Friday, June 26th, 2009
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3:12 pm - dhcp
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Как искать левые DHCP сервера?
# tcpdump -i eth0 port 67 or port 68
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
^A2^A3^A414:30:31.803780 IP dilbert.equila.ru.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:1a:4d:4e:18:6d (oui Unknown), length 548
14:30:31.804601 IP 192.168.0.249.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 277
С другой консоли:
# /usr/lib64/nagios/plugins/check_dhcp
OK: Received 1 DHCPOFFER(s), max lease time = 3600 sec.
[root@dilbert ~]# nmap 192.168.0.249
Starting Nmap 4.53 ( http://insecure.org ) at 2009-06-26 14:30 MSD
All 1714 scanned ports on 192.168.0.249 are filtered
MAC Address: 00:0F:EA:54:EA:F6 (Giga-Byte Technology Co.)
- и вот он, голубчик.
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(comment on this)
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Monday, May 18th, 2009
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9:12 pm - about: SVN
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Svn revert procedure (just for memory):
1. check the revision number just before "moment X" – say 12345
2. svnadmin dump /path/to/current/repo –r1: 12345 > svn.dump
(for example, svnadmin dump /data/repos/somerepo –r1:3490 > somerepo.dmp)
3. svnadmin create /path/to/new/repo
(for example, svnadmin create /data/repos/somerepo2)
4. svnadmin load /path/to/new/repo < svn.dump
(for example, svnadmin load /data/repos/somerepo < somerepo.dmp)
5. rm –fr /data/repos/oldrepo
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(1 comment | comment on this)
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Tuesday, May 12th, 2009
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2:56 pm - firefox + VPN, just for memory
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Чтобы отрубить у сабжа попытки ломиться в VPN без спросу, нужно в about:config проставить network.autodial-helper.enabled в false.
Hmm-hmm... а ведь похоже что thunderbird страдает тем же синдромом :(
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(comment on this)
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Thursday, April 30th, 2009
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7:18 pm - wimax
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Wednesday, April 29th, 2009
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5:03 pm - fuck
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[root@localhost linux-2.6.27.7]# chroot /mnt/sda1
chroot: cannot run command `/bin/bash': Exec format error
[root@localhost linux-2.6.27.7]# ldd /mnt/sda1/bin/bash
not a dynamic executable
[root@localhost linux-2.6.27.7]# file /mnt/sda1/bin/bash
/mnt/sda1/bin/bash: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@localhost linux-2.6.27.7]#
ну, и как это называется? :(
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(comment on this)
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Monday, March 16th, 2009
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5:15 pm - ora tips
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Кто-то дропнул тэйблспейс руками, оракл не встает, что делать?
SQL> ALTER TABLESPACE PROD_TEST_IGOR OFFLINE;
ALTER TABLESPACE PROD_TEST_IGOR OFFLINE
*
ERROR at line 1:
ORA-01109: database not open
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file
ORA-01110: data file 6: '/opt/oracle/oradata/dilbert/prod_test_igor'
Ответ:
startup mount;
alter database datafile 6 offline drop;
alter database open;
P.S. а вообще бы руки поотрывать...
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(comment on this)
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Wednesday, February 18th, 2009
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7:17 pm - count oracle instances
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Памятка как посмотреть сколько оракловых инстансов запущено на данной машине:
ps aux|grep pmon
oracle 14087 0.0 0.1 1721268 18020 ? Ss Feb17 0:01 ora_pmon_QUEUEDB
oracle 18558 0.0 0.1 1721264 17876 ? Ss 02:04 0:00 ora_pmon_ETL
oracle 18958 0.0 0.1 1721268 17876 ? Ss 03:22 0:00 ora_pmon_ODS2
oracle 19324 0.0 0.1 1721268 17892 ? Ss 03:53 0:00 ora_pmon_ODS1
root 20088 0.0 0.0 5988 580 pts/3 S+ 04:07 0:00 grep pmon
сколько пмонов, столько и инстансов.
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(comment on this)
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7:07 pm - http metrics
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Wednesday, February 11th, 2009
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3:16 pm - аналог from_unixtime
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date -d@1234567890
Sat Feb 14 02:31:30 MSK 2009
занятно, не знал! ;)
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(comment on this)
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3:06 pm - anti-big-brother
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и потом:
- все, весь траффик нашего браузера идет через шифрованный канал, через наш доверенный сайт из destination ;)
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(1 comment | comment on this)
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Friday, February 6th, 2009
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2:29 pm
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[root@dilbert rc.d]# iptables -t nat -A PREROUTING -i eth0:1 -p tcp --dport 2222 -j DNAT --to-destination xx.xx.xx.xx:22
Warning: weird character in interface `eth0:1' (No aliases, :, ! or *).
