drewrockshard's questions

It's been awhile since I've posted a question on here. Need some assisteancew getting my sed to work. I've tried all kinds of forms of sed options, but can't seem to get this working. I have a file that has "192.*" all over it, and need any type of IP address that has any resemblence of "192" in it, all deleted, but I need to literally keep everything else. Something that looks like:

+ : root : 192.,local,10.
+ : root : local,192.
+ : root : local,192.,10.
+ : root : local,10.33.45.34,192.168.22.100
+ : root : local,192.168.22.100,10.33.45.34
+ : root : local,192.168
+ : root : local,192.168,10.

Item's I've tried:

sed -e 's/,192.*$//g' -e 's/,192.*,//g' -e 's/192.,//g'
sed -e 's/,192.*$//' -e 's/,192.*,//' -e 's/192.,//' 
sed -e 's/,192.*$//' -e 's/,192.*,//' -e 's/192.*,//' 
sed -e 's/,192.*$//' -e 's/,192.*,//' -e 's/192.,//'

I've just about gone crazy, so some help is appreciated.

Thanks in advance.

I'm a bit new to using LDAP, especially non AD LDAP. We use RedHat Directory Server and was trying to do an LDAP query (filter specifically) that would retrieve all the users (and their attributes) from a cn that uses an nisNetgroupTriple attribute with specific user names in it. This is how we manage the "superusers" and then everyone else gets dropped into a specific cn based on their needs. So, my question is, how do you search and filter using ldapsearch to retrieve the users AND attributes (uid, sn, givenName, mail) from a cn. Here's some sample output from an ldapsearch I did as a test:

# ldapsearch -xLLL -h server-p 389 -D "cn=Directory Manager" -b "cn=linux,dc=example,dc=org" \* + -W
Enter LDAP Password:
dn: cn=linux,dc=example,dc=org
nisNetgroupTriple: (,user1,)
nisNetgroupTriple: (,user2,)
nisNetgroupTriple: (,user3,)
cn: linux
objectClass: top
objectClass: nisNetgroup
memberNisNetgroup: linux
description: Linux

What I need to do is get the attributes for each user: user1, user2, user3, such as:

# ldapsearch -xLLL -h server -p 389 -D "cn=Directory Manager" -b "dc=example,dc=org" -x '(&(objectClass=posixAccount)(uid=user1))' -W
Enter LDAP Password:
dn: uid=user1,ou=People,dc=example,dc=org
userPassword:: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
givenName: User
sn: One
loginShell: /bin/false
gidNumber: 1000
uidNumber: 10054
mail: user1@localhost
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: inetorgperson
objectClass: posixAccount
uid: user1
cn: User One
homeDirectory: /home/user1

Can't seem to find anything that makes sense on the internet as to how to do this (if it can be done). Additionally, I might not have a full understanding of this portion of LDAP, which could be why 1) I can't find anything and 2) I don't know how to figure it out myself.

Any help is appreciated.

Can anyone explain this, because I have done everything from regenerating keys, to "leaving" and rejoining the domain (Centrify) for an SSH host that I can't seem to get to by a single client. All other clients are able to access this host, except one. Weirdly, though, I can SSH to the host from the client if I use the IP address:

$ ssh ddecker@host
Connection closed by 10.0.0.250
$ ssh [email protected]
Password:
[ddecker@host ~]$

The only thing I have on this is inside /var/log/messages on the host, I get the following when trying to use the hostname:

fatal: accept_ctx died [preauth]

I've tried removing /etc/krb5.keytab, but then Centrify doesn't start; so I reverted it back. Really not sure what is going on as to why all other clients can connect by name and this since client can only connect via IP.

