Number of simultaneously running parachains with one relaychain

[f33r0]

Hello, I have encountered a problem that I can't launch more than two parachains registered in one chainspec. In the registration field, you can see all three, but in fact, only two work, the last third one cannot correctly import block 1 and endlessly reports its import.

Question: are there any parameters in the chainspec that limit the number of parachains per relaychain?

relaychain chainspec: rococo-local parachains: karura-local, polkadot-local, asset-hub-rococo-local

[eskimor]

How many validators does your relay chain have? Also some log output might be helpful. Can you share the polkadot js chain state output for paraScheduler -> claimQueue please?

[f33r0]

How many validators does your relay chain have? Also some log output might be helpful. Can you share the polkadot js chain state output for paraScheduler -> claimQueue please?

1. A have two validators
2. Logs are not contains something interesting

3. 
   [
   {
   core: 0
   paraId: 1,000
   kind: Parachain
   groupIdx: 0
   }
   {
   core: 1
   paraId: 2,000
   kind: Parachain
   groupIdx: 1
   }
   {
   core: 2
   paraId: 2,011
   kind: Parachain
   groupIdx: 2
   }
   ]

[eskimor]

With two validators you can not have more than 2 cores/parachains at the same time. Simply spawning at least one more validator should resolve your issue.

[f33r0]

With two validators you can not have more than 2 cores/parachains at the same time. Simply spawning at least one more validator should resolve your issue.

Can you tell me please, how to add validators? If I already use Alice, Bob? Just add Charlie?

I meant, without modify the chainspec

[eskimor]

The easiest way to run test networks is Zombienet.

[pepoviola]

Hi @f33r0, ping me if you need help with the zombienet setup. Running this network should be straight forward. Thx!

[f33r0]

sorry, I have to using standard deploy without "launchers" like a zombienet. This is not the correct approach

[f33r0]

is there any table that shows the compatibility of polkadot-parachain and polkadot versions (as relaychain)?

[eskimor]

Vastly backwards compatible. Most of the time you just want to upgrade to get bug fixes/support for features like asynchronous backing.

[f33r0]

So, relaychain validator number 3 was helped. One more question: aura key - sr25519 right?

[sandreim]

Yes!

[f33r0]

Thank you a lot!