The "Titan" upgrade guide (v1.0.* to v1.1.0)
The Cronos v1.1.0 - "Titan" upgrade is proposed to be scheduled at the block height of 13,184,000. Referencing estimated time can be found at https://explorer.cronos.org/block/countdown/13184000
DO NOT UPGRADE to the binary v1.1.0 before that suggested upgrade schedule.
You might check the current block height by the Cronos Explorer
Step 0 - Don't panic
At the point of the proposed upgrade, user will see the error message on the cronosd
similar to the below:
ERR UPGRADE "v1.1.0" NEEDED at height: 13184000: {\"binaries\":{...."}}
Don't panic - The Chain will be paused to allow the majority of validators to upgrade. Validators and full node hosts will have to upgrade your Cronos nodes to the latest release binary.
Backups
Before the upgrade, node hosts are encouraged to take a complete data backup. backup depends heavily on infrastructure, but generally, we can do this by backing up the .cronos
directory.
It is critically important for validator operators to back-up the .cronos/data/priv_validator_state.json
file after stopping the cronosd
process. This file is updated every block as your validator participates in consensus rounds. It is a critical file needed to prevent double-signing if the upgrade fails and the previous chain needs to be restarted.
Step 1 - Get the v1.1.0
binary
v1.1.0
binaryTo simplify the following step, we will be using Linux-x86 for illustration. Binary for Mac Windows with different DB and architecture are also available here.
Terminate the
cronosd
; afterwards, download the1.1.0
released binaries from github:$ curl -LOJ https://github.com/crypto-org-chain/cronos/releases/download/v1.1.0/cronos_1.1.0_Linux_x86_64.tar.gz $ tar -zxvf cronos_1.1.0_Linux_x86_64.tar.gz
Step 1.1 - Verify the version
You can verify the installation by checking the version of cronosd
, the latest version is 1.1.0
.
# check the version of cronosd
$ ./cronosd version
1.1.0
Step 2. - Run everything
We are ready to start the node join the network again with the new binary:
Start
cronosd
, e.g.:
$ ./cronosd start
Afterwards, sit back and wait for the syncing process. You can query the node syncing status by
$ ./cronosd status 2>&1 | jq '.SyncInfo.catching_up'
If the above command returns false
, it means that your node is synced; otherwise, it returns true
and implies your node is still catching up.
At this step, you've successfully performed the Titan upgrade!
Last updated
Was this helpful?