Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.

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Why might the Jenkins user not have permission to access the Docker unix socket?

I've added the jenkins user to the docker group thinking that it would allow Jenkins jobs to run Docker commands. If I switch to the jenkins user, I can verify it works (manually): ubuntu@hostname:~$ ...
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3answers
39 views

Why is my server saying “No such file or directory” error for a file that is clearly there

ritwik@indus ~/perforce $ ls p4d ritwik@indus ~/perforce $ ./p4d -bash: ./p4d: No such file or directory You understood the problem right ? Why is this happening ? How do I fix it ? ritwik@indus ...
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0answers
9 views

sftp account with 2 chrooted folders

I want to create an sftp server with chroot, where each account has access to 2 areas: \ftp ---\release to customer --------\release customer a --------\release customer b ---\data from ...
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0answers
7 views

Apache2 APR Not Acceptable [on hold]

This is the error message when running "./configure --enable-so": ./configure --enable-so checking for chosen layout... Apache checking for working mkdir -p... yes checking for grep that handles ...
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0answers
21 views

iptables - dropping specific established connections after X hours

Is there a way with iptables to drop specific established connections after X hours? We have an application with limited connection support, and occasionally we see some tcp sessions that shouldn't ...
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1answer
35 views

Postfix - Relay all incoming mail to another host

I have 2 hosts, one is mail1.example.com The other is mail2.example.com Both servers have it own public ipv4 ips (But in different geo locations) Domain name has mail1 MX as mail server. I ...
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1answer
52 views

What should an Ops person know about hardware for an interview? [on hold]

It is easy to find typical interview questions for sysadmins and network engineers, but when I search for hardware engineer (hardware operations engineer) I can't even find one site with typical ...
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0answers
9 views

Dependency error installing Oracle Client SDK on Linux

Trying to install Oracle Client and the SDK on Red Hat Linux EL6: [~]: sudo rpm -ivh oracle-instantclient12.1-basiclite-12.1.0.2.0-1.x86_64.rpm Preparing... ...
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2answers
58 views

Automatically selecting default in Unix terminal

I'm aware that a command such as something -y will force a yes answer on any response back from the terminal, but I'm having problems with getting Ansible to automate the process of configuration. ...
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0answers
13 views

Load JIRA on DigitalOcean

I'm attempting to load JIRA onto a DigitalOcean Droplet and can run through the Express Install; however, each time when I try to access via the web browser I can never seem to access the system. ...
2
votes
1answer
26 views

Tool to show permissions of path in Linux?

Is there a tool in Linux that will take a path such as /var/log/httpd/error_log, and print the permission for each branch of the path, i.e.: /var: root:root, 0755 ...
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0answers
13 views

How to Install PHP 5.3.7 On Godaddy VPS using SSH [on hold]

I have bought a New VPS from Godaddy but they supported PHP 5.3.5 and then 5.4.34 but i want PHP 5.3.7 On my VPS so please help me that how can i do this using Putty SSH Client Regards Shahaan ...
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11 views

What is a sane way to deal with changed configuration files and/or ABI breakages after package updates while using a CM software?

First of all: Full disclosure, I asked the same thing on the Salt ML but thus far the response rate has been zero. Also, gathering a broader spectrum of opinions and experiences never hurts. So I hope ...
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0answers
17 views

Issue loading .profile

I am setting up a user profile for a specific application and I am getting an error that I have yet to encounter before. The error happens on with the loading of the .profile file, but the odd thing ...
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0answers
16 views

ssh connection issue while connecting to the remote server [on hold]

I am using jsch library to connect the remote server. But i am getting algorithm negotiation failed exception. The below is the output of the ssh. Any idea to resolve this? Connecting to x.x.x.x ...
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1answer
10 views

How can I tell Linux to ignore disk partitions it's already discovered?

