RE: [CentOS] NTP server
On Fri, 2008-02-01 at 11:43 -0800, James D. Parra wrote: > -Original Message- > From: Scott Ehrlich [mailto:[EMAIL PROTECTED] > Sent: Friday, February 01, 2008 11:37 AM > To: centos@centos.org > Subject: [CentOS] NTP server > > > I have a Centos 5 64-bit server that has ntp service enabled. Windows XP > with SP2 cannot properly sync to it for time, but can communicate with it > via samba, ssh, and anything else.I also disabled the Windows > Firewall. The C5 system does not have any firewall enabled. > > Other C5 workstations can successfully sync to it via ntpdate. > > What else could cause the XP machine to not be able to time sync with the > C5 server? > ~~ > > Try this; create a DNS entry called ntp.yourinternaldomain.com, then plug > that name into XP's internet time. I had a similar problem and changing the > IP address to FQDN fixed it. > > Perhaps it will work for you. > > Good luck, > > ~James Try running these from the command line net time /setsntp:10.0.0.87
Re: [CentOS] Re: NTP server
On Fri, 2008-02-01 at 13:29 -0800, John R Pierce wrote: > Scott Silva wrote: > > on 2/1/2008 12:03 PM Dennis McLeod spake the following: > >> XP command line: > >> > >> net time \\servername returns what? > >> > >> Perhaps the response will give a clue. > >> > >> > >> To set it: > >> > >> net time \\servername /set /yes > > Net time is only used to set time from a domain controller, not an ntp > > server. > > They use two completely different protocols. > > > however, > > NET TIME /SETSNTP:ip-of-ntp-server > > WILL set the windows 'internet time' server IP. > > NET TIME /QUERYSNTP > > will show the current 'internet time' server(s). > > note that the default Windows NTP client is really braindead, it just > 'sets' the system clock once a day, its not a proper NTP > implementation. for most users, this is fine, but realize oddities can > happen like the clock being set back a few seconds such that a given > time happens twice. Very true. You can modify the time interval by editing your registry. [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time \TimeProviders\NtpClient] "SpecialPollInterval"=dword:1c20 This will set it to update every two hours. The dword can be modified to set it for 1 hour to whatever. -jason ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Postfix smtp freezing
Hey all, For the last 8 months I have been running a postfix / mail scanner setup based on Johnny Hughes' excellent tutorial. For the firs 7 months I have had no issues. This past month I have been having instances where the user gets an smtp error while trying to send email. Restarting the postfix service is all it takes to resolve this issue. The problem is that it has begun to occur more and more often. It is now up to once every day. I have found nothing unusual in the mail or messages logs. As I am an ultra newbie I am unsure of the next step to take to resolve this. I have search through the past messages on this list and can find nothing. Anyone have any ideas? Thanks, Jason Ross ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
No I have not. We are a small company and the owner freaks out when it comes to any down time of email so I have just maintained the original install. No updates. Scott Silva wrote: Jason Ross spake the following on 8/9/2007 1:39 PM: Hey all, For the last 8 months I have been running a postfix / mail scanner setup based on Johnny Hughes' excellent tutorial. For the firs 7 months I have had no issues. This past month I have been having instances where the user gets an smtp error while trying to send email. Restarting the postfix service is all it takes to resolve this issue. The problem is that it has begun to occur more and more often. It is now up to once every day. I have found nothing unusual in the mail or messages logs. As I am an ultra newbie I am unsure of the next step to take to resolve this. I have search through the past messages on this list and can find nothing. Anyone have any ideas? Thanks, Jason Ross Have you done any normal maintenance such as OS upgrades? Software fixes? Did you do one about a month ago? -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
I am currently running Centos 4.3 postfix-2.2.10-1.RHEL4.2 mailscanner-4.57.6-1 The problem is I'm not yet smart enough to patch it quickly. But would patching it fix the issue or create more??? If so how would I roll back quickly? Scott Silva wrote: Jason Ross spake the following on 8/9/2007 3:36 PM: No I have not. We are a small company and the owner freaks out when it comes to any down time of email so I have just maintained the original install. No updates. Can you give some more details, like OS type/version, postfix version, MailScanner version, ETC. Probably many security holes if it has been sitting un-patched for 8 months. I think the owner would freak out more if his server gets rootkitted because of some unpatched security hole, don't you think? I patch running mail servers all the time, the downtime is usually only minutes, and if it is that busy, a remote ssh session will let you do it later in the evening. -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
