Cassandra#

Just some free format stuff for a small studying / experiment with NoSQL stuff.

Resources#

Install/config#

lxc#

  • /etc/default/lxc => change subnet from 10.0.3 to 10.0.4 (10.0.3 is already in use somewhere else)
  • add static route in wireless router (10.0.4.0/8 => via 10.0.0.164)
  • adjust /etc/network/interfaces of container to: 
auto eth0
#iface eth0 inet dhcp
iface eth0 inet static
        address 10.0.4.10
        netmask 255.255.255.0
        network 10.0.4.0
        broadcast 10.0.4.255
        gateway 10.0.4.1
        post-up route add default gw 10.0.4.1 dev eth0
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 213.197.28.3 213.197.30.28
        dns-search computerhok.nl
  • lxc-host ubuntu1 => 10.0.4.10

cassandra#

  • useradd cssndra && mkdir /home/cssndra && chown -R cssndra /home/cssndra + change /etc/passwd => sh => bash
  • wget 'http://mirrors.supportex.net/apache/cassandra/1.2.4/apache-cassandra-1.2.4-bin.tar.gz'
  • apt-get install openjdk-7-jdk
  • sudo mkdir /opt/apache-cassandra-1.2.4 && sudo chown cssndra /opt/apache-cassandra-1.2.4 && sudo ln -s /opt/apache-cassandra-1.2.4 /opt/cassandra
  • cssndra@ubuntu1:~$ cd /opt && tar -xf ~/apache-cassandra-1.2.4-bin.tar
  • ls -l 
cssndra@ubuntu1:/opt/cassandra$ ls -l
total 248
-rw-r--r-- 1 cssndra cssndra 152928 Apr  8 19:21 CHANGES.txt
-rw-r--r-- 1 cssndra cssndra  11609 Apr  8 19:21 LICENSE.txt
-rw-r--r-- 1 cssndra cssndra  47580 Apr  8 19:21 NEWS.txt
-rw-r--r-- 1 cssndra cssndra   1820 Apr  8 19:21 NOTICE.txt
-rw-r--r-- 1 cssndra cssndra   3569 Apr  8 19:21 README.txt
drwxr-xr-x 2 cssndra cssndra   4096 May 15 21:43 bin
drwxr-xr-x 2 cssndra cssndra   4096 May 15 21:43 conf
drwxr-xr-x 2 cssndra cssndra   4096 May 15 21:43 interface
drwxr-xr-x 4 cssndra cssndra   4096 May 15 21:43 javadoc
drwxr-xr-x 3 cssndra cssndra   4096 May 15 21:43 lib
drwxr-xr-x 3 cssndra cssndra   4096 May 15 21:43 pylib
drwxr-xr-x 4 cssndra cssndra   4096 Apr  8 19:21 tools
  • sudo mkdir -p /var/lib/cassandra/data /var/lib/cassandra/commitlog && sudo chown -R cssndra /var/lib/cassandra
  • sudo mkdir /var/log/cassandra/ && sudo chown -R cssndra /var/log/cassandra
  • limit the heap size usage by editing conf/cassandra-env.sh : MAX_HEAP_SIZE="512M" HEAP_NEWSIZE="100M"
  • ==> now first clone the VM : lxc-clone -o ubuntu1 -n ubuntu2
  • start the thing with : ./bin/cassandra -f
  • add keyspace:
cssndra@ubuntu1:/opt/cassandra$ ./bin/cassandra-cli Connected to: "Test Cluster" on 127.0.0.1/9160 Welcome to Cassandra CLI version 1.2.4 Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. [default@unknown] create keyspace DEMO with placement_strategy = 'org.apache.cassandra.locator.SimpleStrategy' and strategy_options = {replication_factor:1}; f243abc2-57dc-32b4-9390-beac4e988c5b [default@unknown] use DEMO; Authenticated to keyspace: DEMO [default@DEMO] create column family Users with key_validation_class = 'UTF8Type' and comparator = 'UTF8Type' and default_validation_class = 'UTF8Type'; bb07d315-a824-3bbb-9b48-d759288e57b4 [default@DEMO] set Users[1234][name] = scott; Value inserted. Elapsed time: 63 msec(s). [default@DEMO] set Users[1234][password] = tiger; Value inserted. Elapsed time: 3.96 msec(s). [default@DEMO] get Users[1234]; => (column=name, value=scott, timestamp=1368679313136000) => (column=password, value=tiger, timestamp=1368679322745000) Returned 2 results. Elapsed time: 58 msec(s). [default@DEMO]
This particular version was published on 23-Apr-2022 17:05 by Harry Metske.Top