mogilefs工作原理
我們來做一個這樣的
上面的memcached應該放在，nginx旁邊。
由nginx去查詢memcached，沒有再找tracker，找到後由nginx緩存到memcached..
2,rpm安裝
[root@node2 ~]# ls
MogileFS-Server-2.46-2.el6.noarch.rpm
MogileFS-Server-mogilefsd-2.46-2.el6.noarch.rpm
MogileFS-Server-mogstored-2.46-2.el6.noarch.rpm
MogileFS-Utils-2.19-1.el6.noarch.rpm
perl-Danga-Socket-1.61-5.el6.noarch.rpm
perl-IO-AIO-3.71-2.el6.x86_64.rpm
perl-IO-stringy-2.110-10.1.el6.noarch.rpm
perl-MogileFS-Client-1.14-1.el6.noarch.rpm
perl-Net-Netmask-1.9015-8.el6.noarch.rpm
perl-Perlbal-1.78-1.el6.noarch.rpm
perl-Sys-Syscall-0.23-1.el6.noarch.rpm
[root@node2 ~]# yum install *.rpm -y
安裝mysql
# yum -y install mysql-server mysql
#service mysqld start
授權
mysql> update user set password=password('redhat') where user='root';
mysql> grant all on mogilefs.* to mogilefs@'192.168.93.%' identified by 'redhat';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
添加用戶
# useradd -r mogilefs
提供一個配置文件
mkdir /etc/mogilefs
vim /etc/mogilefs/mogilefsd.conf
# Enable daemon mode to work in background and use syslog
daemonize = 1
# Where to store the pid of the daemon (must be the same in the init script)
pidfile = /var/run/mogilefsd/mogilefsd.pid
# Database connection information
db_dsn = DBI:mysql:mogilefs:host=192.168.93.103
db_user = mogilefs
db_pass = redhat
# IP:PORT to listen on for mogilefs client requests
listen = 192.168.93.102:7001
# Optional, if you don't define the port above.
conf_port = 7001
# Number of query workers to start by default.
query_jobs = 10
# Number of delete workers to start by default.
delete_jobs = 1
# Number of replicate workers to start by default.
replicate_jobs = 5
# Number of reaper workers to start by default.
# (you don't usually need to increase this)
reaper_jobs = 1
改權限
# chown -R mogilefs.mogilefs /etc/mogilefs/
#chown -R mogilefs.mogilefs /var/run/mogilefsd/
初始化數據庫
mogdbsetup --dbhost=192.168.93.103 --dbrootuser=root --dbrootpass=redhat --dbuser=mogilefs --dbpass=redhat --dbname=mogilefs
啓動服務
service mogilefsd start
配置storage
[root@node2 var]# vim /etc/mogilefs/mogstored.conf
maxconns = 10000
httplisten = 0.0.0.0:7500
mgmtlisten = 0.0.0.0:7501
docroot = /data/mogilefs
# mkdir -pv /data/mogilefs/dev1
# chown -R mogilefs.mogilefs /data/mogilefs/
啓動服務
# /etc/init.d/mogstored start
添加節點
[root@node2 ~]# mogadm --trackers=192.168.93.102:7001 host add node2.xy.com --ip=192.168.93.102 --status=alive
[root@node2 ~]# mogadm --trackers=192.168.93.102:7001 host list
node2.xy.com [1]: alive
IP: 192.168.93.102:7500
node3.xy.com [2]: alive
IP: 192.168.93.103:7500
添加設備
[root@node2 ~]# mogadm --trackers=192.168.93.103:7001 device add node2.xy.com 1
[root@node2 ~]# mogadm --trackers=192.168.93.103:7001 device add node3.xy.com 2
添加設備時所使用的設備ID號必須要/var/mogdata中的編號一致
[root@node2 ~]# mogadm --trackers=192.168.93.103:7001 device list
node2.xy.com [1]: alive
used(G) free(G) total(G) weight(%)
dev1: alive 0.392 18.294 18.686 100
[root@node2 ~]# mogadm --trackers=192.168.93.102:7001 domain add p_w_picpath1
[root@node2 ~]# mogadm --trackers=192.168.93.102:7001 domain list
domain class mindevcount replpolicy hashtype
-------------------- -------------------- ------------- ------------ -------
p_w_picpath1 default 2 MultipleHosts() NONE
domain :區域
class:複製文件的最小單位 （最大爲64M,如果一個單文件超出此大小將拆分爲多個存儲）
上傳文件測試
# wget http://news.xj163.cn/tour/attachement/jpg/site2/20110429/001bb950e25a0f24eeb450.jpg
# mv 001bb950e25a0f24eeb450.jpg flo.jpg
# mogupload --trackers=192.168.93.103:7001 --domain=p_w_picpath1 --key='/test/flo.jpg' --file='./flo.jpg'
# moglistkeys --trackers=192.168.93.102:7001 --domain=p_w_picpath1
# mogfileinfo --trackers=192.168.93.102:7001 --domain=p_w_picpath1 --key='/test/flo.jpg'
- file: /test/flo.jpg
