Does Linux Have Server Roles And Service Accounts Too?

Is it possible to limit maximum number of user accounts?

My kernel version is 2.6.32. So It can support 4 billion user accounts now
But I hope to limit the quantity

I believe there is some ways to fix this, but I can't find the solution by myself.

Hi,

In first place i would like to give you a brief about my current setup and my requirement.
I have 80% of the machines with CentOS 6.5 installed rest 20% windows 7. I have OpenLDAP v2.4 for user authentication.
In linux environment all linux machines are configured in such a way that whenever a user logs on to system with the help of OpenLDAP credentials he gets a default desktop rather Mandatory Profile is implemented in this setup. Now my goal is to enable OpenLDAP users logon to windows machines and get the same Mandatory profile setup done here. So far SambaPDC helped me to authenticate LDAP accounts on Windows clients machines but the Manadatory profile thing isn't working well at all due to posix acls issue. Now i am working with Windows Server 2012 r2 server so as to integrate with OpenLDAP for getting this Mandatory profile thing done. Is there any way i can sync all OpenLDAP accounts to Active directory or rather make my windows server a member server for OpenLDAP domain.

Please help me on this. Thanks in advance!!

hi guys,

busy doing a small project with a centos7 server and virtualbox.
currently i have a login to the physical server called sninja

i have three partitions created for each of my virtual machines
sninja owns the directories for each vm...and root is the primary group...now lets say i wanted to have other users perform functions on my vm's ..ssh in,rsync data into the vm etc...

whats the best way to address security and user accounts etc?

what i was thinking:

create a group called Myusers1,then assign the users to that group and then make the group the primary group of the accessed directories etc

is this the right way to go about it? any ideas or help really appreciated...

Hi,
my server centos 6 32bit, server config. 12core 16gb ram,only http and mysql(innodb).
promble: httpd service taking 90% cpu usage.
below is top command result and my.cnf conf..
some times site hangs.
any solution on this issue

top - 16:11:13 up 6 days, 5:38, 3 users, load average: 31.50, 30.64, 24.67
Tasks: 259 total, 35 running, 224 sleeping, 0 stopped, 0 zombie
Cpu(s): 61.2%us, 7.9%sy, 0.0%ni, 30.5%id, 0.2%wa, 0.1%hi, 0.1%si, 0.0%st
Mem: 15982704k total, 6111196k used, 9871508k free, 365788k buffers
Swap: 6291448k total, 0k used, 6291448k free, 2648472k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1500 apache 20 0 81188 55m 4660 R 47.7 0.4 3:53.51 httpd
1167 apache 20 0 80184 55m 4680 R 36.3 0.4 13:37.91 httpd
942 apache 20 0 86352 61m 4708 R 34.3 0.4 12:59.12 httpd
1157 apache 20 0 84272 59m 4704 R 34.3 0.4 13:04.18 httpd
1307 apache 20 0 86316 60m 4684 R 34.3 0.4 10:33.57 httpd
1363 apache 20 0 80164 55m 4676 R 34.3 0.4 7:07.59 httpd
1386 apache 20 0 86336 60m 4676 R 34.3 0.4 5:58.29 httpd
1620 apache 20 0 80164 54m 4660 R 34.3 0.3 3:01.97 httpd
937 apache 20 0 84084 59m 4712 R 32.4 0.4 13:04.31 httpd
1147 apache 20 0 84260 59m 4696 R 32.4 0.4 12:21.55 httpd
1158 apache 20 0 84084 60m 4688 R 32.4 0.4 12:39.18 httpd
1159 apache 20 0 84288 59m 4696 R 32.4 0.4 13:12.04 httpd

my.cnf conf. file
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
set-variable=max_allowed_packet=100M
set-variable=max_connections=500
set-variable=key_buffer_size=100M
#set-variable=key_buffer_size=64M
set-variable=sort_buffer_size=64M
#set-variable=innodb_buffer_pool_size=32M
set-variable=innodb_buffer_pool_size=1024M
#set-variable=innodb_buffer_pool_size=2048M
#set-variable=table_cache=1024
set-variable=table_cache=256
set-variable=thread_cache_size=16
set-variable=query_cache_size=16M
#set-variable=innodb_log_file_size=100MB
set-variable=interactive_timeout=60
set-variable=wait_timeout=60

Hello - This is my first interaction with Linux. I recently purchased a Raspberry Pi 2 and am running the full version of Raspbian. I intend to use the Pi as my PLEX media server however I have been unsuccessful in mounting my NAS. I've read a number of guides on how to accomplish this but have been striking out on all accounts. I was hoping someone could help me with what information I should be adding.

NAS - Synology Diskstation DS212j - 192.168.5.195
Linux device - Raspberry Pi 2 - Raspbian - 192.168.5.186
Router - D-Link DIR-655 - 192.168.5.1

I've been accessing the Pi via ssh on my MacBook PRO - 192.168.5.188

Thanks for any assistance you can provide.

I need to be able to create new user accounts and make sure they're forced to reset their password upon first login, also if they don't log in within 4 days of the account creation their account must automatically lock. How do I accomplish this?

thank you.

Hi all

This is bothering me too much, please tell me how to change IP address of remote machine while using ssh successfully.

I follow these steps:
1. connect to remote server using 'ssh root@server'
2. Edit '/etc/sysconfig/network-scripts/ifcfg-eth0' file
3. issue 'service network restart' command... (at this point ssh connection gets hanged)
4. Break from hanged ssh connection (<ENTER>~.)
5. Wait for some time to let service restart
6. Then finally, ssh with new ip address.

All is fine, but last time, i did something wrong while assigning new IP address, and after service restart, remote server didn't get new ip address - and now i cant connect to remote server.

Fortunately, i had a friend there, who helped me correct the problem so that i can connect again.

But what to do when there is no one to help? Is there other way i should approach this problem?

Thanks

i had a problem, i installed and config squid on fedora complete but when i start service squid not success it was display job for squid.service fail. See "systemctl status squid.service" and "journalctl -xe" for details please help me

How to transfer the file from Windows to Linux server, while using below code I getting issue.

Command:- $ scp C:\Users\patil20\Desktop\NAV.1184.test112345.dat username@hostname:/u/spatil20/test.da

ERROR in Linux:- ssh: C: Name or service not known

thanks,
santosh

It's a nuissance tHat "Keyring", nobodY "callEd it", BUt it is almost popping up ruining the IMAP passwords, with 3 mail accounts, it is a real mess!!!!

DOes anybody know HOW to GET RID it OFF???