<div dir="ltr">Hi Everyone,<div><br></div><div><div style="font-size:14px">The latest release of cr-combined said that it supports network. Then I do some experiments. I use</div><div style="font-size:14px">1. docker run -d -v demo:/data --name=redis redis:latest</div><div style="font-size:14px">2. docker run -d -e USE_REDIS_HOST=redis --link redis:redis -p 80:80 --name=app binocarlos/moby-counter:latest</div><div style="font-size:14px">which is a demo of simple website and redis is its storage. I first run them on host A</div><div style="font-size:14px"><br></div><div style="font-size:14px">I try to checkpoint them and copy to another host(host B). I create two containers with same configuration of them and applied the change of file system to the new created container. Then I tried to restore them, which sometimes came out a wrong result.</div><div style="font-size:14px">I notice that when redis and app have same ip address on host A and B, then the restore will success. But, when they have different IP on two hosts, the restore progress will certainly broken.</div><div style="font-size:14px"><br></div><div style="font-size:14px">The reason I guess is that the state of tcp connection in checkpoint image didn't match the new environment in host B. For example, redis in host A is 17.172.20.1 and app in host A is 17.172.20.2, then for app there is a connection whose remote host is 17.172.20.1. Then come to host B, if redis in host B is 17.172.20.3 and when I try to restore app, criu will confuse where is 17.172.20.1(redis)?</div><div style="font-size:14px"><br></div><div style="font-size:14px">Generally, is there always a problem to checkpoint and restore a container, who has a link with other containers, on the another host?</div><div style="font-size:14px"><br></div><div style="font-size:14px">And who knows that how to use a specific IP address while start a new container? For the latest release of cr-combined doesn't support docker run --ip. Even --ip is supported, it requires a user defined network, default network is not supported. </div><div style="font-size:14px"><br></div><div style="font-size:14px">Hopes for your kindly response & wish all of you a great day!</div></div><div><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div dir="ltr"><div><span style="font-family:Calibri;color:rgb(31,73,125);font-size:medium">Regards,</span><br></div><div><p style="margin:0cm 0cm 0pt"><font size="3"><span lang="EN-US" style="color:rgb(31,73,125)"><font face="Calibri">David Sun</font></span></font><br></p></div></div></div></div></div>
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