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Documents Product Categories Apache Cassandra on Alma Linux 8 with Support by cloudimg

Apache Cassandra on Alma Linux 8 with Support by cloudimg

Jun 28, 2024
Alma Linux 8 – Apache Cassandra Version: 1.0.0 Created by: cloudimg Table of Contents 1.) Overview......................................................................................................................1 2.) Access & Security..........................................................................................................2 3.) System Requirements....................................................................................................2 4.) Connecting to the Instance...........................................................................................2 5.) On Startup....................................................................................................................2 6.) Filesystem Configuration..............................................................................................3 7.) Server Components......................................................................................................3 8.) Scripts and Log Files.....................................................................................................3 9.) Using System Components...........................................................................................4 1.) Overview This document is provided as a user guide for the Alma Linux 8 – Apache Cassandra product offering on the Alibaba Cloud Marketplace. Please reach out to support@cloudimg.co.uk if any issues are encountered following this user guide for the chosen product offering.2.)Access & Security Please update the security group of the target instance to allow the below ports and protocols for access and connectivity. Protocol Type Port Description SSH TCP 22 SSH connectivity Custom TCP TCP 7199 JMX monitoring port Custom TCP TCP 7000 Internode communication Custom TCP TCP 9042 CQL native transport port 3.)System Requirements The minimum system requirements for the chosen product offering can be found below Minimum CPU Minimum RAM Required Disk Space 1 1 GB 20 GB 4.) Connecting to the Instance Once launched in the ECS Console, please connect to the instance via an SSH client using the root user with the key pair associated at launch. 5.) On Startup An OS package update script has been configured to run on boot to ensure the image is fully up to date at first use. You can disable this feature by removing the script from /stage/scripts/ and deleting the entry in crontab for the root user. Disable the OS update script from running on reboot rm -f /stage/scripts/initial_boot_update.sh crontab -e #DELETE THE BELOW LINE. SAVE AND EXIT THE FILE. @reboot /stage/scripts/initial_boot_update.sh6.) Filesystem Configuration Please see below for a screenshot of the server disk configuration and specific mount point mappings for software locations. Filesystem Size Used Avail Use% Mounted on devtmpfs 485M 0 485M 0% /dev tmpfs 495M 0 495M 0% /dev/shm tmpfs 495M 6.7M 488M 2% /run tmpfs 495M 0 495M 0% /sys/fs/cgroup /dev/xvda2 38G 2.6G 33G 8% / /dev/xvda1 2.0G 93M 1.7G 6% /boot tmpfs 99M 0 99M 0% /run/user/1002 /dev/xvdf 9.8G 37M 9.2G 1% /var/lib/cassandra Mount Point Description /boot Operating System Kernel files /var/lib/cassandra Apache Cassandra data directory 7.) Server Components Please see below for a list of installed server components and their respective installation paths. The below versions are subject to change on initial boot based on the initial_boot_update.sh script finding new versions of the software in the systems package repositories. Component Version Software Home Aliyun CLI 3 /usr/local/bin/aliyun Apache Cassandra 4.0.4 /etc/cassandra Java 1.8.0 /bin/java 8.) Scripts and Log FilesThe below table provides a breakdown of any scripts & log files created to enhance the useability of the chosen offering. Script/Log Path Description Initial_boot_update.sh /stage/scripts Update the Operating System with the latest updates available. Initial_boot_update.log /stage/scripts Provides output for initial_boot_update.sh 9.) Using System Components Instructions can be found below for using each component of the server build mentioned in section 7 of this user guide document. Aliyun CLI Run – Once logged into the server, you may check the options available for the use of Aliyun CLI via the below command. aliyun –-help Apache Cassandra The Apache Cassandra service has been configured to start on boot, please use the below commands to start, stop and check the status of the service. #Check the Cassandra Server is running systemctl status cassandra #Stop the Cassandra Server systemctl stop cassandra #Start the Cassandra Server systemctl start cassandra You will be to run the below command to check the Cassandra service is running.nodetool status cqlsh EXAMPLE OUTPUT [root@ip-172-31-94-200 cassandra]# nodetool status Datacenter: datacenter1 ======================= Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns (effective) Host ID Rack UN 127.0.0.1 69.05 KiB 16 100.0% bb9d3091-c1e0-4ed2-92b4-2897099aba7d rack1 [root@ip-172-31-94-200 cassandra]# cqlsh Connected to Test Cluster at 127.0.0.1:9042 [cqlsh 6.0.0 | Cassandra 4.0.4 | CQL spec 3.4.5 | Native protocol v5] Use HELP for help. cqlsh>
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Apache Cassandra on Alma Linux 8 with Support by cloudimg

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