realVNC Could not init font path element /usr/X11R6/lib/X11/fonts/misc/, removing from list! 處理

 

參考：http://cha.homeip.net/blog/2005/08/137.html

vnc-4_1_3-x86_linux.tar.gz

 

安裝realvnc for linux 後發現啟動不了

查看~/.vnc/xxx.log發現

Couldn't open RGB_DB '/usr/X11R6/lib/X11/rgb'

Xvnc Free Edition 4.1.3 - built Oct 15 2008 12:55:42
Copyright (C) 2002-2008 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 40201000, The XFree86 Project, Inc

Wed May 12 22:18:05 2010
vncext:      VNC extension running!
vncext:      Listening for VNC connections on port 5901
vncext:      Listening for HTTP connections on port 5801
vncext:      created VNC server for screen 0
error opening security policy file /usr/X11R6/lib/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/misc/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/CID/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/75dpi/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/100dpi/, removing from list!

Fatal server error:
could not open default font 'fixed'
xsetroot:  unable to open display 'pennyho.test.com:1'
Warning: This program is an suid-root program or is being run by the root user.
The full text of the error or warning message cannot be safely formatted
in this environment. You may get a more descriptive message by running the
program as a non-root user or by removing the suid bit on the executable.
xterm Xt error: Can't open display: %s

(gnome-session:22056): Gtk-WARNING **: cannot open display:
vncconfig: unable to open display "pennyho.crp.com:1"

發現/usr/X11R6/lib/X11/ 沒有內容

google了一下發現http://www.linuxquestions.org/questions/linux-desktop-74/vnc-problems-could-not-open-default-font-fixed-481175/

 

cp –rf /usr/share/X11 /usr/X11R6/lib/X11

再次啟動，vncserver 查看一下端口

# netstat -untlp |grep Xvnc
tcp        0      0 0.0.0.0:5801                0.0.0.0:*                   LISTEN      3463/Xvnc
tcp        0      0 0.0.0.0:5901                0.0.0.0:*                   LISTEN      3463/Xvnc
tcp        0      0 0.0.0.0:6001                0.0.0.0:*                   LISTEN      3463/Xvnc

出來了

remote 瀏覽器訪問5801端口 ok！

記錄一下備忘

記錄一下我的過程：

tar xvfz vnc-4_1_3-x86_linux.tar.gz
cd vnc-4_1_3-x86_linux

  ./vncinstall /usr/local/bin

mkdir -p /usr/X11R6/lib/modules/extensions/

  cd vnc-4_1_3-x86_linux

cp vnc.so /usr/X11R6/lib/modules/extensions/
mkdir -p /usr/local/vnc/classes
  cp java/* /usr/local/vnc/classes
cp -rf /usr/share/X11 /usr/X11R6/lib/X11

# which vncserver
/usr/local/bin/vncserver

 

# netstat -tln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State
tcp        0      0 0.0.0.0:771                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:904                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:25300               0.0.0.0:*                   LISTEN
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN
tcp        0      0 :::22                       :::*                        LISTEN

]# vncserver

You will require a password to access your desktops.

Password:
Verify:

New 'CRRACTEST.localdomain:1 (root)' desktop is CRRACTEST.localdomain:1

Creating default startup script /root/.vnc/xstartup
Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/CRRACTEST.localdomain:1.log

# netstat -tln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State
tcp        0      0 0.0.0.0:771                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:904                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:5801                0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:5901                0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:6001                0.0.0.0:*                   LISTEN
tcp        0      0 0.0.0.0:25300               0.0.0.0:*                   LISTEN
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN
tcp        0      0 :::22                       :::*                        LISTEN

從remote IE or firefox :

:5801">http://vncserver<ip>:5801

就可以訪問到了

當然如果希望gnome or kde env,修改 ~/.vnc/xstartup文件

GNOME:

xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
gnome-session &

KDE:

xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
startkde &

補充完畢

vmware安裝在Centos5.3上的報錯vmware gcc: error trying to exec 'cc1': execvp: No such file or directory

 

