错误 1
The program package-cleanup is found in the yum-utils package
# yum clean all # rpm --rebuilddb # yum update
使用解决方法仍然报错，根据错误信息 检查 /etc/yum.conf 确保 没有这行 exclude=*.i386 *.i586 *.i686
结束
原来使用yum 安装软件时会自动安装上两个版本的，xxx.i386 与 xxx.x86_64 ，由于我使用的基本是64 位操作系统，所以在 /etc/yum.conf 屏蔽安装所有 i386 软件包，造成了这个错误。
错误2
login: PAM [dlerror: /lib/security/pam_limits.so: cannot open shared object file: No such file or directory]
解决方法
vim /etc/pam.d/login 修改 "session required /lib/security/pam_limits.so" 为 "session required /lib64/security/pam_limits.so" 重启
错误3
/usr/local/php/bin/phpize Cannot find config.m4. Make sure that you run '/usr/local/php/bin/phpize' in the top level source directory of the module
解决方法
# ls config0.m4 CREDITS openssl.dsp php_openssl.h tests config.w32 openssl.c openssl.mak README xp_ssl.c # ln -s config0.m4 config.m4 # ls config0.m4 config.w32 openssl.c openssl.mak README xp_ssl.c config.m4 CREDITS openssl.dsp php_openssl.h tests # /usr/local/php/bin/phpize Configuring for: PHP Api Version: 20041225 Zend Module Api No: 20060613 Zend Extension Api No: 220060519
#3.1 We selected 'Asia/Chongqing' for 'CST/8.0/no DST'
cat /etc/sysconfig/clock ZONE="Asia/Shanghai" //修改一下php.ini的时区 date.timezone = Asia/Shanghai
错误4
Last login: Fri Mar 30 14:34:50 2012 from 172.0.0.50 id: cannot find name for group ID 525
useradd -g zm zm
或者
useradd -G zm zm
错误 5 netfilter 相关
Apr 1 13:29:24 haproxy_t kernel: nf_conntrack: table full, dropping packet. Apr 1 13:29:25 haproxy_t kernel: nf_conntrack: table full, dropping packet. Apr 1 13:29:25 haproxy_t kernel: nf_conntrack: table full, dropping packet. Apr 1 13:29:26 haproxy_t kernel: nf_conntrack: table full, dropping packet. Apr 1 13:29:32 haproxy_t kernel: possible SYN flooding on port 80. Sending cookies. Apr 1 13:30:32 haproxy_t kernel: possible SYN flooding on port 80. Sending cookies. Apr 1 13:31:32 haproxy_t kernel: possible SYN flooding on port 80. Sending cookies. Apr 1 13:32:32 haproxy_t kernel: possible SYN flooding on port 80. Sending cookies.
kernel: nf_conntrack: table full, dropping packet.
在/etc/sysctl.conf中加入：
net.ipv4.netfilter.ip_conntrack_max = 655350
net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 1200
立即生效
sysctl -p
统计
wc -l /proc/net/ip_conntrack
34546 /proc/net/ip_conntrack
在/etc/sysctl.conf中加入：
net.nf_conntrack_max = 100000
立即生效
sysctl -p
统计
wc -l /proc/net/nf_conntrack
51962 /proc/net/nf_conntrack
kernel 用 ip_conntrack 模块来记录 iptables 网络包的状态，并保存到 table 里（/proc/net/ip_conntrack|/proc/net/nf_conntrack），如果网络状况繁忙，比如高连接，高并发连接等会导致逐步占用这个 table 可用空间，一般这个 table 很大不容易占满并且可以自己清理，table 的记录会一直呆在 table 里占用空间直到源 IP 发一个 RST 包，但是如果出现被攻击、错误的网络配置、有问题的路由/路由器、有问题的网卡等情况的时候，就会导致源 IP 发的这个 RST 包收不到，这样就积累在 table 里，越积累越多直到占满，满了以后 iptables 就会丢包，出现外部无法连接服务器的情况。 知道问题就好办了，要么增加 table 容量以便能记录更多的连接信息（会消耗一点内存），要么就卸载 ip_conntrack 模块。
错误6 (编译 nrpe for nagios)
[root@three nrpe-2.13]# make all cd ./src/; make ; cd .. make[1]: Entering directory `/root/nagios/nrpe-2.13/src' gcc -g -O2 -I/usr/local/openssl/include/openssl -I/usr/local/openssl/include -DHAVE_CONFIG_H -o nrpe nrpe.c utils.c acl.c -L/usr/lib64 -lssl -lcrypto -lnsl -lwrap nrpe.c: In function ‘main’: nrpe.c:218: warning: assignment discards qualifiers from pointer target type nrpe.c:251: warning: assignment makes pointer from integer without a cast /tmp/ccK17MBg.o: In function `main': /root/nagios/nrpe-2.13/src/nrpe.c:251: undefined reference to `get_dh512' collect2: ld returned 1 exit status make[1]: *** [nrpe] Error 1 make[1]: Leaving directory `/root/nagios/nrpe-2.13/src' *** Compile finished *** If the NRPE daemon and client compiled without any errors, you can continue with the installation or upgrade process.
原因
在/usr/local/目录下装有openssl,导致 配置时调用配置目录 -I/usr/local/openssl/include，而非系统自带
[root@three nrpe-2.13]# vim configure
行6630 去掉 /usr/local/openssl 即可,
如"for dir in $ssl_inc_dir $ssl_dir /usr/local/openssl /usr/local/ssl"
[root@three nrpe-2.13]# ./configure #再次配置
....
