To avoid some unexpected system errors, it is better to update yum to the latest. It is not recommended to update the production environment when there is business running
Install GNOME Desktop graphics Desktop Services
yum groupinstall "GNOME Desktop"
yum install tigervnc-server
View system operation mo ...
Posted on Wed, 13 Nov 2019 10:10:48 -0500 by sargenle
This blog introduces the basic operation of firewall in openstack
All ports are open here to add firewall rules due to non production environment
You can use the neutron basic command to view
[root@controller html]# neutron --help | grep fire
firewall-create Create a firewall.
Posted on Mon, 11 Nov 2019 13:27:22 -0500 by rallen102
Labels (space delimited): GreenPlum
In the process of configuring GreenPlum, you need to pay attention to the following points:
Find the installation package
Installation dependency, Gun version needs attention
Detailed installation procedure reference Greenplum installation introduction
I am a computer virtual machine insta ...
Posted on Sun, 10 Nov 2019 14:42:13 -0500 by antisback
The Zabbix environment has been deployed:Zabbix_aget: installed in / etc/zabbix1. Open port 10050
firewall-cmd --zone=public --add-port=10050/tcp --permanent
2. Close setenforce rsetenforce 0
####Scripts for monitoring mysql performance
Posted on Sun, 10 Nov 2019 09:56:09 -0500 by miracle_potential
Step by step
To implement this case, follow the steps below.
Step 1: write a typical Linux gateway firewall script
1) write script file / opt/ipfw-gw.sh
[root@gw1 ~]# vim /opt/ipfw-gw.sh
## 2015.05.20 TsengYia.
#### 1. Define environment variables for easy migration ####
Posted on Thu, 07 Nov 2019 12:28:26 -0500 by cocell
1. Ipvsadm-c (clear ipvs rules)
2. ifconfig eth:1 down (clear VIP of LVS)
II. KeepAlived installation
yum install keepalived
3. Configure the host
1. Copy configuration file
cp keepalived.conf keepalived.bak
2. Edit configuration file
VI kept.conf (related commands: dG,:., $ ...
Posted on Sat, 02 Nov 2019 01:25:25 -0400 by unreel
Note: under Linux, you can see the details of each cpu in / proc/cpuinfo. But for a dual core cpu, you will see two CPUs in cpuinfo. It is often mistaken for two single core CPUs.
Original address: http://www.hpboys.com/659.html
I. linux CPU size
[root@idc ~]# cat /proc/cpuinfo |grep "model name" && cat /proc/cpuinfo |grep "physical i ...
Posted on Fri, 01 Nov 2019 22:53:50 -0400 by manmadareddy
019-07-01 16:45:24,933 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from 18.104.22.168:63048 Call#3 Retry#0
java.io.IOException: File /a1.txt could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and 1 node(s) are excl ...
Posted on Fri, 01 Nov 2019 13:23:10 -0400 by rmbarnes82
This blog post is based on the Docker Swarm cluster environment and extends the functions of Docker Swarm.
Blog Outline:I. docker swarm network managementII. service management and version update of Swarm
The environment of this blog is still based on the environment set up in the previous blog. For details, please refer to the blo ...
Posted on Wed, 30 Oct 2019 10:13:27 -0400 by pete_bisby
Special topics: Linux application service configuration
Installation and configuration of various Linux Software
For more information, please click My blog Check, welcome to visit.
MySQL master slave synchronization configuration
Master slave configuration
Master-slave synchronization enables data ...
Posted on Sat, 26 Oct 2019 11:56:59 -0400 by rocket