1. 系统调优
[root@sht-sgmhadoopcm-01 ~]# echo "vm.max_map_count=131072" >> /etc/sysctl.conf [root@sht-sgmhadoopcm-01 ~]# echo "vm.swappiness = 1" >> /etc/sysctl.conf [root@sht-sgmhadoopcm-01 ~]# sysctl -p [root@sht-sgmhadoopcm-01 ~]# echo "cassandra soft memlock unlimited" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandra hard memlock unlimited" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrasoft nofile 65536" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrahard nofile 65536" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrasoft nproc 65536" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrahard nproc 65536" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrasoft as unlimited" >> /etc/security/limits.conf [root@sht-sgmhadoopcm-01 ~]# echo "cassandrahard as unlimited" >> /etc/security/limits.conf
2. 安装python2.7.*
[root@sht-sgmhadoopcm-01 ~]# wget https://www.python.org/ftp/python/2.7.15/Python-2.7.15.tgz [root@sht-sgmhadoopcm-01 ~]# tar -zxf Python-2.7.15.tgz [root@sht-sgmhadoopcm-01 ~]# cd Python-2.7.15 [root@sht-sgmhadoopcm-01 Python-2.7.15]# ./configure --prefix=/usr/local/python-2.7.15 [root@sht-sgmhadoopcm-01 Python-2.7.15]# make && make install [root@sht-sgmhadoopcm-01 Python-2.7.15]# /usr/local/python-2.7.15/bin/python -V Python 2.7.15
3. 安装Java1.8.*
[root@sht-sgmhadoopcm-01 ~]# wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u171-b11/512cd62ec5174c3487ac17c61aaa89e8/jdk-8u171-linux-x64.tar.gz [root@sht-sgmhadoopcm-01 ~]# tar -zxf jdk-8u171-linux-x64.tar.gz -C /usr/java [root@sht-sgmhadoopcm-01 ~]# /usr/java/jdk1.8.0_171/bin/java -version java version "1.8.0_171" Java(TM) SE Runtime Environment (build 1.8.0_171-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)
4. 创建cassandra用户和组并设置相关环境变量
[root@sht-sgmhadoopcm-01 ~]# groupadd -r dba -g 501 [root@sht-sgmhadoopcm-01 ~]# useradd -r -u 501 -g dba cassandra -d /home/cassandra [root@sht-sgmhadoopcm-01 ~]# su - cassandra [cassandra@sht-sgmhadoopcm-01 ~]$ vim ~/.bash_profile # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs export CASSANDRA_HOME=/usr/local/cassandra export JAVA_HOME=/usr/java/jdk1.8.0_171 export PYTHON_HOME=/usr/local/python-2.7.15 export PATH=$PYTHON_HOME/bin:$JAVA_HOME/bin:$CASSANDRA_HOME/bin:$CASSANDRA_HOME/tools/bin:$PATH:$HOME/bin:/usr/local/bin
5. 配置cassandra数据库
[root@sht-sgmhadoopcm-01 ~]# wget http://archive.apache.org/dist/cassandra/2.1.20/apache-cassandra-2.1.20-bin.tar.gz [root@sht-sgmhadoopcm-01 ~]# tar -zxf apache-cassandra-2.1.20-bin.tar.gz -C /usr/local/ [root@sht-sgmhadoopcm-01 ~]# cd /usr/local/ [root@sht-sgmhadoopcm-01 local]# ln -s apache-cassandra-2.1.20 cassandra [root@sht-sgmhadoopcm-01 local]# chown -R cassandra.dba apache-cassandra-2.1.20/ [root@sht-sgmhadoopcm-01 local]# echo 'su - cassandra -c "cd /usr/local/cassandra/bin/ && nohup ./cassandra "' >> /etc/rc.local [root@sht-sgmhadoopcm-01 local]# su - cassandra [cassandra@sht-sgmhadoopcm-01 ~]$ mkdir /usr/local/cassandra/{data,commitlog,saved_caches,logs} [cassandra@sht-sgmhadoopcm-01 ~]$ cat -n /usr/local/cassandra/conf/cassandra.yaml ………………… 10 cluster_name: 'MyCluster' 106 data_file_directories: 107 - /usr/local/cassandra/data 112 commitlog_directory: /usr/local/cassandra/commitlog 227 saved_caches_directory: /usr/local/cassandra/saved_caches 273 - seeds: "172.16.101.54" 386 listen_address: 172.16.101.54 401 start_native_transport: true 424 start_rpc: true 444 rpc_address: 0.0.0.0 455 broadcast_rpc_address: 172.16.101.54 ………………… [cassandra@sht-sgmhadoopcm-01 ~]$ cat -n /usr/local/cassandra/conf/cassandra-env.sh ………………… 143 MAX_HEAP_SIZE="4G" 144 HEAP_NEWSIZE="400M" …………………
6. 启动cassandra
[cassandra@sht-sgmhadoopcm-01 ~]$ /usr/local/cassandra/bin/cassandra .................... INFO 10:14:03 No gossip backlog; proceeding .................... [cassandra@sht-sgmhadoopcm-01 ~]$ cat /usr/local/cassandra/logs/system.log ......................... INFO [main] 2018-05-19 18:14:04,195 Server.java:194 - Starting listening for CQL clients on /0.0.0.0:9042... INFO [main] 2018-05-19 18:14:04,489 ThriftServer.java:119 - Binding thrift service to /0.0.0.0:9160 INFO [Thread-2] 2018-05-19 18:14:04,539 ThriftServer.java:136 - Listening for thrift clients...
7. 登录cassandra数据库
[cassandra@sht-sgmhadoopcm-01 ~]$ cqlsh 172.16.101.54 9042 Connected to MyCluster at 172.16.101.54:9042. [cqlsh 5.0.1 | Cassandra 2.1.20 | CQL spec 3.2.1 | Native protocol v3] Use HELP for help. cqlsh> [cassandra@sht-sgmhadoopcm-01 ~]$ cassandra-cli --host 172.16.101.54 --port 9160 Connected to: "MyCluster" on 172.16.101.54/9160 Welcome to Cassandra CLI version 2.1.20 The CLI is deprecated and will be removed in Cassandra 2.2. Consider migrating to cqlsh. CQL is fully backwards compatible with Thrift data; see http://www.datastax.com/dev/blog/thrift-to-cql3 Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. [default@unknown]