Prometheus之Dockerfile编写镜像构建容器启

　　从官方镜像启动：promprometheus
　　拉取镜像dockerpullpromprometheus
　　启动容器
　　方式1：dockerruntdp9090：9090nameprometheus1promprometheus
　　方式2：路径挂载dockerrunp9090：9090vpathtoprometheus。yml：etcprometheusprometheus。ymlpromprometheusdockerrunp9090：9090vpathtoconfig：etcprometheuspromprometheus官方Dockerfile分析
　　官方Dockerfile文件如下ARGARCHamd64ARGOSlinuxFROMquay。ioprometheusbusybox｛OS｝｛ARCH｝：latestLABELmaintainerThePrometheusAuthorsprometheusdevelopersgooglegroups。comARGARCHamd64ARGOSlinuxCOPY。build｛OS｝｛ARCH｝prometheusbinprometheusCOPY。build｛OS｝｛ARCH｝promtoolbinpromtoolCOPYdocumentationexamplesprometheus。ymletcprometheusprometheus。ymlCOPYconsolelibrariesusrshareprometheusconsolelibrariesCOPYconsolesusrshareprometheusconsolesCOPYLICENSELICENSECOPYNOTICENOTICECOPYnpmlicenses。tar。bz2npmlicenses。tar。bz2WORKDIRprometheusRUNlnsusrshareprometheusconsolelibrariesusrshareprometheusconsolesetcprometheuschownRnobody：nobodyetcprometheusprometheusUSERnobodyEXPOSE9090VOLUME〔prometheus〕ENTRYPOINT〔binprometheus〕CMD〔config。fileetcprometheusprometheus。yml，storage。tsdb。pathprometheus，web。console。librariesusrshareprometheusconsolelibraries，web。console。templatesusrshareprometheusconsoles〕
　　从官网Dockerfile文件可知：使用busybox作为基础镜像拷贝相关文件（prometheus、promtool、prometheus。yml等）到指定目录（bin、etc）指定工作目录prometheus容器内端口9090指定默认匿名卷为prometheus，Prometheus运行产生的数据将写到宿主机相关目录ENTRYPOINT容器启动入口点为binprometheusCMD指定容器启动参数为：config。fileetcprometheusprometheus。yml，storage。tsdb。pathprometheus，web。console。librariesusrshareprometheusconsolelibraries，web。console。templatesusrshareprometheusconsoles
　　容器内Prometheus启动命令为：binprometheusconfig。fileetcprometheusprometheus。ymlstorage。tsdb。pathprometheusweb。console。librariesusrshareprometheusconsolelibrariesweb。console。templatesusrshareprometheusconsoles
　　进入容器查看Prometheus的进程：〔rootdocker〕dockerexecitprometheus1shprometheusprometheuspsefgrepprometheu〔s〕1nobody0：53binprometheusconfig。fileetcprometheusprometheus。ymlstorage。tsdb。pathprometheusweb。console。librariesusrshareprometheusconsolelibrariesweb。console。templatesusrshareprometheusconsoles编写自己的Dockerfile
　　这里编写自己的Dockerfile进行构建，开启Prometheus进程的配置热加载和数据库管理功能。FROMamd64busybox：1。35LABELmaintainerThePrometheusAuthorswuenwuenARGARCHamd64ARGOSlinuxCOPYprometheus。｛OS｝｛ARCH｝prometheusprometheusbinCOPYprometheus。｛OS｝｛ARCH｝promtoolprometheusbinCOPYprometheus。｛OS｝｛ARCH｝prometheus。ymlprometheusetcprometheus。ymlCOPYprometheus。｛OS｝｛ARCH｝consolelibrariesprometheusconsolelibrariesCOPYprometheus。｛OS｝｛ARCH｝consolesprometheusconsolesCOPYprometheus。｛OS｝｛ARCH｝LICENSEprometheusLICENSECOPYprometheus。｛OS｝｛ARCH｝NOTICEprometheusNOTICEWORKDIRprometheusRUNlnsprometheusbinprometheusprometheusbinpromtoolbinchownRroot：rootprometheusUSERrootEXPOSE9090VOLUME〔prometheusdata，prometheusetc〕ENTRYPOINT〔binprometheus〕CMD〔config。fileprometheusetcprometheus。yml，storage。tsdb。pathprometheusdata，web。console。librariesprometheusconsolelibraries，web。console。templatesprometheusconsoles，web。enablelifecycle，web。enableadminapi〕
　　解读：使用amd64busybox：1。35作为基础镜像，将Prometheus的二进制文件放入bin目录，将配置文件统一放入etc目录；将配置文件目录和数据存储目录定义为匿名卷；启动方式中，新增两项配置，开启配置文件的热加载和数据库管理功能。
　　在同目录下添加一个。dockerignore文件，来屏蔽一些无关构建的文件：prometheus。linuxamd64。tar。gzetc构建镜像：
　　新建目录，将版本包和Dockerfile文件放入该目录mkdirrootprometheus；cdrootprometheuslsDockerfileprometheus2。33。1。linuxamd64。tar。gz
