It appears as though you do not have permission to view information for any of the hosts you requested…
If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI
and check the authorization options in your CGI configuration file.
修改/etc/cgi.cfg
vi /usr/local/nagios/cgi.cfg
use_authentication=1 #把1修改为0,保存
root@nagios#/etc/init.d/nagios restart
转载自：http://cqfish.blog.51cto.com/622299/150542
# ethtool -i eth0
driver: e1000e
version: 0.3.3.3-k6
firmware-version: 5.7-6
bus-info: 0000:0c:00.0
在Fedora 10里试图挂载另外一块硬盘，其中的一个分区是LVM2格式的，不能直接mount,方法记录如下，以备不时之需。
1.首先使用vgscan 扫描 lvm 结果如下
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while…
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM (created here) takes precedence over bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
Found volume group “VolGroup00″ using metadata type lvm2
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
Found volume group “VolGroup00″ using metadata type lvm2
2.通过 vgdisplay VolGroup00 查看 lvm 的 VG UUID
[root@localhost ~]# vgdisplay VolGroup00
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
— Volume group —
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 129.31 GB
PE Size 32.00 MB
Total PE 4138
Alloc PE / Size 4137 / 129.28 GB
Free PE / Size 1 / 32.00 MB
VG UUID bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
可以看出当前操作系统使用的VolGroup00的 VG UUID 是 bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
说明 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM 这个VG UUID 是要另一块硬盘的lvm 分区
3.将第二块硬盘的VG的名字重命名
[root@localhost ~]# vgrename 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM /dev/vg01
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM (created here) takes precedence over bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
Volume group “VolGroup00″ successfully renamed to “vg01″
这个时候通过 vgdisplay 就可以看到 VG的信息了
[root@localhost ~]# vgdisplay
— Volume group —
VG Name vg01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 34.50 GB
PE Size 32.00 MB
Total PE 1104
Alloc PE / Size 1103 / 34.47 GB
Free PE / Size 1 / 32.00 MB
VG UUID 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
— Volume group —
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 129.31 GB
PE Size 32.00 MB
Total PE 4138
Alloc PE / Size 4137 / 129.28 GB
Free PE / Size 1 / 32.00 MB
VG UUID bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
4.激活VG
VG重命名后，默认是非ACTIVE状态,我们要通过以下方式激活VG
[root@localhost ~]# lvscan
inactive ‘/dev/vg01/LogVol00′ [31.50 GB] inherit
inactive ‘/dev/vg01/LogVol01′ [2.97 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol00′ [125.41 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol01′ [3.88 GB] inherit
激活 VG
[root@localhost ~]# vgchange -ay /dev/vg01
2 logical volume(s) in volume group “vg01″ now active
查看状态
[root@localhost ~]# lvscan
ACTIVE ‘/dev/vg01/LogVol00′ [31.50 GB] inherit
ACTIVE ‘/dev/vg01/LogVol01′ [2.97 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol00′ [125.41 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol01′ [3.88 GB] inherit
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while…
Found volume group “vg01″ using metadata type lvm2
Found volume group “VolGroup00″ using metadata type lvm2
到此为止，可以挂载系统了！
5.挂载lvm文件系统
[root@localhost mnt]# mount /dev/vg01 /mnt/sdb3
就可以访问了
今天碰到数据库出错
Got error 28 from storage engine
查了一下，数据库文件所在的盘应该没事，应该是数据库用的临时目录空间不够
引用
磁盘临时空间不够导致。
解决办法：
清空/tmp目录，或者修改my.cnf中的tmpdir参数，指向具有足够空间目录
上面的说法应该比较清楚，还有一个类似的：
引用
mysql报以下错的解决方法
ERROR 1030 (HY000): Got error 28 from storage engine
出现此问题的原因：临时空间不够，无法执行此SQL语句
解决方法：将tmpdir指向一个硬盘空间很大的目录即可
原创内容如转载请注明：来自 阿权的书房
本帖地址：http://www.aslibra.com/blog/read.php/794.htm
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
|注意事项：如欲转载，请保留以下信息。谢谢
|文章出处：http://hi.baidu.com/_wang8
|>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
rm -rf 之后，文件未必是立即就被删除了..
还需要等占用此文件的进程将文件释放后，文件才开始执行删除操作。
rm -rf access_log
cat >access_log
rm -rf error_log
cat >error_log
[root@ccsafe local]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda1 99G 3.4G 91G 4% /
/dev/sdb1 276G 249G 13G 96% /data
none 2.0G 4.0K 2.0G 1% /dev/shm
/dev/sda3 167G 155G 3.4G 98% /usr/local
[root@ccsafe local]# du -h –max-depth=1 /usr/local/
92K /usr/local/page_creater
136M /usr/local/virus_info_svr
940K /usr/local/lib
140K /usr/local/share
8.0K /usr/local/include
76K /usr/local/sbin
36K /usr/local/virus
8.0K /usr/local/games
8.0K /usr/local/src
44K /usr/local/conf
24K /usr/local/man
276K /usr/local/monitor-base
4.9G /usr/local/mysql
76K /usr/local/etc
8.0K /usr/local/data
24M /usr/local/snmpd
8.0K /usr/local/libexec
1.2M /usr/local/external_lib
16K /usr/local/lost+found
15M /usr/local/bin
72K /usr/local/doc
42M /usr/local/apache2
5.1G /usr/local/
[root@ccsafe local]#
[root@ccsafe local]# /usr/local/apache2/bin/apachectl stop
httpd (no pid file) not running
[root@ccsafe local]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda1 99G 3.4G 91G 4% /
/dev/sdb1 276G 249G 13G 96% /data
none 2.0G 4.0K 2.0G 1% /dev/shm
/dev/sda3 167G 130G 29G 82% /usr/local
[root@ccsafe local]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda1 99G 3.4G 91G 4% /
/dev/sdb1 276G 249G 13G 96% /data
none 2.0G 4.0K 2.0G 1% /dev/shm
/dev/sda3 167G 88G 71G 56% /usr/local
[root@ccsafe local]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda1 99G 3.4G 91G 4% /
/dev/sdb1 276G 249G 13G 96% /data
none 2.0G 4.0K 2.0G 1% /dev/shm
/dev/sda3 167G 5.2G 154G 4% /usr/local
[root@ccsafe local]#
可以这样来检测：
[root@ccsec ~]# lsof |grep deleted
cat 8036 root 1w REG 253,0 5 483189 /root/aaa.txt (deleted)
[root@ccsec ~]#