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Install FAQ#

1. How to resolve error: too many open files ?#

For Linux#

  • open file /etc/sysctl.conf, add follow config
fs.file-max = 500000
  • run command:
sysctl -p
  • open file /etc/security/limits.conf, add follow config
soft nofile 65535
  hard nofile 65535
  • open file /etc/systemd/user.conf, add follow config
DefaultLimitNOFILE=65535
  • open file /etc/systemd/system.conf, add follow config
DefaultLimitNOFILE=65535
  • reboot system, problem resolved
reboot

For MACOS#

  • if you are running under zsh, open file /etc/zshrc, add follow config
ulimit -n 20480
  • if you are running under bash, open file ~/.bash_profile, add follow config
ulimit -n 20480

For docker-compose#

  • if you started up exchaind with docker-compose, edit your compose.yml and add
    ulimits:
        nproc: 65535
        nofile:
            soft: 65535
            hard: 65535
  • restarting docker-compose to apply new setting
    docker-compose -f ${compose.yml} down
    docker-compose -f ${compose.yml} up -d

2. Configure trust-node and chain-id#

When using exchaincli to query block/tx or send tx, the following errors may occur:

$ exchaincli query block 6547302
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x4cecdea]

$ exchaincli tx send boos ex1fh9tpkqka29n0mj307cu5cvp5ts0p4dl3mkv7r 1okt -y --fees 0.002okt
ERROR: chain ID required but not specified

You should use the flag

$ exchaincli query block 6547302 --trust-node
$ exchaincli tx send boos ex1fh9tpkqka29n0mj307cu5cvp5ts0p4dl3mkv7r 1okt -y --fees 0.002okt --chain-id exchain-66

or local configuration

$ exchaincli config chain-id exchain-66
$ exchaincli config trust-node true

3. Make sure commitID is the latest version#

When you start your own node, to make sure that your commitID of exchaind is consistent with the official version, check it by:

$ exchaind version --long
# or
$ docker exec docker_container_name exchaind version --long

For example, the commitID of v0.16.8.3 is ee5068ccb54b464aeaff7eef69fb2e8611551fed.

name: exchain
server_name: exchaind
client_name: exchaincli
version: v1.6.5
commit: 4f496351ab3bdc4ce014706711f31589021dd0de
build_tags: netgo
go: go version go1.19.2 darwin/amd64