Latest Server related questions

Score: 0
Zimbra Setup, can receive emails, but I cannot send emails
cn flag

i installed zimbra on my Cloudserver (Digital ocean) i can receive emails from other external emails but sending is an issue, I have also set up DKIM, SPF, DMARC for the emails but i still cannot send out emails. Anything seems to be the issue? Please what are possible Resolutions/?

Score: -2
GoogleUser247-2 avatar
CentOS 8 server: /bin/ld: cannot find -lstdc++
cn flag

I get an error running make. I have never seen this error. There are no other errors except this one. I am seriously baffled. Help is appreciated.

Score: 1
samtech 2021 avatar
AntiVirus for AWS Linux 2 EC2
th flag

Is there antivirus software recommended to install AWS Linux 2 system?what would you recommend we install for that?

In my infra, I'm using the following AWS services:: EC2 (Seoul, Ohio, and Virginia), Load Balancers, Target Groups, SecurityHub, Guard Duty, Lambda, Jenkins, RDS,k S3 , SES, Route53, CloudWatch, CloudTrail, ElasticSearch, CloudFront, DynamoDb, SNS, VPC, ACL, WAF, IAM.

I think Sometimes ...

Score: 1
Ross Bush avatar
Application Pool set to AlwaysRunning does not Auto Start The Hosted Service
bd flag

I have configured an pool to auto-start and never sleep. I am having problems with the auto-start. My understanding is that a thread pool worker will be started after a recycle when that happens I would assume the application entry point would be called, however, that does not seem to be working.

When the application is deployed, I see the following log entries under the "IIS AspNetCore Modeule"  ...

Score: 1
thatleviathan avatar
One IP in subnet not reachable from outside, but others work fine
mp flag

We had virtual host crash the other day, which caused a few VMs to reset and come back online. One of them, after coming back up, is not reachable on the network from outside the subnet it lives on. However, it is reachable from things in the same subnet. Nothing was changed on the VM other than it rebooted and migrated to a different host; other VMs on the same host are not having any network issues ...

Score: 1
The latest centos:8 docker image cannot run yum
ls flag

With the latest centos:8 docker.hub image I cannot run yum. All yum commands fail with the error message Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist.

This can be reproduced like so:

$ docker pull centos:8
8: Pulling from library/centos
Digest: sha256:a27fd8080b517143cbbbab9dfb7c8571c40d67d534bbdee55bd6c473f432b177
Status: Image  ...
Score: 1
questionto42standswithUkraine avatar
When writing csv from CF to bucket: 'with open(filepath, "w") as MY_CSV:' leads to "FileNotFoundError: [Errno 2] No such file or directory:"

I get this error FileNotFoundError: [Errno 2] No such file or directory when I try to write a csv file to the bucket, using a csv writer that loops over batches of data. The full insight into the Cloud Function logs around that error:


File "/workspace/main.py", line 299, in write_to_csv_file with
open(filepath, "w") as outcsv: FileNotFoundError: [Errno 2] No such
file or directory: 'gs://MY_BUCKET/MY_ ...
Score: 0
How to add values to ansible-playbook instead of overwrite it?
uz flag

As per today, I have the following role, this role simulate a basic installation of the product:

- name: Install Server.msi primary_appserver
  ansible.windows.win_package:
    path: C:\product.msi
    log_path: C:\InstallProduct.log
    arguments:
     ADDLOCAL=DB,Agent
    state: present
  become: true
  become_method: runas
  vars:
    ansible_become_user: "{{ ansible_user }}"
    ansible_become_ ...
Score: 0
That Brazilian Guy avatar
Block `//xmlrpc.php`
cn flag

I'm getting tens of thousands of (quite probably malicious) hits on Apache which are bringing the server down. All hits look like this on the Apache log:

[30/Jan/2022:21:57:41 +0000] "POST //xmlrpc.php HTTP/1.1" 200 630 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4240.193 Safari/537.36"

(Note the double slash. I don't know what it means.)

I hav ...

Score: 0
Zippy avatar
Phpmyadmin only showing logo, how to allow the login screen
gh flag

I have a digitalocean openlightspeed wordpress install that has the phpmyadmin on it. However, when I go to the url it only shows the landing page and not the login. Is there a config section to allow a port or allowed host?

I am connecting to this page from another network and not accessible from the domain or public IP.

enter image description here

Score: 0
Sys8dmin avatar
How to add ANY ANY Cisco ACL Rule?
nc flag

I want to test if my core switch is blocking traffic using ACLs as we are having an issue with devices downstream of our Cisco L3 switch.

When trying to access our firewall, etc using a non standard port from any VLAN "below" the switch it fails.

I want to try to add a test ANY ANY ACL rule to the switch to test my theory that the Cisco switch is blocking traffic via ACLs.

Network Diagram: https://imgur. ...

Score: 0
what ipv4 packets normally carry IP options
ro flag

What packets normally carry IP options? Is it packets with some routing information, e.g. ospf or bgp, or it could be any arbitrary packet, and thus the presence of IP options is determined by an application?

For example ping -T ... will generate an ICMP packet with Timestamp option, so I'm assuming that IP options are driven by applications, but I could be wrong.

I've read page 14 of https://datatra ...

Score: 0
Enforce TLS1.2 in sssd client
cm flag

In one of our environments Linux servers are set up with sssd / OpenLDAP for OS login. To support older servers our OpenLDAP server has to support TLSv1.0 and TLSv1.1 still.

RedHat 8 does no longer support TLS levels below TLSv1.2, and thus the standardized /etc/sssd/sssd.conf failed to connect to the LDAP server.

Error message:

sssd_be[1236697]: Could not start TLS encryption. error:14094410:SSL rout ...
Score: 0
vrms avatar
Kubernetes - PersitentVolume vs StorageClass
de flag

I have this example of a Persitent Volume from this article on postgresql via kubernetes statefulset

kind: PersistentVolume
apiVersion: v1
metadata:
  name: pgdata
  labels:
    app: postgres
    type: local
spec:
  storageClassName: sc001
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/var/data"

This seems to works but have trouble with the logic.

  1. as far as I ...

Score: 0
kordhaldrum avatar
Find what is using disk space in CentOS 7 (du vs df vs lsof)
cn flag

I have a server, CentOS 7, that show disk usage on DF way higher than you can see on DU and I trying to understand why

DF shows 38GB used DU shows 14GB

There is no mount point on any folder

Checking LSOF for deleted files, there are couple, but nothing big, around 2GB files deleted, what leave us with around 20GB used by "only god knows what"

Any idea how to identify it?

DF

Filesystem           Size  Us ...
Score: 0
Ranjandas avatar
systemd-nspawn - run a host binary with network isolation
us flag

I am trying to run a binary sitting on the host machine using systemd-nspawn with networking support. I am trying to run multiple copies of the binary where each instance would have its IP address.

I tried various networking options like --network-veth, --network-zone etc. While these options are setting up the necessary veth pairs and bridge devices etc, the container doesn't seem to be getting a ...

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