Latest Server related questions

Score: 0
Chayan Ghosh avatar
Double port forwarding kubernetes + docker
au flag

Summary:

I have a docker container which is running kubectl port-forward, forwarding the port (5432) of a postgres service running as a k8s service to a local port (2223). In the Dockerfile, I have exposed the relevant port 2223. Then I ran the container by publishing the said port (-p 2223:2223)

Now when I am trying to access the postgres through psql -h localhost -p 2223, I am getting the following er ...

Score: 0
papakota avatar
How to stop BIND9 from being an authoritative DNS server for a host?
cz flag

Until recently I've been using BIND9 on my on-premises server (Ubuntu 16.04 w/LAMP). But then I decided to move one of my site to remote 3rd party hosting. Obviously, I changed the DNS servers on site's registrar's website and the site works fine. The problem is that on my LOCAL machine (where BIND9 is), it still points me to my local installation of that host.

Score: 1
Sid avatar
Enable https on EC2 Instance
jp flag
Sid

I have an elastic public IP for my EC2 instance. I have an Nginx server running on it (and nodejs as a backend server). I'd like to enable HTTPS access to my server.

My questions:

  1. Can I create an SSL certificate (not self-signed) using just my elastic public IP?

  2. If not, my department has a domain. let's say, https://www.example.com. How can I enter the record (and where?) so that https://www.example.c ...

Score: 0
Abdulaziz Ghalib avatar
HPE StoreAll 8200 Gateway Storage - showing UptimeOverThreshold
cn flag

When checking the health of the HPE StoreAll 8200 Gateway Storage, the output of running this command ibrix_health -l shows UptimeOverThreshold. Could you please let me know what does it means, should I reboot the system to reset the system threshold?

Below you can find an example of the output I received after running the command in the CLI.

Host Summary Result

Host ---- Result ---- Type ---- Stat ...

Score: 0
Who or what is permitted membership of a Mail Enabled Security Group
es flag

I'm wanting to know a complete list of permitted objects that can be members of the Mail-Enabled Security Group. Is there some official documentation that lists these? Google hasn't been my friend today, and I don't have access to the portal.

Score: 1
Kamil avatar
Huawei HG8245Q2 connected with other router in bridge mode and WiFi with internet access
it flag

I have Huawei HG8245Q2 router with GPON WAN and 4 ethernet ports and powerful WiFi module.

Behind this router I have second (Mikrotik) router and a L2TP server on it.

Unfortunately - Huawei router in "normal" configuration does not allow me to have L2TP server behind it (I tried with DMZ with no success and there is no option like "VPN-passthru" like I saw in some other routers).

I called my ISP tech s ...

Score: 0
ITnewbie avatar
Mapping FQDN to IP and Port number in HAProxy
cn flag

I have HAproxy in front of my K8s cluster. It works perfectly by IP address and port number.

frontend kubernetes-test-frontend
    bind 10.138.1.187:30030
    mode tcp
    option tcplog
    default_backend kubernetes-test-backend

backend kubernetes-test-backend
    mode tcp
    option tcp-check
    balance roundrobin
    server k8master1 10.138.1.181:30030 check
    server k8master2 10.138.1.182:3 ...
Score: 1
Why does nsupdate fail with "operation canceled"?
cn flag
nh2

I'm trying to dynamically update a DNS server using nsupdate, running nsupdate -k mykey.private -d -v ./my-nsupdate-commands.txt.

But I get the error:

Communication with 192.0.2.0#53 failed: operation canceled

In which cases can nsupdate result in operation canceled?


Full output:

Creating key...
Sending update to 192.0.2.0#53
Outgoing update query:
;; ->>HEADER<<- opcode: UPDATE, statu ...
Score: 0
Aminovic avatar
What is meant by collapse CNAME?
us flag

While I was working on a certain DNS traffic management tool (Akamai) I found a checkbox to enable Collapse CNAMEs. I did not find any useful resources on this topic. What does it mean and how it works? Any idea?

Score: 0
shortmort37 avatar
file ownership and permissions issue with phpBB on Ubuntu 20.04 VPS
co flag

I am porting a phpBB site from a shared server to a VPS, running Ubuntu 20.04. I have configured apache2 for virtual domains, since I have more than one. Here's where the boards are:

    /var/www/example1.com/public_html/phpbb
    /var/www/example2.com/public_html/phpbb

I want there to be a single user "userA" that makes changes to both sites, so I've made a sftp group "sftp_users" and added userA t ...

Score: 0
Juraj Bezručka avatar
Renew Letsencrypt certificate on Amazon AWS Linux AMI with nginx
ua flag

I have production and test instances on AWS Linux AMI. On the test instance I am unable to renew letsencrypt certificate with certbot because it requires ACME2 and I am still using old certbot to avoid problems (I use --no-self-upgrade switch, otherwise it used to fail - I found the working setup and have not touched it since).

Production instance probably won't be able to renew certificate beca ...

Score: 0
Vitas avatar
copying many folders with not inherited permissions
jp flag

So we have this folder with hundreds of user folders (not sure what they are used for but there is mostly Desktop, Documents and Favorites). We need to back them up to another disk, but the problem is that the ACL is not inheriting from above folder and all subfolders have permissions only to their owners which are various users. The only way to access those folders is to change owner for example to adm ...

Score: 0
Rajesh Dutta avatar
Kubernetes network polices are not enforced unless the network-plugin daemon-sets are restarted. Why?
br flag

I have only one network policy in my cluster in prod namespace that allows only ingress rules. The network plugin is weave-net. No rules are configured for Egress so I am expecting egress traffic will be blocked. But until I restart the network daemon-set pods the rule has no effect. I know by best practices I should have default ingress and egress rules. But I want to understand the reason of this beha ...

Score: 0
John McAulay avatar
Centos 7 server performance problems. High load
cn flag

I have a Centos 7 VPS at HostGator that has been very slow lately. HostGator have not been overly helpful in diagnosing the problem, insisting that everything is ok.

The server is a 4 core VPS with 8GB of RAM.

I figured out my cPanel backups are at least partially to blame, but I'm certain something else is amiss. I found they were basically running all day, because they were constantly pausing whil ...

Score: 0
zippy-flop avatar
What's the number in square brackets, in the maillog for?
ke flag

Here are some lines of my maillog. What are those numbers in square brackets telling me? Is that a pid for each individual email i get?

So [11342] for example, belongs to the same message right?

postfix/smtpd[11342]:   connect from
postfix/smtpd[11342]:   Anonymous   TLS
policyd-spf[11350]: prepend Received-SPF:
postfix/smtpd[11342]:   NOQUEUE:    reject:
postfix/smtpd[11342]:   disconnect  from
postf ...

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