Had a LibreNMS instance crash, or the VM crashed, not bootable anymore.\u00a0 Was able to boot it up on a CentOS iso with rescue mode, which gave me access to the files.\u00a0 So the idea is to manually copy off the LibreNMS files and LibreNMS database and import them to a new LibreNMS instance<\/p>\n
Issues<\/p>\n
Steps<\/strong><\/p>\n There can be a couple of ways to gain access to a crashed XenServer VM.\u00a0 One of the easiest ways is to boot up in recovery mode and go through the installers rescue mode.\u00a0 Guide to boot up XenServer VM in recovery mode here<\/a>.<\/p>\n The installer rescue mode should detect the OS and mount everything.\u00a0 If not you should be able to mount the root partition manually.<\/p>\n Once booted up, you’ll need to enable network access if your going to use sftp or scp to copy files.\u00a0 There are a few different ways to do this<\/p>\n 3.Copy LibreNMS Mysql Database Backup the LibreNMS MySQL database directory<\/p>\n Use scp or sftp to copy it to the new LibreNMS instance<\/p>\n Now on the new LibreNMS instance we need to run the following few commands<\/p>\n 4. Copy LibreNMS directory <\/strong><\/p>\n Backup the LibreNMS directory<\/p>\n Use scp or sftp to copy it to the new LibreNMS instance<\/p>\n Now on the new LibreNMS instance we need to run the following few commands<\/p>\n 5. Clean up<\/strong><\/p>\n Disable SELinux if you have not already.\u00a0 Guide here<\/a><\/p>\n Restart apache, and start mysql.\u00a0 If your on Ubuntu, the services are named apache2 and mysql<\/p>\n That should get it working, if not try a reboot.<\/p>\n Special notes<\/strong><\/p>\n The whole MySQL directory needs to be copied, there are innodb files that will keep MySQL from starting if they are not copied.<\/p>\n There is some good info here Had a LibreNMS instance crash, or the VM crashed, not bootable anymore.\u00a0 Was able to boot it up on a CentOS iso with rescue mode, which gave me access to the files.\u00a0 So the idea is to manually copy off … Continue reading \n
1. Installing New LibreNMS VM<\/h1>\n
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2. Gaining access to crashed VM<\/h1>\n
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\n<\/strong><\/p>\ntar czvf librenms_mysql.tgz \/var\/lib\/mysql<\/pre>\n
scp librenms_mysql.tgz user@new_LibreNMS_ip<\/pre>\n
systemctl stop mariadb\r\nrm -rf \/var\/lib\/mysql\/*\r\ntar xzvf librenms_mysql.tgz -C \/\r\nchown -R mysql:mysql \/var\/lib\/mysql<\/pre>\n
tar czvf librenms.tgz \/opt\/librenms<\/pre>\n
scp librenms.tgz user@new_LibreNMS_ip<\/pre>\n
rm -rf \/opt\/librenms\/*\r\ntar xzvf librenms.tgz -C \/\r\nchown -R librenms:librenms \/opt\/librenms<\/pre>\n
systemctl restart httpd\r\nsystemctl restart mariadb<\/pre>\n
\n https:\/\/stackoverflow.com\/questions\/1795176\/how-to-change-mysql-data-directory<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"