SLA Checks

The members agree to the following SLA.

The SLA Monitor will test for these conditions periodically. Failure to meet the SLA would result in loss of 'points', which could affect the member payments and/or membership.

Membership SLA

DOT & KSM Bond

• each member is required to bond 5000 DOT & KSM

Technical SLA

For each service, the following technical checks should be performed

Boot node

• test connection via peer.dial (+ make rpc call over P2P?)
• security checks - same as RPC node

RPC node

availability

• target: 99.9% uptime
• "ping" for network sockets (equivalents of: 30333, 9900, 9933, 9944)
• syncing? is the node up-to-date?

performance

• target <100 ms
• RPC connection, query
• #peers (api.rpc.sytem.health)

{
  "peers": 16
  "isSyncing": false
  "shouldHavePeers": true
}

reliability

• software version - get from telemetry
• (get this from the latest release from paritytech/polkadot)

get_latest_release() {
  curl --silent "https://api.github.com/repos/paritytech/polkadot/releases/latest" | # Get latest release from GitHub api
    grep '"tag_name":' |                                            # Get tag line
    sed -E 's/.*"([^"]+)".*/\1/'                                    # Pluck JSON value
}
# returns
v0.9.37

const version = await api.call.core.version()
console.log('version', version.toHuman())

# returns
version {
  specName: 'westend',
  implName: 'parity-westend',
  authoringVersion: '2',
  specVersion: '9,370',
  implVersion: '0',
  apis: [
    [ '0xdf6acb689907609b', '4' ],
    [ '0x37e397fc7c91f5e4', '1' ],
    [ '0x40fe3ad401f8959a', '6' ],
...
[ '0x17a6bc0d0062aeb3', '1' ]
  ],
  transactionVersion: '18',
  stateVersion: '0'
}

security

• --rpc-methods="safe"

  const methods = await api.rpc.rpc.methods()
  console.log('methods', methods.toHuman())
  // list of exposed methods: includes system_peers !!
  // THIS SHOULD FAIL
  const peers = await api.rpc.system.peers()
  console.log('peers', peers.toHuman())

other

• ssl certificate expired?