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class="docMainContainer_2iGs"><div class="container padding-vert--lg docItemWrapper_1bxp"><div class="row"><div class="col docItemCol_U38p"><div class="docItemContainer_a7m4"><article><header><h1 class="docTitle_Oumm">Test and Troubleshooting</h1></header><div class="markdown"><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="test-with-a-tensorflow-job"></a>Test with a tensorflow job<a class="hash-link" href="#test-with-a-tensorflow-job" title="Direct link to heading">#</a></h2><p>Distributed-shell + GPU + cgroup</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-bash codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">..</span><span class="token plain">. </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> job run </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --env </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">DOCKER_JAVA_HOME</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">/opt/java </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --env </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">DOCKER_HADOOP_HDFS_HOME</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">/hadoop-current --name distributed-tf-gpu </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --env </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_NETWORK</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">calico-network </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --worker_docker_image tf-1.13.1-gpu:0.0.1 </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --ps_docker_image tf-1.13.1-cpu:0.0.1 </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --input_path hdfs://</span><span class="token variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token plain">/tmp/cifar-10-data </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --checkpoint_path hdfs://</span><span class="token variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token plain">/user/hadoop/tf-distributed-checkpoint </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --num_ps </span><span class="token number" style="color:rgb(247, 140, 108)">0</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --ps_resources </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">memory</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">4G,vcores</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token number" style="color:rgb(247, 140, 108)">2</span><span class="token plain">,gpu</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token number" style="color:rgb(247, 140, 108)">0</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --ps_launch_cmd </span><span class="token string" style="color:rgb(195, 232, 141)">"python /test/cifar10_estimator/cifar10_main.py --data-dir=hdfs://</span><span class="token string variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token string" style="color:rgb(195, 232, 141)">/tmp/cifar-10-data --job-dir=hdfs://</span><span class="token string variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token string" style="color:rgb(195, 232, 141)">/tmp/cifar-10-jobdir --num-gpus=0"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --worker_resources </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">memory</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">4G,vcores</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token number" style="color:rgb(247, 140, 108)">2</span><span class="token plain">,gpu</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"> --verbose </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --num_workers </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> --worker_launch_cmd </span><span class="token string" style="color:rgb(195, 232, 141)">"python /test/cifar10_estimator/cifar10_main.py --data-dir=hdfs://</span><span class="token string variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token string" style="color:rgb(195, 232, 141)">/tmp/cifar-10-data --job-dir=hdfs://</span><span class="token string variable" style="color:rgb(191, 199, 213)">${dfs_name_service}</span><span class="token string" style="color:rgb(195, 232, 141)">/tmp/cifar-10-jobdir --train-steps=500 --eval-batch-size=16 --train-batch-size=16 --sync --num-gpus=1"</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issues"></a>Issues:<a class="hash-link" href="#issues" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issue-1-fail-to-start-nodemanager-after-system-reboot"></a>Issue 1: Fail to start nodemanager after system reboot<a class="hash-link" href="#issue-1-fail-to-start-nodemanager-after-system-reboot" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">2018-09-20 18:54:39,785 ERROR org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor: Failed to bootstrap configured resource subsystems!</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.ResourceHandlerException: Unexpected: Cannot create yarn cgroup Subsystem:cpu Mount points:/proc/mounts User:yarn Path:/sys/fs/cgroup/cpu,cpuacct/hadoop-yarn</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandlerImpl.initializePreMountedCGroupController(CGroupsHandlerImpl.java:425)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandlerImpl.initializeCGroupController(CGroupsHandlerImpl.java:377)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsCpuResourceHandlerImpl.bootstrap(CGroupsCpuResourceHandlerImpl.java:98)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsCpuResourceHandlerImpl.bootstrap(CGroupsCpuResourceHandlerImpl.java:87)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.ResourceHandlerChain.bootstrap(ResourceHandlerChain.java:58)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor.init(LinuxContainerExecutor.java:320)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:389)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:929)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:997)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">2018-09-20 18:54:39,789 INFO org.apache.hadoop.service.AbstractService: Service NodeManager failed in state INITED</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Solution: Grant user yarn the access to <code>/sys/fs/cgroup/cpu,cpuacct</code>, which is the subfolder of cgroup mount destination.