Scott, Sorry 'bout that I thought I was missing something. spamassassin-3.0.6-1.el4 Just have 3 more questions. Should I use the graphical update or just yum update? Also are there any updates I should be concerned about? Should I update now, or after I resolve the smtp issue? Thank you for your time. Jason Ross Scott Silva wrote: Jason Ross spake the following on 8/9/2007 4:18 PM: I am currently running Centos 4.3 postfix-2.2.10-1.RHEL4.2 mailscanner-4.57.6-1 The problem is I'm not yet smart enough to patch it quickly. But would patching it fix the issue or create more??? If so how would I roll back quickly? First thing I would do is run yum update to bring the system patches up to speed. You will have a kernel update if you haven't updated for 8 months, so you will need a reboot. Then you can use the following script to backup your mailscanner installation. It is set up to run as root, and keep its stuff there. #!/bin/bash cp -a /etc/MailScanner /etc/MailScanner.$(date +%Y%m%d) cp -a /usr/lib/MailScanner /usr/lib/MailScanner.$(date +%Y%m%d) cp -a /usr/sbin/MailScanner /usr/sbin/MailScanner.$(date +%Y%m%d) echo cp -a --remove-destination /etc/MailScanner.$(date +%Y%m%d) /etc/MailScanner > /root/restorems-$(date +%Y%m%d).sh echo cp -a --remove-destination /usr/lib/MailScanner.$(date +%Y%m%d) /usr/lib/MailScanner >> /root/restorems-$(date +%Y%m%d).sh echo cp -a --remove-destination /usr/sbin/MailScanner.$(date +%Y%m%d) /usr/sbin/MailScanner>> /root/restorems-$(date +%Y%m%d).sh chmod +x /root/restorems-$(date +%Y%m%d).sh echo rm -fr /etc/MailScanner.$(date +%Y%m%d) > /root/delmsback-$(date +%Y%m%d).sh echo rm -fr /usr/lib/MailScanner.$(date +%Y%m%d) >> /root/delmsback-$(date +%Y%m%d).sh echo rm -fr /usr/sbin/MailScanner.$(date +%Y%m%d) >> /root/delmsback-$(date +%Y%m%d).sh echo rm -fr /root/restorems-$(date +%Y%m%d).sh >> /root/delmsback-$(date +%Y%m%d).sh echo rm -fr /root/delmsback-$(date +%Y%m%d).sh >> /root/delmsback-$(date +%Y%m%d).sh chmod +x /root/delmsback-$(date +%Y%m%d).sh This will back up your mailscanner setup with the current date. You can then install the latest from Julian's install tarball and be sure you run the update_mailscanner_conf and update_languages_conf scripts. Then you can restart MailScanner. If you need to restore a backup just run the restorems script with the date of your backup. I would also recommend updating spamassassin, but to get detailed help, we need to know if you are running the spamassassin that came with CentOS, or if you installed from Julian's clamav-spamassassin tarball. -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
Ken, I dont know that there is a specific error, it acts the same as if you put in a bad password. Once I restart postfix, it goes right through. jason Ken Price wrote: I am currently running Centos 4.3 postfix-2.2.10-1.RHEL4.2 mailscanner-4.57.6-1 Your OS is out of date, but not terribly in the grand scheme of things. This list probably remembers running CentOS 4.3 for quite a bit and it was rock solid. I'd start with the SMTP error message. Try to be as specific as possible when posting to lists. If the SMTP error is your symptom, give us the EXACT smtp error. This may simply be a problem where your system hit a "default install" performance ceiling and/or ran out of resources. Errors of this nature usually just require tweaking the config. Regards, Ken ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
Mail .medvoice.com actually resolves to the mail server inside through port forwarding. It's not really named that just everything going to the mail ports ends up there. Would DNS still be an issue for sending internal mail. I ran top during one of these unresponsive email spats and noticed that there are no smtp processes listed. If I wait long enough or if i restart posfix they come back. Is there some where I can look to determine if they a timing out and having issues restarting? -jason Lanny Marcus wrote: On 09 August 2007, Ken Price <[EMAIL PROTECTED]> wrote: I'll give my two cents and retire for the evening. I've tried multiple times from 3 different locations (Atlanta & Seattle) to connect to MAIL.MEDVOICE.COM on port 25 ... which I'm assuming is your problem server. I get inconsistent results. Half the time I get a near immediate (<2 seconds) 220 prompt. The rest of the time I get > 10 seconds or timeouts. I tried his SMTP this morning and it was either OK or timeout. 3) Who does your DNS? Looks like Qwest is authoritative for your domain, do you use their recursive DNS servers too? If yes, this could be a problem. If you don't already, RUN YOUR OWN RECURSIVE DNS for your server!! Bandwidth and DNS are the likely culprits. Possibly someone who knows a *lot* more about DNS management than I do can look at his DNS management? I have the ttl (IN) for "A" and "PTR" at 3600s for my web site. Faster, if one changes IP address. He has those ttl at 10s. Possibly he could use the IP address more, in DNS management? I've had the SMTP service die, over the past 68 months, approximately 10-15 times, on a RH server (shared hosting). Never daily. Services and processes sometimes die mysteriously, but probably not on a daily basis. In the WHOIS record: Name Server: AUTHNS3.STTL.QWEST.NET Name Server: AUTHNS1.MPLS.QWEST.NET Name Server: AUTHNS2.DNVR.QWEST.NET Possibly those should be in different order? (I have mine, NS1, NS2, NS3, NS4 from top to bottom) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
