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Merge pull request #147 from hqhq/hq_update_readme

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Update README
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Michael Crosby 2016-03-22 10:38:43 -07:00
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109
README.md
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@ -86,25 +86,20 @@ USAGE:
containerd [global options] command [command options] [arguments...]
VERSION:
0.0.4
AUTHOR(S):
@crosbymichael <crosbymichael@gmail.com>
0.1.0 commit: 54c213e8a719d734001beb2cb8f130c84cc3bd20
COMMANDS:
help, h Shows a list of commands or help for one command
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--id "deathstar" unique containerd id to identify the instance
--debug enable debug output in the logs
--state-dir "/run/containerd" runtime state directory
-c, --concurrency "10" set the concurrency level for tasks
--metrics-interval "1m0s" interval for flushing metrics to the store
--listen, -l "/run/containerd/containerd.sock" Address on which GRPC API will listen
--oom-notify enable oom notifications for containers
--graphite-address Address of graphite server
--help, -h show help
--version, -v print the version
--debug enable debug output in the logs
--state-dir "/run/containerd" runtime state directory
--metrics-interval "5m0s" interval for flushing metrics to the store
--listen, -l "/run/containerd/containerd.sock" Address on which GRPC API will listen
--runtime, -r "runc" name of the OCI compliant runtime to use when executing containers
--graphite-address Address of graphite server
--help, -h show help
--version, -v print the version
```
# Roadmap
@ -127,37 +122,58 @@ There is a default cli named `ctr` based on the GRPC api.
This cli will allow you to create and manage containers run with containerd.
```
$ ctr -h
NAME:
ctr - High performance container daemon controller
ctr - High performance container daemon cli
USAGE:
ctr [global options] command [command options] [arguments...]
VERSION:
0.0.4
AUTHOR(S):
@crosbymichael <crosbymichael@gmail.com>
0.1.0 commit: 54c213e8a719d734001beb2cb8f130c84cc3bd20
COMMANDS:
checkpoints list all checkpoints
containers interact with running containers
events receive events from the containerd daemon
help, h Shows a list of commands or help for one command
events receive events from the containerd daemon
state get a raw dump of the containerd state
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--debug enable debug output in the logs
--debug enable debug output in the logs
--address "/run/containerd/containerd.sock" address of GRPC API
--help, -h show help
--version, -v print the version
--help, -h show help
--version, -v print the version
```
### Starting a container
```
$ ctr containers start -h
NAME:
ctr containers start - start a container
USAGE:
ctr containers start [command options] [arguments...]
OPTIONS:
--checkpoint, -c checkpoint to start the container from
--attach, -a connect to the stdio of the container
--label, -l [--label option --label option] set labels for the container
```
```bash
$ sudo ctr containers start redis /containers/redis
```
Note: `/containers/redis` is the path of bundle you have to prepare before
running a contianer, see [bundle](docs/bundle.md) to get more information.
### Listing containers
```bash
$ sudo ctr containers
ID PATH STATUS PID1
ID PATH STATUS PROCESSES
1 /containers/redis running 14063
19 /containers/redis running 14100
14 /containers/redis running 14117
@ -180,38 +196,18 @@ ID PATH STATUS PID1
0 /containers/redis running 14006
```
### Starting a container
```
$ ctr containers start -h
NAME:
start - start a container
USAGE:
command start [command options] [arguments...]
OPTIONS:
--checkpoint, -c checkpoint to start the container from
--attach, -a connect to the stdio of the container
```
```bash
$ sudo ctr containers start redis /containers/redis
```
### Kill a container's process
```
$ ctr containers kill -h
NAME:
kill - send a signal to a container or its processes
ctr containers kill - send a signal to a container or its processes
USAGE:
command kill [command options] [arguments...]
ctr containers kill [command options] [arguments...]
OPTIONS:
--pid, -p "0" pid of the process to signal within the container
--pid, -p "init" pid of the process to signal within the container
--signal, -s "15" signal to send to the container
```
@ -220,20 +216,20 @@ OPTIONS:
```
$ ctr containers exec -h
NAME:
exec - exec another process in an existing container
ctr containers exec - exec another process in an existing container
USAGE:
command exec [command options] [arguments...]
ctr containers exec [command options] [arguments...]
