陳媽張燕燕美女生日快樂呀 ^^

對我而言相當有意義的一個數字
1760370

今天和三姑姑去Tiffany買了婚戒~~
難得看到三姑姑這麼喜歡~~, 牙一咬，眼一閉就刷了
不過好像應該是我拿著這個戒指和他求婚才對~~怎麼買婚戒的感覺和買衣服一樣…相當的平凡

若是在dspam 的 web ui retrain 無效的話
記得檢查 /usr/local/bin/dspam 的權限是不是 4555

一樣還是在這邊祝妳生日快樂
今年因為機器斷電的問題
所以拖到快過12點才說
別介意囉 ^^
生日快樂啦

Common Address Redundancy Protocol ( CARP )

1. 角色說明
   主要會有兩種角色, 一種是Host(  Primary ), 一種是Provider ( Secondary )
   Host 主要就是我們提供服務的機器
   Provider 就是當Host 掛掉後, 接手服務的機器
2. 參數說明 ( 這部份看原文吧, 這是我看OpenBSD上找來的, FreeBSD上敘述的比較少, 請大家搭配著一起服用 )

   vhid

   The Virtual Host ID. This is a unique number that is used to identify the redundancy group to other nodes on the network. Acceptable values are from 1 to 255.

   password

   The authentication password to use when talking to other CARP-enabled hosts in this redundancy group. This must be the same on all members of the group.

   carpdev

   This optional parameter specifies the physical network interface that belongs to this redundancy group. By default, CARP will try to determine which interface to use by looking for a physical interface that is in the same subnet as the ipaddress and mask combination given to the carp(4) interface.

   advbase

   This optional parameter specifies how often, in seconds, to advertise that we’re a member of the redundancy group. The default is 1 second. Acceptable values are from 1 to 255.

   advskew

   This optional parameter specifies how much to skew the advbase when sending CARP advertisements. By manipulating advskew, the master CARP host can be chosen. The higher the number, the less preferred the host will be when choosing a master. The default is 0. Acceptable values are from 0 to 254.

   state

   Force a carp(4) interface into a certain state. Valid states are init, backup, and master.

   group, -group

   Add or remove a carp(4) interface to a certain interface group. By default all carp(4) interfaces are added to the carp group. Each group has a carpdemote counter affecting all carp(4) interfaces belonging to that group. As described below, it can be useful to group certain interfaces together for failover purposes.

   ipaddress

   This is the shared IP address assigned to the redundancy group. This address does not have to be in the same subnet as the IP address on the physical interface (if present). This address needs to be the same on all hosts in the group, however.

   mask

   The subnet mask of the shared IP.

3. 實作
   要用CARP的功能有兩個方法
   一個是 rebuild kernel

   device carp

   另一個是load Kernel Module, 在/boot/loader.conf加入下面這行

   if_carp_load="YES"

   我個人是傾向用Kernel Module, 這以用freebsd-update 昇級時比較方便.

   接下來先在hasta ( Host ) 這台機器中, 編輯/etc/rc.conf 加入下面的設定

   hostname="hasta.example.org"
   ifconfig_fxp0="inet 192.168.1.51 netmask 255.255.255.0"
   cloned_interfaces="carp0"
   ifconfig_carp0="vhid 1 pass testpass 192.168.1.50/24"

   再編輯 hastb ( Provider ) 的 /etc/rc.conf

   hostname="hastb.example.org"
   ifconfig_fxp0="inet 192.168.1.52 netmask 255.255.255.0"
   cloned_interfaces="carp0"
   ifconfig_carp0="vhid 1 advskew 100 pass testpass 192.168.1.50/24"

   然後Host重開機, 等個幾秒再重開 Provider, 不重開機的話, 也可以試試

   # kldload if_carp.ko
   # ifconfig carp0 create
   # ifconfig carp0 down && ifcofig carp0 up ( 兩台都要, 先Host, 再Provider )

   這樣Host 應該就會拿到192.168.1.50的IP了, 從同網段的機器ping 一下, 看是不是有成功

4. failback
   在 Host 那台執行

   # sysctl net.inet.carp.preempt=1

   就可以了, 若搭配了HAST, 會滿不建議這樣處理的, 最好還是人工去看狀況怎麼樣, 再做調整及切換

Highly Available Storage  ( HAST )

1. 角色說明
   primary ( carp 中的 Host ) => 會把資料傳給slave 叫他乖乖的寫進去
   secondary ( carp 中的 provider ) => 乖乖的收 master 的資料來同步
2. 實作
   編輯兩台機器上的/etc/hast.conf, 加入以下資料

   resource test {
       on hasta {
           local /dev/ad6 ( 看你那顆HD要來做同步 )
           remote 192.168.1.52
       }
       on hastb {
           local /dev/ad6
           remote 192.168.1.51
       }
   }

