postgresql ha

/memcachedchown-r memcached:/var/run/memcached vi/etc/init.d/memcached #添加下面行PORT =11211 user=memcached #ChangeMAXCONN =1024 cachesize=128 #根据本机内存修改OPTIONS = "" I p= ' ifconfig |grep ' inet addr ' |awk-f ': ' "inet addr" {print $} ' |sed-n 1p|awk ' {print $ ' #添加, get Ipchown $USER/usr/loc al/bin/memcached #找到下面一行/usr/local/bin/memcached–d-l $IP –p $PORT –u $USER –m $CACHESIZE –c $MAXCONN –P/VAR/RUN/MEMCAC Hed/memcached.pid $OPTIONS 5, start Memcache Chkconfig--add memcachedchkconfig memcached o

First, Redis-sentinel ha framework to build For a detailed setup process, please refer to another article with the following address: Click to open the link Second, the introduction of a dependent jar package Third, spring configuration file Iv. redis.properties configuration Files redis.maxtotal=100 redis.sentinel.host1=127.0.0.1 redis.sentinel.host2=127.0.0.1 redis.sentinel.host3=127.0.0.1 redis.sentinel.port1=26379 redis.sentinel.port2=26479 r

To deploy the logical schema: HDFS HA Deployment Physical architecture Attention: Journalnode uses very few resources, even in the actual production environment, but also Journalnode and Datanode deployed on the same machine; in the production environment, it is recommended that the main standby namenode each individual machine. Yarn Deployment Schema: Personal Experiment Environment deployment diagram： Ubuntu12 32bit Apache Hadoop 2.2.0 jdk

If there is a place to look at the mask, take a look at the HDFs ha this articleThe official scheme is as follows Configuration target: Node1 Node2 Node3:3 Station ZookeeperNode1 Node2:2 sets of ResourceManager First configure Node1, configure Etc/hadoop/yarn-site.xml: Configuration etc/hadoop/mapred-site.xml: Copy the Node1 2 configuration files (SCP command) to 4 other machines Then start the yarn:start-yarn.sh on the Node1 (at the same time st

Label:Ha, which only monitors and manages the database at the operating system level, is generally used only for single-instance databases. The advantages are convenient management, convenient application development (developer convenience), and less project input. The disadvantage is that it has all the disadvantages of single-instance database: Poor fault tolerance, poor endurance, small user capacity and so on.RAC, the database itself provides a single database multi-instance application meth

'%semi% ';Mysql> SHOW GLOBAL STATUS like '%semi% ';MariaDB [(None)]> show variables like '%semi% ';+------------------------------------+-------+| variable_name | Value |+------------------------------------+-------+| rpl_semi_sync_master_enabled | On | Enable the Master node for version Synchronization| Rpl_semi_sync_master_timeout | 10000 || Rpl_semi_sync_master_trace_level | 32 | Trace Level 32| Rpl_semi_sync_master_wait_no_slave | On | Allows master to wait for the receipt signal of slave a

Manual PostgreSQL database initialization tutorial in windows, initialize postgresql Environment: win7 64 sp1PG: 9.3.5 1. Create the postgres user, and the password is also postgres: net user postgres postgres /add 2. Create a data directory under the root directory of the database: C:\Program Files\PostgreSQL\9.3>md data 3. Remove the administrator permission on

Distributed configuration Hadoop-2.2.0 in Ubuntu and centos introduces the most basic configuration of hadoop 2.2.0. Hadoop 2.2.0 provides the HA function. This article introduces the configuration of hadoop 2.2.0ha based on the previous article. Note: The following two namenode machines are named namenode1 and namenode2. among them, namenode1 is active node and namenode2 is standby namenode. There are three journalnode machines (at least three): jour

I. I have been busy with database platform testing recently. I'm so excited that it will be available after the National Day, but I still have some concerns. All the functions depend on this platform, including basic database operations, permission management, migration, monitoring, alarms, etc. If the platform crashes, the sky will collapse, so I made all the components of the platform ha, this article record the

contention during cluster classification Coroync There are a variety of available information layer + CRM combination solutions on rhel6 1. CMAN + rgmanger 2. CMAN + pacemaker 3. heatbeat V3 + pacemaker 4. corosync + pacemaker During the installation of corosync, since the RPM will depend on some Ra of heartbeat, heartbeat will be used in the fashion, but heartbeat may not be started. However, heartbeat does not depend on corosync. Edit the