UPDATE #1:

Here is the output of ssh -v ddecker@host:

debug1: Reading configuration data /etc/centrifydc/ssh/ssh_config
debug1: /etc/centrifydc/ssh/ssh_config line 52: Applying options for *
debug1: Connecting to host [10.0.0.250] port 22.
debug1: Connection established.
debug1: identity file /home/ddecker/.ssh/id_rsa type 1
debug1: identity file /home/ddecker/.ssh/id_rsa-cert type -1
debug1: identity file /home/ddecker/.ssh/id_dsa type -1
debug1: identity file /home/ddecker/.ssh/id_dsa-cert type -1
debug1: identity file /home/ddecker/.ssh/id_ecdsa type -1
debug1: identity file /home/ddecker/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9
debug1: match: OpenSSH_5.9 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9
debug1: Offering GSSAPI proposal: gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-gex-sha1-A/vxljAEU54gt9a48EiANQ==,gss-group1-sha1-A/vxljAEU54gt9a48EiANQ==,gss-group14-sha1-A/vxljAEU54gt9a48EiANQ==
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: Doing group exchange

debug1: Calling gss_init_sec_context
debug1: Delegating credentials
Connection closed by 10.0.0.250

Maybe someone that knows more about DHCP and network that can help me out with this one. I've been thrown for a look with this for awhile now, so I'm reaching out to the ServerFault community.

We migrated a server out of our production datacenter as we are repurposing the system. In our local lab, I PXE booted the server into our environment and it PXE booted fine and loaded the image just fine. However, after loading the image, it couldn't download the kickstart. I noticed from the DHCP logs, it was trying to get a new IP address and couldn't. What it seems to look like is, it PXE boots using a local PXE/DHCP server and then once it loads up and then tries to DHCP again, it reaches out to a random server outside our lab environment. Here are the DHCP logs:

dhcpd: DHCPDISCOVER from 00:11:22:33:44:55 via 10.6.246.1
dhcpd: DHCPOFFER on 10.6.246.9 to 00:11:22:33:44:55 via 10.6.246.1
dhcpd: DHCPREQUEST for 10.6.246.9 (10.6.247.236) from 00:11:22:33:44:55 via 10.6.246.1
dhcpd: DHCPACK on 10.6.246.9 to 00:11:22:33:44:55 via 10.6.246.1
xinetd[3010]: START: tftp pid=26359 from=10.6.246.9
in.tftpd[26360]: RRQ from 10.6.246.9 filename /pxelinux.0
in.tftpd[26360]: tftp: client does not accept options
in.tftpd[26361]: RRQ from 10.6.246.9 filename /pxelinux.0
in.tftpd[26362]: RRQ from 10.6.246.9 filename /pxelinux.cfg/44454c4c-5800-104e-8057-b9c04f4b4e31
in.tftpd[26363]: RRQ from 10.6.246.9 filename /pxelinux.cfg/01-00-11-22-33-44-55
in.tftpd[26364]: RRQ from 10.6.246.9 filename //images/RHEL-6.4-x86_64/vmlinuz
in.tftpd[26365]: RRQ from 10.6.246.9 filename //images/RHEL-6.4-x86_64/initrd.img
dhcpd: DHCPDISCOVER from 00:11:22:33:44:55 via 10.6.246.1
dhcpd: DHCPOFFER on 10.6.246.9 to 00:11:22:33:44:55 via 10.6.246.1
dhcpd: DHCPREQUEST for 10.88.254.102 (10.88.254.22) from 00:11:22:33:44:55 via 10.6.246.1: ignored (not authoritative).

Things to note are:

1. 00:11:22:33:44:55 is the MAC address I am referring to
2. In the DHCP server, the subnet 10.6.246.0 is set as authoratative
3. In the DHCP server, the option routers section is set to 10.6.246.1, which is the default gateway - which in our network, can get to anything on the network

Does this seem weird or is it just me? I feel like it's reaching out to something that it shouldn't be.

Also - that 10.88.254.102 and .22 servers - those are not pingable from anywhere, however, when I run an nmap on them they show a squid-http servers (which would be proxy servers), however, my network team tells mem those don't have an ARP entry so they are "down".

I'm at a loss here.

