Add server process management with named instances#15
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Introduce `chv server` command group for managing multiple named ClickHouse server instances, replacing the old `chv run server`. Key changes: - New `src/server.rs` module for process tracking, port management, and server lifecycle (start/stop/list/remove) - Each server gets its own data directory at `.clickhouse/servers/<name>/data/` - Servers default to background mode with `--foreground` (`-F`/`--fg`) flag - Auto-assigns free ports when defaults (8123/9000) are in use; explicit `--http-port` and `--tcp-port` flags for manual control - Named servers: "default" for first, random adjective-noun for subsequent, or explicit `--name` for stable identity - PID tracking with health checks, SIGTERM→SIGKILL shutdown sequence - `chv server list` shows both running and stopped servers - `chv server stop-all` for bulk shutdown - `chv server remove` to delete stopped server data - `chv run` simplified to only handle client, local, and --sql - New error variants: ServerNotRunning, ServerNotFound, ServerAlreadyRunning Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Document the new `chv server` command group including start, list, stop, stop-all, and remove subcommands. Cover server naming, auto port assignment, foreground mode, and per-server data directories. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
chv servercommand group replacingchv run server, with subcommands:start,list,stop,stop-all,remove.clickhouse/servers/<name>/data/, enabling multiple isolated servers running simultaneously--namefor stable identities--http-portand--tcp-portflags for manual control--foreground(-F/--fg) to run in foregroundchv server listshows both running and stopped servers by scanning data directorieschv runsimplified — now only handlesclient,local, and--sqlNew commands
chv server startchv server start --name devchv server start --http-port 8124chv server start --foregroundchv server listchv server stop <name>chv server stop-allchv server remove <name>Breaking changes
chv run serveris removed — usechv server startinstead.clickhouse/{version}/to.clickhouse/servers/<name>/data/Test plan
chv server start— starts "default" server in background, prints PID and portschv server startagain — auto-generates random name, auto-assigns free portschv server start --name test— starts named serverchv server list— shows running and stopped servers with statuschv server stop default— stops the default serverchv server list— default now shows as [stopped]chv server start --name default— restarts the stopped serverchv server stop-all— stops all running serverschv server remove test— deletes stopped server datachv server start --foreground— runs in foreground, Ctrl-C exits cleanlychv server start --http-port 9123 --tcp-port 9100— uses explicit portschv run --sql "SELECT 1"— still workschv run client/chv run local— still works🤖 Generated with Claude Code