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标题:
来讲讲:memcached 双机热备
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作者:
蒙在股里
时间:
2015-1-14 21:16
标题:
来讲讲:memcached 双机热备
小知识:Linux发展和成长过程始终依赖着五个重要支柱:UNIX操作系统、MINIX操作系统、GNU计划、POSIX标准和Internet网络。
1、需求背景
发明公司很多多少项目都用到memched。而且都是单点,memched办事器挂了就会影响营业,因而百度之,发明memched不成以集群,也没有看到有甚么高可用计划,可是发明了repcached(memched主从复制),分离LVS的NAT形式分歧端口转发完成memched双机HA,本文章纪录自己的部署历程,附属实战,没有笔墨性的申明,接待列位指导。
2、情况:
1、体系情况:
[/code]
CentOSrelease6.4(Final)
2、收集情况
[/code]
调剂机(master):
vip:172.28.26.100
vip1:172.28.16.100(lvs转发网关)
eth1:172.28.26.101(内网)
eth2:172.28.16.101(lvs转发网段)
调剂机(backup):
eth1:172.28.26.99(内网)
eth2:172.28.16.99(lvs转发网段)
memched备节点:
eth1:172.28.26.102(内网)
eth2:172.28.16.102(lvs转发网段)
memched主节点:
eth1:172.28.26.103(内网)
eth2:172.28.16.103(lvs转发网段)
3、路由战略
[/code]
调剂机(master):
echo
201eth1
>>/etc/iproute2/rt_tables
echo
defaulttableeth1via172.28.26.1deveth1
>/etc/sysconfig/network-scripts/route-eth1
echo
from172.28.26.101/255.255.255.255tableeth1
>/etc/sysconfig/network-scripts/
rule
-eth1
echo
from172.28.26.100/255.255.255.255tableeth1
>>/etc/sysconfig/network-scripts/
rule
-eth1
echo
from172.28.16.101/32tableZW_LVS_LAN
>/etc/sysconfig/network-scripts/
rule
-eth2
memched节点1:
echo
defaulttableZW_LVS_LANvia172.28.16.100
>/etc/sysconfig/network-scripts/route-eth2
echo
from172.28.16.0/24tableZW_LVS_LAN
>/etc/sysconfig/network-scripts/
rule
-eth2
echo
202ZW_LVS_LAN
>>/etc/iproute2/rt_tables
memched节点2:
echo
defaulttableZW_LVS_LANvia172.28.16.100
>/etc/sysconfig/network-scripts/route-eth2
echo
from172.28.16.0/24tableZW_LVS_LAN
>/etc/sysconfig/network-scripts/
rule
-eth2
echo
202ZW_LVS_LAN
>>/etc/iproute2/rt_tables
4、内核参数
[/code]
fs.file-
max
=1000000
kernel.core_uses_pid=1
kernel.msgmax=1048560
kernel.msgmnb=1073741824
kernel.shmall=4294967296
kernel.shmmax=68719476736
kernel.sysrq=0
net.core.netdev_max_backlog=1048576
net.core.rmem_default=2097152
net.core.rmem_max=16777216
net.core.somaxconn=1048576
net.core.wmem_default=2097152
net.core.wmem_max=16777216
net.ipv4.conf.
default
.accept_source_route=0
net.ipv4.conf.
default
.rp_filter=1
net.ipv4.ip_forward=1
net.ipv4.ip_local_port_range=102465000
net.ipv4.neigh.
default
.gc_thresh1=10240
net.ipv4.neigh.
default
.gc_thresh2=40960
net.ipv4.neigh.
default
.gc_thresh3=81920
net.ipv4.tcp_fin_timeout=1
net.ipv4.tcp_keepalive_intvl=15
net.ipv4.tcp_keepalive_probes=5
net.ipv4.tcp_keepalive_time=30
net.ipv4.tcp_max_orphans=3276800
net.ipv4.tcp_max_syn_backlog=1048576
net.ipv4.tcp_max_tw_buckets=50000
net.ipv4.tcp_mem=94500000915000000927000000
net.ipv4.tcp_orphan_retries=3
net.ipv4.tcp_reordering=5
net.ipv4.tcp_retrans_collapse=0
net.ipv4.tcp_retries2=5
net.ipv4.tcp_rmem=4096873804194304
net.ipv4.tcp_sack=1
net.ipv4.tcp_synack_retries=1
net.ipv4.tcp_syncookies=0
net.ipv4.tcp_syn_retries=1
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_tw_recycle=1
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_wmem=4096163844194304
net.ipv6.conf.