I'm a linux user, however, I'm provided with a Windows laptop in the office. I could fire up a small web server with PHPmyadmin or even upload to a remote system and import into a database, however, for what I'm doing, I'd like to know if there is anything easier?

What I have is a MySQL Dump file of a database. I need to know if there is anything out there that can read in a MySQL dump file and then allow me to perform selects (to lookup data), without my having to have an actual MySQL database. Almost like a virtual MySQL database as a file sort of thing. Basically, I'm trying to cross reference data, and I don't exactly want to create a new database, do the import, and then read the data like that. I will if I have to, but was just wondering if there was some sort of program that would read my dump file and let me just view it as if I was connected to the database.

Does anyone know any good book(s) on learning the ins and outs of Solaris's SDS (Solaris Disk Suite) and its corresponding commands (metastat, metadb, meta*)? I'm looking to invest some time into this for work.

I'm having a weird issue with resize2fs. I've performed all the commands and they all have been successful, however, my filesystem is the same size as it was before:

[oracle@server~]$ df -h /backup
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg2-lv_backup
                      985G  973G  2.4G 100% /backup

[root@server~]# pvcreate /dev/cciss/c0d4p1 
  Physical volume "/dev/cciss/c0d4p1" successfully created

[root@server~]# lvdisplay /dev/mapper/vg2-lv_backup | awk '/VG Name/{print $3}'
vg2

[root@server~]# vgextend vg2 /dev/cciss/c0d4p1 
  Volume group "vg2" successfully extended

[root@server~]# vgdisplay vg2 | awk '/Free *PE /{print $5}'
200

[root@server~]# lvextend -l +200 /dev/vg2/lv_backup 
  Extending logical volume lv_backup to 1000.78 GB
  Logical volume lv_backup successfully resized

[root@server~]# e2fsck -Cfp /dev/vg2/lv_backup 
e2fsck 1.39 (29-May-2006)
backups: clean, 1488/131072000 files, 258919596/262144000 blocks

[root@server~]# e2fsck -f /dev/mapper/vg2-lv_backup
e2fsck 1.39 (29-May-2006)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
backups: 1488/131072000 files (20.1% non-contiguous), 258919596/262144000 blocks

[root@server~]# resize2fs /dev/mapper/vg2-lv_backup
resize2fs 1.39 (29-May-2006)
Resizing the filesystem on /dev/mapper/vg2-lv_backup to 262348800 (4k) blocks.
The filesystem on /dev/mapper/vg2-lv_backup is now 262348800 blocks long.

The problem is that the initial filesystem was 1TB (almost) and the new one is 800GB, so the new logical volume should now be around 1.8TB. From here, you can see that both the drives are part of the same volume groups:

[root@server~]# pvs -v | grep vg2
    Scanning for physical volume names
  /dev/cciss/c0d0p1 vg2  lvm2 a-   1000.00G     0  1000.00G 4cjtXN-uQ60-5ZvU-dih7-m0Lw-5IQy-RYxmOb
  /dev/cciss/c0d4p1 vg2  lvm2 a-    800.00M     0   800.84M X2f4CR-QI7M-XO5g-TQVh-e3sa-ebu8-MxaqXY

However, it is not reflected:

[root@server~]# lvs -v | grep vg2
    Finding all logical volumes
  lv_backup             vg2     2 -wi-a- 1000.78G  -1  -1 253  73                                         IDEeg7-USRJ-OZLd-fC5t-kCxi-leHq-zfwoNF

Any suggestions?

I have a single domain. The main application serves from a single subdomain app.domain.com. I need a simple permenant redirect to redirect users that go to app.domain.com to be redirected to newapp.domain.com. This is so that the users can update the bookmarks. This is temporary and I would like it to be at the apache level (directory level) and do not want to do this via htaccess files; e.g. I want to make this change in httpd.conf.

When doing an "Erratum Search" on the RHN site, and provide a specific package name, I get a result. The result is returned, and I have a single RHBA number, and I click on the link. The next page is a list of bugs and issues under "Description". What I would like to know is what package this affects? Are the packages under "Packages" the affected packages, or are the packages under "Packages" the "fixed" packages and need to be installed?