   及執行下列指令

   # hastctl create test
   # /etc/rc.d/hastd onestart

   在 “primay” 機器上

   hastctl role primary test

   在 “secondary” 機器上

   # hastctl role secondary test

   接下來在 primary 就newfs, mount

   # newfs -U /dev/hast/test
   # mkdir -p /hast/test
   # mount /dev/hast/test /hast/test

   最後在編輯兩台機器/etc/rc.conf

   # hastd_enable="YES"

   這樣系統Boot後HAST就會自已啟動了…

3. Failover
   在之前的Wiki上是要搭配ifstated一起服用
   新的文件上則是透過devd來做
   作法如下
   編輯兩台機器的 /etc/devd.conf

   notify 30 {
       match "system" "IFNET";
       match "subsystem" "carp0";
       match "type" "LINK_UP";
       action "/usr/local/sbin/carp-hast-switch master";
   };
   
   notify 30 {
       match "system" "IFNET";
       match "subsystem" "carp0";
       match "type" "LINK_DOWN";
       action "/usr/local/sbin/carp-hast-switch slave";
   };

   詳細的意思可以man devd.conf
   接著重啟devd

   # /etc/rc.d/devd restart

   再來就是編輯/usr/local/sbin/carp-hast-switch 了( 兩台都要有 )

   #!/bin/sh
   
   # Original script by Freddie Cash <fjwcash@gmail.com>
   # Modified by Michael W. Lucas <mwlucas@BlackHelicopters.org>
   # and Viktor Petersson <vpetersson@wireload.net>
   
   # The names of the HAST resources, as listed in /etc/hast.conf
   resources="test"
   
   # delay in mounting HAST resource after becoming master
   # make your best guess
   delay=3
   
   # logging
   log="local0.debug"
   name="carp-hast"
   
   # wait_count
   wait_count=7
   
   # end of user configurable stuff
   
   case "$1" in
       master)
           logger -p $log -t $name "Switching to primary provider for ${resources}."
           sleep ${delay}
   
           # Wait for any "hastd secondary" processes to stop
           for disk in ${resources}; do
               while $( pgrep -lf "hastd: ${disk} \(secondary\)" > /dev/null 2>&1 && [ $wait_count -gt 0 ] ); do
   								logger -p $log -t $name "countdown => ${wait_count}."
   								wait_count=`expr $wait_count - 1`
                   sleep 1
               done
   						wait_count=7
   
               # Switch role for each disk
               hastctl role primary ${disk}
               if [ $? -ne 0 ]; then
                   logger -p $log -t $name "Unable to change role to primary for resource ${disk}."
                   exit 1
               fi
           done
   
           # Wait for the /dev/hast/* devices to appear
           for disk in ${resources}; do
               for I in $( jot 60 ); do
                   [ -c "/dev/hast/${disk}" ] && break
                   sleep 0.5
               done
   
               if [ ! -c "/dev/hast/${disk}" ]; then
                   logger -p $log -t $name "GEOM provider /dev/hast/${disk} did not appear."
                   exit 1
               fi
           done
   
           logger -p $log -t $name "Role for HAST resources ${resources} switched to primary."
   
           logger -p $log -t $name "Mounting disks."
           for disk in ${resources}; do
               mkdir -p /hast/${disk}
               fsck -p -y -t ufs /dev/hast/${disk}
               mount /dev/hast/${disk} /hast/${disk}
   	    ## start mysql server
   	    logger -p $log -t $name "start mysql"
   	    /bin/sh /usr/local/etc/rc.d/mysql-server start
           done
   
       ;;
   
       slave)
           logger -p $log -t $name "Switching to secondary provider for ${resources}."
   
           # Switch roles for the HAST resources
           for disk in ${resources}; do
               if ! mount | grep -q "^/dev/hast/${disk} on "
               then
               else
   	        ## stop mysql server
                   logger -p $log -t $name "stop mysql"
   	        /bin/sh /usr/local/etc/rc.d/mysql-server stop
   	        sleep 0.5
   	        ## umount
                   logger -p $log -t $name "umount ${disk}."
                   umount -f /hast/${disk}
               fi
               sleep $delay
               hastctl role secondary ${disk} 2>&1
               if [ $? -ne 0 ]; then
                   logger -p $log -t $name "Unable to switch role to secondary for resource ${disk}."
                   exit 1
               fi
               logger -p $log -t $name "Role switched to secondary for resource ${disk}."
           done
       ;;
   esac

