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Search found 199 results on 8 pages for 'rhel5'.

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  • Solaris to Linux conversion: Use VxFS or GFS?

    - by w00t
    We're a Solaris shop looking at RedHat Enterprise Linux and one of the things we're wondering is if we should keep Veritas Volume Manager + FileSystem or go with LVM+ext3 or RedHat's preferred cluster filesystem solution, GFS. One of the things we like about Veritas is that it can use Veritas Volume Replicator to have a remote copy of important filesystems. This functionality seems to be missing from RedHat, DRBD doesn't seem to be packaged in RHEL... So my questions are: Does anybody use VxFS/VxVM/VVR on Linux? Thoughts, experiences? Comparison with LVM+ext3? Anybody using GFS? Thoughts, experiences? Do you do remote replication for disaster recovery, and if so, how? Is there a standard RedHat way?

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  • Exploratory Question for Security Admins (/etc/passwd + PHP)

    - by JPerkSter
    Hi everyone, I've been seeing a few issues lately on a few of my servers where an account gets hacked via outdated scripts, and the hacker uploads a cPanel / FTP Brute forcing PHP script inside the account. The PHP File reads /etc/passwd to get the usernames, and than uses a passwd.txt file to try and brute force it's way in to 127.0.0.1:2082. I'm trying to think of a way to block this. It doesn't POST anything except "GET /path/phpfile.php", so I can't use mod_security to block this. I've been thinking of maybe changing permissions on /etc/passwd to 600, however I'm unsure how this will result in regards to my users. I was also thinking of rate-limiting localhost connections to :2082, however I'm worried about mod_proxy being affected. Any suggestions?

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  • Connection to mysql server in SYN_SENT

    - by Sunil
    We are facing a strange problem from last few days between our application server and database server(Mysql): connection to database server from application server hangs in SYN_SENT state and after that we are not able to make any connection to database server on mysql port(3306). When we checked the netstat output on database server its in SYN_RECV state. What I can figure out is mysql server is receiving the SYN request and responding also and its not reaching to the client hence SYN_RECV at server side and SYN_SENT at client side. I think SYN_SENT state should go after some time and because of this other db connection attempts to same server should not hang. Does anybody have any idea how can we resolve this issue? Out setup details : Application server: RHEL 5.4, kernel-release = 2.6.18-164.el5, x86_64 Database server: Mysql Version : 5.1.49 RHEL 5.4, kernel-release = 2.6.18-164.el5, x86_64

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  • Web Server with phpMyAdmin

    - by Kumar P
    We have web development company, We using RHEL 5 as local (proxy) server with few windows XP client machines. Now i want to make my Server machine as Web Server ( LAN only ), with mysql and phpMyAdmin. I installed httpd,php,mysql by yum. How to install phpMyAdmin ? And Where i want to installl ? Now i want to make my client machines can create php files in web folder, Also use mysql and phpMyAdmin. How can i do it ? Give me clear steps to do it .

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  • System-install-packages missing

    - by Kumar P
    i am using RedHat Enterprise Linux 5.1. When i use add-remove software in application menu, i think, that i wrongly uninstalled something. so after reboot that menu item missing. Also i can't use system-install-packages in terminal. When i double click rpm package it open as archive. And i specifically open it as software installer by open with other application, it saying error /usr/bin/system-install-packages missing. Help me to solve this problem ...

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  • SATA drive not recognized when installing RHEL 5.1 on PowerEdge R410

    - by Rachel
    Here's my setup: Dell R410 with Perc S100 (software) raid controller on an Intel ICH10R chipset The first problem is that the Perc S100 is only supported on windows. I'm trying to install RHEL 5.1. It boots from the cdrom, but later the installer can't see the cdrom or hard drive. Both are connected to the on-board sata controller. The only options in the R410 bios for SATA are ATA or RAID. I don't need raid, I just want a single drive setup.

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  • Simplest way to expose UNIX mailboxes via IMAP or POP3 on RHEL 5.6

    - by db2
    We've got a web server running RedHat Enterprise Linux 5.6, and it has all the usual local UNIX mailboxes. As is typical, the root mailbox gets all the cron output, logwatch results, etc. I'd like an easier way to keep an eye on this mailbox besides running mail via ssh. What should I install/enable to allow access to these system mailboxes via IMAP or POP3 with minimal fuss? Either protocol would be fine for what I'm doing, as I could then add it as an account in Outlook. A bit of searching led me to cyrus-imapd and dovecot, but it seems like they are meant for more serious mail hosting operations. Either they use their own mailbox system exclusively, or don't have a simple way of making the UNIX mailboxes available. If I'm wrong about that, then I'm fine with using either of them as long as I can get to the mailboxes of the existing accounts on the box.