Thanks.

Does anyone know the difference of ps -awx vs. ps -awwx?

I'm tracking down some processes, and I see significantly more information when I add an additional "w". Does this work like in other cases (such as SSH debugging) when you issue multiple "v", the more "verbose" the output is? I didn't see anything in the man pages about this.

Does anybody know of a way to clone a live linux system? I have a live installation running a production site. Problem is, I'm needing to clone it (without bring it down), and then move it over (restore) to a virtual machine. I'm basically migrating from physical hardware to virtual hardware.

Has anyone had any issues with logrotate before that causes a log file to get rotated and then go back to the same size it originally was? Here's my findings:

Logrotate Script:

/var/log/mylogfile.log {
    rotate 7
    daily
    compress
    olddir /log_archives
    missingok
    notifempty
    copytruncate
}

Verbose Output of Logrotate:

copying /var/log/mylogfile.log to /log_archives/mylogfile.log.1
truncating /var/log/mylogfile.log
compressing log with: /bin/gzip
removing old log /log_archives/mylogfile.log.8.gz

Log file after truncate happens

[root@server ~]# ls -lh /var/log/mylogfile.log
-rw-rw-r--  1 part1 part1 0 Jan 11 17:32 /var/log/mylogfile.log

Literally Seconds Later:

[root@server ~]# ls -lh /var/log/mylogfile.log
-rw-rw-r--  1 part1 part1 3.5G Jan 11 17:32 /var/log/mylogfile.log

RHEL Version:

[root@server ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux ES release 4 (Nahant Update 4)

Logrotate Version:

[root@DAA21529WWW370 ~]# rpm -qa | grep logrotate
logrotate-3.7.1-10.RHEL4

Few Notes:

• Service can't be restarted on the fly, so that's why I'm using copytruncate
• Logs are rotating every night, according to the olddir directory having log files in it from each night.

Never seen this used before in BASH:

pidfile=${PIDFILE-/var/run/service.pid}

The part I've never seen/used before is the ${PIDFILE- part.

I have a VMWare VM on an ESX host that has LVM partitions. I've configured kdump with very basic configuration - ext /dev/mapper/logical-volume-name and path /data/crash. When I force a system crash, it loads the kdump kernel and it shows the logical volumes, loads them and shows that it is saving the memory dump, and takes about 30 seconds to export about 2.5GB, which is normal. The problem is, when it reboots, it comes back up, but no network connectivity (can't get out, and can't get in via network), however, all network services are running and a simple reboot (no crash) fixes this. Additionally, another issue - the vmcore memory dump saved was not actually saved. I've tested this on a VM on VirtualBox and this works running a CentOS equivalant of the RHEL server that is currently in production that is currently having these kdump issues.

Any ideas or things I should look in to?

Is there a way to get kernel panic information to log to either the local machine via a log file (I'm assuming possibly no, since it's panic'd) or would I have to enable remote syslog or netdump to remotely forward this over to another system?

Sometimes, we either don't get a screenshot, or the system is automatically rebooted (via ASR, etc), so I need another way to retrieve the kernel dump information.

This might belong on the stackoverflow.com website, but I don't think so, because this has to do with Apache configuration.

I'm getting the an error:

Notice: Undefined index: PATH_INFO

This is a stock Apache configuration, and I thought that you could just use the AcceptPathInfo On in httpd.conf:

<Directory "/srv/http">
    Options Indexes FollowSymLinks
    AllowOverride All
    AcceptPathInfo On
    Order allow,deny
    Allow from all
</Directory>

What exactly do I have configured wrong here?

I have a file that exported a bunch of file names that need to be removed. I need to know how to go about removing each file without having to issue it one at a time at the command line.

I've thought about just cating it inside a for loop, which would probably work, but wanted to know if there was an easier, or even a better solution to doing this.

Thanks.

