南非蚂蚁,著名Linux专家,知名IT作家。毕业于西安电子科技大学通信工程专业,爱好计算机,毕业后从事计算机行业。曾就职于新浪网、阿里云(万网),任职系统架构师。曾出版畅销书《循序渐进Linux》、《高性能Linux服务器构建实战》作者。
发布时间:2016-03-09 13:59:42
由国内著名技术社区Chinaunix鼎力推荐、人民邮电出版社出品,南非蚂蚁(高俊峰)最新技术力作《循序渐进Linux》第二版已经上架发行,此书以Redhat Linux、Centos两个Linux发行版为主进行介绍,采用的具体版本为Centos7.x/RHEL7.x;在章节上会更加突出重点,理论结合实际,企业案例和应用实战部分会增多; 在基.........【阅读全文】
发布时间:2015-12-25 14:36:50
从《循序渐进Linux》第一版发布,到现在已经近6年了,6年的时间,技术发生了很大的变化,Linux系统的内核版本从2.6.9(RHEL4.x)已经更新到了现在的3.10(Centos7.x),第一版中的部分内容已经陈旧,Linux系统部分运行机制也发生了很大变化,为了适应技术发展潮流,也为了所有支持这本书的读者,我决定重新修订本书,推出《.........【阅读全文】
exitgogo2016-02-03 15:17
saup007:双主MySQL配置Keepalived,2个角色都为BACKUP,
A节点:
vrrp_script chk_mysql_server {
#script "/opt/keepalived/script/chk_mysql_server.sh"
script "killall -0 mysqld"
interval 30 # 检测时间为30s
weight 21
}
vrrp_instance VI_1 {
state BACKUP
interface eth1
virtual_router_id 59
priority 100
advert_int 1
nopreempt
#mcas_src_ip 172.19.1.201
authentication {
auth_type PASS
auth_pass 1111
}
notify_master "/opt/keepalived/script/master.sh"
notify_backup "/opt/keepalived/script/backup.sh"
notify_fault "/opt/keepalived/script/fault.sh"
notify_stop "/opt/keepalived/script/stop.sh"
track_script {
chk_mysql_server
}
virtual_ipaddress {
172.19.1.249/24 dev eth1 scope global label eth1:0
}
}
B节点:
priority 90
#nopreempt
当停掉A的MySQL,正常切换到B,当把A MySQL启来后,vip依然在B,这个符合逻辑,但把A MySQL启来后,再去停掉B MySQL,VIP却没有飘移到A上,why?
vrrp_script chk_mysql_server {
#script "/opt/keepalived/script/chk_mysql_server.sh"
script "killall -0 mysqld"
interval 30 # 检测时间为30s
weight 21
}
这里面的权重设置有问题,修改weight值
saup0072015-08-27 15:16
双主MySQL配置Keepalived,2个角色都为BACKUP,
A节点:
vrrp_script chk_mysql_server {
#script "/opt/keepalived/script/chk_mysql_server.sh"
script "killall -0 mysqld"
interval 30 # 检测时间为30s
weight 21
}
vrrp_instance VI_1 {
state BACKUP
interface eth1
virtual_router_id 59
priority 100
advert_int 1
nopreempt
#mcas_src_ip 172.19.1.201
authentication {
auth_type PASS
auth_pass 1111
}
notify_master "/opt/keepalived/script/master.sh"
notify_backup "/opt/keepalived/script/backup.sh"
notify_fault "/opt/keepalived/script/fault.sh"
notify_stop "/opt/keepalived/script/stop.sh"
track_script {
chk_mysql_server
}
virtual_ipaddress {
172.19.1.249/24 dev eth1 scope global label eth1:0
}
}
B节点:
priority 90
#nopreempt
当停掉A的MySQL,正常切换到B,当把A MySQL启来后,vip依然在B,这个符合逻辑,但把A MySQL启来后,再去停掉B MySQL,VIP却没有飘移到A上,why?