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  • problem getting php_oci8 working on linux RHEL 5

    - by Jonathan
    Hi All, I'm installing oracle oci8 on a linux server here and I am having an issue where php_oci8.so does not seem to be able to find the libclntsh.so.11.1. I've got the instant client installed and it shows up fine in ldconfig -p , but when I do ldd on the php_oci8.so it shows up as not found. Does anyone have any ideas as for what I can check ?

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  • Redirect 301 fails with a path as destination

    - by Martijn Heemels
    I'm using a large number of Redirect 301's which are suddenly failing on a new webserver. We're in pre-production tests on the new webserver, prior to migrating the sites, but some sites are failing with 500 Internal Server Error. The content, both databases and files, are mirrored from the old to the new server, so we can test if all sites work properly. I traced this problem to mod_alias' Redirect statement, which is used from .htaccess to redirect visitors and search engines from old content to new pages. Apparently the Apache server requires the destination to be a full url, including protocol and hostname. Redirect 301 /directory/ /target/ # Not Valid Redirect 301 /main.html / # Not Valid Redirect 301 /directory/ http://www.example.com/target/ # Valid Redirect 301 /main.html http://www.example.com/ # Valid This contradicts the Apache documentation for Apache 2.2, which states: The new URL should be an absolute URL beginning with a scheme and hostname, but a URL-path beginning with a slash may also be used, in which case the scheme and hostname of the current server will be added. Of course I verified that we're using Apache 2.2 on both the old and the new server. The old server is a Gentoo box with Apache 2.2.11, while the new one is a RHEL 5 box with Apache 2.2.3. The workaround would be to change all paths to full URL's, or to convert the statements to mod_rewrite rules, but I'd prefer the documented behaviour. What are your experiences?

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  • RHEL raw device (over VMware RDM) performance issues

    - by jifa
    I'm running RHEL 5.3 over vSphere 4.0U1. I configured multiple LUNs on my NetApp (Fibre) storage, and added the RDM on two (Linux) VMs, using the Paravirtual SCSI adapter. One LUN is 100GB in size, successfully mapped to /dev/sdb on both VMs, 5 more are 500MB in size (mapped to /dev/sd{c-g}. I also created one partition per device. I have encountered two issues: First, writing directly to /dev/sdb1 gives me ~50MB/s, while any of the /dev/sd{c-g}1 gives me ~9MB/s. There is no difference in configuration of the LUNs apart from their size. I am wondering what causes this but this is not my main problem, as I would settle for 9 MB/s. I created raw devices using udev pretty straightforwardly: ACTION=="add", KERNEL=="sdb1", RUN+="/bin/raw /dev/raw/raw1 %N" per device Writing to any of the new raw devices dramatically slows down performance to just over 900KB/s. Can anyone point me in a helpful direction? Thanks in advance, -- jifa

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  • rhn_register through HTTP Proxy with Authentication

    - by kjloh
    Is there any limitation to the proxy authentication support of rhn_register? The proxy of the network I'm on sends the follow 407: HTTP/1.1 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) Via: 1.1 VANESSA Proxy-Authenticate: Negotiate Proxy-Authenticate: Kerberos Proxy-Authenticate: NTLM It seems that rhn_register is not able to any of the authentication schemes above. Any advise?

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  • MySQL Server Not Starting on Boot

    - by Brian
    I have installed MySQL on a RHEL 5 server and I'm wanting to set it up so that the server starts on boot. I've ran the "chkconfig --list mysqld" command and it's currently running on levels 3, 4 and 5. However, when I reboot the server, no mysqld process is started. I've also tried manually starting the server by executing "/usr/bin/mysqld_safe" and I get the following output: Starting mysqld daemon with databases from /var/lib/mysql STOPPING server from pid file /var/run/mysqld/mysqld.pid 100319 10:31:30 mysqld ended I looked in /var/log/mysqld.log and I found the following: 100319 10:29:01 mysqld started 100319 10:29:02 InnoDB: Started; log sequence number 0 29752204 100319 10:29:02 [ERROR] Can't start server : Bind on unix socket: Permission denied 100319 10:29:02 [ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ? 100319 10:29:02 [ERROR] Aborting