運行

vmware-config.pl ,報錯

…

vmware gcc: error trying to exec 'cc1': execvp: No such file or directory

…

糾結了半天原來認為是kernel 的問題，後來發現

gcc-c++ 沒有安裝

yum install gcc-c++

再次運行 過去了

記錄一下備忘

keepalived failover實驗

實驗keepalived 對2個lvs server進行failover的切換

要求：

1.可以切換過去

2.發送mail

安裝keepalived-1.1.19.tar.gz 目前最新的

./configure

make

make install 三部曲

#cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/

#cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/

#mkdir /etc/keepalived

#cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/

#cp /usr/local/sbin/keepalived /usr/sbin/

然後便捷.conf文件

! Configuration File for keepalived
global_defs {
   notification_email {
                yourname@yourdomain //要收到mail的address
   }
   notification_email_from lvs-machine@lvsdomain  發送
   smtp_server 127.0.0.1 
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
# VIP1
vrrp_instance VI_1 {
    state MASTER            

    smtp_alert    #這個是關鍵，如果沒有這個不會發mail!
    interface eth0
    virtual_router_id 51
    priority 150        advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.16.1.240
    }
}

virtual_server 172.16.1.240 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 60
    protocol TCP

    real_server 172.16.1.233 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
     }
}
[root@lvserver keepalived]#

backup

! Configuration File for keepalived
global_defs {
   notification_email {
                yourname@yourdomain
   }
   notification_email_from  lvs-backup@lvs-domain
   smtp_server 127.0.0.1   #default 啟動sendmail 25端口
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

# VIP1
vrrp_instance VI_1 {
    state BACKUP             #.......MASTER..BACKUP
        smtp_alert
    interface eth0
    virtual_router_id 51
    priority 99    # ......100..99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.16.1.240
    }
}

virtual_server 172.16.1.240 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 60
    protocol TCP

    real_server 172.16.1.233 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
     }
}

在default情況下，master 掉了會切換到slave(backup) lvs server, 但是當master 回來的時候會取代slave,還是master.

這個要跟實際應用策略有關係。

要注意就是：

smtp_alert的設置，否則不會收到mail

測試發現他發出來的mail不是太明顯，沒有辦法編輯格式，後來想了一下，可以使用其他的手段做一個mail script.發送。

網上很多資料。不再列舉了

記錄一下，備忘！

 

參考：

http://www.linuxtone.org/thread-1077-1-1.html

sendmail “cannot open `/usr/share/sendmail-cf/m4/cf.m4': No such file or directory” 問題處理

在生成sendmail configure file的時候報錯了

m4 sendmail.mc >sendmail.cf

cannot open `/usr/share/sendmail-cf/m4/cf.m4': No such file or directory

網上查一下少

sendmail-cf

這個包

因為我這裡使用的是OEL 5.4 從iso上面找到

[root@lvserver Server]# rpm -Uvh sendmail-cf-8.13.8-2.el5.x86_64.rpm

warning: sendmail-cf-8.13.8-2.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159


Preparing...                ########################################### [100%]


   1:sendmail-cf            ########################################### [100%]


[root@lvserver Server]#

 

再次運行m4 sendmail.mc >sendmail.cf     ok

[root@lvserver ~]# netstat -tln

Active Internet connections (only servers)


Proto Recv-Q Send-Q Local Address               Foreign Address             State


tcp        0      0 127.0.0.1:199               0.0.0.0:*                   LISTEN


tcp        0      0 0.0.0.0:904                 0.0.0.0:*                   LISTEN


tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN


tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN


tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN   <-here


tcp        0      0 0.0.0.0:860                 0.0.0.0:*                   LISTEN


tcp        0      0 :::22                       :::*                        LISTEN

 