ps: I forgot to mention, the number of users does not seem to have an impact on this. I was here over the weekend when there is no one but me here and still saw the issue. -jr Lanny Marcus wrote: On 09 August 2007, Ken Price <[EMAIL PROTECTED]> wrote: I'll give my two cents and retire for the evening. I've tried multiple times from 3 different locations (Atlanta & Seattle) to connect to MAIL.MEDVOICE.COM on port 25 ... which I'm assuming is your problem server. I get inconsistent results. Half the time I get a near immediate (<2 seconds) 220 prompt. The rest of the time I get > 10 seconds or timeouts. I tried his SMTP this morning and it was either OK or timeout. 3) Who does your DNS? Looks like Qwest is authoritative for your domain, do you use their recursive DNS servers too? If yes, this could be a problem. If you don't already, RUN YOUR OWN RECURSIVE DNS for your server!! Bandwidth and DNS are the likely culprits. Possibly someone who knows a *lot* more about DNS management than I do can look at his DNS management? I have the ttl (IN) for "A" and "PTR" at 3600s for my web site. Faster, if one changes IP address. He has those ttl at 10s. Possibly he could use the IP address more, in DNS management? I've had the SMTP service die, over the past 68 months, approximately 10-15 times, on a RH server (shared hosting). Never daily. Services and processes sometimes die mysteriously, but probably not on a daily basis. In the WHOIS record: Name Server: AUTHNS3.STTL.QWEST.NET Name Server: AUTHNS1.MPLS.QWEST.NET Name Server: AUTHNS2.DNVR.QWEST.NET Possibly those should be in different order? (I have mine, NS1, NS2, NS3, NS4 from top to bottom) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Jason Ross Technical Operations Analyst MedVoice International, LLC Tel: 480-481-9292 Toll Free: 800-720-1151 Fax: 480-481-9712 Confidentiality Notice: This communication, along with any attachments, may be covered by federal and state law governing electronic communications and may contain confidential and privileged information. If the reader of this message is not the intended recipient, or a duly designated employee or agent of such recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
Rick, The reason i used top was because I noticed that mailscanner and smtpd were always on the list UNLESS the issue was occurring. I will try ps + grep next time as well. As for the ips they resolve quickly however they are all listed in /etc/hosts as we do not have an internal DNS. -jr [EMAIL PROTECTED] wrote: using "top" to look for processes probably isn't the best approach as (by default) you'll only see the more resource intensive applications. you'll probably get a better picture of things related to a specific application using "ps" (and grep). when you connect to an MTA (e.g., postfix/sendmail) it will try to do an reverse map lookup on the ipnumber of the inbound connection. if you don't have in-addr.apra entries for your ipnumbers, or if the machine running your MTA is having trouble getting to the dns server for the ipnumber range, then you'll get the type of delays you seem to be seeing. ultimately the dns will time out (the number of dns servers you have listed in your mail server's /etc/resolv.conf will effect this - more is not better). you can get a sense of whether this is the issue by doing lookups (on the mail server) of the ipnumber(s) for connecting machines that are encountering the delay. depending on your configuration, your server may cache a result, so the first may be slow with subsequent ones being fast (until you hit the TTL on the record). [by the way, when sending to a mailing list please try to suppress your confidentiality notice as it's meaningless in this context, and takes up a lot of lines.] - Rick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Postfix smtp freezing