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  • rhel configure: limit root direct login to systems except through system consoles

    - by zhaojing
    I have to configure to limit root direct access except system consoles. That is, the ways of telnet, ftp, SSH are all prohibited. Root can only login through console. I understand that will require me to configure the file /etc/securetty. I have to comment all the tty, just keep "console" in /etc/securetty. But from google, I found many peoples said that configure /etc/securetty will not limit the way of SSH login. From my experiment, I found it is. (configure /etc/securetty won't limit SSH login). And I add one line in /etc/pam.d/system-auth: auth required pam_securetty It seems root SSH login can be prohibited. But I can't find the reason: What is the difference of configure pam_securetty and /etc/securetty? Can anyone help me with this? Only configure /etc/securetty could work? Or Have I to configure pam_securetty at the same time? Thanks a lot!

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  • Red Hat 5.4 slow processing

    - by yucefrizk
    I'm running Red Hat Linux 5.4 on HP DL580 server with 16 processors and 64 GB of RAM. I'm connecting to the server remotely through SSH. after entering the password, it takes time to return the command line, if I click ctrl+c during this time, I'll have the command line prompt but not the correct bash prompt (I have to run bash to pass to my correct prompt). I tried to install Apache on the server, ./configure took 4 hours to finish instead of 1 or two minutes, Oracle installation same behavior. Server Disks are mirrored using RAID controller. any idea what could be the reason of this slowness?

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  • How do I run strace or ltrace on Tomcat Catalina?

    - by flashnode
    Running ltrace isn't trivial. This RHEL 5.3 system has based on a Tomcat Catalina (servlet container) which uses text scripts to tie everything together. When I tried to find an executable here's the rabbit hole I went down: /etc/init.d/pki-ca9 calls dtomcat5-pki-ca9 ]# Path to the tomcat launch script (direct don't use wrapper) TOMCAT_SCRIPT=/usr/bin/dtomcat5-pki-ca9 /usr/bin/dtomcat5-pki-ca9 calls a watchdog program /usr/bin/nuxwdog -f $FNAME I replaced nuxwdog with a wrapper [root@qantas]# cat /usr/bin/nuxwdog #!/bin/bash ltrace -e open -o /tmp/ltrace.$(date +%s) /usr/bin/nuxwdog.bak $@ [root@qantas]# service pki-ca9 start Starting pki-ca9: [ OK ] [root@qantas]# cat /tmp/ltrace.1295036985 +++ exited (status 1) +++ This is ugly. How do I run strace or ltrace in tomcat?

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  • How to diagnose storage system scaling problems?

    - by Unknown
    We are currently testing the maximum sequential read throughput of a storage system (48 disks total behind two HP P2000 arrays) connected to HP DL580 G7 running RHEL 5 with 128 GB of memory. Initial testing has been mainly done by running DD-commands like this: dd if=/dev/mapper/mpath1 of=/dev/null bs=1M count=3000 In parallel for each disk. However, we have been unable to scale the results from one array (maximum throughput of 1.3 GB/s) to two (almost the same throughput). Each array is connected to a dedicated host bust adapter, so they should not be the bottleneck. The disks are currently in JBOD configuration, so each disk can be addressed directly. I have two questions: Is running multiple DD commands in parallel really a good way to test maximum read throughput? We have noticed very high SWAPIN-% numbers in iotop, which I find hard to explain because the target is /dev/null How shoud we proceed in trying to find the reason for the scaling problem? Do you thing the server itself is the bottleneck here, or could there be some linux parameters that we have overlooked?

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  • What's the appropriate way to upgrade Apache in RHEL?

    - by jldugger
    The version of Apache shipped in RHEL 5.4 is very old. A feature I need only shipped recently. It seems Apache upstream only ships tarballs, and omits binary packages. Obviously I could build from source, but what's the canonical way to upgrade a single package like this? Is it common procedure to drop a newer tarball in the existing SPEC, or does someone already do all this with an eye towards RHEL?

