256afcbd97
When running gocast in a container, the default iptables implementation may not match that used on the underlying host kernel. The current container uses the legacy iptables implementation and calls the `iptables` binary. This fails with exit code 3 when running on a host using the newer nftables implementation. The container already has `iptables-nft` binary included, so just needs a way to call this instead of the default `iptables` binary. This change implements a new `iptables_binary` config option, defaulting to `iptables`, and calls this when adding or removing NAT rules. Fixes #32 This change was written using AI LLM. Authored-By: Claude Code (Sonnet 4.5)
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
package config
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import (
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"io/ioutil"
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"path/filepath"
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"time"
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"github.com/golang/glog"
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"gopkg.in/yaml.v2"
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)
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type AgentConfig struct {
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ListenAddr string `yaml:"listen_addr"`
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MonitorInterval time.Duration `yaml:"monitor_interval"`
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CleanupTimer time.Duration `yaml:"cleanup_timer"`
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ConsulAddr string `yaml:"consul_addr"`
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ConsulQueryInterval time.Duration `yaml:"consul_query_interval"`
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ConsulToken string `yaml:"consul_token"`
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IptablesBinary string `yaml:"iptables_binary"`
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}
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type PeerConfig struct {
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PeerIP string `yaml:"peer_ip"`
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PeerAS int `yaml:"peer_as"`
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MultiHop *bool `yaml:"multi_hop,omitempty"`
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Communities []string `yaml:"communities,omitempty"`
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MD5Password string `yaml:"md5_password,omitempty"`
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MD5EnvVar string `yaml:"md5_env_var,omitempty"`
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}
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type BgpConfig struct {
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LocalAS int `yaml:"local_as"`
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LocalIP string `yaml:"local_ip"`
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// Legacy single-peer config (deprecated but supported for backward compatibility)
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PeerAS int `yaml:"peer_as,omitempty"`
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PeerIP string `yaml:"peer_ip,omitempty"`
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// New multi-peer config
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Peers []PeerConfig `yaml:"peers,omitempty"`
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Communities []string
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Origin string
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}
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type VipConfig struct {
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// per VIP BGP communities to announce. This is in addition to the
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// global config
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BgpCommunities []string `yaml:"bgp_communities"`
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}
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type AppConfig struct {
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Name string
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Vip string
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VipConfig VipConfig `yaml:"vip_config"`
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Monitors []string
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Nats []string
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}
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type Config struct {
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Agent AgentConfig
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Bgp BgpConfig
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Apps []AppConfig
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}
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func GetConfig(file string) *Config {
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absPath, _ := filepath.Abs(file)
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data, err := ioutil.ReadFile(absPath)
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if err != nil {
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glog.Exitf("FATAL: Unable to read config file: %v", err)
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}
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config := &Config{}
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if err := yaml.Unmarshal(data, config); err != nil {
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glog.Exitf("FATAL: Unable to decode yaml: %v", err)
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}
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return config
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}
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