[root@dilbert rc.d]# iptables -L -t nat
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DNAT tcp -- anywhere anywhere tcp dpt:EtherNet/IP-1 to:xx.xx.xx.xx:22
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
[root@dilbert rc.d]# iptables --version
iptables v1.4.0
No aliases, но про этом правило вставляется! ;)
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(comment on this)
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Wednesday, February 4th, 2009
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8:02 pm - памятка по expect
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[root@unicorn ~]# ./Proxy-log-pkt-total.exp | grep Proxy-log-pkt-total
Proxy-log-pkt-total 17590
[root@unicorn ~]# cat /root/Proxy-log-pkt-total.exp
#!/usr/bin/expect -f
set timeout 60
spawn nebu-pci-com
expect "Please enter the message:"
send "proxy.stats\r"
expect "Proxy Statistics:"
send "\03"
expect eof
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(comment on this)
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Thursday, January 22nd, 2009
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5:33 pm - hyperic+jmx
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[hyperic@dogbert ~]$ ~/agent-3.2.2/jre/bin/java -jar ~/agent-3.2.2/pdk/lib/hq-product.jar -Dplugins.include=csc-metrics -m metric
Sun JVM 1.5 CSC metrics Availability:
Sun JVM 1.5 CSC metrics:NebuAd.usermodeler:name=Metrics:Availability:jmx.url=service%3Ajmx%3Armi%3A///jndi/rmi%3A//192.168.0.108%3A9998/jmxrmi,jmx.username=%jmx.username%,jmx.password=%jmx.password%
=>100.0%<=
Sun JVM 1.5 CSC metrics RequestHandlingTime.avg.hr:
Sun JVM 1.5 CSC metrics:NebuAd.usermodeler:name=Metrics:RequestHandlingTime.avg.hr:jmx.url=service%3Ajmx%3Armi%3A///jndi/rmi%3A//192.168.0.108%3A9998/jmxrmi,jmx.username=%jmx.username%,jmx.password=%jmx.password%
=>382.0<=
Sun JVM 1.5 CSC metrics RequestHandlingTime.avg.hr per Minute:
Sun JVM 1.5 CSC metrics:NebuAd.usermodeler:name=Metrics:RequestHandlingTime.avg.hr__RATE__=1m:jmx.url=service%3Ajmx%3Armi%3A///jndi/rmi%3A//192.168.0.108%3A9998/jmxrmi,jmx.username=%jmx.username%,jmx.password=%jmx.password%
[hyperic@dogbert ~]$
Осталось понять, как встроить этот плагин в GUI...
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(1 comment | comment on this)
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Wednesday, January 21st, 2009
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10:28 pm - about: touch + nonrecursive find
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The following command sets the modification and access times of the
file named "bastille" to midnight, July 14, 1989, creating the file if
it does not already exist.
touch -t 8907140000 name_file
++ bash-3.2$ /usr/bin/find /nfs-vol0/metadata_snapshots/ -prune ! -type d -mtime +30 -exec rm -f {} \;
проверить, что в SunOS это будет удалять из данного каталога нерекурсивно (!)
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(comment on this)
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Tuesday, December 30th, 2008
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9:07 pm - тень Будды
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Wednesday, December 10th, 2008
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3:13 pm - mobile web server
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nmap -O 192.168.0.130
Starting Nmap 4.53 ( http://insecure.org ) at 2008-12-10 15:08 MSK
Interesting ports on 192.168.0.130:
Not shown: 1713 closed ports
PORT STATE SERVICE
80/tcp open http
MAC Address: 00:21:FE:5C:2C:6F (Unknown)
Device type: phone
Running: Nokia Symbian OS 9.X|10.X
OS details: Nokia E90 Communicator or N95 mobile phone (Symbian OS 9.2 - 10.0)
Uptime: 0.011 days (since Wed Dec 10 14:53:30 2008)
Network Distance: 1 hop
OS detection performed. Please report any incorrect results at http://insecure.org/nmap/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 15.056 seconds
Работает на этом ;)
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(comment on this)
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Wednesday, November 12th, 2008
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2:29 pm - памятка про то, как писать DVD
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[root@dilbert for_certer]# dvdrecord -dao speed=2 dev=/dev/scd0 FC-6-x86_64-DVD.iso
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'PIONEER '
Identification : 'DVD-RW DVR-112D'
Revision : '1.21'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
Driver flags : SWABAUDIO BURNFREE
Supported modes: PACKET SAO
HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction.
Speed set to 5540 KB/s
Starting to write CD/DVD at speed 4.0 in real SAO mode for single session.
Last chance to quit, starting real write in 0 seconds. Operation starts.
Track 01: Total bytes read/written: 4088006656/4088006656 (1996097 sectors).
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(comment on this)
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Friday, November 7th, 2008
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8:38 pm - ректальный VNC
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root@pitsu:/etc# /usr/sbin/iptables -t nat -I PREROUTING -p tcp -s 89.223.63.70 --dport 22 -j DNAT --to-destination 192.168.1.103:5901
;)
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(comment on this)
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Saturday, October 18th, 2008
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5:00 pm - fork
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Ну, вот и все... мальчик, 3.452 кг, 18-го в 17:00 - главное через год не забыть дату рождения, а то жена точно прибьет! :)))
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(2 comments | comment on this)
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Thursday, October 2nd, 2008
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5:33 pm - как посмотреть статус индекса
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select status
from user_indexes
where index_name = 'PK_ADJ_IMPRESSION'
- должно быть "VALID"
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(comment on this)
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