Update bundle.md
As we only have config.json in specs now. Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
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Qiang Huang
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@ -18,15 +18,15 @@ message CreateContainerRequest {
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string stdin = 3; // path to the file where stdin will be read (optional)
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string stdout = 4; // path to file where stdout will be written (optional)
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string stderr = 5; // path to file where stderr will be written (optional)
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string console = 6; // path to the console for a container (optional)
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string console = 6; // path to the console for a container (optional)
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string checkpoint = 7; // checkpoint name if you want to create immediate checkpoint (optional)
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}
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```
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## Attach
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In order to have attach like functionality for your containers you use the same API request but named pipes or `fifo`s can be be used to achieve this type of functionality.
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The default CLI for containerd does this if you specify the `--attach` flag on `create`.
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In order to have attach like functionality for your containers you use the same API request but named pipes or `fifo`s can be used to achieve this type of functionality.
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The default CLI for containerd does this if you specify the `--attach` flag on `create` or `start`.
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It will create fifos for each of the containers stdio which the CLI can read and write to.
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This can be used to create an interactive session with the container, `bash` for example, or to have a blocking way to collect the container's STDIO and forward it to your logging facilities.
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367
docs/bundle.md
367
docs/bundle.md
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@ -49,242 +49,159 @@ cli tool from the [runc](https://github.com/opencontainers/runc) repository.
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You need to `cd` into the `redis` directory and run the `runc spec` command. After doing this you
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should have two files created, `configs.json` and `runtime.json`. The directory structure should
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look like this:
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should have a file `config.json` created. The directory structure should look like this:
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```
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/containers/redis
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├── config.json
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├── rootfs/
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└── runtime.json
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└── rootfs/
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```
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## Edits
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We need to edit the config to add `redis-server` as the application to launch inside the container along with
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a few other settings. The resulting `config.json` should look like this:
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We need to edit the config to add `redis-server` as the application to launch inside the container,
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and remove the network namespace so that you can connect to the redis server on your system.
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The resulting `config.json` should look like this:
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```json
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{
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"version": "0.2.0",
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"platform": {
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"os": "linux",
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"arch": "amd64"
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},
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"process": {
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"terminal": false,
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"user": {
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"uid": 1000,
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"gid": 1000
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},
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"args": [
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"redis-server", "--bind", "0.0.0.0"
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],
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"env": [
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"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
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"TERM=xterm"
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],
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"cwd": ""
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},
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"root": {
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"path": "rootfs",
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"readonly": false
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},
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"hostname": "shell",
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"mounts": [
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{"name": "proc", "path": "/proc"},
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{"name": "dev", "path": "/dev"},
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{"name": "devpts", "path": "/dev/pts"},
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{"name": "shm", "path": "/dev/shm"},
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{"name": "mqueue", "path": "/dev/mqueue"},
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{"name": "sysfs", "path": "/sys"}
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],
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"linux": {
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"capabilities": [
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"CAP_AUDIT_WRITE",
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"CAP_KILL",
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"CAP_NET_BIND_SERVICE"
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]
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}
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}
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```
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You will also want to edit the `runtime.json` file to remove the network namespace so that
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you can connect to the redis server on your system. The final result for the `runtime.json`
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file should look like this:
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```json
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{
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"mounts": {
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"dev": {
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"type": "tmpfs",
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"source": "tmpfs",
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"options": [
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"nosuid",
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"strictatime",
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"mode=755",
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"size=65536k"
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]
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},
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"devpts": {
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"type": "devpts",
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"source": "devpts",
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"options": [
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"nosuid",
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"noexec",
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"newinstance",
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"ptmxmode=0666",
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"mode=0620",
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"gid=5"
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]
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},
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"mqueue": {
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"type": "mqueue",
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"source": "mqueue",
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"options": [
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"nosuid",
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"noexec",
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"nodev"
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]
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},
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"proc": {
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"type": "proc",
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"source": "proc",
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"options": null
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},
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"shm": {
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"type": "tmpfs",
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"source": "shm",
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"options": [
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"nosuid",
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"noexec",
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"nodev",
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"mode=1777",
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"size=65536k"
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]
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},
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"sysfs": {
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"type": "sysfs",
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"source": "sysfs",
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"options": [
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"nosuid",
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"noexec",
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"nodev"
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]
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}
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},
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"linux": {
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"rlimits": [
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{
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"type": "RLIMIT_NOFILE",
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"hard": 1024,
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"soft": 1024
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}
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],
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"resources": {
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"disableOOMKiller": false,
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"memory": {
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"limit": 0,
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"reservation": 0,
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"swap": 0,
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"kernel": 0
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},
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"cpu": {
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"shares": 0,
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"quota": 0,
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"period": 0,
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"realtimeRuntime": 0,
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"realtimePeriod": 0,
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"cpus": "",
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"mems": ""
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},
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"pids": {
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"limit": 0
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},
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"blockIO": {