class: default
devcount: 2
domain: p_w_picpath1
fid: 7
key: /test/flo.jpg
length: 177504
- http://192.168.93.102:7500/dev1/0/000/000/0000000007.fid
- http://192.168.93.103:7500/dev2/0/000/000/0000000007.fid
可以看到沒有問題了
安裝nginx反代
要下載模塊
可以去這下載：https://github.com/vkholodkov/nginx-mogilefs-module
編譯nginx並加入模塊
./configure --prefix=/usr --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx/nginx.pid --lock-path=/var/lock/nginx.lock --user=nginx --group=nginx --with-http_flv_module --with-http_stub_status_module --with-http_gzip_static_module --http-client-body-temp-path=/var/tmp/nginx/client/ --http-proxy-temp-path=/var/tmp/nginx/proxy/ --http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi --http-scgi-temp-path=/var/tmp/nginx/scgi --with-pcre --add-module=../nginx-mogilefs-module-master --without-http_ssl_module
useradd nginx -r
提供一個nginx的啓動腳本
#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig: - 85 15
# description: Nginx is an HTTP(S) server, HTTP(S) reverse \
# proxy and IMAP/POP3 proxy server
# processname: nginx
# config: /etc/nginx/nginx.conf
# config: /etc/sysconfig/nginx
# pidfile: /var/run/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
nginx="/usr/sbin/nginx"
prog=$(basename $nginx)
NGINX_CONF_FILE="/etc/nginx/nginx.conf"
[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx
lockfile=/var/lock/subsys/nginx
make_dirs() {
# make required directories
user=`nginx -V 2>&1 | grep "configure arguments:" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`
options=`$nginx -V 2>&1 | grep 'configure arguments:'`
for opt in $options; do
if [ `echo $opt | grep '.*-temp-path'` ]; then
value=`echo $opt | cut -d "=" -f 2`
if [ ! -d "$value" ]; then
# echo "creating" $value
mkdir -p $value && chown -R $user $value
fi
fi
done
}
start() {
[ -x $nginx ] || exit 5
[ -f $NGINX_CONF_FILE ] || exit 6
make_dirs
echo -n $"Starting $prog: "
daemon $nginx -c $NGINX_CONF_FILE
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc $prog -QUIT
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
restart() {
configtest || return $?
stop
sleep 1
start
}
reload() {
configtest || return $?
echo -n $"Reloading $prog: "
killproc $nginx -HUP
RETVAL=$?
echo
}
force_reload() {
restart
}
configtest() {
$nginx -t -c $NGINX_CONF_FILE
}
rh_status() {
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart|configtest)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
exit 2
esacnginx的配置文件
upstream mogilefs {
server 192.168.93.102:7001;
server 192.168.93.103:7001; }
server {
listen 80;
server_name localhost;
location ~* ^(.*)$ {
mogilefs_tracker mogilefs;
mogilefs_domain p_w_picpath1;
mogilefs_noverify on;
mogilefs_pass $1 {
proxy_pass $mogilefs_path;
proxy_hide_header Content-Type;
proxy_buffering off;
}
}#service nginx start
在nginx上要指定domain，這樣才能保證是取的這個文件，因爲在不同的domain上key是可以重複的
默認情況下nginx只把文件名當key向後傳遞，所以要自己指定傳遞的key
啓用memcached
安裝Cache::Memcahced
cpan
>install Cache::Memcached
在tracker上啓用memcached，暫時還不知道怎麼用nginx使用memcahce存，知道的教教我。。
# mogadm --trackers=192.168.93.103:7001 settings set memcache_servers 192.168.93.102:11211
service mysqld stop
當停止mysqld後圖片還是能訪問
service memcached stop
又把memcahced停了後就不能訪問了
啓動mysqld又好了。。。
就不玩這麼無聊的遊戲了
[root@node2 nginx]# memcached-tool 127.0.0.1:11211 stats|egrep \(get\|set\)
cmd_get 14
cmd_set 2
get_hits 12
get_misses 2