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TeamCity~通过构建步骤在服务器上启动Docker

teamcity docker powershell

1

Kira Resari · 技术社区 · 6 年前

我正在尝试创建TeamCity构建配置,以创建Docker映像。

我创建了下面的PowerShell脚本,它正是这样做的。该脚本甚至会等到Docker完全运行后才完成。

# This File checks if docker is running, and starts it if necessary, waiting until it has finished starting up before exiting

# ---------
# VARIABLES
# ---------

$TimeoutInterval = 10 #Timeout interval for checking whether docker has finished starting, in seconds
$DockerPath = "C:\Program Files\Docker\Docker\Docker for Windows.exe"


# ---------
# FUNCTIONS
# ---------

Function ProcessRunning([string] $ProcessName) {
    [bool] $Return = $False
    if ( Get-Process | Where-Object {$_.Name -like $ProcessName} ) {
        $Return = $True
    }
    Return $Return
}


# -------
# PROGRAM
# -------

# Enables Error  Action Preference to stop to enable try-catches
$ErrorActionPreference = 'Stop'

if(ProcessRunning("Docker for Windows")){
    echo "Docker is running"
    echo ""
    docker version
}else{
    echo "Docker is not running"
    echo ""
    echo "Starting Docker"
    echo ""
    Start-Process $DockerPath

    #Waits while Docker has not finished starting up
    $dockerStarting = $true
    while($dockerStarting){
        try{
            docker version
            $dockerStarting = $false
        }catch{
            echo ""
            echo "Docker is still starting up..."
            echo ""
            $dockerStarting = $true
            Wait-Event -Timeout $TimeoutInterval
        }
    }
    echo ""
    echo "Docker has finished starting up!"
    echo ""
}

此脚本在TeamCity服务器上本地执行时工作正常。但是,当我尝试将其作为构建步骤运行时,它似乎忽略了try-catch块,就像我在设置 $ErrorActionPreference = 'Stop'

docker version 命令失败,因为我打算用它来表示Docker尚未完全运行。但是,try-catch块在服务器上本地运行时无法捕获它。

Format stderr output as: 以及 Script execution mode: ,但结果保持不变:脚本抛出错误,并且TeamCity服务器上没有启动Docker。

现在,我的基本问题是:我所尝试的在技术上可能吗?因为我可以想象TeamCity采用了某种保护机制,防止在运行它的服务器上进行某些更改。再说一次,我过去曾成功地使用PowerShell脚本复制和删除服务器上的文件,所以老实说,在这一点上,我更困惑于为什么这似乎不起作用。

如果您对此有任何意见,我们将不胜感激。

1 回复 | 直到 6 年前

1

0

Kira Resari 6 年前

好的,所以我尝试了很多,最终找到了一个解决方案,允许我通过TeamCity构建步骤检查Docker是否正在运行,如果没有,则成功启动它。

1.)以提升的本地帐户运行TeamCity构建代理服务

SYSTEM 账户我使用以下方式将其切换到管理员帐户:

Services
â³TeamCity Build Agent
 â³Log On>Log on as
  â³âThis account: .\Administrator

2.)使用不依赖于try catch的“干净”skcript来查看Docker是否正在运行

我现在使用的最后一个PowerShell脚本非常有效,如下所示:

# This File checks if docker is running, and starts it if necessary, waiting until it has finished starting up before exiting

# ---------
# VARIABLES
# ---------

$TimeoutInterval = 10 #Timeout interval for checking whether docker has finished starting, in seconds
$DockerPath = "C:\Program Files\Docker\Docker\Docker for Windows.exe"


# ---------
# FUNCTIONS
# ---------

Function ProcessRunning([string] $ProcessName) {
    [bool] $Return = $False
    if ( Get-Process | Where-Object {$_.Name -like $ProcessName} ) {
        $Return = $True
    }
    Return $Return
}

# Determines if a Service exists with a name as defined in $ServiceName.
Function ServiceExists([string] $ServiceName) {
    [bool] $Return = $False
    if ( Get-Service "$ServiceName*" -Include $ServiceName ) {
        $Return = $True
    }
    Return $Return
}

# Determines if a Service with a name as defined in $ServiceName exists and is running
Function ServiceRunning([string] $ServiceName) {
    [bool] $Return = $False
    Write-Host "Checking if Service "$ServiceName" exists and is running"
    Write-Host ""
    if ( Get-Service "$ServiceName*" -Include $ServiceName ) {

        $arrService = Get-Service -Include $ServiceName

        if ( $arrService.Status -eq "Running" ) {
            Write-Host "Service "$ServiceName" exists, and is running!"
            Write-Host ""
            $Return = $True
        }else{
            Write-Host "Service "$ServiceName" exists, but is not running!"
            Write-Host ""
        }
    }else{
        Write-Host "Service "$ServiceName" does not exist!"
        Write-Host ""
    }
    Return $Return
}


# -------
# PROGRAM
# -------

if(ProcessRunning("Docker for Windows")){
    Write-Host "Docker is running"
    Write-Host ""
    docker version
}else{
    Write-Host "Docker is not running"
    Write-Host ""
    Write-Host "Starting Docker"
    Write-Host ""
    Start-Process $DockerPath

    #Waits while Docker has not finished starting up
    $dockerStarting = $true
    while($dockerStarting){
        if((ServiceRunning("com.docker.service")) -and (ServiceRunning("docker"))){
            Write-Host ""
            Write-Host "Docker has finished starting up!"
            Write-Host ""
            docker version
            $dockerStarting = $false
        }else{
            Write-Host ""
            Write-Host "Docker is still starting up..."
            Write-Host ""

            #Attempts to start the relevant services
            if(!(ServiceRunning("com.docker.service"))){
                if(ServiceExists("com.docker.service")){
                    Start-Service "com.docker.service"
                }
            }
            if(!(ServiceRunning("docker"))){
                if(ServiceExists("docker")){
                    Start-Service "docker"
                }
            }

            $dockerStarting = $true
            Wait-Event -Timeout $TimeoutInterval
        }
    }
}

我仍然不知道为什么try catch在TeamCity不起作用,所以如果有人知道答案,请发表评论。

无论如何,我希望这个解决方案对某些人有所帮助。