Running Kapacitor in an HA setup requires that you figure out a few things. Here are a few questions you should be asking yourself to get started.
1. Are you already using the relay? If so I would recommend disabling subscriptions and adding the Kapacitor hosts directly as backend to the relay. 2. Are you specifying the retention policy when you write data? If not then you will have to use subscriptions and not the relay since Kapacitor doesn't know the default retention policy for a given database. (This may change in the future). 3. What are you using Kapacitor for? Can that system handle duplicates? Meaning if you are using Kapacitor to trigger alerts can your alerting backend deduplicate multiple alerts from multiple Kapacitor hosts? This is probably the most important piece to figure out. If you can dedup then running two or more Kapacitor instances in active-active mode is best, either via subscriptions or the relay. Most common alerting system can dedup alerts. If you can't dedup then you will have to run two or more Kapacitor instances in active-passive mode, meaning only one instance is receiving data at a time. If the active one fails a passive is promoted to active. You will have to implement the load balancer and promotions pieces yourself in this case. 4. You will need a way to keep the Kapacitor instances in sync as far as their tasks are concerned. The Kapacitor hosts will not know about each other and so you will need to either put a proxy in front the the API and duplicate requests to each Kapacitor instance or otherwise figure out how to keep them in sync. On Wednesday, October 26, 2016 at 5:35:36 AM UTC-6, pelle...@gmail.com wrote: > > Hello, > > Currently I am experimenting with different HA setups for InfluxDB. > I want to use Kapacaitor to generate alerts. I was wondering, what is the > best setup for Kapacitor in a HA setup? > > Do I install multiple Kapacitor instances on all my InfluxDB databases? > > I also have a another question. > > What is the recommended amount of InfluxDB Databases in a Open Source HA > solution? I was thinking about 2-3 databases. > > I hope someone can help me. > > Kind regards > > -- Remember to include the version number! --- You received this message because you are subscribed to the Google Groups "InfluxData" group. To unsubscribe from this group and stop receiving emails from it, send an email to influxdb+unsubscr...@googlegroups.com. To post to this group, send email to influxdb@googlegroups.com. Visit this group at https://groups.google.com/group/influxdb. To view this discussion on the web visit https://groups.google.com/d/msgid/influxdb/e50b4b3a-9b4c-49bb-8c17-57d7213bafb1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
