oracle 11g crs检测结果
+ASM1@testdb11a /oracle/media/grid$ ./runcluvfy.sh stage -pre crsinst -n testdb11a,testdb11b -verbose Performing pre-checks for cluster services setup Checking node reachability... Check: Node reachability from node "testdb11a"
Destination Node Reachable?
------------------------------------ ------------------------
testdb11b yes
testdb11a yes
Result: Node reachability check passed from node "testdb11a" Checking user equivalence... Check: User equivalence for user "grid"
Node Name Status
------------------------------------ ------------------------
testdb11b passed
testdb11a passed
Result: User equivalence check passed for user "grid" Checking node connectivity... Checking hosts config file...
Node Name Status
------------------------------------ ------------------------
testdb11b passed
testdb11a passed Verification of the hosts config file successful Interface information for node "testdb11b"
Name IP Address Subnet Gateway Def. Gateway HW Address MTU
------ --------------- --------------- --------------- --------------- ----------------- ------
eth0 192.168.1.21 192.168.1.0 0.0.0.0 192.168.1.1 :0C::B6::
eth0 192.168.1.24 192.168.1.0 0.0.0.0 192.168.1.1 :0C::B6::
eth0 192.168.1.23 192.168.1.0 0.0.0.0 192.168.1.1 :0C::B6::
eth1 192.168.2.21 192.168.2.0 0.0.0.0 192.168.1.1 :0C::B6::5E
eth1 169.254.164.12 169.254.0.0 0.0.0.0 192.168.1.1 :0C::B6::5E
eth2 192.168.1.115 192.168.1.0 0.0.0.0 192.168.1.1 :0C::B6:: Interface information for node "testdb11a"
Name IP Address Subnet Gateway Def. Gateway HW Address MTU
------ --------------- --------------- --------------- --------------- ----------------- ------
eth0 192.168.1.20 192.168.1.0 0.0.0.0 192.168.2.1 :0C::0B:FD:9E
eth0 192.168.1.22 192.168.1.0 0.0.0.0 192.168.2.1 :0C::0B:FD:9E
eth1 192.168.2.20 192.168.2.0 0.0.0.0 192.168.2.1 :0C::0B:FD:A8
eth1 169.254.209.140 169.254.0.0 0.0.0.0 192.168.2.1 :0C::0B:FD:A8 Check: Node connectivity of subnet "192.168.1.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11b[192.168.1.21] testdb11b[192.168.1.24] yes
testdb11b[192.168.1.21] testdb11b[192.168.1.23] yes
testdb11b[192.168.1.21] testdb11b[192.168.1.115] yes
testdb11b[192.168.1.21] testdb11a[192.168.1.20] yes
testdb11b[192.168.1.21] testdb11a[192.168.1.22] yes
testdb11b[192.168.1.24] testdb11b[192.168.1.23] yes
testdb11b[192.168.1.24] testdb11b[192.168.1.115] yes
testdb11b[192.168.1.24] testdb11a[192.168.1.20] yes
testdb11b[192.168.1.24] testdb11a[192.168.1.22] yes
testdb11b[192.168.1.23] testdb11b[192.168.1.115] yes
testdb11b[192.168.1.23] testdb11a[192.168.1.20] yes
testdb11b[192.168.1.23] testdb11a[192.168.1.22] yes
testdb11b[192.168.1.115] testdb11a[192.168.1.20] yes
testdb11b[192.168.1.115] testdb11a[192.168.1.22] yes
testdb11a[192.168.1.20] testdb11a[192.168.1.22] yes
Result: Node connectivity passed for subnet "192.168.1.0" with node(s) testdb11b,testdb11a Check: TCP connectivity of subnet "192.168.1.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11a:192.168.1.20 testdb11b:192.168.1.21 passed
testdb11a:192.168.1.20 testdb11b:192.168.1.24 passed
testdb11a:192.168.1.20 testdb11b:192.168.1.23 passed
testdb11a:192.168.1.20 testdb11b:192.168.1.115 passed
testdb11a:192.168.1.20 testdb11a:192.168.1.22 passed
Result: TCP connectivity check passed for subnet "192.168.1.0" Check: Node connectivity of subnet "192.168.2.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11b[192.168.2.21] testdb11a[192.168.2.20] yes
Result: Node connectivity passed for subnet "192.168.2.0" with node(s) testdb11b,testdb11a Check: TCP connectivity of subnet "192.168.2.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11a:192.168.2.20 testdb11b:192.168.2.21 passed
Result: TCP connectivity check passed for subnet "192.168.2.0" Check: Node connectivity of subnet "169.254.0.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11b[169.254.164.12] testdb11a[169.254.209.140] yes
Result: Node connectivity passed for subnet "169.254.0.0" with node(s) testdb11b,testdb11a Check: TCP connectivity of subnet "169.254.0.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
testdb11a:169.254.209.140 testdb11b:169.254.164.12 passed
Result: TCP connectivity check passed for subnet "169.254.0.0" Interfaces found on subnet "169.254.0.0" that are likely candidates for VIP are:
testdb11b eth1:169.254.164.12
testdb11a eth1:169.254.209.140 WARNING:
Could not find a suitable set of interfaces for the private interconnect
Checking subnet mask consistency...