</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">chown :yarn -R /sys/fs/cgroup/cpu,cpuacct</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">chmod g+rwx -R /sys/fs/cgroup/cpu,cpuacct</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>If GPUs are used，the access to cgroup devices folder is neede as well</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">chown :yarn -R /sys/fs/cgroup/devices</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">chmod g+rwx -R /sys/fs/cgroup/devices</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issue-2-container-executor-permission-denied"></a>Issue 2: container-executor permission denied<a class="hash-link" href="#issue-2-container-executor-permission-denied" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">2018-09-21 09:36:26,102 WARN org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor: IOException executing command:</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">java.io.IOException: Cannot run program "/etc/yarn/sbin/Linux-amd64-64/container-executor": error=13, Permission denied</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.util.Shell.runCommand(Shell.java:938)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.util.Shell.run(Shell.java:901)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:1213)</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Solution: The permission of <code>/etc/yarn/sbin/Linux-amd64-64/container-executor</code> should be 6050</p><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issue-3：how-to-get-docker-service-log"></a>Issue 3：How to get docker service log<a class="hash-link" href="#issue-3：how-to-get-docker-service-log" title="Direct link to heading">#</a></h3><p>Solution: we can get docker log with the following command</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-undefined codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">journalctl -u docker</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issue-4：docker-cant-remove-containers-with-errors-like-device-or-resource-busy"></a>Issue 4：docker can't remove containers with errors like <code>device or resource busy</code><a class="hash-link" href="#issue-4：docker-cant-remove-containers-with-errors-like-device-or-resource-busy" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-bash codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">$ docker </span><span class="token function" style="color:rgb(130, 170, 255)">rm</span><span class="token plain"> 0bfafa146431</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">Error response from daemon: Unable to remove filesystem </span><span class="token keyword" style="font-style:italic">for</span><span class="token plain"> 0bfafa146431771f6024dcb9775ef47f170edb2f1852f71916ba44209ca6120a: remove /app/docker/containers/0bfafa146431771f6024dcb9775ef47f170edb2f152f71916ba44209ca6120a/shm: device or resource busy</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Solution: to find which process leads to a <code>device or resource busy</code>, we can add a shell script, named <code>find-busy-mnt.sh</code></p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-bash codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token shebang important">#!/usr/bin/env bash</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># A simple script to get information about mount points and pids and their</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># mount namespaces.</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">if</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain"> </span><span class="token variable" style="color:rgb(191, 199, 213)">$#</span><span class="token plain"> -ne </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token keyword" style="font-style:italic">then</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">echo</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"Usage: </span><span class="token string variable" style="color:rgb(191, 199, 213)">$0</span><span class="token string" style="color:rgb(195, 232, 141)"> <devicemapper-device-id>"</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">exit</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">fi</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">ID</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">$1</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">MOUNTS</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token variable function" style="color:rgb(130, 170, 255)">find</span><span class="token variable" style="color:rgb(191, 199, 213)"> /proc/*/mounts </span><span class="token variable operator" style="color:rgb(137, 221, 255)">|</span><span class="token variable" style="color:rgb(191, 199, 213)"> </span><span class="token variable function" style="color:rgb(130, 170, 255)">xargs</span><span class="token variable" style="color:rgb(191, 199, 213)"> </span><span class="token variable function" style="color:rgb(130, 170, 255)">grep</span><span class="token variable" style="color:rgb(191, 199, 213)"> $ID </span><span class="token variable operator file-descriptor important" style="color:rgb(137, 221, 255)">2</span><span class="token variable operator" style="color:rgb(137, 221, 255)">></span><span class="token variable" style="color:rgb(191, 199, 213)">/dev/null</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain"> -z </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$MOUNTS</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">&&</span><span class="token plain"> </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">echo</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"No pids found"</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">&&</span><span class="token plain"> </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">exit</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">0</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"> |