Ken, You are correct, resolve.conf does list my isp's dns 250.171.3.65 which is qwest. The internal windows workstations also point o the isp's dns server. Can I setup a cashing dns server on the mail server itself?? PS: I just wanted to say thanks to everyone who has helped me so far. -jr Ken Price wrote: Jason, This has nothing to do with AUTHORITATIVE dns. I'm speculating this is a problem with your choice of RECURSIVE (caching) name servers. Realize, however, that without being on the box and looking at your configuration, all I can do is speculate. Mail .medvoice.com actually resolves to the mail server inside through port forwarding. Very typical. It's not really named that just everything going to the mail ports ends up there. Understood. Again, very typical. Would DNS still be an issue for sending internal mail. Maybe, maybe not. It depends on your internal network setup and where your server and workstations sit respective to each other. What's in your server's /etc/resolv.conf file? On your windows workstation, from the command prompt: ipconfig /all ... what "DNS Servers" are listed here? I ran top during one of these unresponsive email spats and noticed that there are no smtp processes listed. That just means there's no Postfix process in the busiest 20 or so processes. Use the command "ps -aux" for a more complete process view. That also means it's very unlikely your server is overloaded or reaching process limits. When someone initially connects to your mail server, typically the first thing your mail server does is a reverse IP lookup on the person connecting. Then, depending on your setup, it could also query a number of RBL sources (Real Time Black Hole Lists) to see if the sender is a known spammer. The more stuff that is done on that initial connection, the more DNS lookups your server has to make and the longer it takes to return the "OK" 220 prompt. That's why I'm speculating this is a DNS issue. If my hunch is correct, your /etc/resolv.conf will point to your ISP's recursive (caching) name servers. Rarely do they perform well since they're shared amongst hundreds/thousands/millions of users. For performance reasons, you're better off running at least one caching name server of your own inside your network - even on the server in question. While this is only speculation on your problem, these methods also lean towards "Best Practices" and are simple to implement. -Ken ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Re: Postfix smtp freezing - possible dns issues
Ken, Thanks. I followed you instrustions and it installed fine. I started up bind and can now dig @127.0.0.1 whatever.com and get a response. The only problem is when I use netstat -l | grep -e "domain" -e "54" i get "warning, got duplicate tcp line. a netstat -l gets me the folowing. [EMAIL PROTECTED] ~]# netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign AddressState tcp0 0 *:2 *:* LISTEN tcp0 0 *:768 *:* LISTEN tcp0 0 *:nfs *:* LISTEN tcp0 0 *:32769 *:* LISTEN tcp0 0 *:32770 *:* LISTEN tcp0 0 *:5801 *:* LISTEN tcp0 0 *:747 *:* LISTEN tcp0 0 *:pop3 *:* LISTEN tcp0 0 *:imap *:* LISTEN tcp0 0 *:sunrpc *:* LISTEN tcp0 0 *:1 *:* LISTEN tcp0 0 *:http *:* LISTEN tcp0 0 *:6001 *:* LISTEN tcp0 0 tms1.teltrax.com:domain *:*LISTEN tcp0 0 localhost.localdomai:domain *:* LISTEN tcp0 0 *:ssh *:* LISTEN tcp0 0 localhost.localdomain:smtp *:* LISTEN tcp0 0 tms1.teltrax.com:smtp *:* LISTEN Is this ok? -jason ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Nagios on CentOS 4.5
First off I am a linux / CentOS newbies so go easy on me. Just curious if anyone out there is running Nagios on CentOS 4.5. I have now installed it on a second server due to issue but the issues have come back to haunt me. The OS is running on an IBM NetVista. Every thing in both installs is identical as are the problems. Once I have Nagios up and monitoring every thing hangs. Even a terminal will hang before it finally just locks up. The only thing that brings it back is a reboot. Even stopping the services doesn't work. Disk space seems fine and even during the hangs there doesn't seems to be anything taking up a tremendous amount of resources. After a reboot every thing works fine for several hours. Any guesses or suggestions? Jason Ross smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Nagios on CentOS 4.5
I built it myself from the docs. I tried 2.10 but switched to 3.0 so that i could follow the documentation. Rick Barnes wrote: Jason Ross wrote: First off I am a linux / CentOS newbies so go easy on me. Just curious if anyone out there is running Nagios on CentOS 4.5. I have now installed it on a second server due to issue but the issues have come back to haunt me. The OS is running on an IBM NetVista. Every thing in both installs is identical as are the problems. Once I have Nagios up and monitoring every thing hangs. Even a terminal will hang before it finally just locks up. The only thing that brings it back is a reboot. Even stopping the services doesn't work. Disk space seems fine and even during the hangs there doesn't seems to be anything taking up a tremendous amount of resources. After a reboot every thing works fine for several hours. Any guesses or suggestions? I am running on a C4 server here and haven;t experienced any issues with it. What version do you have installed and did you built it yourself or use a repo? I used rpmforge for the deps but built nagios by hand using the docs on their site. Rick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Nagios on CentOS 4.5