發一個mail測試一下：

[root@lvserver ~]# mail -s "lvs222 test"    youname@example.com.hk </dev/null


Null message body; hope that's ok


[root@lvserver ~]#

收到，測試成功記錄一下，

sendmail的配置文件的地址：

[root@lvserver mail]# pwd

/etc/mail

啟動關閉

[root@lvserver init.d]# pwd


/etc/init.d

[root@lvserver init.d]# ./sendmail

Usage: ./sendmail {start|stop|restart|condrestart|status}

記錄一下備忘！

apache 中如何添加mod_info.c這個文件

最近做實驗，發現在1.3.x , 2.2.x version中mod_status是defult安裝的，但是mod_info不是default安裝的。

如何安裝呢？

------------------apache 1.3.x----
[root@web232 standard]# /usr/local/apache/bin/apxs -cia mod_info.c
apxs:Error: Sorry, no DSO support for Apache available
apxs:Error: under your platform. Make sure the Apache
apxs:Error: module mod_so is compiled into your server
apxs:Error: binary `/usr/local/apache/bin/httpd'.

應該是沒有按照要求進行編譯

./configure --prefix=/usr/local/ --enable-module=so

如果這樣編譯就可以了

在2.2.x環境下
---apache2.2.x----
[root@web233 generators]# /usr/local/apache2/bin/apxs -cia mod_info.c
/usr/local/apache2/build/libtool --silent --mode=compile gcc -prefer-pic   -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -g -O2 -pthread -I/usr/local/apache2/include  -I/usr/local/apache2/include   -I/usr/local/apache2/include   -c -o mod_info.lo mod_info.c && touch mod_info.slo
/usr/local/apache2/build/libtool --silent --mode=link gcc -o mod_info.la  -rpath /usr/local/apache2/modules -module -avoid-version    mod_info.lo
/usr/local/apache2/build/instdso.sh SH_LIBTOOL='/usr/local/apache2/build/libtool' mod_info.la /usr/local/apache2/modules
/usr/local/apache2/build/libtool --mode=install cp mod_info.la /usr/local/apache2/modules/
cp .libs/mod_info.so /usr/local/apache2/modules/mod_info.so
cp .libs/mod_info.lai /usr/local/apache2/modules/mod_info.la
cp .libs/mod_info.a /usr/local/apache2/modules/mod_info.a
chmod 644 /usr/local/apache2/modules/mod_info.a
ranlib /usr/local/apache2/modules/mod_info.a
PATH="$PATH:/sbin" ldconfig -n /usr/local/apache2/modules
----------------------------------------------------------------------
Libraries have been installed in:
   /usr/local/apache2/modules
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
chmod 755 /usr/local/apache2/modules/mod_info.so
[activating module `info' in /usr/local/apache2/conf/httpd.conf]
[root@web233 modules]# pwd
/usr/local/apache2/modules
[root@web233 modules]# ls
httpd.exp  mod_info.so
已经增加了
# Example:
# LoadModule foo_module modules/mod_foo.so
LoadModule info_module        modules/mod_info.so  ＃這個是自動添加上的

添加如下內容：
<Location /server-info>
    SetHandler server-info
    Order deny,allow
    Allow from all    #我這裡是測試環境所以也就這樣設了 production 環境注意一下
</Location>
http://172.16.1.233/server-info

看到信息了

注意httpd.conf中間ExtendedStatus 在2.2.x版本是沒有的

ExtendedStatus On

加上restart apache

就可以看到信息了

臨時開發vsftpd

 

yum install vsftpd

cd /etc/vsftpd

[root@carbon vsftpd]# ls
ftpusers  user_list  vsftpd.conf  vsftpd.conf.bak  vsftpd_conf_migrate.sh
[root@carbon vsftpd]#

 

 

[root@carbon vsftpd]# cat vsftpd.conf
anonymous_enable=NO
local_enable=YES
write_enable=YES
listen=YES
listen_port=21
max_clients=100
max_per_ip=5
idle_session_timeout=600
data_connection_timeout=120
accept_timeout=60
connect_timeout=60
tcp_wrappers=YES
guest_enable=YES
#guest_username=vsftpd
guest_username=yourusername
virtual_use_local_privs=YES
#pam_service_name=ftp
chroot_local_user=YES
pasv_enable=YES
pasv_min_port=30998
pasv_max_port=30999
[root@carbon vsftpd]#