| </span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">printf</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"PID</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string" style="color:rgb(195, 232, 141)">NAME</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string" style="color:rgb(195, 232, 141)">MNTNS</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">echo</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$MOUNTS</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">|</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">while</span><span class="token plain"> </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">read</span><span class="token plain"> LINE</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">do</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">PID</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token variable builtin class-name" style="color:rgb(255, 203, 107)">echo</span><span class="token variable" style="color:rgb(191, 199, 213)"> $LINE </span><span class="token variable operator" style="color:rgb(137, 221, 255)">|</span><span class="token variable" style="color:rgb(191, 199, 213)"> </span><span class="token variable function" style="color:rgb(130, 170, 255)">cut</span><span class="token variable" style="color:rgb(191, 199, 213)"> -d </span><span class="token variable string" style="color:rgb(195, 232, 141)">":"</span><span class="token variable" style="color:rgb(191, 199, 213)"> -f1 </span><span class="token variable operator" style="color:rgb(137, 221, 255)">|</span><span class="token variable" style="color:rgb(191, 199, 213)"> </span><span class="token variable function" style="color:rgb(130, 170, 255)">cut</span><span class="token variable" style="color:rgb(191, 199, 213)"> -d </span><span class="token variable string" style="color:rgb(195, 232, 141)">"/"</span><span class="token variable" style="color:rgb(191, 199, 213)"> -f3</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Ignore self and thread-self</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">if</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$PID</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">==</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"self"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">||</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$PID</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">==</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"thread-self"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">then</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">continue</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">fi</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">NAME</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token variable function" style="color:rgb(130, 170, 255)">ps</span><span class="token variable" style="color:rgb(191, 199, 213)"> -q $PID -o </span><span class="token variable assign-left variable" style="color:rgb(191, 199, 213)">comm</span><span class="token variable operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">MNTNS</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token variable" style="color:rgb(191, 199, 213)">readlink /proc/$PID/ns/mnt</span><span class="token variable" style="color:rgb(191, 199, 213)">`</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">printf</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"%s</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string" style="color:rgb(195, 232, 141)">%s</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string entity" style="color:rgb(195, 232, 141)">\t</span><span class="token string" style="color:rgb(195, 232, 141)">%s</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$PID</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$NAME</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token string variable" style="color:rgb(191, 199, 213)">$MNTNS</span><span class="token string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">done</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><p>Kill the process by pid, which is found by the script</p><div class="mdxCodeBlock_1zKU"><div class="codeBlockContent_actS"><div tabindex="0" class="prism-code language-bash codeBlock_tuNs thin-scrollbar"><div class="codeBlockLines_3uvA" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">$ </span><span class="token function" style="color:rgb(130, 170, 255)">chmod</span><span class="token plain"> +x find-busy-mnt.sh</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">./find-busy-mnt.sh 0bfafa146431771f6024dcb9775ef47f170edb2f152f71916ba44209ca6120a</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># PID NAME MNTNS</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># 5007 ntpd mnt:[4026533598]</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">$ </span><span class="token function" style="color:rgb(130, 170, 255)">kill</span><span class="token plain"> -9 </span><span class="token number" style="color:rgb(247, 140, 108)">5007</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2GIj">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_prK2" id="issue-5：yarn-failed-to-start-containers"></a>Issue 5：Yarn failed to start containers<a class="hash-link" href="#issue-5：yarn-failed-to-start-containers" title="Direct link to heading">#</a></h3><p>if the number of GPUs required by applications is larger than the number of GPUs in the cluster, there would be some containers can't be created.</p></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/apache/submarine/edit/master/website/docs/adminDocs/yarn/TestAndTroubleshooting.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2LL7"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page navigation"><div class="pagination-nav__item"></div><div class="pagination-nav__item pagination-nav__item--next"></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_2xL- thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#test-with-a-tensorflow-job" class="table-of-contents__link">Test with a tensorflow job</a></li><li><a href="#issues" class="table-of-contents__link">Issues:</a><ul><li><a href="#issue-1-fail-to-start-nodemanager-after-system-reboot" class="table-of-contents__link">Issue 1: Fail to start nodemanager after system reboot</a></li><li><a href="#issue-2-container-executor-permission-denied" class="table-of-contents__link">Issue 2: container-executor permission denied</a></li><li><a href="#issue-3：how-to-get-docker-service-log" class="table-of-contents__link">Issue 3：How to get docker service log</a></li><li><a href="#issue-4：docker-cant-remove-containers-with-errors-like-device-or-resource-busy" class="table-of-contents__link">Issue 4：docker can't remove containers with errors like <code>device or resource busy</code></a></li><li><a href="#issue-5：yarn-failed-to-start-containers" class="table-of-contents__link">Issue 5：Yarn failed to start containers</a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row 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