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"blkioWeight": 0,
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"blkioLeafWeight": 0,
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"blkioWeightDevice": null,
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"blkioThrottleReadBpsDevice": null,
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"blkioThrottleWriteBpsDevice": null,
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"blkioThrottleReadIOPSDevice": null,
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"blkioThrottleWriteIOPSDevice": null
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},
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"hugepageLimits": null,
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"network": {
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"classId": "",
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"priorities": null
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}
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},
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"namespaces": [
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{"type": "pid", "path": ""},
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{"type": "ipc", "path": ""},
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{"type": "uts", "path": ""},
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{"type": "mount", "path": ""}
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],
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"devices": [
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{
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"path": "/dev/null",
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"type": 99,
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"major": 1,
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"minor": 3,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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},
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{
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"path": "/dev/random",
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"type": 99,
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"major": 1,
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"minor": 8,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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},
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{
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"path": "/dev/full",
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"type": 99,
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"major": 1,
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"minor": 7,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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},
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{
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"path": "/dev/tty",
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"type": 99,
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"major": 5,
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"minor": 0,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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},
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{
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"path": "/dev/zero",
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"type": 99,
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"major": 1,
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"minor": 5,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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},
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{
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"path": "/dev/urandom",
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"type": 99,
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"major": 1,
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"minor": 9,
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"permissions": "rwm",
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"fileMode": 438,
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"uid": 0,
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"gid": 0
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}
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]
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}
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"ociVersion": "0.4.0",
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"platform": {
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"os": "linux",
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"arch": "amd64"
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},
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"process": {
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"terminal": true,
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"user": {},
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"args": [
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"redis-server", "--bind", "0.0.0.0"
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],
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"env": [
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"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
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"TERM=xterm"
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],
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"cwd": "/",
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"capabilities": [
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"CAP_AUDIT_WRITE",
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"CAP_KILL",
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"CAP_NET_BIND_SERVICE"
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],
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"rlimits": [
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{
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"type": "RLIMIT_NOFILE",
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"hard": 1024,
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"soft": 1024
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}
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],
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"noNewPrivileges": true
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},
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"root": {
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"path": "rootfs",
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"readonly": true
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},
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"hostname": "runc",
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"mounts": [
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{
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"destination": "/proc",
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"type": "proc",
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"source": "proc"
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},
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{
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"destination": "/dev",
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"type": "tmpfs",
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"source": "tmpfs",
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"options": [
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"nosuid",
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"strictatime",
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"mode=755",
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"size=65536k"
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]
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},
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{
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"destination": "/dev/pts",
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"type": "devpts",
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"source": "devpts",
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"options": [
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"nosuid",
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"noexec",
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"newinstance",
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"ptmxmode=0666",
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"mode=0620",
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"gid=5"
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]
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},
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{
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"destination": "/dev/shm",
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"type": "tmpfs",
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"source": "shm",
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"options": [
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"nosuid",
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"noexec",
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"nodev",
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"mode=1777",
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"size=65536k"
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]
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},
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{
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"destination": "/dev/mqueue",
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"type": "mqueue",
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"source": "mqueue",
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"options": [
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"nosuid",
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"noexec",
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"nodev"
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]
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},
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{
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"destination": "/sys",
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"type": "sysfs",
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"source": "sysfs",
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"options": [
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"nosuid",
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"noexec",
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"nodev",
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"ro"
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]
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},
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{
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"destination": "/sys/fs/cgroup",
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"type": "cgroup",
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"source": "cgroup",
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"options": [
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"nosuid",
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"noexec",
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"nodev",
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"relatime",
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"ro"
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]
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}
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],
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"hooks": {},
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"linux": {
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"resources": {
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"devices": [
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{
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"allow": false,
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"access": "rwm"
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}
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]
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},
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"namespaces": [
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{
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"type": "pid"
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},
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{
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"type": "ipc"
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},
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{
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"type": "uts"
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},
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{
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"type": "mount"
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}
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],
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"devices": null
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}
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}
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```
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