Long shot question on localhost

Issues & Assistance
1

MacOS I run ngrok tunnels to my Rails web app with Puma Dev and it all works. Basically the tunnel hits 127.0.0.1:3206 or my port and all is well.

On my new Garuda Machine here, I have now spent 10 hours trying to mimic this, without success. The only thing now stopping me seems to be something with localhost! When a service tries to connect the tunnel, for some reason, address 127.0.0.1 is already taekn and I cannot figure out why.

 /home/dlazar/.rbenv/versions/3
.2.2/lib/ruby/gems/3.2.0/gems/puma-6.3.0/lib/puma/binder.rb:334:in `initialize':
Address already in use - bind(2) for "127.0.0.1" port 3206 (Errno::EADDRINUSE)

So it seems something gloms onto this address and nothing else can work with it. Is there a trick with Arch to allow my localhost to be used by more than one caller?

System:
  Kernel: 6.6.10-zen1-1-zen arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc available: acpi_pm
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen
    root=UUID=3ca8b255-f29c-4744-8324-8ca995444357 rw rootflags=subvol=@
    quiet resume=UUID=88aa211a-5bdb-49f3-a5f5-d8ac5cf926a3 loglevel=3
    mem_sleep_default=s2idle ibt=off
  Desktop: KDE Plasma v: 5.27.10 tk: Qt v: 5.15.12 wm: kwin_wayland vt: 1
    dm: SDDM Distro: Garuda Linux base: Arch Linux
Machine:
  Type: Laptop System: Apple product: MacBookPro12,1 v: 1.0
    serial: <superuser required> Chassis: type: 9 v: Mac-E43C1C25D4880AD6
    serial: <superuser required>
  Mobo: Apple model: Mac-E43C1C25D4880AD6 v: MacBookPro12,1
    serial: <superuser required> UEFI: Apple v: 486.0.0.0.0 date: 08/03/2023
Battery:
  ID-1: BAT0 charge: 38.4 Wh (62.1%) condition: 61.8/74.8 Wh (82.6%)
    volts: 11.4 min: 11.4 model: DP bq20z451 type: Li-ion serial: N/A
    status: discharging cycles: 212
CPU:
  Info: model: Intel Core i5-5287U bits: 64 type: MT MCP arch: Broadwell
    gen: core 5 level: v3 note: check built: 2015-18 process: Intel 14nm
    family: 6 model-id: 0x3D (61) stepping: 4 microcode: 0x2F
  Topology: cpus: 1x cores: 2 tpc: 2 threads: 4 smt: enabled cache:
    L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB desc: 2x256 KiB
    L3: 3 MiB desc: 1x3 MiB
  Speed (MHz): avg: 2481 high: 2901 min/max: 500/3300 scaling:
    driver: intel_cpufreq governor: schedutil cores: 1: 2617 2: 2901 3: 2276
    4: 2131 bogomips: 23198
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities: <filter>
Graphics:
  Device-1: Intel Iris Graphics 6100 vendor: Apple driver: i915 v: kernel
    arch: Gen-8 process: Intel 14nm built: 2014-15 ports: active: eDP-1
    empty: DP-1, DP-2, HDMI-A-1, HDMI-A-2 bus-ID: 00:02.0 chip-ID: 8086:162b
    class-ID: 0300
  Display: wayland server: X.org v: 1.21.1.10 with: Xwayland v: 23.2.3
    compositor: kwin_wayland driver: X: loaded: modesetting
    alternate: fbdev,intel,vesa dri: iris gpu: i915 display-ID: 0
  Monitor-1: eDP-1 res: 1463x914 size: N/A modes: N/A
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast surfaceless: drv: iris wayland: drv: iris x11:
    drv: iris inactive: gbm
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 23.3.2-arch1.2
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel Iris Graphics 6100 (BDW
    GT3) device-ID: 8086:162b memory: 15.16 GiB unified: yes display-ID: :1.0
  API: Vulkan v: 1.3.274 layers: 9 device: 0 type: integrated-gpu name: Intel
    Iris Graphics 6100 (BDW GT3) driver: mesa intel v: 23.3.2-arch1.2
    device-ID: 8086:162b surfaces: xcb,xlib,wayland device: 1 type: cpu
    name: llvmpipe (LLVM 16.0.6 256 bits) driver: mesa llvmpipe
    v: 23.3.2-arch1.2 (LLVM 16.0.6) device-ID: 10005:0000
    surfaces: xcb,xlib,wayland
Audio:
  Device-1: Intel Broadwell-U Audio vendor: Apple driver: snd_hda_intel
    v: kernel bus-ID: 00:03.0 chip-ID: 8086:160c class-ID: 0403
  Device-2: Intel Wildcat Point-LP High Definition Audio
    driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 chip-ID: 8086:9ca0
    class-ID: 0403
  Device-3: Broadcom 720p FaceTime HD Camera driver: N/A pcie: gen: 2
    speed: 5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 14e4:1570 class-ID: 0480
  API: ALSA v: k6.6.10-zen1-1-zen status: kernel-api with: aoss
    type: oss-emulator tools: N/A
  Server-1: PipeWire v: 1.0.0 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Broadcom BCM43602 802.11ac Wireless LAN SoC vendor: Apple
    driver: brcmfmac v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
    bus-ID: 03:00.0 chip-ID: 14e4:43ba class-ID: 0280
  IF: wlp3s0 state: up mac: <filter>
Bluetooth:
  Device-1: Apple Bluetooth Host Controller driver: btusb,hid-generic,usbhid
    type: USB rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-3:2
    chip-ID: 05ac:8290 class-ID: fe01
  Report: hciconfig ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 4.2
    lmp-v: 8 sub-v: 21a9 hci-v: 8 rev: 12d9 class-ID: 7c010c
  Info: acl-mtu: 1021:8 sco-mtu: 64:1 link-policy: rswitch sniff
    link-mode: peripheral accept service-classes: rendering, capturing, object
    transfer, audio, telephony
Drives:
  Local Storage: total: 465.92 GiB used: 23.24 GiB (5.0%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Apple model: SSD SM0512G
    size: 465.92 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: JA0Q scheme: GPT
Partition:
  ID-1: / raw-size: 448.54 GiB size: 448.54 GiB (100.00%)
    used: 23.24 GiB (5.2%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 584 KiB (0.2%) fs: vfat dev: /dev/sda1 maj-min: 8:1
  ID-3: /home raw-size: 448.54 GiB size: 448.54 GiB (100.00%)
    used: 23.24 GiB (5.2%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
  ID-4: /var/log raw-size: 448.54 GiB size: 448.54 GiB (100.00%)
    used: 23.24 GiB (5.2%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
  ID-5: /var/tmp raw-size: 448.54 GiB size: 448.54 GiB (100.00%)
    used: 23.24 GiB (5.2%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
Swap:
  Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default) zswap: no
  ID-1: swap-1 type: zram size: 15.52 GiB used: 0 KiB (0.0%) priority: 100
    comp: zstd avail: lzo,lzo-rle,lz4,lz4hc,842 max-streams: 4 dev: /dev/zram0
  ID-2: swap-2 type: partition size: 17.08 GiB used: 0 KiB (0.0%)
    priority: -2 dev: /dev/sda3 maj-min: 8:3
Sensors:
  System Temperatures: cpu: 55.0 C pch: 52.5 C mobo: N/A
  Fan Speeds (rpm): N/A
Info:
  Processes: 265 Uptime: 4h 33m wakeups: 6 Memory: total: 16 GiB
  available: 15.52 GiB used: 6.89 GiB (44.4%) Init: systemd v: 255
  default: graphical tool: systemctl Compilers: gcc: 13.2.1 clang: 16.0.6
  Packages: pm: pacman pkgs: 1967 libs: 565 tools: octopi,paru Shell: Zsh
  v: 5.9 running-in: alacritty inxi: 3.3.31
Garuda (2.6.22-1):
  System install date:     2023-12-24
  Last full system update: 2024-01-10
  Is partially upgraded:   No
  Relevant software:       snapper NetworkManager dracut
  Windows dual boot:       No/Undetected
  Failed units:
2

You can check what process is on that port with lsof. You may need to install it first.

sudo pacman -S lsof

Run it against that port like this:

lsof -i :3206

The output should give you a PID if you want to kill the process so your other thing can run.

kill -9 [whatever the PID is]
4 Likes
3

I am not very knowledgeable on networking but could this be a simple firewall issue? Have you setup any firewalls? Check if you have blocked the ports on that.

1 Like
4

No idea if relevant, the error message brought me here:
Address already in use error when attempting to bind to local SSL cert for 3.12.1 · Issue #1785 · puma/puma · GitHub (old, and closed, maybe some useful hint there)

On a side note, ss is the new netstat.

5

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