HPC cluster public network open security reinforcement and resource display, hpc cluster open reinforcement1. Force password change upon Logon
[Root @ node24 ~] # Cat/etc/passwd | tail-31 | awk-F ":" '{print $1}'> user
[Root @ node24 ~] # For I in 'cat user'; do chage-d 0 $ I; done
2. Set Password Complexity
[Root @ node24 ~] # Cat/etc/pam. d/system-auth
# % PAM-1.0
# This file is auto-generated.
# User cha
Select the "install IBM httpserver" option and click "Installation Wizard", as shown in the following figure:
Installation tips: click "Next" step by step, and pay attention to several details, as shown below:
(1) The product installation path is consistent with the previous was software installation path. For details, refer:
(2) set the Windows service definition, select "Log on with a local system account", and set the password. This article is set to admin, for example:
(3) set the user
Redis3.0 cluster CRC16 algorithm PHP client Implementation method (PHP obtains the Redis partition slot of Redis data in the redis3.0 cluster and obtains the Redis server address of the partition based on the partition slot)
console will still error, but this time only two error messages, Maybe we configured the information in Eureka Server These two error messages are not valid until the registration request has been initiated to the default registryTip 02: The effect of starting Eureka server after Eureka Server is turned off to another registry or a feature that is registered aloneWorkaround 02: Register to another registry (because there is no other registry now, so this post registers it with itself), add the
Problems in a website Cluster Environment and website Cluster Environment
I deploy a mobile application website in a production environment using nginx to load three servers.
In the last two weeks, the product manager repeatedly reported the following error when some customer service personnel visited one of the "Order Management" functions:
Because there has been no online connection in the last two w
(1) confirm the two-node time synchronization
Make sure that the time error between nodes is controlled within 5 minutes. Otherwise, the addition of nodes will not be completed.(2) run the Add node command on node 1.
Host Name input: DM Host Name
Node 1: (To the ikerv01 path)
Command: addNodeWIN-PLDC49NNSAA 8879
(3) node 2: Execute the Add node command
Host Name input: DM server host name
Node 2 (to the ikerv01 path)
The command is addnodewin-pldc49nnsaa 8879.
(4) Restart DM
To dmgr path:
Open "Cluster Manager" on any node and right-click "resource". In the pop-up menu, select "Configure application", for example:
Select "Configure application" and the Wizard Page appears, such:
Click "Next" and select "Create a new virtual server" as the virtual server option appears. For example:
If the "Resource Group" option appears, select "create Resource Group", for example:
Click "Next". The resource group naming page is displayed.
Note: "pointing track" is "Click order", which is the effect after clicking
Environment
Project point
Metrics
Was version
7.0
Operating System
Windows 2008
Number of system digits
64bit
Memory
2G
Was absolute path
D: \ IBM \ WebSphere \ appserver
Step 1: Prepare the file
File description:
Was Nd: was7.0 Software
IHS and update installer and Plugin: IHS (ibm http server) Software
7.0.0.23-WS-UPDI-WinAMD64: Was patch upgr
This article is consideredPrevious Articlethe follow-up,Java Web application, it is unavoidable to useSession, in a clustered environmentApacheWill behttpRequest Intelligent Forwarding to one of theJBoss Server. Suppose there are two ofJBoss Server:Server A,Server B,Sessionvalue inServer Aon. A user accesses a dependentSessionThe first time you access the page, theServer A, which can be properly takenSessionvalue, refresh it, if this is forwarded to theServer B,SessionIf the value is not taken,
Configuring HTTP+MYSQL+NFS high-availability clusters based on the Crm+hb_gui interface Configuring Ipvs high-availability clusters based on the crm+hb_gui+ldirectored interface This article is from the "Ccschan" blog, make sure to keep this source http://ccschan.blog.51cto.com/11854461/1925394Configuration of the Linux High Availability cluster Scheme heartbeat v2 based on Crm+hb_gui interface, configuring HTTP+MSYQL+NFS high Availabili
Configuring Ipvs high-availability clusters based on the crm+hb_gui+ldirectored interface This article is from the "Ccschan" blog, make sure to keep this source http://ccschan.blog.51cto.com/11854461/1925395Configuration of the Linux High Availability cluster Scheme heartbeat v2 based on Crm+hb_gui interface, configuring Ipvs High Availability Cluster
total of 3 workers.The above three-point configuration must be synchronized on all nodesFour, configure SSH:The machine running the start-all.sh script must have access to all the worker nodes, so either configure the login password for each node in the environment variable, or configure the SSH key to login, SSH is more convenient. Generate the key on this node,ssh-keygen-t RSA,Then copy the key to the Authorized_keys of all the worker nodes, note that since I also set this machine as a worker
Tags: mysql cluster haproxyFirst, prepare1. Prepare the serverBuild a MySQL cluster system with 2 nodes and build haproxy+mysql cluster (MySQL cluster) system using 6 servers
node Configuration Instructions
Node
The corresponding IP and port
Haproxy Load Balancer (1) CentOS 6.3
problems that may occur in a clustered environment
In the previous blog we introduced how to add the quartz timing scheduling engine from scratch in your project, which is a quartz and spring integration process, it is easy to implement, but we are now in the enterprise project is usually deployed in the cluster environment, In this way we have the timing of scheduling problems, because our scheduled tasks are loaded in memory, each
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Note:
Because the deployment is based on a real deployment environment, sensitive names are used to smear the image with a brush, and no company secrets are involved. Only the technical deployment procedure is shared. This may affect the reading performance. Sorry.
Audience: It is recommended that you have read the WAS deployment basics.(1) install the ear package
Add the
HA high-availability cluster and HA Available ClusterPrepare two machines:Master: 192.168.254.140Slave: 192.168.254.141vim/etc/hosts master, slave: 192.168.254.140 master192.168.254.141 slave1. Master and master installation:Wget www.lishiming.net/data/attachment/forum/epel-release-6-8_64.noarch.rpmRpm-ivh epel-release-6-8_64.noarch.rpmYum install-y libnetyum install-y heartbeat2. Edit the three configuration files of HA on the master.Cd/usr/share/doc
broadcast $ VIP netmask000000000000255up# Configure the vip address at lo: 0 and set the broadcast address and subnet mask. Using 32 bits ensures that the vip address cannot communicate with other addresses./Sbin/route add-host $ VIP dev lo: 0 # add route;;Stop) # recover to the system's initial arp parameter during stop# Stop LVS-DR real server loopback device (s )./Sbin/ifconfig lo: 0 downEcho0>/proc/sys/net/ipv4/conf/lo/arp_ignoreEcho0>/proc/sys/net/ipv4/conf/lo/arp_announceEcho0>/proc/sys/n
Kafka Cluster management, state saving is realized through zookeeper, so we should build zookeeper cluster first
Zookeeper Cluster setup
First, the SOFTWARE environment:
The zookeeper cluster requires more than half of the node to survive to be externally serviced, so the number of servers should be 2*n+1, where 3 nod
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