Subnet mask consistency check passed for subnet "192.168.1.0".
Subnet mask consistency check passed for subnet "192.168.2.0".
Subnet mask consistency check passed for subnet "169.254.0.0".
Subnet mask consistency check passed. Result: Node connectivity check passed Checking multicast communication... Checking subnet "192.168.1.0" for multicast communication with multicast group "230.0.1.0"...
Check of subnet "192.168.1.0" for multicast communication with multicast group "230.0.1.0" passed. Checking subnet "192.168.2.0" for multicast communication with multicast group "230.0.1.0"...
Check of subnet "192.168.2.0" for multicast communication with multicast group "230.0.1.0" passed. Checking subnet "169.254.0.0" for multicast communication with multicast group "230.0.1.0"...
Check of subnet "169.254.0.0" for multicast communication with multicast group "230.0.1.0" passed. Check of multicast communication passed. Checking ASMLib configuration.
Node Name Status
------------------------------------ ------------------------
testdb11b passed
testdb11a passed
Result: Check for ASMLib configuration passed. Check: Total memory
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b .8672MB (.0KB) .5GB (.0KB) failed
testdb11a .8672MB (.0KB) .5GB (.0KB) failed
Result: Total memory check failed Check: Available memory
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b .4297MB (.0KB) 50MB (.0KB) passed
testdb11a .5391MB (.0KB) 50MB (.0KB) passed
Result: Available memory check passed Check: Swap space
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b .9687GB (.0KB) .5GB (.0KB) passed
testdb11a .9687GB (.0KB) .5GB (.0KB) passed
Result: Swap space check passed Check: Free disk space for "testdb11b:/u01/app/11.2.0/grid,testdb11b:/tmp"
Path Node Name Mount point Available Required Status
---------------- ------------ ------------ ------------ ------------ ------------
/u01/app/11.2./grid testdb11b / .9961GB .5GB passed
/tmp testdb11b / .9961GB .5GB passed
Result: Free disk space check passed for "testdb11b:/u01/app/11.2.0/grid,testdb11b:/tmp" Check: Free disk space for "testdb11a:/u01/app/11.2.0/grid,testdb11a:/tmp"
Path Node Name Mount point Available Required Status
---------------- ------------ ------------ ------------ ------------ ------------
/u01/app/11.2./grid testdb11a / .7471GB .5GB failed
/tmp testdb11a / .7471GB .5GB failed
Result: Free disk space check failed for "testdb11a:/u01/app/11.2.0/grid,testdb11a:/tmp" Check: User existence for "grid"
Node Name Status Comment
------------ ------------------------ ------------------------
testdb11b passed exists()
testdb11a passed exists() Checking for multiple users with UID value
Result: Check for multiple users with UID value passed
Result: User existence check passed for "grid" Check: Group existence for "oinstall"
Node Name Status Comment
------------ ------------------------ ------------------------
testdb11b passed exists
testdb11a passed exists
Result: Group existence check passed for "oinstall" Check: Group existence for "dba"
Node Name Status Comment
------------ ------------------------ ------------------------
testdb11b passed exists
testdb11a passed exists
Result: Group existence check passed for "dba" Check: Membership of user "grid" in group "oinstall" [as Primary]
Node Name User Exists Group Exists User in Group Primary Status
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b yes yes yes yes passed
testdb11a yes yes yes yes passed
Result: Membership check for user "grid" in group "oinstall" [as Primary] passed Check: Membership of user "grid" in group "dba"
Node Name User Exists Group Exists User in Group Status
---------------- ------------ ------------ ------------ ----------------
testdb11b yes yes yes passed
testdb11a yes yes yes passed
Result: Membership check for user "grid" in group "dba" passed Check: Run level
Node Name run level Required Status
------------ ------------------------ ------------------------ ----------
testdb11b , passed
testdb11a , passed
Result: Run level check passed Check: Hard limits for "maximum open file descriptors"
Node Name Type Available Required Status
---------------- ------------ ------------ ------------ ----------------
testdb11b hard passed
testdb11a hard passed
Result: Hard limits check passed for "maximum open file descriptors" Check: Soft limits for "maximum open file descriptors"