RedHat HA normal disk replacement LVM RedHatHA General disk transformation LVM logical volume test report Rhel 5.7 ha lvm test: Rhel 5.7 ha lvm test: 1 Test frame diagram: 1 Cluster software installation 2 Configure cluster lvm2 Add Resource 3 Cluster test 10 Test result 12 Test frame diagram: Ha1: ha2 Hostname = ha1.example.com hostname = ha2.example.com Eth1:

Introduction to and application of Oracle Advanced Replication Technology: Oracle Advanced Replication Technology is the first HA Disaster Tolerance solution proposed by Oracle. It originated from the Oracle8i system, you can still find the advanced copy in the official documents of the 11G website. Introduction to and application of Oracle Advanced Replication Technology: Oracle Advanced Replication Technology is the first

[Copyright: The author of this article is original, reproduced please indicate the source]Article Source: http://www.cnblogs.com/sdksdk0/p/5585355.htmlJuppé Id:sdksdk0--------------------------------------------------In one of my previous blogs, I've shared the basic configuration of Hadoop, address: http://blog.csdn.net/sdksdk0/article/details/51498775, but that's used with beginners to learn and test, Today with the share of this more complex than the last one, mainly add zookeeper and two Nam

Codis Codis-ha after the master-slave switch server marked as offline, mainly based on data security considerations, this time requires manual operation to restore master-slave relationsAfter the offline node executes the Add to group command, the offline host is re-established with the same group as the master host.[Email protected]_168_171_137 sample]$. /bin/codis-config-c config.ini-l./log/cconfig.log server add 4 192.168.171.140:6381 slave{"MSG":

Juniper VSRX Firewall ha configurationTopological structure of experimental network650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/54/2B/wKiom1R6wn6S3GsPAACvyJKrKGQ317.jpg "/>Experimental objectives Complete the failover configuration of the SRX firewall Connectivity of test equipment Experiment Configuration steps: The GE-0/0/1 and GE-0/0/2 ports of the two VSRX firewalls are interconnected using a network cable or us

HA (hight availability) is a function provided by the esxi server cluster. Its main purpose is to run the virtual machine on the physical host, virtual machine operating system, and applications in the virtual machine.ProgramWhen a fault occurs, the VM can be restarted quickly. External services are not interrupted and data is not lost. Fault Level: 1. esxi host faults. Ii. Virtual Machine operating system faults. 3. Application faults. How to handl

HA High AvailabilityDuring the HA experiment, the following ERROR occurs when heartbeat is started: ERROR: Client child command [/usr/lib/heartbeat/ipfail] is not executable error: Heartbeat not started: configuration ERROR. ERROR: Configuration error, heartbeat not started. because Linux is 64-bit, ha. in the cf configuration file, the/usr/lib/heartbeat/ipfail s

After you build your fabric, you can create HA group, Shard Group, Ha+shard group, and so on, based on it. Here to explain how to quickly build the HA environment. Fabric 192.168.2.234:33060 Master 192.168.2.234:33061 Slave1 192.168.2.234:33062 Slave2 192.168.2.234:33063 1. Build Fabric En

Fix an issue where the hive path is incorrect after namenode configuration of HA After CDH5.7 is configured with Namenode ha, hive has no normal query data, but other components HDFs, HBase, and Spark are normal. The following exception occurred in the hive query: Failed:semanticexception unable to determine if Hdfs://bdc240.hexun.com:8020/user/hive/warehouse/test1 is encrypted: Java.lang.IllegalArgumentE

So far, we've configured the HA for Hadoop, so let's go through the page to see the Hadoop file system. 1. Analyze the status of active Namenode and standby namenode for client services. We can clearly see the directory structure of the Hadoop file system: Above all we are accessing Hadoop through active namenode, so if we can access Hadoop through standby namenode. Next we see that through standby namenode is inaccessible to Hadoop's file syst