AWS? A clear cut explanation would be great for my understanding, and would be really appreciated.
I am planning for a use case wherein which my S3 bucket is used by 10 different users. All these users has separate folders within this bucket, to where they'll store their files. Now I want to know how much storage (and there by the cost) does each of these users use . I know there's cost allocation tag, but that's to be used at the bucket level. Is there anyway that I can get to know this cost, maybe using lambda script or any other way? Any help would really be appreciated.
Another question which I think is related to my previous question:
When I do:
nova service-list
nova-conductor and scheduler seems to be enabled, but status is down.
How can I start these services.? I tried:
service nova-compute restart
Redirecting to /bin/systemctl restart nova-compute.service
Failed to restart nova-compute.service: Unit not found.
I have port 5672 opened, and is a single host deployment (node, controller etc reside in the same physical host). Can someone help me at the earliest please.?
As a purpose of testing, I am trying to spin up instances of large size, I mean of 8 vCPU's and greater than 20 GB memory, with 50 GB storage. Physical host has 48 GB RAM and 16 CPU. But everytime receives the same error
Failed to perform requested operation on instance "TestBigVM", the instance has an error status: Please try again later [Error: No valid host was found. There are not enough hosts available.].
In nova compute log, this is the last entry, and can't see any errors:
2019-01-20 22:39:46.447 16511 INFO nova.compute.resource_tracker [req-ded356b5-7a71-451d-a834-db9e696b07dd - - - - -] Final resource view: name=openstack.xxyyzz.com phys_ram=49139MB used_ram=512MB phys_disk=49GB used_disk=0GB total_vcpus=16 used_vcpus=0 pci_stats=[]
Have googled so many links like https://ask.openstack.org/en/question/54326/cant-create-instance-no-valid-host-was-found-nova-compute-is-not-running/ and then also tried virt_type=kvm or qemu, but everything failed.
Is there any alternative or legitimate solution for this.? Stuck in between some task and this is very critical for the assigned task. Any help would really be appreciated.
One of my client has IIS with 2 web sites running, pointing to same app pool and root folder. Lets say those 2 websites as a.com and b.com, pointing to same root folders. Now that b.com works well, but a.com throws 500 internal server error. Browsing within the server gives me the error:
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
Detailed Error Information:
Module IIS Web Core
Notification Unknown
Handler Not yet determined
Error Code 0x80070005
Config Error Cannot read configuration file due to insufficient permissions
Config File \?\C:\Inetpub\vhosts\Server\2\web.config
Physical Path
Logon Method Not yet determined
Logon User Not yet determined
Config Source: -1: 0:
The actual web.config file (under root folder) is somewhere else, and the above config location shown in the error is something else. Can someone guide me how to resolve this issue.? I am not aware of any permissions to this web.config and it was working fine earlier. No such permission changes done recently.
One of my client is having RDS MySQL DB for which write IOPS is high when compared to read IOPS. Tried increasing CPU and Memory to 8 and 61 GB respectively, but still it is the same. This is a small e-commerce application, which is not so popular. I checked DB connections, it always moves from 5 - 20. I am not a DB expert, but I checked Innodb file size and like wise parameters and everything looks the default value.
Can someone give me an idea on what could be the issue - whether its something with respect to infrastructure or maybe because of bad coding/sql queries.? In either case are there any inputs to reduce this write IOPS.
FYI, DB size is 50 GB total with provisioned IOPS up to 1000. Single largest table size is ~ 500 MB.
Any help would be really appreciated.
DB Connections - 
Write IOPS - 
read IOPS - 
0 down vote favorite I have created an IAM policy to deny creating EBS volumes if it is not tagged with both the keys "empname" and "team". The policy is attached to a test user.
When I try to create a volume with no tags defined, it throws error, which is fine. But now when I try to create a volume with any other tag (anything with dynamic value), it creates the volume, which is unexpected.
This is the created IAM policy for the same:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "AllowCreateTaggedVolumes",
"Effect": "Deny",
"Action": "ec2:CreateVolume",
"Resource": "arn:aws:ec2:us-east-1:axxxxxxxxxxx:volume/*",
"Condition": {
"ForAllValues:StringNotLike": {
"aws:RequestTag/empname": "*",
"aws:RequestTag/team": "*"
},
"ForAllValues:StringEquals": {
"aws:TagKeys": [
"empname",
"team"
]
}
}
}
]
}
Is there anyway to restrict to create volume if and only if both these tags are used. It will be great if we can specify tag values to use as well.
I am trying to figure out a solution for this:
I have some user which I created using command useradd. I want to allow this user do whatever he wants on a special location, say /var/www/. He might require to upload or download a file, extract a zipped folder, list the files and folders, change permissions etc.