Node Name Type Available Required Status
---------------- ------------ ------------ ------------ ----------------
testdb11b soft passed
testdb11a soft passed
Result: Soft limits check passed for "maximum open file descriptors" Check: Hard limits for "maximum user processes"
Node Name Type Available Required Status
---------------- ------------ ------------ ------------ ----------------
testdb11b hard passed
testdb11a hard passed
Result: Hard limits check passed for "maximum user processes" Check: Soft limits for "maximum user processes"
Node Name Type Available Required Status
---------------- ------------ ------------ ------------ ----------------
testdb11b soft passed
testdb11a soft passed
Result: Soft limits check passed for "maximum user processes" Check: System architecture
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b x86_64 x86_64 passed
testdb11a x86_64 x86_64 passed
Result: System architecture check passed Check: Kernel version
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b 2.6.-.el5 2.6. passed
testdb11a 2.6.-.el5 2.6. passed
Result: Kernel version check passed Check: Kernel parameter for "semmsl"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "semmsl" Check: Kernel parameter for "semmns"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "semmns" Check: Kernel parameter for "semopm"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "semopm" Check: Kernel parameter for "semmni"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "semmni" Check: Kernel parameter for "shmmax"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "shmmax" Check: Kernel parameter for "shmmni"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "shmmni" Check: Kernel parameter for "shmall"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "shmall" Check: Kernel parameter for "file-max"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "file-max" Check: Kernel parameter for "ip_local_port_range"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b between 9000.0 & 65500.0 between 9000.0 & 65500.0 between 9000.0 & 65500.0 passed
testdb11a between 9000.0 & 65500.0 between 9000.0 & 65500.0 between 9000.0 & 65500.0 passed
Result: Kernel parameter check passed for "ip_local_port_range" Check: Kernel parameter for "rmem_default"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "rmem_default" Check: Kernel parameter for "rmem_max"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "rmem_max" Check: Kernel parameter for "wmem_default"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "wmem_default" Check: Kernel parameter for "wmem_max"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "wmem_max" Check: Kernel parameter for "aio-max-nr"
Node Name Current Configured Required Status Comment
---------------- ------------ ------------ ------------ ------------ ------------
testdb11b passed
testdb11a passed
Result: Kernel parameter check passed for "aio-max-nr" Check: Package existence for "make"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b make-3.81-.el5 make-3.81 passed
testdb11a make-3.81-.el5 make-3.81 passed
Result: Package existence check passed for "make" Check: Package existence for "binutils"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b binutils-2.17.50.0.-.el5 binutils-2.17.50.0. passed
testdb11a binutils-2.17.50.0.-.el5 binutils-2.17.50.0. passed
Result: Package existence check passed for "binutils" Check: Package existence for "gcc(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b gcc(x86_64)-4.1.-.el5 gcc(x86_64)-4.1. passed
testdb11a gcc(x86_64)-4.1.-.el5 gcc(x86_64)-4.1. passed
Result: Package existence check passed for "gcc(x86_64)" Check: Package existence for "libaio(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b libaio(x86_64)-0.3.- libaio(x86_64)-0.3. passed
testdb11a libaio(x86_64)-0.3.- libaio(x86_64)-0.3. passed
Result: Package existence check passed for "libaio(x86_64)" Check: Package existence for "glibc(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b glibc(x86_64)-2.5- glibc(x86_64)-2.5- passed
testdb11a glibc(x86_64)-2.5- glibc(x86_64)-2.5- passed
Result: Package existence check passed for "glibc(x86_64)" Check: Package existence for "compat-libstdc++-33(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b compat-libstdc++-(x86_64)-3.2.- compat-libstdc++-(x86_64)-3.2. passed
