5 min read
The MapR Installer web interface makes the installation of a MapR cluster easy. MapR Installer is used to install, upgrade, and apply EBF patches on a MapR cluster. MapR Installer has several phases, and users may face issues in any of these phases, depending on the level of complexity in their setup and optional configurations.
The MapR Installer Troubleshooting Hub is a compilation of technical issues most commonly faced by customers, along with steps to resolve these issues. This guide has captured different phases of installation/upgrade. It is divided into the sections below:
|KA Number||KA Title||KA Summary|
|Installing MapR Installer|
|000003169||MapR Installer script mapr-setup.sh does not update properties.json after rerun||This article shares information on metadata change impact on properties.json file during re-execution of mapr-setup.sh script with different values.|
|000003167||MapR installation mapr-setup.sh script fails on Ubuntu when Oracle Java 8 is already installed||This article provides a workaround when new MapR installation on Ubuntu fails with mapr-setup.sh script, where it cannot detect already installed Oracle Java 8 on the Ubuntu host.|
|000003145||mapr-setup.sh fails to import repo key when --repo option is used||This article provides information on a known error when mapr-setup.sh script fails to fetch the repo key on a host that does not have internet connectivity.|
|Rebuilding MapR Installer database|
|000003290||Recreate MapR Installer DB using Stanza features||This article provides the steps required to recreate the MapR Installer database on an existing cluster.|
|000003250||mapr-qs incorrectly replaces mapr-drill in probed YAML file with installer v1.7||This article provides details on an error related to the mapr-qs package, seen during the probe phase.|
|000003129||MapR installer probe command fails with "File /usr/lib64/python2-6/subprocess.py line 1238 in _execute_child\r\n raise child_exception\r\nOSError: [Errno 2] No such file or directory"||This article provides a workaround to the error "No such file or directory" seen during verification or prerequisite check phase.|
|000003215||MapR stanza probe may fail with mapr-installer v1.7 when mapr-drill 1.10 is present on cluster nodes||This article provides a workaround when stanza probe fails, when mapr-drill 1.10 package already exists on the cluster node.|
|Common errors when verifying/installing/upgrading/extending cluster|
|000003318||With the MapR Installer's "extend cluster" option, services layouts are not shown correctly||This article helps to recover service layout groups data when extending cluster.|
|000003129||MapR Installer probe command fails with "File /usr/lib64/python2-6/subprocess.py line 1238 in _execute_child\r\n raise child_exception\r\nOSError: [Errno 2] No such file or directory"||This article provides a workaround to the error "No such file or directory" seen during verification phase.|
|000003165||MapR stanza installation fails when advanced YAML file is used with groups||This article shares information on installation failure related to stanza when groups are used in an advanced YAML file.|
|000003218||MapR Installer stalls and does not proceed during upgrade||This article shares information on a known issue when installation does not proceed due to a /mapr mount problem.|
|000002949||Error: Package mapr-libhbase version 184.108.40.206704031229 not supported by the current version of installer||This article helps with information on a known limitation of MapR Installer, when mapr-libhbase-1.1.8 exists in cluster nodes.|
|Other common issues|
|000002764||How do I import custom SSL certificates into the MapR Installer?||This article helps with steps to import custom certificates for MapR Installer UI.|
|000003204||How to upgrade a non-secure MapR cluster from v5.2.1 with MEP 3.0.2 to v6.0 with MEP 4.0 using the MapR Installer||This article helps with upgrade steps from MapR v5.x to MapR v6.x.|
To the committed MapR Support team, Knowledge Articles are a byproduct of solving real customer issues. Given the complexity of technical challenges in this area and given that users have a wide latitude of configurability in their setups, the focus of these articles is to enhance user education on self-solving technical issues. Note that the guidance on what log files are applicable for what issue-types is of high value here. This attempt is to cover the most common issues; it is not an exhaustive compilation. These tips and tricks have been verified to be helpful for several customer cases before being published to the Support Portal.
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