[root@three nrpe-2.13]# make all.... *** Compile finished *** #通过
错误7 named (zone test.com/IN: not loaded due to errors.)
原因
$ tail /var/log/messages May 7 10:42:00 one named[27080]: reading built-in trusted keys from file '/usr/local/named/etc/bind.keys' May 7 10:42:00 one named[27080]: using default UDP/IPv4 port range: [1024, 65535] May 7 10:42:00 one named[27080]: using default UDP/IPv6 port range: [1024, 65535] May 7 10:42:00 one named[27080]: sizing zone task pool based on 2 zones May 7 10:42:00 one named[27080]: reloading configuration succeeded May 7 10:42:00 one named[27080]: reloading zones succeeded May 7 10:42:00 one named[27080]: zone test.com/IN: NS 'ns1.test.com' has no address records (A or AAAA) May 7 10:42:00 one named[27080]: zone test.com/IN: not loaded due to errors. May 7 10:42:00 one named[27080]: all zones loaded May 7 10:42:00 one named[27080]: running
解决方法（注意ns1.test.com.的"."）
$TTL 600 @ IN SOA ns1.test.com. root.test.com. ( 2009050401 3600 600 3600000 1800 ) @ IN NS ns1.test.com. ns1 IN A 192.168.57.71 www IN A 192.168.57.71 monitor IN A 192.168.57.70
mysql (Column count of mysql.db is wrong. Expected 22, found 20. The table is probably corrupte)
120511 14:26:49 [ERROR] Column count of mysql.db is wrong. Expected 22, found 20. The table is probably corrupted 120511 14:26:49 [ERROR] mysql.user has no `Event_priv` column at position 29 120511 14:26:49 [ERROR] Event Scheduler: An error occurred when initializing system tables. Disabling the Event Scheduler.
错误8 keepalived ip address associated with VRID not present in received packet
原因
5913 May 16 15:26:04 ha02 Keepalived_vrrp: ip address associated with VRID not present in received packet : 192.168.57.75 5914 May 16 15:26:04 ha02 Keepalived_vrrp: one or more VIP associated with VRID mismatch actual MASTER advert 5915 May 16 15:26:04 ha02 Keepalived_vrrp: bogus VRRP packet received on eth0 !!! 5916 May 16 15:26:04 ha02 Keepalived_vrrp: VRRP_Instance(VI_1) ignoring received advertisment... 5917 May 16 15:26:05 ha02 Keepalived_vrrp: ip address associated with VRID not present in received packet : 192.168.57.75 5918 May 16 15:26:05 ha02 Keepalived_vrrp: one or more VIP associated with VRID mismatch actual MASTER advert 5919 May 16 15:26:05 ha02 Keepalived_vrrp: bogus VRRP packet received on eth0 !!! 5920 May 16 15:26:05 ha02 Keepalived_vrrp: VRRP_Instance(VI_1) ignoring received advertisment..
解决方法
在同一网段内virtual_router_id 值不能相同，如果相同会在messages中收到VRRP错误包 所以需要更改 virual_router_id
错误9 fdisk partition table entries are not in disk order
fdisk /dev/sdb (用你的硬盘位置代替/dev/sdb) 有提示后输入 x 回车， 在命令列表中会有一项 f fix partition order 输入 f 回车 成功会提示 done. 然后输入 p 回车，查看调整后的分区表 最后输入 w 回车，这个命令是将之前的操作写入硬盘 重启之后就会启用新的分区表。
错误10 ubuntu error:unknown filesystem
因为我的电脑是Ubuntu的，开机用的是grub引导，而grub就放在Ubuntu里的/boot/grub下。由于我修复分区顺序，导致grub找不到原先的Ubuntu所在分区，自然就找不到/boot/grub了，因此解决这个问题很简单，只要把grub和/boot/grub对应上就可以了。
2 编辑 /boot/grub/grub.cfg
替换原来分区比如, 旧的是 hd0,msdos8 替换成 hd0,mdos6
3 重装grub
grub-install /dev/sda
错误11 /lib/modules/2.6.32-71.el6.x86_64/build: No such file or directory. Stop.
//如果出现如下错误 make: *** /lib/modules/2.6.32-71.el6.x86_64/build: No such file or directory. Stop. //进去相关的目录看，这个文件是个软链接，显示位红色，说明链接未成功，用一下命令重新链接一次就OK了 ln -s ../../../usr/src/kernels/2.6.32-71.29.1.el6.x86_64/ build
错误12 php
upload_max_filesize = 2M //上传附件大小限制在2M
vim /etc/php.ini upload_max_filesize = 16M
错误13 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
修改 /etc/ssh/ssh_config
vim /etc/ssh/ssh_config
GSSAPIAuthentication no
错误14
nfs:server is not responding,still trying
方法1 ：
我在arm上通过NFS共享文件时出现下面的错误提示
nfs:server is not responding,still trying
原因分析：NFS 的默认传输协议是 UDP，而PC机与嵌入式系统通过UPD交互时就会出现严重的网卡丢包现象。
解决方法：在客户端改用TCP协议，使用下面的命令，
#mount -o tcp 10.10.19.25:/home/export /mnt/local
方法2：
在目标板上通过NFS复制PC机上较大文件到目标板上的时候遇到的问题：
nfs: server *** not responding, still trying
修改方法：
nfs mount时候出现的NFS崩溃，按照以下的方式mount
mount -t nfs -o intr,nolock,rsize=1024,wsize=1024 192.168.1.3/root/somedir /client