testdb11a compat-libstdc++-(x86_64)-3.2.- compat-libstdc++-(x86_64)-3.2. passed
Result: Package existence check passed for "compat-libstdc++-33(x86_64)" Check: Package existence for "elfutils-libelf(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b elfutils-libelf(x86_64)-0.137-.el5 elfutils-libelf(x86_64)-0.125 passed
testdb11a elfutils-libelf(x86_64)-0.137-.el5 elfutils-libelf(x86_64)-0.125 passed
Result: Package existence check passed for "elfutils-libelf(x86_64)" Check: Package existence for "elfutils-libelf-devel"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b elfutils-libelf-devel-0.137-.el5 elfutils-libelf-devel-0.125 passed
testdb11a elfutils-libelf-devel-0.137-.el5 elfutils-libelf-devel-0.125 passed WARNING:
PRVF- : Multiple versions of package "elfutils-libelf-devel" found on node testdb11b: elfutils-libelf-devel(i386)-0.137-.el5,elfutils-libelf-devel(x86_64)-0.137-.el5 WARNING:
PRVF- : Multiple versions of package "elfutils-libelf-devel" found on node testdb11a: elfutils-libelf-devel(i386)-0.137-.el5,elfutils-libelf-devel(x86_64)-0.137-.el5
Result: Package existence check passed for "elfutils-libelf-devel" Check: Package existence for "glibc-common"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b glibc-common-2.5- glibc-common-2.5 passed
testdb11a glibc-common-2.5- glibc-common-2.5 passed
Result: Package existence check passed for "glibc-common" Check: Package existence for "glibc-devel(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b glibc-devel(x86_64)-2.5- glibc-devel(x86_64)-2.5 passed
testdb11a glibc-devel(x86_64)-2.5- glibc-devel(x86_64)-2.5 passed
Result: Package existence check passed for "glibc-devel(x86_64)" Check: Package existence for "glibc-headers"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b glibc-headers-2.5- glibc-headers-2.5 passed
testdb11a glibc-headers-2.5- glibc-headers-2.5 passed
Result: Package existence check passed for "glibc-headers" Check: Package existence for "gcc-c++(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b gcc-c++(x86_64)-4.1.-.el5 gcc-c++(x86_64)-4.1. passed
testdb11a gcc-c++(x86_64)-4.1.-.el5 gcc-c++(x86_64)-4.1. passed
Result: Package existence check passed for "gcc-c++(x86_64)" Check: Package existence for "libaio-devel(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b libaio-devel(x86_64)-0.3.- libaio-devel(x86_64)-0.3. passed
testdb11a libaio-devel(x86_64)-0.3.- libaio-devel(x86_64)-0.3. passed
Result: Package existence check passed for "libaio-devel(x86_64)" Check: Package existence for "libgcc(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b libgcc(x86_64)-4.1.-.el5 libgcc(x86_64)-4.1. passed
testdb11a libgcc(x86_64)-4.1.-.el5 libgcc(x86_64)-4.1. passed
Result: Package existence check passed for "libgcc(x86_64)" Check: Package existence for "libstdc++(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b libstdc++(x86_64)-4.1.-.el5 libstdc++(x86_64)-4.1. passed
testdb11a libstdc++(x86_64)-4.1.-.el5 libstdc++(x86_64)-4.1. passed
Result: Package existence check passed for "libstdc++(x86_64)" Check: Package existence for "libstdc++-devel(x86_64)"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b libstdc++-devel(x86_64)-4.1.-.el5 libstdc++-devel(x86_64)-4.1. passed
testdb11a libstdc++-devel(x86_64)-4.1.-.el5 libstdc++-devel(x86_64)-4.1. passed
Result: Package existence check passed for "libstdc++-devel(x86_64)" Check: Package existence for "sysstat"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b sysstat-7.0.-.el5 sysstat-7.0. passed
testdb11a sysstat-7.0.-.el5 sysstat-7.0. passed
Result: Package existence check passed for "sysstat" Check: Package existence for "ksh"
Node Name Available Required Status
------------ ------------------------ ------------------------ ----------
testdb11b ksh--.el5 ksh- passed
testdb11a ksh--.el5 ksh- passed
Result: Package existence check passed for "ksh" Checking for multiple users with UID value
Result: Check for multiple users with UID value passed Check: Current group ID
Result: Current group ID check passed Starting check for consistency of primary group of root user
Node Name Status
------------------------------------ ------------------------
testdb11b passed
testdb11a passed Check for consistency of root user's primary group passed Starting Clock synchronization checks using Network Time Protocol(NTP)... NTP Configuration file check started...
