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+# Zabbix Upgrade V5 to V6 (Debian 10, PostgreSQL, TimescaleDB)
+
+## Upgrade TimescaleDB
+
+### Install new timescaledb version
+
+apt install timescaledb-2-2.6.0-postgresql-12
+
+### Connect to Postgresql
+
+sudo -u postgres psql -X
+
+### Switch to database zabbix
+
+\c zabbix
+
+### Update the postgresql extension
+
+ALTER EXTENSION timescaledb UPDATE;
+
+### Verify that the new timescaledb version is used
+
+\dx timescaledb
+
+## Upgrade PostgreSQL to 14
+
+### Install Postgresql 14 
+
+apt install postgresql-14
+
+### Install Timescaledb
+
+apt install timescaledb-2-2.6.0-postgresql-14
+
+### Stop all postgresql clusters
+
+service postgresql@12-main stop
+service postgresql@14-main stop
+
+### Drop the new postgresql cluster
+
+pg_dropcluster 14 main
+
+### Run pg_upgradecluster to upgrade the cluster to v14
+
+pg_upgradecluster -v 14 --method=upgrade --link 12 main
+
+### Make sure the new cluster ist listening on port 5432 
+
+netstat -tapen | grep LISTEN
+
+### Drop the old postgresql cluster
+
+pg_dropcluster 12 main
+
+### Verify they timescaledb version on the zabbix db
+
+sudo -u postgres psql
+\c zabbix
+\dx
+
+## Upgrade Zabbix from 5.4.x to 6.0 (Steps for Debian 10)
+
+### Remove the old repository list
+
+rm -Rf /etc/apt/sources.list.d/zabbix.list
+
+### Install the new repository list
+
+wget https://repo.zabbix.com/zabbix/6.0/debian/pool/main/z/zabbix-release/zabbix-release_6.0-1+debian10_all.deb
+
+dpkg -i zabbix-release_6.0-1+debian10_all.deb
+
+### Update the repositroy cache
+
+apt clean
+apt update
+
+### Verify that zabbix will be upgraded to v6
+
+apt list --upgradeable
+
+### Install all upgrades
+
+apt ugprade
+
+### Start zabbix Server
+
+service zabbix-server start
+
+### Check the log file for errors
+
+vim /var/log/zabbix/zabbix_server.log
+
+### Verify the web interface is up and running
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