　　解压版本包，同时新建。dockerignore文件，在该文件下添加与构建无关的文件或目录（这表示构建时，不将这些文件复制到构建上下文环境中）tarzxfprometheus2。33。1。linuxamd64。tar。gzcat。dockerignoreprometheus。linuxamd64。tar。gz
　　执行构建命令dockerbuilddockerbuildtprometheus：v1。SendingbuildcontexttoDockerdaemon200。8MBStep118：FROMamd64busybox：1。3596b2896db672Step218：LABELmaintainerThePrometheusAuthorswuenwuenRunningin04e215d3c3e0Removingintermediatecontainer04e215d3c3e088050ed9e09dStep318：ARGARCHamd64Runningin5ce5d1b12e0fRemovingintermediatecontainer5ce5d1b12e0f370832a62c71Step418：ARGOSlinuxRunningind7ea847b2d90Removingintermediatecontainerd7ea847b2d90cf9781cb7722Step518：COPYprometheus。｛OS｝｛ARCH｝prometheusprometheusbin42b4b03f8332Step618：COPYprometheus。｛OS｝｛ARCH｝promtoolprometheusbin897066bd0ca3Step718：COPYprometheus。｛OS｝｛ARCH｝prometheus。ymlprometheusetcprometheus。ymlb141fa2c22a6Step818：COPYprometheus。｛OS｝｛ARCH｝consolelibrariesprometheusconsolelibraries228b62d5e860Step918：COPYprometheus。｛OS｝｛ARCH｝consolesprometheusconsoles5c9125f39322Step1018：COPYprometheus。｛OS｝｛ARCH｝LICENSEprometheusLICENSEc89f57bbceb6Step1118：COPYprometheus。｛OS｝｛ARCH｝NOTICEprometheusNOTICE7e459dfd86feStep1218：WORKDIRprometheusRunningin8f09cea3e03eRemovingintermediatecontainer8f09cea3e03eee1f386d159bStep1318：RUNlnsprometheusbinprometheusprometheusbinpromtoolbinchownRroot：rootprometheusRunningin093e9b6b8d14Removingintermediatecontainer093e9b6b8d14121df7a93221Step1418：USERrootRunninginb4ffed0d491aRemovingintermediatecontainerb4ffed0d491a75e2aada4653Step1518：EXPOSE9090Runninginb09e22947d56Removingintermediatecontainerb09e22947d56c700606bd44dStep1618：VOLUME〔prometheusdata，prometheusetc〕Runningine18dd4f3af2aRemovingintermediatecontainere18dd4f3af2a824d398febddStep1718：ENTRYPOINT〔binprometheus〕Runninginff8fb122f2fbRemovingintermediatecontainerff8fb122f2fb414d2523bb9bStep1818：CMD〔config。fileprometheusetcprometheus。yml，storage。tsdb。pathprometheusdata，web。console。librariesprometheusconsolelibraries，web。console。templatesprometheusconsoles，web。enablelifecycle，web。enableadminapi〕Runningin56a8542d31a9Removingintermediatecontainer56a8542d31a917f5fa014281Successfullybuilt17f5fa014281Successfullytaggedprometheus：v1
　　查看构建的镜像：dockerimagesREPOSITORYTAGIMAGEIDCREATEDSIZEprometheusv117f5fa0142816minutesago403MBamd64busybox1。3596b2896db6722weeksago1。24MBpromprometheuslatesta3d385fc29f92monthsago201MB可以看到自己构建的镜像比官方镜像大了一倍启动容器：
　　直接启动：dockerruntdprometheus：v1dockerruntdp9090：9090prometheus：v1
　　直接启动后，配置文件和数据存储目录将默认使用匿名挂载。
　　挂载路径使用dockerinspect命令查看
　　路径挂载（推荐）：
　　选择挂载出配置文件目录，数据存储目录使用默认的匿名挂载就行了。
　　由于路径挂载时，容器内挂载路径下的文件会被隐藏，同时Prometheus的启动又需要指定配置文件，所以启动容器前，需要提前将配置文件放在挂载点路径下，以避免容器启动后Prometheus进程无法启动，导致容器退出。
　　新建挂载点，并存放配置文件：treerootprometheusetcrootprometheusetcfirstrules。ymlprometheus。ymlstaticconfignodeexporter。yml
　　然后就可以使用构建的镜像来启动容器了，命令如下选择其中一个即可dockertdvrootprometheusetc：prometheusetcprometheus：v1dockerruntdp9090：9090nameprometheus1vrootprometheusetc：prometheusetcprometheus：v1dockerruntdp9090：9090nameprometheus1vrootprometheusetc：prometheusetcprometheus：v1
　　查看容器：dockerpsCONTAINERIDIMAGECOMMANDCREATEDSTATUSPORTSNAMESb2ebd62251acprometheus：v1binprometheuscAboutaminuteagoUpAboutaminute0。0。0。0：90909090tcp，：：：90909090tcpprometheus1dockerpsformattable｛｛。Image｝｝｛｛。ID｝｝｛｛。Ports｝｝｛｛。Status｝｝｛｛。Names｝｝IMAGECONTAINERIDPORTSSTATUSNAMESprometheus：v1b2ebd62251ac0。0。0。0：90909090tcp，：：：90909090tcpUp6minutesprometheus1
　　访问Prometheus的UI界面：http：192。168。175。130：9090
　　原文地址https：www。cnblogs。comMrRebootp15937802。html