Hmm, could i remove then reinstall perl or did you have to rebuild the server? -jason Tom Brown wrote: First off I am a linux / CentOS newbies so go easy on me. Just curious if anyone out there is running Nagios on CentOS 4.5. I have now installed it on a second server due to issue but the issues have come back to haunt me. The OS is running on an IBM NetVista. Every thing in both installs is identical as are the problems. Once I have Nagios up and monitoring every thing hangs. Even a terminal will hang before it finally just locks up. The only thing that brings it back is a reboot. Even stopping the services doesn't work. Disk space seems fine and even during the hangs there doesn't seems to be anything taking up a tremendous amount of resources. After a reboot every thing works fine for several hours. Any guesses or suggestions? i have had load issues on nagios boxes that were built with embedded perl i think, it was quite a long time ago and that bug may have been fixed. That made the load on a box continue to rise until nagios was restarted. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Nagios on CentOS 4.5
I couldn't find any for 3.0 -jason Tom Brown wrote: Hmm, could i remove then reinstall perl or did you have to rebuild the server? no its a nagios thing not a perl problem - so i just recompiled my nagios, although this was when rpm's were not available so i rolled my own. Why not try using some of the pre rolled rpm's ?? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Nagios on CentOS 4.5
No dice. The entire /var dir is less than 120 megs, and there are no large logs. -jason Alain Spineux wrote: On Nov 14, 2007 5:09 PM, Jason Ross <[EMAIL PROTECTED]> wrote: First off I am a linux / CentOS newbies so go easy on me. Just curious if anyone out there is running Nagios on CentOS 4.5. I have now installed it on a second server due to issue but the issues have come back to haunt me. The OS is running on an IBM NetVista. Every thing in both installs is identical as are the problems. Once I have Nagios up and monitoring every thing hangs. Even a terminal will hang before it finally just locks up. The only thing that brings it back is a reboot. Even stopping the services doesn't work. Disk space seems fine and even during the hangs there doesn't seems to be anything taking up a tremendous amount of resources. After a reboot every thing works fine for several hours. Any guesses or suggestions? Jason Ross Does it had unusual hard disk activities when you rebooted it ? Can you check if you don't have very very big log files somewhere ? More than 1Go or 100Mo for a compressed one ? To find them use # find /var -size +100M ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Nagios on CentOS 4.5
I tried the rpms but I had already used 3.0 and so it was pretty confusing. I followed the quickstart guide for fedora on the nagios site with only minor changes. Nagios is up and running, i have it checking linux servers, windows servers, firewalls and a web sensor. I even have it emailing me through my postfix box. I just have issues with lockups, in truth it could be some thing other than Nagios however, all my other servers run CentOS 4.5 and this one is the only one with the issue, and i have tried it on 2 separate servers, so i assume it is nagios. Is there a methodology for properly diagnosing issue with nagios and thus eliminating it as the cause?? Jim Perrin wrote: On Nov 14, 2007 5:09 PM, Jason Ross <[EMAIL PROTECTED]> wrote: No dice. The entire /var dir is less than 120 megs, and there are no large logs. Okay, lets back up a bit here, because nagios is definitely not the easiest of applications. Dag/RPMForge maintain rpm packages for nagios, which eliminate 99% of the setup headache. Those packages handle permissions, user creation, etc. Mostly all you have to do is configure the monitoring portion of it, and edit /etc/httpd/conf.d/nagios.conf to allow access as you see fit. There's a wiki how-to on wiki.centos.org at http://wiki.centos.org/HowTos/Nagios and while it references older versions of nagios, the instructions still hold true for the 2.x tree. Note that the 3.x tree is still in beta, and has several issues which may keep new users from getting it working properly. smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-DS
Hey all, I am looking at deploying a directory server in a small network. Currently looking at Fedora-ds and I noticed that CentOS is currently working on one. Does anyone know if the CentOS-DS is working well at this point? I noticed a how to is up on the wiki and was wondering if maybe it was preferable to Fedora-ds at this point. Thanks, Jason Ross smime.p7s Description: S/MIME cryptographic signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