I'm running libvirt with QEMU/KVM and I have disk images for the VMs in LVM logical volumes. Naturally, many of the guest VMs use LVM for their disks, too. I ran partprobe on my hypervisor and it ...
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0answers
9 views

limit sites permissions on server

I am hosting multiple PHP sites on my linux server with LAMP, I want to restrict each sites' permissions not to modify any file outside site folder directory, like most shared hosting companies do, do ...
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1answer
28 views

chroot with sftp on centos 6.5

I'm trying to get sftp working with proper chroot configuration on Centos 6.5 server. As for now I get: sftp user@000.000.000.000 User@000.000.000.000's password: Write failed: Broken pipe Couldn't ...
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0answers
20 views

JS and CSS file are not loading due to missing forward slash

My client moved to new server which nginx & percona server. Problem is the forward slash is being removed from end of the url. as you can see in the picture: therefor the design files such as ...
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2answers
32 views

Safety of sshpass and SFTP to dynamic host

I have a server with dedicated IP address A and a server with dynamic IP address B (routing via no-ip.org). A uploads a backup to B via sshpass: export SSHPASS=*** sshpass -e sftp **@** << ! ...
9
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2answers
939 views

Linux ssh: allow public-key authentication without giving user read rights to private key

Users logged in on my Linux server should be able to ssh to a specific remote machine with a default account. The authentication on the remote machine uses public key, so on the server the ...
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2answers
93 views

Synchronize clock with NTP while online, and with RTC while offline?

Is there a existing mechanism that synchronizes a linux system with NTP while online, and with a predictably drifting RTC while offline? We operate remote "collectors": embedded Linux systems that ...
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0answers
15 views

React OS on Chrome book [on hold]

I stumbled on React OS . Its a linux distro that intends to be binary compatible with windows. It also uses code from the wine project that helps to run windows apps on linux. I have a chrome book and ...
0
votes
1answer
12 views

Supervisord - ini file error on CentOS

I installed Supervisor on CentOS 6.5 and currently experiencing some weird error that I can't seem to fix. I created a supervisord.conf file in /etc directory and call supervisor like this: $ ...
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0answers
20 views

Direct port 443 to 8443 on using ip6tables only? [duplicate]

I am running CentOS 5, running Kernel version 2.6.18 & ip6tables v1.3.5. IPv6 is enabled. I would like to use ip6tables to direct traffic from port 443 to the internal port 8443. We did this on ...
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1answer
23 views

Which difference between /etc/aliases and virtual_alias_maps in Postfix?

Which difference between /etc/aliases and virtual_alias_maps in Postfix and where should I put aliases from local accounts to virtual user accounts (i.e. from root to postmaster@example.com)?
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0answers
32 views

One subdomain to two IP addresses depends on port [duplicate]

I have one subdomain (sub.domain.com) and it redirects user (by SRV record in DNS zone) to specified IP and port. On other IP I have web hosting service and I'd like to have website on the same ...
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votes
0answers
32 views

Successful SSLv3 handshake on Jboss 1.6 despite disabling SSLv3 from server.xml

Reaching out to the Jboss gurus out there, i have disabled the SSLv3 from my Jboss application server, but i am still able to validate a successful sslv3 handshake, ... the only protocol i have ...
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1answer
25 views

Linux - Disable routing but allow bridging

I have a Linux server that is running the KVM hypervisor. I have multiple bridges on this server (that are on different VLANS). Is there an "easy" way to make sure that bridge hoping (i.e. routing ...
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votes
1answer
44 views

Why are --older-than and --younger-than killall options missing in RHEL/CentOS?

I've experienced this issue in cleaning up scripts written by developer who were writing for Ubuntu systems, as well as ServerFault questions like this. Is there any reason the -o, -y (--older-than ...
0
votes
1answer
51 views

httpd Virtual hosts not routing files to domain

I am running Cent OS and currently have 2 different domains setup correctly on 1 server(I set these up via cPanel years ago) I wish to add a third but do not have a cPanel license, ideally I do not ...
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1answer
15 views

Squid proxy redirect to search if unable to resolve hostname

When not using a proxy, a hostname that does not exist results in an NX returned from the DNS server, and the web browser (Firefox in this case) is smart enough to attempt a search instead. However, ...
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1answer
21 views

Debian Active Directory to LDAP migration

These days I am working on LDAP and Active Directory migration. I want to migrate to LDAP but I cannot get passwords from Active Directory. I want to seemlesly migrate to LDAP, and I want a solution ...
5
votes
1answer
165 views

Managing puppet modules with git

I have a puppet/foreman server running on Debian 7 for managing my systems. I use the community version 3.7 of puppet and foreman 1.6.0. I use directory environments. At the moment I use a rather ...
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0answers
16 views

Shared hosting - One website resolves but the other doesn't [on hold]

Basically, I have a shared hosting account and I am trying to set up multiple websites on this account. I have set up the first website, and, everything is working fine. The problem is that when I ...
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2answers
28 views

How to monitor Linux server backup execution with Zabbix?

