Field notes.
Page 9. Back to the latest note.
Explore the notes.
Different languages. A shared curiosity.
131 stories from the client collective
Local XDC development with xOne: impersonation, a loopback explorer and network workspaces
Three xOneRS dev tools from 2026-11-15: anvil_impersonateAccount on --dev, a loopback block explorer, and xone network up, status and down for local networks.
DNS peer discovery for XDC nodes: xOne's --discovery.dns and signed EIP-1459 trees
How xOneRS finds peers from a signed EIP-1459 DNS tree with --discovery.dns, what it checks before it dials, and why no XDC network has a tree to use yet.
XDC node hardware and disk requirements for xOne
XDC node hardware requirements for xOne: no CPU or RAM sizing is published. Read the enforced limits, disk watermarks, and the memory and disk use measured.
Health checks for an XDC node: /livez and /readyz in xOne for load balancers
How xOne's /livez and /readyz endpoints decide health, the five not-ready reasons, the configurable head-age limit, and their use behind a load balancer.
History retention in xOne: pruning bodies, receipts, logs and state, and backfill
The xOneRS --history flags: how long a node keeps bodies, receipts, logs, state and preimages, how to prune a stopped datadir, and backfill after snap sync.
Serving HTTP and WebSocket JSON-RPC on one port with xOne
How xOneRS serves HTTP and WebSocket RPC on one port: when it shares the listener, what stays separate per protocol, the TLS rule, and one admin_stopWS caveat.
Ten xOne Prometheus metrics to alert on for an XDC node
Ten Prometheus series the xOne node exports on XDC: name, type, meaning, one PromQL alert and the first check. It also says which series the node fills now.
What changed in xOne this week: a mid-week digest to 2026-11-15
The 507 pull requests the four xOne clients merged from 2026-11-13 to 2026-11-15, grouped by area: RPC, operations, CLI, sync, storage, execution and testing.
A permissioned XDC network with xOne: the node allowlist and the perm_ methods
How xOneRS restricts peers to an enode allowlist with --permissions.nodes, refuses everyone else, and changes the list at run time with perm_ RPC or SIGHUP.
How to monitor an XDC node with xOne: metrics, logs, ethstats
How to monitor an XDC node with xOne: log budgets, Prometheus metrics and health paths, the ethstats client, and the alert rules an operator should start with.
xOne ops toolbox: ten host tools for XDC node operators
The xOne ops toolbox in xOneRS: ten host tools for XDC nodes. Each entry says what the tool does, whether it changes anything, and gives one example command.
OpenTelemetry tracing for an XDC node: xOne's --tracing.otlp, and what it sends today
How to point xOneRS at an OTLP/HTTP collector with --tracing.otlp, how the bounded export queue works, and why the exporter has no xOne spans to send yet.