[root@carbon pam.d]# pwd
/etc/pam.d
[root@carbon pam.d]# cp vsftpd ftp  #否這server上的用戶登錄不上

[root@carbon pam.d]# vsftpd /etc/vsftpd/vsftpd.conf

[root@carbon pam.d]# netstat –tln

 

tcp        0      0 0.0.0.0:21                  0.0.0.0:*                   LISEN

 

本地ftp---ok

遠程ftp –ok

apache ab stress tool “apr_socket_recv: Connection reset by peer (104)” 的處理

使用apache 自帶的stresss tools ab, 如果併發設定的稍微大點就報錯了

類似：

[root@localhost bin]# ./ab -n 1000000 -c 2000 http://172.16.1.237/index.html

This is ApacheBench, Version 2.3 <$Revision: 655654 $>

Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 172.16.1.237 (be patient)

apr_socket_recv: Connection reset by peer (104)

Total of 80159 requests completed

開始懷疑是web server設置， os kernel parameter 設置的問題，後面發現不是， 而是ab 這個程序自身的問題，要打patch:

我用的是2.2.15 ，最新發佈的找到  srccode/support/ab.c

--修改代碼ab.c

   1367                 }

   1368                 return;

   1369             } else {

   1370                 //apr_err("apr_socket_recv", status); //原來的

   1371                 bad++;

   1372                 close_connection(c);

   1373                 return;

   1374             

   1375             }

   1376         }

   1377     }

make

使用這個新生成的ab做測試壓力可以達到20000

[root@localhost support]# ./ab -k -n 1000000 -c 20000 http://172.16.1.237/index.html

This is ApacheBench, Version 2.3 <$Revision: 655654 $>

Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 172.16.1.237 (be patient)

Completed 100000 requests

Completed 200000 requests

Completed 300000 requests

Completed 400000 requests

Completed 500000 requests

Completed 600000 requests

Completed 700000 requests

Completed 800000 requests

Completed 900000 requests

Completed 1000000 requests

Finished 1000000 requests

Server Software:        Apache/2.2.15

Server Hostname:        172.16.1.237

Server Port:            80

Document Path:          /index.html

Document Length:        62 bytes

Concurrency Level:      20000

Time taken for tests:   129.656 seconds

Complete requests:      1000000

Failed requests:        26877

   (Connect: 0, Receive: 8959, Length: 8959, Exceptions: 8959)

Write errors:           0

Keep-Alive requests:    982282

Total transferred:      344888716 bytes

HTML transferred:       61514602 bytes

Requests per second:    7712.75 [#/sec] (mean)

Time per request:       2593.110 [ms] (mean)

Time per request:       0.130 [ms] (mean, across all concurrent requests)

Transfer rate:          2597.69 [Kbytes/sec] received

Connection Times (ms)

              min  mean[+/-sd] median   max

Connect:        0  128 1551.6      0   93118

Processing:     1  583 3610.3    260  104485

Waiting:        0  284 639.7    252   54667

Total:          1  711 4610.9    260  128455

Percentage of the requests served within a certain time (ms)

  50%    260

  66%    349

  75%    397

  80%    424

  90%    476

  95%    504

  98%    664

  99%  12202

100%  128455 (longest request)

[root@localhost support]#

[root@localhost support]# ./ab -k -n 1000000 -c 30000 http://172.16.1.237/index.html

/root/httpd-2.2.15/support/.libs/lt-ab: Invalid Concurrency [Range 0..20000]

Usage: /root/httpd-2.2.15/support/.libs/lt-ab [options] [http://]hostname[:port]/path

 

再次修改src code, grep 一下20000，將這個參數加大

但是無論如何也上不了 30000，

[root@localhost support]# ./ab -k -n 1000000 -c 30000 http://172.16.1.237/index.html

This is ApacheBench, Version 2.3 <$Revision: 655654 $>

Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/

Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 172.16.1.237 (be patient)

Test aborted after 10 failures

apr_socket_connect(): Cannot assign requested address (99)

 

有時間再查，記錄一下