func (dGroup DockerGroup) GenerateSystemdService() {
// [Unit]
// Description=Docker Application Container Engine
// Documentation=https://docs.docker.com
// After=network.target docker.socket
// Requires=docker.socket
// [Service]
// Type=notify
// ExecStart=/usr/bin/docker daemon -H fd://
// MountFlags=slave
// LimitNOFILE=1048576
// LimitNPROC=1048576
// LimitCORE=infinity
// [Install]
// WantedBy=multi-user.target
conf := c.NewConfiguration()
sectionUnit := conf.NewSection("Unit")
descr := fmt.Sprint("Docker Application Container Engine for Team no", dGroup.Number)
sectionUnit.Add("Description", descr)
after := fmt.Sprint("network.target ", dGroup.Name, ".socket")
sectionUnit.Add("After", after)
sectionService := conf.NewSection("Service")
sectionService.Add("Type", "notify")
execStart := fmt.Sprint("/usr/bin/docker daemon ", dGroup.Options)
// execStart := fmt.Sprint("/usr/bin/docker daemon -b docker", strconv.FormatInt(dGroup.Number, 10), " -g /var/lib/docker", " -G ", dGroup.Name, " --exec-root=/var/run/docker --pidfile=\"/var/run/", dGroup.Name, ".pid\" --bip 192.168.", dGroup.Number, ".1/24", " -H fd://")
sectionService.Add("ExecStart", execStart)
sectionService.Add("MountFlags", "slave")
sectionService.Add("LimitNOFILE", "1048576")
sectionService.Add("LimitNPROC", "1048576")
sectionService.Add("LimitCORE", "infinity")
sectionInstall := conf.NewSection("Install")
sectionInstall.Add("WantedBy", "multi-user.target")
fmt.Println(conf)
confPath := fmt.Sprint("/etc/systemd/system/", dGroup.Name, ".service")
err := c.Save(conf, confPath)
if err != nil {
log.Println(err)
}
}
func (dGroup DockerGroup) GenerateSystemdSocket() {
// [Unit]
// Description=Docker Socket for the API
// PartOf=docker.service
// [Socket]
// ListenStream=/var/run/docker.sock
// SocketMode=0660
// SocketUser=root
// SocketGroup=docker
// [Install]
// WantedBy=sockets.target
conf := c.NewConfiguration()
sectionUnit := conf.NewSection("Unit")
descr := fmt.Sprint("Docker Socket for the API for Team no", dGroup.Number)
sectionUnit.Add("Description", descr)
servicePath := fmt.Sprint(dGroup.Name, ".service")
sectionUnit.Add("PartOf", servicePath)
sectionSocket := conf.NewSection("Socket")
socketPath := fmt.Sprint("/var/run/", dGroup.Name, ".socket")
sectionSocket.Add("ListenStream", socketPath)
sectionSocket.Add("SocketMode", "0660")
sectionSocket.Add("SocketUser", "root")
sectionSocket.Add("SocketGroup", dGroup.Name)
sectionInstall := conf.NewSection("Install")
sectionInstall.Add("WantedBy", "socket.target")
fmt.Println(conf)
socketConfigPath := fmt.Sprint("/etc/systemd/system/", dGroup.Name, ".socket")
err := c.Save(conf, socketConfigPath)
if err != nil {
log.Println(err)
}
}
// Read and modify a configuration file
func Example() {
config, err := configparser.Read("/etc/config.ini")
if err != nil {
log.Fatal(err)
}
// Print the full configuration
fmt.Println(config)
// get a section
section, err := config.Section("MYSQLD DEFAULT")
if err != nil {
log.Fatal(err)
} else {
fmt.Printf("TotalSendBufferMemory=%s\n", section.ValueOf("TotalSendBufferMemory"))
// set new value
var oldValue = section.SetValueFor("TotalSendBufferMemory", "256M")
fmt.Printf("TotalSendBufferMemory=%s, old value=%s\n", section.ValueOf("TotalSendBufferMemory"), oldValue)
// delete option
oldValue = section.Delete("DefaultOperationRedoProblemAction")
fmt.Println("Deleted DefaultOperationRedoProblemAction: " + oldValue)
// add new options
section.Add("innodb_buffer_pool_size", "64G")
section.Add("innodb_buffer_pool_instances", "8")
}
// add a new section and options
section = config.NewSection("NDBD MGM")
section.Add("NodeId", "2")
section.Add("HostName", "10.10.10.10")
section.Add("PortNumber", "1186")
section.Add("ArbitrationRank", "1")
// find all sections ending with .webservers
sections, err := config.Find(".webservers$")
if err != nil {
log.Fatal(err)
}
for _, section := range sections {
fmt.Print(section)
}
// or
config.PrintSection("dc1.webservers")
sections, err = config.Delete("NDB_MGMD DEFAULT")
if err != nil {
log.Fatal(err)
}
// deleted sections
for _, section := range sections {
fmt.Print(section)
}
options := section.Options()
fmt.Println(options["HostName"])
// save the new config. the original will be renamed to /etc/config.ini.bak
err = configparser.Save(config, "/etc/config.ini")
if err != nil {
log.Fatal(err)
}
}