I have more CentOS and Debian servers, where backup is configured to be executed every night. How can I use Zabbix to monitor these backups? I'd need an alarm, when backup files would not be created ...
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0answers
32 views

add authorized_key not working with ldap login

I i used to login to my server with LDAP username and password. After login if i check the command, whoami -> "my_username" is displayed properly But if I check in /etc/passwd file there is no ...
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0answers
10 views

(OpenShift) Permission denied when installing my own cartridge from my github repository

I froked MySQL cartridge from official github repo and I added some modifications to support utf8mb4 encoding. this is my cartiridge on github : ...
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2answers
76 views

Scalable Multi Server E-mail setup using Linux/Dovecot

One of my clients ask me to set-up a multi server, scalable email system. I can configure multiple servers to send emails. By using PHP Mysql based login script, users will be redirected to each ...
2
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0answers
29 views

Passing through RDMA network devices to docker containers

I'm wanting to passthrough infiniband to a docker container so that I can run some high performance apps over ipoib and use rdma. Currently, I'm doing this with xen virtual machines. Now I'm looking ...
4
votes
2answers
218 views

How can I verify if TLS 1.2 is supported on a remote web server from the RHEL/CentOS shell?

I'm on CentOS 5.9. I'd like to determine from the linux shell if a remote web server specifically supports TLS 1.2 (as opposed to TLS 1.0). Is there an easy way to check for that? I'm not seeing a ...
0
votes
1answer
52 views

All my harddrives are around 10 MB/s read/write

I have a HP N54L MicroServer (AMD N54L, 4GB RAM) running on Lubuntu (doesn't really matter happens on Ubuntu too). In there are 4 HDDS each 1 TB, Samsung HD103SJ. I tried every single BIOS setting ...
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0answers
12 views

Character map broken during FTP transfer

I have recently migrated a web server running an old PHP shop, which runs a little tricky: let me explain first. If you want to post that on thedailywtf or codinghorror, you're welcome. The shop ...
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votes
0answers
20 views

AD Authentication with SAMBA, Winbind and SSS

I'm having trouble authentication with AD to a SAMBA share on a linux server. Authentication appears to be working, but only halfway... [root@myserver ~]# wbinfo -a my_ad_user%password123 ...
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2answers
40 views

Add remote host to known_hosts file without prompt [duplicate]

I wrote some scripts and wish to add a remote host to my known_hosts file without any interaction. I can run a command like ssh -o "StrictHostKeyChecking no" root@10.x.x.x which will add the remote ...
0
votes
1answer
32 views

Why process wasn't killed after closing SSH connection

I launched this command via SSH on a Debian server: watch --precise -n 1 top -b -n 1 -p 27330 | tail -n 1 | awk "{print \$9}" >> 27330.log & After a while I quit my terminal. When I ...
1
vote
1answer
27 views

apache2 fails when run through service but not when run directly

I have apache running just fine on start up and manually using /etc/init.d/apache2 start and I'm ok with that, but one of the server managers is used to using the service command, and for some reason ...
0
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1answer
23 views

Increase partition size in debian server

I have a debian server instance and I need to increase the root partition size of it. I installed the parted program and took a backup first. Then I attached another 2GB volume to the instance. When ...
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0answers
23 views

What's invisibly eating my disk space? [duplicate]

I'm running a fairly clean ubuntu 14.04 server installation, and I occasionally start having trouble with web apps apparently running out of disk space in the root partition, however, I can't see ...
0
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1answer
28 views

Postfix to Postfix relaying

I've got a (possibly unusual) situation with using Postfix to relay mail to another Postfix mail server that then needs to send the email out. I've read plenty of tutorials and seen instructions for ...