OPTIONS:
--id container id to add the process to
--pid process id for the new process
--attach, -a connect to the stdio of the container
--cwd current working directory for the process
--tty, -t create a terminal for the process
--env, -e [--env option --env option] environment variables for the process
--uid, -u "0" user id of the user for the process
--gid, -g "0" group id of the user for the process
```
### Stats for a container
@ -241,10 +237,10 @@ OPTIONS:
```
$ ctr containers stats -h
NAME:
stats - get stats for running container
ctr containers stats - get stats for running container
USAGE:
command stats [arguments...]
ctr containers stats [arguments...]
```
### List checkpoints
@ -261,17 +257,16 @@ test2 false false false
```
$ ctr checkpoints create -h
NAME:
create - create a new checkpoint for the container
ctr checkpoints create - create a new checkpoint for the container
USAGE:
command create [command options] [arguments...]
ctr checkpoints create [command options] [arguments...]
OPTIONS:
--tcp persist open tcp connections
--unix-sockets perist unix sockets
--exit exit the container after the checkpoint completes successfully
--shell checkpoint shell jobs
```
### Get events

6
docs/attach.md
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@ -18,15 +18,15 @@ message CreateContainerRequest {
string stdin = 3; // path to the file where stdin will be read (optional)
string stdout = 4; // path to file where stdout will be written (optional)
string stderr = 5; // path to file where stderr will be written (optional)
string console = 6; // path to the console for a container (optional)
string console = 6; // path to the console for a container (optional)
string checkpoint = 7; // checkpoint name if you want to create immediate checkpoint (optional)
}
```
## Attach
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.
The default CLI for containerd does this if you specify the `--attach` flag on `create`.
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.
The default CLI for containerd does this if you specify the `--attach` flag on `create` or `start`.
It will create fifos for each of the containers stdio which the CLI can read and write to.
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.

367
docs/bundle.md
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@ -49,242 +49,159 @@ cli tool from the [runc](https://github.com/opencontainers/runc) repository.
You need to `cd` into the `redis` directory and run the `runc spec` command. After doing this you
should have two files created, `configs.json` and `runtime.json`. The directory structure should
look like this:
should have a file `config.json` created. The directory structure should look like this:
```
/containers/redis
├── config.json
├── rootfs/
└── runtime.json
└── rootfs/
```
## Edits
We need to edit the config to add `redis-server` as the application to launch inside the container along with
a few other settings. The resulting `config.json` should look like this:
We need to edit the config to add `redis-server` as the application to launch inside the container,
and remove the network namespace so that you can connect to the redis server on your system.
The resulting `config.json` should look like this:
```json
{
"version": "0.2.0",
"platform": {
"os": "linux",
"arch": "amd64"
},
"process": {
"terminal": false,
"user": {
"uid": 1000,
"gid": 1000
},
"args": [
"redis-server", "--bind", "0.0.0.0"
],
"env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"TERM=xterm"
],
"cwd": ""
},
"root": {
"path": "rootfs",
"readonly": false
},
"hostname": "shell",
"mounts": [
{"name": "proc", "path": "/proc"},
{"name": "dev", "path": "/dev"},
{"name": "devpts", "path": "/dev/pts"},
{"name": "shm", "path": "/dev/shm"},
{"name": "mqueue", "path": "/dev/mqueue"},
{"name": "sysfs", "path": "/sys"}
],
"linux": {
"capabilities": [
"CAP_AUDIT_WRITE",
"CAP_KILL",
"CAP_NET_BIND_SERVICE"
]
}
}
```