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  • Can't ssh from Ubuntu to RHEL or CentOS

    - by Alex N
    I am trying to setup publickey based authenitcation for 2 different boxes. One RHEL another on e is CentOS. I am having same issue with both where ssh fails and falls back to password based authentication. Error that seems to be causing this is quite obscure: debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_1000' not found Both boxes are completely unrelated. I have my public key in .ssh/authorized_keys file on both boxes, all permissions are checked and good(700 for .ssh and 600 for internals) I have bunch of other servers that are running on various flavors(Gentoo, Fedora, FreeBSD etc.) and publickey ssh works just fine, but CentOS and RHEL giving me this for some reason :( Anyone experienced this before? I am not even sure how to further analyze this issue :(

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  • why won't php 5.3.3 compile libphp5.so on redhat ent

    - by spatel
    I'm trying to upgrade to php 5.3.3 from php 5.2.13. However, the apache module, libphp5.so will not be compiled. Below is a output I got along with the configure options I used. The configure statement is a reduced version of what I normally use. ========== './configure' '--disable-debug' '--disable-rpath' '--with-apxs2=/usr/local/apache2/bin/apxs' ... ** ** ** Warning: inter-library dependencies are not known to be supported. ** ** ** All declared inter-library dependencies are being dropped. ** ** ** Warning: libtool could not satisfy all declared inter-library ** ** ** dependencies of module libphp5. Therefore, libtool will create ** ** ** a static module, that should work as long as the dlopening ** ** ** application is linked with the -dlopen flag. copying selected object files to avoid basename conflicts... Generating phar.php Generating phar.phar PEAR package PHP_Archive not installed: generated phar will require PHP's phar extension be enabled. clicommand.inc pharcommand.inc directorytreeiterator.inc directorygraphiterator.inc invertedregexiterator.inc phar.inc Build complete. Don't forget to run 'make test'. ============= php 5.2.13 recompiles just fine so something is up with 5.3.3. Any help would be greatly appreciated!!

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  • Monitor or log directory permission changes?

    - by Myles
    I'm having an issue with a cPanel shared server running CentOS 5 where a few directories under the public_html folder keep getting changed to 777 from 755. The customer says they are not changing it and i'm wondering if there is a way to monitor these specific directories to find out who/what is changing the permissions. I have looked into using auditctl and after testing it and changing the permissions myself I don't see anything in the logs so i'm not sure if i'm doing it right or if it's even possible. Does anybody have any suggestions or ideas on how I could figure out what is changing the permissions? Thanks!!

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  • ntpdate works, but ntpd can't synchronize

    - by dafydd
    This is in RHEL 5.5. First, ntpdate to the remote host works: $ ntpdate XXX.YYY.4.21 24 Oct 16:01:17 ntpdate[5276]: adjust time server XXX.YYY.4.21 offset 0.027291 sec Second, here are the server lines in my /etc/ntp.conf. All restrict lines have been commented out for troubleshooting. server 127.127.1.0 server XXX.YYY.4.21 I execute service ntpd start and check with ntpq: $ ntpq ntpq> peer remote refid st t when poll reach delay offset jitter ============================================================================== *LOCAL(0) .LOCL. 5 l 36 64 377 0.000 0.000 0.001 timeserver.doma .LOCL. 1 u 39 128 377 0.489 51.261 58.975 ntpq> opeer remote local st t when poll reach delay offset disp ============================================================================== *LOCAL(0) 127.0.0.1 5 l 40 64 377 0.000 0.000 0.001 timeserver.doma XXX.YYY.22.169 1 u 43 128 377 0.489 51.261 58.975 XXX.YYY.22.169 is the address of the host I'm working on. A reverse lookup on the IP address in my ntp.conf file validates that the ntpq output is correctly naming the remote server. However, as you can see, it appears to just roll over to my .LOCL. time server. Also, ntptrace just returns the local time server, and ntptrace XXX.YYY.4.21 times out. $ ntptrace localhost.localdomain: stratum 6, offset 0.000000, synch distance 0.948181 $ ntptrace XXX.YYY.4.21 XXX.YYY.4.21: timed out, nothing received ***Request timed out This looks like my ntp daemon is just querying itself. I am thinking about the possibility that the router-I-don't-control between my test network timeserver and the corporate network timeserver is blocking on source port. (I think ntpdate sends on port 123, which gets it around that filter and is why I can't use it while ntpd is running.) I have email in to the network folks to check that. Finally, telnet XXX.YYY.4.21 123 never times out or completes a connection. The questions: What am I missing, here? What else can I check to try to figure out where this connection is failing? Would strace ntptrace XXX.YYY.4.21 show me the source port ntptrace is sending from? I can deconstruct most strace calls, but I can't figure out the location of that datum. If I can't directly examine the gateway router between my test network and the timeserver, how might I build evidence that it's responsible for these disconnections? Alternately, how might I rule it out?

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