   這個script我有改了一小部份, 加入了mysql 的啟動, 和最大等待次數

4. 測試方法

   # ifconfig carp0 down && ifconfig carp0 up

   然後用 hastctl status test 觀看吧

5. 錯誤回復
   確定那一台的資料比較新, 在舊的那台執行

   # hastctl role init <resource>
   # hastctl create <resource>
   # hastctl role secondary <resource>

   然後觀看 primary 的 HAST status 應該會發現 dirty: 的部份會重跑

MySQL

1. 請把DB 的 dir 設到HAST 上面
   我的/etc/rc.conf 設定如下

   ## MYSQL
   mysql_enable="YES"
   mysql_dbdir="/hast/test/mysql"
   mysql_args="--bind-address=192.168.1.50 --skip-name-resolve"

   然後把/usr/local/etc/rc.d/mysql-server 的權限設成000
   怕mysql 在開機後自已啟了

注意事項

1. 不要在 dirty: 還有值的情況下去切換 primary, secondary 會爆炸的
2. 請打開 promiscuous model 不然完全ping不到vip
3. 可以把 secondary 這台機器的開機加上delay, 以防整個機房跳電, primary, secondary 同時開機造成split-brain
   編輯/boot/loader.conf

   ## delay secondary boot
   autoboot_delay="240"

參考資料

1. http://www.freebsd.org/doc/handbook/carp.html
2. http://www.freebsd.org/doc/handbook/disks-hast.html
3. http://www.openbsd.org/faq/pf/carp.html
4. http://developer.51cto.com/art/200509/3863.htm
5. man hast
6. man hastctl
7. man carp
8. man devd.conf
9. /usr/src/sys/netinet/ip_carp.c ( 因為我man carp 怎麼樣都沒看到他說 net.inet.carp.preempt 設成1 就會failback……, 所以就開這個來看, 裡面的 http://paste.plurk.com/show/394406/ 有寫到 )

debug

1. /var/log/message
2. /var/log/debug.log

截圖

今天有相當多媽媽的朋友親戚們來看媽媽
有偉定叔叔、阿美阿姨、阿香阿姨、蕭富美阿姨、二姑、表姐(二姑)、小姑、小姑丈、大表哥(小姑丈)、小表哥(小姑丈)
俊豪堂哥、小舅、小舅媽、小表妹(小舅小女兒)、阿卿阿姨、邵小娥阿姨、陳麗華阿姨、外公、外婆、阿香(台語)、涂金生叔叔、克明、小阿姨全家

然後阿卿阿姨、邵小娥阿姨、陳麗華阿姨，他們在幫媽媽挑他的一些照片準備在追思會上用。
這樣弄一弄也下午一兩點了、
然後再挑照片掃描整理大約六點多時載”三姑姑”回家，順便拿星期二上班要穿的衣服
也和kiang見了面拿了書，kiang 真的很多禮，只能說kiang 人真的相當好，我會好好放在心上的
謝謝kiang ~

明天還要再和二姑姑去看一次塔位
這樣就差不多準備回去上班
等下星期一媽媽出殯後再記錄~

先安裝及設定

http://redmineblog.com/articles/setup-redmine-to-send-email-using-gmail/

照最下面去改smtp_tls.rb

http://www.redmine.org/boards/2/topics/4833

測試
1. Login as an administrator
2. Go to the Administration panel
3. Go into the Settings and select the “Email notifications” tab
4. In the bottom right, click the link to “Send a test email”

今天整天的計劃就是掃描媽媽的照片，準備做投影片，及將來媽媽的相簿網站用
邊掃邊看我媽年輕時的照片感覺”肉肉的”XD
稱不上正妹，不過就中規中矩的
當時的個性感覺個性應該相當活潑

也在整理照片的時後，感覺媽媽在整理東西處理事情的時後都很有條有序的
很多東西真的都整理的滿好的
在找的過程中也發現媽媽將我過往的獎狀、成績單都留著
還有找到氣喘的就醫記錄、免役證書、幼稚園的畢業紀念冊( 這個最扯, 竟然還留著 )
只能說好吧~媽~~做事這麼有條有序~~我學的還不夠好…可以說幾乎不像你XD

今天原本是計劃要跑國稅局, 及稅捐處一趟
不過後來因為緊急處理了一下某客戶的mail server 的問題
將spam filter 換成dspam
看一看時間也大約下午了
就準備媽媽頭七的事

約未晚上九點時，師父們也來頌經，整個過程含休息大約2個小時
不過~~我沒有感覺我媽媽有回來的fu…