He should be restricted to do anything else like creating another user/group, using sudo, install/uninstall anything or even accessing other folders or any other. Is it possible to achieve this? Can someone please help me at the earliest.
FYI: OS: Linux, any flavor Platform: AWS
I am trying to complete a poc which needs linux server to connect to MS AD and authenticate using domain creds. After some reference, I felt samba would do good here and so I have installed and configured samba on the linux server.
Whenever I do net ads join -U administrator, it throws the following error.
Host is not configured as a member server.
Invalid configuration. Exiting....
Failed to join domain: This operation is only allowed for the PDC of the domain.
Please let me know where I am going wrong.
I have a domain xyz.com in AWS Directory Service, and I am trying to join an EC2 instance to this domain using PowerShell. I can do it manually but I am trying to automate it so that when the next instance spins up I can use this script to get things done. So, here's my script:
New-DSComputer -ComputerName "test" -DirectoryId directoryid -OrganizationalUnitDistinguishedName "CN=Computers,DC=xyz,DC=com" -Password password
Restart-Computer
I can see my instance name registered in the domain computers (dsa.msc) - but if I open the properties, there's no dns name for the instance. And in the client instance I can see the machine joined to the Workgroup and not the domain xyz.com
Tried after using DNS servers, no success. No logs in event viewer either. How can I join this instance to the domain?
I am querying list of domain joined computers using powershell as below:
dsquery.exe computer > "C:\testfolder\host.txt"
Output is working as expected, but it is as shown below:
"CN=WIN-20CCF3DC8D,OU=Domain Controllers,DC=hosting,DC=xyz,DC=com"
"CN=WIN-20XYS8CM7D,OU=Computers,DC=hosting,DC=xyz,DC=com"
Here I need the following to do.
Either:
I need to edit this file (using powershell): remove all " character, remove all entries where OU not equal to Computers.
Or
I need to get contents of CN to a string but without ".
Have tried using
$contents = Get-Content C:\testfolder\host.txt | Foreach-Object {$_ -replace '"', ""}
but not seems to be working. Can someone please help me on this.?
I know using the AD module for powershell that we can retrieve domain computers details and export them as csv. My domain is in AWS Directory Service, and I have a computer under this domain. I tried Get-ADComputer, but it shows this error:
Get-ADComputer : Unable to find a default server with Active Directory Web Services running.
Is there another way that I can retrieve a domain computer's list in AWS Directory Service domain?
I have configured RD components in one single server (for my poc) and I have done configuring 2 machines as session host. I have created a collection and in that RDP for a machine is published.
When I try to connect to that instance using this published app through web access, I am recieveing an error "This computer cant connect to the remote computer".
But I can very well say that I can take rdp to that machine from RD server.Can anyone support me where I am going wrong?
Update: When I connect with my published remote app, it shows as given below:
Please note that it shows the same server for both target server and gateway server though this is an app published from another remote server. Is this an issue that I am not able to connect to that instance.? Any solution for this?
Update: Whenever I try to access remote server through published remote desktop app, it says "this computer cant connect to the remote computer." In such case I can see "error 1296: Remote Desktop Connection Broker Client failed while getting redirection packet from Connection Broker" in remote desktop gateway server event log.
As per microsoft it is an issue between remote desktop connection broker and the target server, but I can ping and reach the RDCB server from the target computer. Any other solutions or suggestions?
Is there anyway I can clone an amazon RDS MSSQL DB to my ec2 instance local DB? And this has to be done through powershell also.
Basically I need backup of RDS MSSQL DB in sql or bak extension, but that's not achievable in a direct attempt. I was trying to copy the entire database to my local db (ec-2 instance), but failing repeatedly.
Happy to support if you need anymore info.
Can someone please help me on this? Any support would be really appreciated!!
Edit:
Have tried using SQLAzureMW and tables and schemas found to have copied, but not users or roles. Any other alternative?
One of my server reboots every sunday and monday morning, whenever the server is up I need to do a service restart. Actually I call a script to execute itself (everytime manually). What I want to achieve is that it should be possible to invoke this script to get executed every time the server boots up. Is this possible?
The script I execute everytime is something like this:
cd /var/www/activefolder/current && RAILS_ENV=production script/delayed_job start
As you can see this script combines two tasks to finish this.
The server OS is Redhat EL 7. I guess until 6, OS uses init.d whereas RHEL7 introduces a more flexible option called systemd. But not sure whether it is possible to setup as I mentioned. Any help would be really appreciated.
Not sure whether I have given you all the requirements to answer this question. If not, please feel free to ask and I will update my question with the relevant information.