centos安装netcat

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最新推荐文章于 2024-08-02 16:41:28 发布

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本文详细记录了在CentOS 6.6系统中安装Netcat的过程，包括解决依赖问题和最终成功安装Netcat，以实现对Zookeeper集群状态的监控。

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CentOS下安装netcat

使用zookeeper过程中，需要监控集群状态。在使用四字命令时（echo conf | nc localhost 2181），报出如下错误：-bash: netcat: command not found。
我的系统是CentOS 6.6, 64位系统，默认没有安装netcat，下面时安装过程中遇到的一些问题。(下面都是使用root用户)

下载netcat安装包

wget http://sourceforge.net/projects/netcat/files/netcat/0.7.1/netcat-0.7.1-1.i386.rpm
执行安装rpm -ihv netcat-0.7.1-1.i386.rpm


rpm -ihv netcat-0.7.1-1.i386.rpm
warning: netcat-0.7.1-1.i386.rpm: Header V3 DSA/SHA1 Signature, key ID b2d79fc1: NOKEY
error: Failed dependencies:
        libc.so.6 is needed by netcat-0.7.1-1.i386
        libc.so.6(GLIBC_2.0) is needed by netcat-0.7.1-1.i386
        libc.so.6(GLIBC_2.1) is needed by netcat-0.7.1-1.i386
        libc.so.6(GLIBC_2.3) is needed by netcat-0.7.1-1.i386

解决依赖包问题

yum list glibc*


    Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Installed Packages
glibc.x86_64           2.12-1.149.el6        @anaconda-CentOS-201410241409.x86_64/6.6
glibc-common.x86_64    2.12-1.149.el6        @anaconda-CentOS-201410241409.x86_64/6.6
glibc-devel.x86_64     2.12-1.149.el6        @anaconda-CentOS-201410241409.x86_64/6.6
glibc-headers.x86_64   2.12-1.149.el6        @anaconda-CentOS-201410241409.x86_64/6.6
Available Packages
glibc.i686             2.12-1.149.el6_6.9    updates                                 
glibc.x86_64           2.12-1.149.el6_6.9    updates                                 
glibc-common.x86_64    2.12-1.149.el6_6.9    updates                                 
glibc-devel.i686       2.12-1.149.el6_6.9    updates                                 
glibc-devel.x86_64     2.12-1.149.el6_6.9    updates                                 
glibc-headers.x86_64   2.12-1.149.el6_6.9    updates                                 
glibc-static.i686      2.12-1.149.el6_6.9    updates                                 
glibc-static.x86_64    2.12-1.149.el6_6.9    updates                                 
glibc-utils.x86_64     2.12-1.149.el6_6.9    updates

安装命令：
yum install glibc.i686


rpm -ihv netcat-0.7.1-1.i386.rpm
warning: netcat-0.7.1-1.i386.rpm: Header V3 DSA/SHA1 Signature, key ID b2d79fc1: NOKEY
Preparing...                ########################################### [100%]
   1:netcat                 ########################################### [100%]

安装netcat包

rpm -ihv netcat-0.7.1-1.i386.rpm


rpm -ihv netcat-0.7.1-1.i386.rpm
warning: netcat-0.7.1-1.i386.rpm: Header V3 DSA/SHA1 Signature, key ID b2d79fc1: NOKEY
Preparing...                ########################################### [100%]
   1:netcat                 ########################################### [100%]

再次测试zookeeper的四字命令，终于成功啦。


echo conf | nc localhost 2181
clientPort=2181
dataDir=/data/zk/data1/version-2
dataLogDir=/data/zk/log1/version-2
tickTime=2000
maxClientCnxns=500
minSessionTimeout=4000
maxSessionTimeout=40000
serverId=1
initLimit=10
syncLimit=5
electionAlg=3
electionPort=3891
quorumPort=2891
peerType=0