You will also want to edit the `runtime.json` file to remove the network namespace so that
you can connect to the redis server on your system. The final result for the `runtime.json`
file should look like this:
```json
{
"mounts": {
"dev": {
"type": "tmpfs",
"source": "tmpfs",
"options": [
"nosuid",
"strictatime",
"mode=755",
"size=65536k"
]
},
"devpts": {
"type": "devpts",
"source": "devpts",
"options": [
"nosuid",
"noexec",
"newinstance",
"ptmxmode=0666",
"mode=0620",
"gid=5"
]
},
"mqueue": {
"type": "mqueue",
"source": "mqueue",
"options": [
"nosuid",
"noexec",
"nodev"
]
},
"proc": {
"type": "proc",
"source": "proc",
"options": null
},
"shm": {
"type": "tmpfs",
"source": "shm",
"options": [
"nosuid",
"noexec",
"nodev",
"mode=1777",
"size=65536k"
]
},
"sysfs": {
"type": "sysfs",
"source": "sysfs",
"options": [
"nosuid",
"noexec",
"nodev"
]
}
},
"linux": {
"rlimits": [
{
"type": "RLIMIT_NOFILE",
"hard": 1024,
"soft": 1024
}
],
"resources": {
"disableOOMKiller": false,
"memory": {
"limit": 0,
"reservation": 0,
"swap": 0,
"kernel": 0
},
"cpu": {
"shares": 0,
"quota": 0,
"period": 0,
"realtimeRuntime": 0,
"realtimePeriod": 0,
"cpus": "",
"mems": ""
},
"pids": {
"limit": 0
},
"blockIO": {
"blkioWeight": 0,
"blkioLeafWeight": 0,
"blkioWeightDevice": null,
"blkioThrottleReadBpsDevice": null,
"blkioThrottleWriteBpsDevice": null,
"blkioThrottleReadIOPSDevice": null,
"blkioThrottleWriteIOPSDevice": null
},
"hugepageLimits": null,
"network": {
"classId": "",
"priorities": null
}
},
"namespaces": [
{"type": "pid", "path": ""},
{"type": "ipc", "path": ""},
{"type": "uts", "path": ""},
{"type": "mount", "path": ""}
],
"devices": [
{
"path": "/dev/null",
"type": 99,
"major": 1,
"minor": 3,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
},
{
"path": "/dev/random",
"type": 99,
"major": 1,
"minor": 8,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
},
{
"path": "/dev/full",
"type": 99,
"major": 1,
"minor": 7,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
},
{
"path": "/dev/tty",
"type": 99,
"major": 5,
"minor": 0,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
},
{
"path": "/dev/zero",
"type": 99,
"major": 1,
"minor": 5,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
},
{
"path": "/dev/urandom",
"type": 99,
"major": 1,
"minor": 9,
"permissions": "rwm",
"fileMode": 438,
"uid": 0,
"gid": 0
}
]
}
"ociVersion": "0.4.0",
"platform": {
"os": "linux",
"arch": "amd64"
},
"process": {
"terminal": true,
"user": {},
"args": [
"redis-server", "--bind", "0.0.0.0"
],
"env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"TERM=xterm"
],
"cwd": "/",
"capabilities": [
"CAP_AUDIT_WRITE",
"CAP_KILL",
"CAP_NET_BIND_SERVICE"
],
"rlimits": [
{
"type": "RLIMIT_NOFILE",
"hard": 1024,
"soft": 1024
}
],
"noNewPrivileges": true
},
"root": {
"path": "rootfs",
"readonly": true
},
"hostname": "runc",
"mounts": [
{
"destination": "/proc",
"type": "proc",
"source": "proc"
},
{
"destination": "/dev",
"type": "tmpfs",
"source": "tmpfs",
"options": [
"nosuid",
"strictatime",
"mode=755",
"size=65536k"
]
},
{
"destination": "/dev/pts",
"type": "devpts",
"source": "devpts",
"options": [
"nosuid",
"noexec",
"newinstance",
"ptmxmode=0666",
"mode=0620",
"gid=5"
]
},
{
"destination": "/dev/shm",
"type": "tmpfs",
"source": "shm",
"options": [
"nosuid",
"noexec",
"nodev",
"mode=1777",
"size=65536k"
]
},
{
"destination": "/dev/mqueue",
"type": "mqueue",
"source": "mqueue",
"options": [
"nosuid",
"noexec",
"nodev"
]
},
{
"destination": "/sys",
"type": "sysfs",
"source": "sysfs",
"options": [
"nosuid",
"noexec",
"nodev",
"ro"
]
},
{
"destination": "/sys/fs/cgroup",
"type": "cgroup",
"source": "cgroup",
"options": [
"nosuid",
"noexec",
"nodev",
"relatime",
"ro"
]
}
],
"hooks": {},
"linux": {
"resources": {
"devices": [
{
"allow": false,
"access": "rwm"
}
]
},
"namespaces": [
{
"type": "pid"
},
{
"type": "ipc"
},
{
"type": "uts"
},
{
"type": "mount"
}
],
"devices": null
}
}
```