自动化运维工具-pdsh工具安装配置及简单使用讲解

1、先决条件：
安装pssh工具的主机针对远程主机需要配置免秘钥认证：
ssh-keygen -t rsa
ssh-copy-id [remotehost]

2、下载pssh工具安装介质：
https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/pdsh/pdsh-2.29.tar.bz2

3、安装pdsh：
tar -jxvf pdsh-2.29.tar.bz2
cd pdsh-2.29
./configure --with-ssh --with-rsh --with-mrsh --with-mqshell \
--with-dshgroups --with-machines=/etc/pdsh/machines

make && make install

安装成功后OS会多出pdsh和pdcp两个命令：

3、pdsh工具使用详解：

查看帮助：
pdsh --help
pdsh: invalid option -- '-'
Usage: pdsh [-options] command ...
-S                return largest of remote command return values
-h                output usage menu and quit
-V                output version information and quit
-q                list the option settings and quit
-b                disable ^C status feature (batch mode)
-d                enable extra debug information from ^C status
-l user           execute remote commands as user
-t seconds        set connect timeout (default is 10 sec)
-u seconds        set command timeout (no default)
-f n              use fanout of n nodes
-w host,host,...  set target node list on command line
-x host,host,...  set node exclusion list on command line
-R name           set rcmd module to name
-M name,...       select one or more misc modules to initialize first
-N                disable hostname: labels on output lines
-L                list info on all loaded modules and exit
-g groupname      target hosts in dsh group "groupname"
-X groupname      exclude hosts in dsh group "groupname"
-a                target all nodes
available rcmd modules: ssh,rsh,exec (default: rsh)

1）pdsh使用案例：

pdsh -w ssh:192.168.0.18[1-4] "uname -n"
pdsh -w ssh:192.168.0.18[1-4] -x db01 "uptime"
pdsh -w ssh:192.168.0.18[1-4],/[234]$/ "uptime"

$ cat /etc/pdsh/machines
db01
db02
db03
db04
$ pdsh -R ssh -a "uptime"

cat /etc/dsh/group/bdgroup
db01
db02
db03
db04
pdsh -R ssh -g bdgroup "uptime"

pdsh -R ssh -a -X bdgroup uptime

pdsh -R ssh -a "sudo touch /mnt/aaa"

pdsh交互式命令窗口：
$ pdsh -R ssh -w db02
pdsh> ls -l
db02: total 139040
db02: drwxr-xr-x 8 hadoop hadoop       233 Jul 26  2014 jdk1.7.0_67
db02: -rwxrwxr-x 1 hadoop hadoop 142376665 Oct  2 07:51 jdk-7u67-linux-x64.tar.gz
pdsh> pwd
db02: /home/hadoop
pdsh> rm -rf jdk1.7.0_67
pdsh> ls -l
db02: total 139040
db02: -rwxrwxr-x 1 hadoop hadoop 142376665 Oct  2 07:51 jdk-7u67-linux-x64.tar.gz
pdsh> sudo tar -zxf jdk-7u67-linux-x64.tar.gz -C /mnt/
pdsh> ls -l /mnt
db02: total 9424
db02: drwxr-xr-x  8     10    143     233 Jul 26  2014 jdk1.7.0_67
pdsh> quit

2）pdcp使用案例：

使用pdcp命令要求本地主机和远程主机必须安装pdsh工具，这也是唯一一点麻烦的地方。

pdcp -R ssh -w db02 /mnt/pssh-2.3.1.tar.gz /home/hadoop/