all
.disable_ipv6=1
net.ipv6.conf.
default
.disable_ipv6=1
net.ipv4.conf.eth0.rp_filter=1#memched节点不必要
net.ipv4.conf.eth1.rp_filter=1#memched节点不必要
net.ipv4.conf.eth2.rp_filter=1#memched节点不必要
net.ipv4.conf.
all
.rp_filter=0#memched节点不必要
3、办事安装
1、调剂机(master、backup)
[/code]
yum-yinstallipvsadmkeepalivedsendmail
2、memched节点1、memched节点2
[/code]
wgethttp://memcached.googlecode.com/files/memcached-1.4.15.tar.gz
wgethttp://www.monkey.org/~provos/libevent-1.4.13-stable.tar.gz
wgethttp://downloads.sourceforge.net/repcached/memcached-1.2.8-repcached-2.2.tar.gz
[/code]
tar-zxvflibevent-1.4.13-stable.tar.gz
cdlibevent-1.4.13-stable
./configure
--prefix=/usr/local
make
makeinstall
tar-zxvfmemcached-1.4.15.tar.gz
cdmemcached-1.4.15
./configure
--with-libevent=/usr/local
make
makeinstall
tar-zxvfmemcached-1.2.8-repcached-2.2.tar.gz
cdmemcached-1.2.8-repcached-2.2
./configure
--enable-replication
make
makeinstall
4、keepalived设置(master、backup)
[root@LVS1keepalived]#cat/etc/keepalived/gobal_module
[/code]<olclass="dp-sql"style="padding:5px0px;color:rgb(92,92,92);list-style-position:initial;list-style-image:initial;border-left-width:3px;border-style:nonenonenonesolid;border-left-color:rgb(20,107,0);margin:0px0px1px3em!important;"><liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
!
global
configurefile
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
global_defs{
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
notification_email{
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
navyaijm@qq.com
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
}
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
notification_email_fromnavyaijm@qq.com
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
smtp_server127.0.0.1
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
smtp_connect_timeout30
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
router_idZH_DG_LVS1
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
}
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
[root@LVS1keepalived]#cat/etc/keepalived/keepalived.conf
<listyle="margin-left:20px;list-style:decimal-leading-zerooutside;line-height:1.3em;border:none;padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;">
!Keepalivedmainconfigurefile
<liclass="alt"style="padding:0px3px0px10px!important;margin-top:0px!important;margin-right:0px!important;margin-bottom:0px!important;margin-left:20px;list-style:decimal-leading-zerooutside;color:inherit;line-height:1.3em;border:none;">
include/etc/keepalived/gobal_module
作者:
简单生活
时间:
2015-1-17 09:44
其实当你安装了一个完整的Linux系统后其中已经包含了一个强大的帮助,只是可能你还没有发现和使用它们的技巧。
作者:
深爱那片海
时间:
2015-1-24 16:06
请问谁有Linux的学习心得的吗?简单的说说?
作者:
admin
时间:
2015-2-2 11:11
熟悉并掌握安装Linux,安装是学习的前提。目前较常见的安装方法有二种:
作者:
柔情似水
时间:
2015-2-7 19:16
写学习日记,这是学习历程的见证,同时我坚持认为是增强学习信念的法宝。
作者:
海妖
时间:
2015-2-23 10:49
老实说,第一个程序是在C中编译好的,调试好了才在Linux下运行,感觉用vi比较麻烦,因为有错了不能调试,只是提示错误。
作者:
若天明
时间:
2015-3-7 09:14
任何一个叫做操作系统的东西都是这样子构成的:内核+用户界面+一般应用程序。
作者:
活着的死人
时间:
2015-3-14 23:58
Linux只是个内核!这点很重要,你必须理解这一点。只有一个内核是不能构成一个操作系统的。
作者:
灵魂腐蚀
时间:
2015-3-21 18:19
编程学习及开发,Linux是免费,开源的操作系统,并且可开发工具相当多,如果您支持自由软件,一定要同广大热爱自由软件人士一同为其不懈努力。
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