I am in the need of converting a local SVN repository to GIT. I know how to convert a remote SVN repository to git, however, I only have the local repositories; they are no longer hosted. How would I go about converting a local SVN repo to git?

What I tried was this:

git svn clone -s file://data/svn/repo/ /data/git/repo.git

Error was:

E: 'trunk' is not a complete URL and a separate URL is not specified

Bear with me on this one, since I'm pretty new to LVM.

I have a server with about 5 LVM's on them. They consist of 5PV, using their own VG's and their own corresponding LV's. My issue is, I'm needing to know if it is possible to shrink one of the LV's a bit, and give that extra space to a different LV and expand the other LV. Here's a glimpse of my configuration:

LV That I want to shrink by 30GB
PV /dev/cciss/c0d1p4 VG vg4 lvm2 [76.88 GB / 0 free]

LV That I want to expand by 30GB from the previous LV
PV /dev/cciss/c0d1p2 VG vg2 lvm2 [46.57 GB / 0 free]

/dev/cciss/c0d1p4 is a mount point called /u03 and /dev/cciss/c0d1p2 is a mount point called /backup. They are on two different volume groups. I'll show the output of pvdisplay, vgdisplay, and lvdisplay for these LVMs:

pvdisplay Output

  --- Physical volume ---
  PV Name               /dev/cciss/c0d1p4
  VG Name               vg4
  PV Size               76.89 GB / not usable 3.25 MB
  Allocatable           yes (but full)
  PE Size (KByte)       4096
  Total PE              19682
  Free PE               0
  Allocated PE          19682
  PV UUID               aMo010-TaQn-ehsK-29R9-aFat-HGK4-vwMPMA

  --- Physical volume ---
  PV Name               /dev/cciss/c0d1p2
  VG Name               vg2
  PV Size               46.57 GB / not usable 1008.00 KB
  Allocatable           yes (but full)
  PE Size (KByte)       4096
  Total PE              11922
  Free PE               0
  Allocated PE          11922
  PV UUID               ML2gdx-wkwW-C2tZ-rX5b-hVhQ-xZhq-C1cIFx

vgdisplay Output

  --- Volume group ---
  VG Name               vg4
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               76.88 GB
  PE Size               4.00 MB
  Total PE              19682
  Alloc PE / Size       19682 / 76.88 GB
  Free  PE / Size       0 / 0   
  VG UUID               wbVABu-LR3G-1c5f-qfz8-3eLD-vTEq-1FFrfo

  --- Volume group ---
  VG Name               vg2
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               46.57 GB
  PE Size               4.00 MB
  Total PE              11922
  Alloc PE / Size       11922 / 46.57 GB
  Free  PE / Size       0 / 0   
  VG UUID               aVO4SZ-RVFU-FJfq-QTKi-NBDZ-rWiB-keb41m

lvdisplay Output

  --- Logical volume ---
  LV Name                /dev/vg4/lv_u03
  VG Name                vg4
  LV UUID                edVjf2-wPmY-wRUL-QwIT-PJ1Q-m128-rppA3a
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                76.88 GB
  Current LE             19682
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:3

  --- Logical volume ---
  LV Name                /dev/vg2/lv_backup
  VG Name                vg2
  LV UUID                n2PaAn-S8jl-yQdu-HVyR-pZcI-X9S9-GgeQ4K
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                46.57 GB
  Current LE             11922
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:5

Any help would be appreciated.

I'm having issues where when I'm in a regular SSH terminal, with $TERM set to xterm-256color, and the terminal width is very small (narrow) in Linux Screen. I'm running Arch Linux. When I'm in the default SSH terminal (detached from a screen session), then my terminal width is fine, it goes all the way across. However, when I initiate screen, my terminal width narrows by a lot, and all my files are either wrapped or truncated. It goes from about 1400 columns to 80 columns; it's pretty bad. Any ideas to how to have it work in screen the way it works in the regular terminal? I'm not able to use screen the way I need to until I get this resolved.