To upgrade syslog-ng Store Box (SSB)
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Navigate to Basic Settings > System > Upgrade.
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Click Choose File and select the *.iso file you want to upload.
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Click Upload. When the upload is finished, read the Upgrade notes popup window.
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Click . SSB will automatically upgrade and reboot the new version. Wait for the process to complete.
NOTE: In High Availability mode, you have to start the slave node through the IPMI interface. Failing to start the slave node results in a DEGRADED HA status.
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Navigate to Basic Settings > System > Version details and check the version numbers of SSB. In case you encounter problems, you can find common troubleshooting steps in Troubleshooting.