Network Time Protocol(NTP) configuration file not found on any of the nodes. Oracle Cluster Time Synchronization Service(CTSS) can be used instead of NTP for time synchronization on the cluster nodes
No NTP Daemons or Services were found to be running Result: Clock synchronization check using Network Time Protocol(NTP) passed Checking Core file name pattern consistency...
Core file name pattern consistency check passed. Checking to make sure user "grid" is not in "root" group
Node Name Status Comment
------------ ------------------------ ------------------------
testdb11b passed does not exist
testdb11a passed does not exist
Result: User "grid" is not part of "root" group. Check passed Check default user file creation mask
Node Name Available Required Comment
------------ ------------------------ ------------------------ ----------
testdb11b passed
testdb11a passed
Result: Default user file creation mask check passed
Checking consistency of file "/etc/resolv.conf" across nodes Checking the file "/etc/resolv.conf" to make sure only one of domain and search entries is defined
File "/etc/resolv.conf" does not have both domain and search entries defined
Checking if domain entry in file "/etc/resolv.conf" is consistent across the nodes...
domain entry in file "/etc/resolv.conf" is consistent across nodes
Checking if search entry in file "/etc/resolv.conf" is consistent across the nodes...
search entry in file "/etc/resolv.conf" is consistent across nodes
Checking file "/etc/resolv.conf" to make sure that only one search entry is defined
All nodes have one search entry defined in file "/etc/resolv.conf"
Checking all nodes to make sure that search entry is "localdomain" as found on node "testdb11b"
All nodes of the cluster have same value for 'search'
Checking DNS response time for an unreachable node
Node Name Status
------------------------------------ ------------------------
testdb11b passed
testdb11a passed
The DNS response time for an unreachable node is within acceptable limit on all nodes File "/etc/resolv.conf" is consistent across nodes Check: Time zone consistency
Result: Time zone consistency check passed Pre-check for cluster services setup was unsuccessful on all the nodes.
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NGUI中我们要同时完成Scale与Transform的效果,会发现动画并不是同我们想的那样运行的. 原因就是Tween Scale与Tween Transform的冲突调用. Tween Scale ...
- HTML5魔法堂：全面理解Drag & Drop API
一.前言 在HTML4的时代,各前端工程师为了实现拖拽功能可说是煞费苦心,初听HTML5的DnD API觉得那些痛苦的日子将一去不复返,但事实又是怎样的呢?下面我们一起来看看DnD API的真面 ...
- Windows操作系统
Microsoft Windows,是美国微软公司研发的一套操作系统,它问世于1985年,起初仅仅是Microsoft-DOS模拟环境,后续的系统版本由于微软不断的更新升级,不但易用,也慢慢的成为家家 ...
- linux下apache各种跳转（包括伪静态）的配置
1.404跳转: vi /etc/httpd/conf/httpd.conf 在虚拟主机配置里添加一行:ErrorDocument 404 /404.html 2.301跳转: 1)将不带www的 ...
- python requests模块使用
python的网络编程能力十分强大,其中python中的requests库宣言:HTTP for Humans (给人用的 HTTP 库) 在网络编程中,最基本的任务包含: 发送请求 登录 获取数据 ...
- CSS3按钮效果
来自codepen,http://codepen.io/PalashSharma20/pen/YWBAgN 知识点:屏幕居中.transform.transition.transition-delay ...